/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 04:33:18,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 04:33:18,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 04:33:19,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-15 04:33:19,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-15 04:33:19,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-15 04:33:19,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-15 04:33:19,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-15 04:33:19,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-15 04:33:19,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-15 04:33:19,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-15 04:33:19,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-15 04:33:19,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-15 04:33:19,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-15 04:33:19,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-15 04:33:19,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-15 04:33:19,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-15 04:33:19,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-15 04:33:19,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-15 04:33:19,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-15 04:33:19,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-15 04:33:19,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-15 04:33:19,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-15 04:33:19,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-15 04:33:19,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-15 04:33:19,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 04:33:19,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 04:33:19,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 04:33:19,070 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-15 04:33:19,081 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 04:33:19,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 04:33:19,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 04:33:19,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 04:33:19,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 04:33:19,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 04:33:19,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 04:33:19,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 04:33:19,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 04:33:19,083 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 04:33:19,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 04:33:19,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 04:33:19,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 04:33:19,084 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 04:33:19,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 04:33:19,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 04:33:19,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 04:33:19,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 04:33:19,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 04:33:19,084 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-15 04:33:19,084 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 04:33:19,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 04:33:19,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 04:33:19,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 04:33:19,298 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 04:33:19,301 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 04:33:19,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c [2022-02-15 04:33:19,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6772f166/854b341d31f54d9a87b559cedae846fe/FLAG2064d3b30 [2022-02-15 04:33:19,964 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 04:33:19,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c [2022-02-15 04:33:20,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6772f166/854b341d31f54d9a87b559cedae846fe/FLAG2064d3b30 [2022-02-15 04:33:20,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6772f166/854b341d31f54d9a87b559cedae846fe [2022-02-15 04:33:20,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 04:33:20,380 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 04:33:20,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 04:33:20,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 04:33:20,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 04:33:20,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 04:33:20" (1/1) ... [2022-02-15 04:33:20,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10cefb27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:33:20, skipping insertion in model container [2022-02-15 04:33:20,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 04:33:20" (1/1) ... [2022-02-15 04:33:20,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 04:33:20,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 04:33:20,879 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c[77246,77259] [2022-02-15 04:33:21,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 04:33:21,273 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 04:33:21,311 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c[77246,77259] [2022-02-15 04:33:21,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 04:33:21,516 INFO L208 MainTranslator]: Completed translation [2022-02-15 04:33:21,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:33:21 WrapperNode [2022-02-15 04:33:21,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 04:33:21,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 04:33:21,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 04:33:21,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 04:33:21,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:33:21" (1/1) ... [2022-02-15 04:33:21,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:33:21" (1/1) ... [2022-02-15 04:33:21,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:33:21" (1/1) ... [2022-02-15 04:33:21,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:33:21" (1/1) ... [2022-02-15 04:33:21,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:33:21" (1/1) ... [2022-02-15 04:33:21,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:33:21" (1/1) ... [2022-02-15 04:33:21,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:33:21" (1/1) ... [2022-02-15 04:33:21,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 04:33:21,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 04:33:21,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 04:33:21,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 04:33:21,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:33:21" (1/1) ... [2022-02-15 04:33:21,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 04:33:21,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 04:33:21,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-15 04:33:21,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-15 04:33:21,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 04:33:21,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 04:33:21,849 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 04:33:21,849 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-02-15 04:33:21,849 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-02-15 04:33:21,849 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-02-15 04:33:21,849 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-02-15 04:33:21,849 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-02-15 04:33:21,849 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyUnload [2022-02-15 04:33:21,850 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyAddDevice [2022-02-15 04:33:21,850 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConfigCallBack [2022-02-15 04:33:21,850 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-02-15 04:33:21,850 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-02-15 04:33:21,850 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-02-15 04:33:21,850 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-02-15 04:33:21,850 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-02-15 04:33:21,851 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-02-15 04:33:21,851 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-02-15 04:33:21,851 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPower [2022-02-15 04:33:21,852 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyReadWrite [2022-02-15 04:33:21,852 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInterpretError [2022-02-15 04:33:21,852 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFinishOperation [2022-02-15 04:33:21,852 INFO L138 BoogieDeclarations]: Found implementation of procedure FlStartDrive [2022-02-15 04:33:21,852 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDatarateSpecifyConfigure [2022-02-15 04:33:21,852 INFO L138 BoogieDeclarations]: Found implementation of procedure FlRecalibrateDrive [2022-02-15 04:33:21,852 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDetermineMediaType [2022-02-15 04:33:21,852 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAllocateIoBuffer [2022-02-15 04:33:21,852 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFreeIoBuffer [2022-02-15 04:33:21,852 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyThread [2022-02-15 04:33:21,852 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConsolidateMediaTypeWithBootSector [2022-02-15 04:33:21,852 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckBootSector [2022-02-15 04:33:21,852 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWriteTrack [2022-02-15 04:33:21,852 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWrite [2022-02-15 04:33:21,852 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFormat [2022-02-15 04:33:21,852 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2022-02-15 04:33:21,852 INFO L138 BoogieDeclarations]: Found implementation of procedure FlIssueCommand [2022-02-15 04:33:21,853 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInitializeControllerHardware [2022-02-15 04:33:21,853 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-02-15 04:33:21,853 INFO L138 BoogieDeclarations]: Found implementation of procedure FlHdbit [2022-02-15 04:33:21,853 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-02-15 04:33:21,853 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCancelQueuedRequest [2022-02-15 04:33:21,853 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-02-15 04:33:21,853 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-02-15 04:33:21,853 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 04:33:21,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-02-15 04:33:21,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-02-15 04:33:21,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-02-15 04:33:21,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-02-15 04:33:21,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-02-15 04:33:21,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-02-15 04:33:21,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-02-15 04:33:21,853 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-02-15 04:33:21,853 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-02-15 04:33:21,854 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-02-15 04:33:21,854 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-02-15 04:33:21,854 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-02-15 04:33:21,854 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-02-15 04:33:21,854 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-02-15 04:33:21,854 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-02-15 04:33:21,854 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-02-15 04:33:21,854 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-02-15 04:33:21,854 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-02-15 04:33:21,854 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-02-15 04:33:21,854 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-02-15 04:33:21,854 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-02-15 04:33:21,854 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-02-15 04:33:21,854 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-02-15 04:33:21,854 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-02-15 04:33:21,854 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-02-15 04:33:21,854 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-02-15 04:33:21,854 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-02-15 04:33:21,855 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-02-15 04:33:21,855 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-02-15 04:33:21,855 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-02-15 04:33:21,855 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-02-15 04:33:21,855 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-02-15 04:33:21,855 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-02-15 04:33:21,855 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-02-15 04:33:21,855 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-02-15 04:33:21,856 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-02-15 04:33:21,856 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-02-15 04:33:21,856 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-02-15 04:33:21,856 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-02-15 04:33:21,856 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-02-15 04:33:21,857 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-02-15 04:33:21,857 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-02-15 04:33:21,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-02-15 04:33:21,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-02-15 04:33:21,857 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-02-15 04:33:21,857 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-02-15 04:33:21,857 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-02-15 04:33:21,858 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-02-15 04:33:21,858 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-02-15 04:33:21,858 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-02-15 04:33:21,858 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-02-15 04:33:21,858 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-02-15 04:33:21,858 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-02-15 04:33:21,858 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-02-15 04:33:21,858 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-02-15 04:33:21,858 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-02-15 04:33:21,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-02-15 04:33:21,858 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-02-15 04:33:21,858 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-02-15 04:33:21,858 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-02-15 04:33:21,858 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 04:33:21,858 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 04:33:21,858 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 04:33:21,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 04:33:21,859 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-02-15 04:33:21,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-15 04:33:21,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-15 04:33:21,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-15 04:33:21,859 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-02-15 04:33:21,859 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2022-02-15 04:33:21,859 INFO L130 BoogieDeclarations]: Found specification of procedure swprintf [2022-02-15 04:33:21,860 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-02-15 04:33:21,860 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-02-15 04:33:21,860 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-02-15 04:33:21,860 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-02-15 04:33:21,860 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-02-15 04:33:21,860 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-02-15 04:33:21,860 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-02-15 04:33:21,861 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-02-15 04:33:21,861 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-02-15 04:33:21,861 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-02-15 04:33:21,861 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-02-15 04:33:21,861 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-02-15 04:33:21,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 04:33:21,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 04:33:21,861 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-02-15 04:33:21,861 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-02-15 04:33:21,861 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-02-15 04:33:21,861 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-02-15 04:33:21,862 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-02-15 04:33:21,862 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-02-15 04:33:21,862 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-02-15 04:33:21,862 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-02-15 04:33:21,862 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-02-15 04:33:21,862 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-02-15 04:33:21,862 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-02-15 04:33:21,863 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-02-15 04:33:21,863 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-02-15 04:33:21,863 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-02-15 04:33:21,864 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-02-15 04:33:21,866 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-02-15 04:33:21,866 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-02-15 04:33:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-02-15 04:33:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-02-15 04:33:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-02-15 04:33:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-02-15 04:33:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-02-15 04:33:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-02-15 04:33:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-02-15 04:33:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-02-15 04:33:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-02-15 04:33:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-02-15 04:33:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-02-15 04:33:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-02-15 04:33:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-02-15 04:33:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-02-15 04:33:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-02-15 04:33:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-02-15 04:33:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-02-15 04:33:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-02-15 04:33:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-02-15 04:33:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-02-15 04:33:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-02-15 04:33:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-02-15 04:33:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-02-15 04:33:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-02-15 04:33:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-02-15 04:33:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-02-15 04:33:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-02-15 04:33:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-02-15 04:33:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-02-15 04:33:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-02-15 04:33:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-02-15 04:33:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyUnload [2022-02-15 04:33:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure FlConfigCallBack [2022-02-15 04:33:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure FlInitializeControllerHardware [2022-02-15 04:33:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-02-15 04:33:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-02-15 04:33:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyReadWrite [2022-02-15 04:33:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure FlRecalibrateDrive [2022-02-15 04:33:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure FlDatarateSpecifyConfigure [2022-02-15 04:33:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure FlStartDrive [2022-02-15 04:33:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure FlFinishOperation [2022-02-15 04:33:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure FlDetermineMediaType [2022-02-15 04:33:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyThread [2022-02-15 04:33:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWrite [2022-02-15 04:33:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure FlFormat [2022-02-15 04:33:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure FlIssueCommand [2022-02-15 04:33:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2022-02-15 04:33:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-02-15 04:33:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure FlInterpretError [2022-02-15 04:33:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure FlAllocateIoBuffer [2022-02-15 04:33:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure FlFreeIoBuffer [2022-02-15 04:33:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure FlConsolidateMediaTypeWithBootSector [2022-02-15 04:33:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckBootSector [2022-02-15 04:33:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWriteTrack [2022-02-15 04:33:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-02-15 04:33:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyAddDevice [2022-02-15 04:33:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-02-15 04:33:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPower [2022-02-15 04:33:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-02-15 04:33:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-02-15 04:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-02-15 04:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-02-15 04:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCancelQueuedRequest [2022-02-15 04:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-02-15 04:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure FlHdbit [2022-02-15 04:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-02-15 04:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-02-15 04:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-02-15 04:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-02-15 04:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-15 04:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 04:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-02-15 04:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-02-15 04:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-02-15 04:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-02-15 04:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-02-15 04:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 04:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-02-15 04:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-02-15 04:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 04:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 04:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 04:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-02-15 04:33:21,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-02-15 04:33:21,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-02-15 04:33:21,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-02-15 04:33:22,465 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 04:33:22,469 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 04:33:22,499 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:22,536 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 04:33:22,537 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 04:33:22,538 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:22,544 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 04:33:22,544 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 04:33:24,218 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:24,222 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 04:33:24,222 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 04:33:24,223 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:24,229 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 04:33:24,229 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 04:33:24,232 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:24,238 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 04:33:24,238 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 04:33:24,265 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:24,270 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 04:33:24,270 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 04:33:24,271 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:24,279 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 04:33:24,279 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 04:33:24,280 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:24,287 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 04:33:24,287 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 04:33:24,323 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:24,369 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-02-15 04:33:24,369 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-02-15 04:33:24,425 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:24,429 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 04:33:24,429 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 04:33:24,430 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:24,433 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 04:33:24,434 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 04:33:24,434 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:24,440 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 04:33:24,440 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 04:33:24,449 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:24,454 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 04:33:24,454 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 04:33:24,454 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:24,498 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 04:33:24,498 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 04:33:29,241 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:29,256 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-15 04:33:29,256 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-15 04:33:29,314 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:29,742 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-02-15 04:33:29,742 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-02-15 04:33:30,039 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:30,042 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 04:33:30,042 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 04:33:30,127 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:30,151 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-02-15 04:33:30,151 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-02-15 04:33:30,154 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:30,288 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-02-15 04:33:30,288 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-02-15 04:33:30,289 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:30,340 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-02-15 04:33:30,340 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-02-15 04:33:41,274 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:41,277 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 04:33:41,277 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 04:33:41,375 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:41,378 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 04:33:41,378 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 04:33:41,393 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:43,682 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-02-15 04:33:43,683 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-02-15 04:33:43,714 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:43,909 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-02-15 04:33:43,909 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-02-15 04:33:43,910 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:43,924 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-15 04:33:43,924 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-15 04:33:43,924 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:43,954 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-02-15 04:33:43,954 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-02-15 04:33:43,957 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:43,965 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-02-15 04:33:43,965 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-02-15 04:33:44,001 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:44,005 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 04:33:44,005 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 04:33:44,015 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:44,019 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 04:33:44,019 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 04:33:44,020 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:44,086 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume !false; [2022-02-15 04:33:44,086 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume false; [2022-02-15 04:33:44,131 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 04:33:46,538 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2022-02-15 04:33:46,538 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2022-02-15 04:33:46,560 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 04:33:46,580 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 04:33:46,580 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2022-02-15 04:33:46,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 04:33:46 BoogieIcfgContainer [2022-02-15 04:33:46,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 04:33:46,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 04:33:46,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 04:33:46,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 04:33:46,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 04:33:20" (1/3) ... [2022-02-15 04:33:46,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21abb00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 04:33:46, skipping insertion in model container [2022-02-15 04:33:46,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:33:21" (2/3) ... [2022-02-15 04:33:46,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21abb00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 04:33:46, skipping insertion in model container [2022-02-15 04:33:46,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 04:33:46" (3/3) ... [2022-02-15 04:33:46,589 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-3.c [2022-02-15 04:33:46,596 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 04:33:46,597 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 04:33:46,637 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 04:33:46,641 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=QVASR [2022-02-15 04:33:46,641 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 04:33:46,674 INFO L276 IsEmpty]: Start isEmpty. Operand has 1463 states, 1158 states have (on average 1.5215889464594128) internal successors, (1762), 1199 states have internal predecessors, (1762), 227 states have call successors, (227), 73 states have call predecessors, (227), 73 states have return successors, (227), 221 states have call predecessors, (227), 227 states have call successors, (227) [2022-02-15 04:33:46,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-15 04:33:46,683 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:33:46,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:33:46,685 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:33:46,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:33:46,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1208806804, now seen corresponding path program 1 times [2022-02-15 04:33:46,693 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:33:46,694 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294904230] [2022-02-15 04:33:46,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:33:46,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:33:46,810 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:33:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:33:47,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:33:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:33:47,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:33:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:33:47,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:33:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:33:47,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:33:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:33:47,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:33:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:33:47,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:33:47,630 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:33:47,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294904230] [2022-02-15 04:33:47,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1294904230] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:33:47,632 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:33:47,632 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 04:33:47,633 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489074780] [2022-02-15 04:33:47,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:33:47,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 04:33:47,636 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:33:47,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 04:33:47,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-15 04:33:47,666 INFO L87 Difference]: Start difference. First operand has 1463 states, 1158 states have (on average 1.5215889464594128) internal successors, (1762), 1199 states have internal predecessors, (1762), 227 states have call successors, (227), 73 states have call predecessors, (227), 73 states have return successors, (227), 221 states have call predecessors, (227), 227 states have call successors, (227) Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-15 04:33:55,889 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:33:57,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:33:57,242 INFO L93 Difference]: Finished difference Result 1453 states and 2231 transitions. [2022-02-15 04:33:57,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 04:33:57,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2022-02-15 04:33:57,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:33:57,266 INFO L225 Difference]: With dead ends: 1453 [2022-02-15 04:33:57,266 INFO L226 Difference]: Without dead ends: 858 [2022-02-15 04:33:57,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-02-15 04:33:57,287 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 1345 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 3103 mSolverCounterSat, 617 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 3721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 3103 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-02-15 04:33:57,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1379 Valid, 1283 Invalid, 3721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [617 Valid, 3103 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2022-02-15 04:33:57,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2022-02-15 04:33:57,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 670. [2022-02-15 04:33:57,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 502 states have (on average 1.4203187250996017) internal successors, (713), 534 states have internal predecessors, (713), 121 states have call successors, (121), 48 states have call predecessors, (121), 46 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-02-15 04:33:57,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 931 transitions. [2022-02-15 04:33:57,411 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 931 transitions. Word has length 37 [2022-02-15 04:33:57,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:33:57,412 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 931 transitions. [2022-02-15 04:33:57,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-15 04:33:57,412 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 931 transitions. [2022-02-15 04:33:57,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-15 04:33:57,413 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:33:57,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:33:57,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 04:33:57,414 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:33:57,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:33:57,414 INFO L85 PathProgramCache]: Analyzing trace with hash 171558063, now seen corresponding path program 1 times [2022-02-15 04:33:57,414 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:33:57,414 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911971648] [2022-02-15 04:33:57,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:33:57,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:33:57,426 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:33:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:33:57,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:33:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:33:57,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:33:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:33:57,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:33:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:33:57,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:33:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:33:57,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:33:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:33:57,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 04:33:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:33:57,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:33:57,907 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:33:57,907 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911971648] [2022-02-15 04:33:57,907 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [911971648] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:33:57,907 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:33:57,907 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 04:33:57,908 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487963063] [2022-02-15 04:33:57,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:33:57,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 04:33:57,909 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:33:57,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 04:33:57,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-15 04:33:57,910 INFO L87 Difference]: Start difference. First operand 670 states and 931 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 04:34:02,491 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:34:04,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:34:08,634 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:34:11,476 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:34:13,538 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:34:17,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:34:17,097 INFO L93 Difference]: Finished difference Result 1951 states and 2856 transitions. [2022-02-15 04:34:17,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 04:34:17,103 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2022-02-15 04:34:17,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:34:17,112 INFO L225 Difference]: With dead ends: 1951 [2022-02-15 04:34:17,112 INFO L226 Difference]: Without dead ends: 1471 [2022-02-15 04:34:17,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-02-15 04:34:17,114 INFO L933 BasicCegarLoop]: 941 mSDtfsCounter, 3479 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 3508 mSolverCounterSat, 1403 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3520 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 4916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1403 IncrementalHoareTripleChecker+Valid, 3508 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2022-02-15 04:34:17,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3520 Valid, 1668 Invalid, 4916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1403 Valid, 3508 Invalid, 5 Unknown, 0 Unchecked, 18.1s Time] [2022-02-15 04:34:17,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2022-02-15 04:34:17,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1230. [2022-02-15 04:34:17,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 946 states have (on average 1.4038054968287526) internal successors, (1328), 977 states have internal predecessors, (1328), 187 states have call successors, (187), 83 states have call predecessors, (187), 96 states have return successors, (247), 179 states have call predecessors, (247), 171 states have call successors, (247) [2022-02-15 04:34:17,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1762 transitions. [2022-02-15 04:34:17,251 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1762 transitions. Word has length 42 [2022-02-15 04:34:17,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:34:17,252 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 1762 transitions. [2022-02-15 04:34:17,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 04:34:17,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1762 transitions. [2022-02-15 04:34:17,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-15 04:34:17,254 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:34:17,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:34:17,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 04:34:17,254 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:34:17,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:34:17,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1220689, now seen corresponding path program 1 times [2022-02-15 04:34:17,254 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:34:17,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146181289] [2022-02-15 04:34:17,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:34:17,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:34:17,264 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:34:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:17,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:34:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:17,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:34:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:17,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:34:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:17,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:34:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:17,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:34:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:17,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 04:34:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:17,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-15 04:34:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:17,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:34:17,812 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:34:17,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146181289] [2022-02-15 04:34:17,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2146181289] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:34:17,812 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:34:17,812 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 04:34:17,812 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102861707] [2022-02-15 04:34:17,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:34:17,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 04:34:17,813 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:34:17,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 04:34:17,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-15 04:34:17,813 INFO L87 Difference]: Start difference. First operand 1230 states and 1762 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-15 04:34:23,990 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:34:27,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:34:27,814 INFO L93 Difference]: Finished difference Result 2279 states and 3379 transitions. [2022-02-15 04:34:27,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 04:34:27,815 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2022-02-15 04:34:27,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:34:27,824 INFO L225 Difference]: With dead ends: 2279 [2022-02-15 04:34:27,824 INFO L226 Difference]: Without dead ends: 2260 [2022-02-15 04:34:27,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-02-15 04:34:27,826 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 3868 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 2853 mSolverCounterSat, 1490 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3928 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 4344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1490 IncrementalHoareTripleChecker+Valid, 2853 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-02-15 04:34:27,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3928 Valid, 1301 Invalid, 4344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1490 Valid, 2853 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-02-15 04:34:27,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2022-02-15 04:34:28,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 1905. [2022-02-15 04:34:28,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1476 states have (on average 1.420731707317073) internal successors, (2097), 1527 states have internal predecessors, (2097), 279 states have call successors, (279), 129 states have call predecessors, (279), 149 states have return successors, (393), 262 states have call predecessors, (393), 263 states have call successors, (393) [2022-02-15 04:34:28,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2769 transitions. [2022-02-15 04:34:28,065 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2769 transitions. Word has length 54 [2022-02-15 04:34:28,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:34:28,067 INFO L470 AbstractCegarLoop]: Abstraction has 1905 states and 2769 transitions. [2022-02-15 04:34:28,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-15 04:34:28,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2769 transitions. [2022-02-15 04:34:28,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-15 04:34:28,073 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:34:28,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:34:28,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 04:34:28,073 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:34:28,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:34:28,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1955103331, now seen corresponding path program 1 times [2022-02-15 04:34:28,073 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:34:28,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095318839] [2022-02-15 04:34:28,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:34:28,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:34:28,086 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:34:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:28,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:34:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:28,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:34:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:28,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:34:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:28,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:34:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:28,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:34:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:28,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 04:34:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:28,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:34:28,555 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:34:28,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095318839] [2022-02-15 04:34:28,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2095318839] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:34:28,557 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:34:28,557 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 04:34:28,558 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715844463] [2022-02-15 04:34:28,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:34:28,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 04:34:28,558 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:34:28,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 04:34:28,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-15 04:34:28,559 INFO L87 Difference]: Start difference. First operand 1905 states and 2769 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 04:34:35,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:34:37,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:34:37,570 INFO L93 Difference]: Finished difference Result 2254 states and 3363 transitions. [2022-02-15 04:34:37,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 04:34:37,571 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-02-15 04:34:37,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:34:37,580 INFO L225 Difference]: With dead ends: 2254 [2022-02-15 04:34:37,580 INFO L226 Difference]: Without dead ends: 2250 [2022-02-15 04:34:37,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-02-15 04:34:37,581 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 1720 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 3121 mSolverCounterSat, 754 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 3876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 754 IncrementalHoareTripleChecker+Valid, 3121 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-02-15 04:34:37,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 1278 Invalid, 3876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [754 Valid, 3121 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2022-02-15 04:34:37,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2022-02-15 04:34:37,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 1942. [2022-02-15 04:34:37,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1509 states have (on average 1.420808482438701) internal successors, (2144), 1557 states have internal predecessors, (2144), 281 states have call successors, (281), 132 states have call predecessors, (281), 151 states have return successors, (395), 264 states have call predecessors, (395), 265 states have call successors, (395) [2022-02-15 04:34:37,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 2820 transitions. [2022-02-15 04:34:37,837 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 2820 transitions. Word has length 55 [2022-02-15 04:34:37,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:34:37,837 INFO L470 AbstractCegarLoop]: Abstraction has 1942 states and 2820 transitions. [2022-02-15 04:34:37,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 04:34:37,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 2820 transitions. [2022-02-15 04:34:37,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-15 04:34:37,838 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:34:37,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:34:37,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 04:34:37,838 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:34:37,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:34:37,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1599289490, now seen corresponding path program 1 times [2022-02-15 04:34:37,839 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:34:37,839 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016921526] [2022-02-15 04:34:37,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:34:37,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:34:37,850 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:34:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:38,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:34:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:38,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:34:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:38,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:34:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:38,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:34:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:38,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:34:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:38,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 04:34:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:38,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:34:38,298 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:34:38,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016921526] [2022-02-15 04:34:38,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2016921526] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:34:38,299 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:34:38,299 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 04:34:38,299 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62084384] [2022-02-15 04:34:38,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:34:38,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 04:34:38,299 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:34:38,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 04:34:38,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-15 04:34:38,300 INFO L87 Difference]: Start difference. First operand 1942 states and 2820 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 04:34:44,985 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:34:49,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:34:49,786 INFO L93 Difference]: Finished difference Result 3881 states and 5849 transitions. [2022-02-15 04:34:49,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 04:34:49,786 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-02-15 04:34:49,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:34:49,802 INFO L225 Difference]: With dead ends: 3881 [2022-02-15 04:34:49,802 INFO L226 Difference]: Without dead ends: 3878 [2022-02-15 04:34:49,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-02-15 04:34:49,805 INFO L933 BasicCegarLoop]: 1152 mSDtfsCounter, 2146 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 4383 mSolverCounterSat, 914 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2192 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 5298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 4383 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:34:49,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2192 Valid, 1872 Invalid, 5298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 4383 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2022-02-15 04:34:49,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2022-02-15 04:34:50,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3105. [2022-02-15 04:34:50,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3105 states, 2444 states have (on average 1.4320785597381342) internal successors, (3500), 2499 states have internal predecessors, (3500), 415 states have call successors, (415), 218 states have call predecessors, (415), 245 states have return successors, (609), 399 states have call predecessors, (609), 399 states have call successors, (609) [2022-02-15 04:34:50,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3105 states to 3105 states and 4524 transitions. [2022-02-15 04:34:50,250 INFO L78 Accepts]: Start accepts. Automaton has 3105 states and 4524 transitions. Word has length 55 [2022-02-15 04:34:50,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:34:50,252 INFO L470 AbstractCegarLoop]: Abstraction has 3105 states and 4524 transitions. [2022-02-15 04:34:50,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 04:34:50,252 INFO L276 IsEmpty]: Start isEmpty. Operand 3105 states and 4524 transitions. [2022-02-15 04:34:50,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-15 04:34:50,254 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:34:50,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:34:50,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 04:34:50,255 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:34:50,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:34:50,255 INFO L85 PathProgramCache]: Analyzing trace with hash 2095199445, now seen corresponding path program 1 times [2022-02-15 04:34:50,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:34:50,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233404749] [2022-02-15 04:34:50,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:34:50,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:34:50,264 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:34:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:50,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:34:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:50,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:34:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:50,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:34:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:50,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:34:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:50,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:34:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:50,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 04:34:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:34:50,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:34:50,821 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:34:50,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233404749] [2022-02-15 04:34:50,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [233404749] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:34:50,821 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:34:50,821 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 04:34:50,821 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462756080] [2022-02-15 04:34:50,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:34:50,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 04:34:50,822 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:34:50,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 04:34:50,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-02-15 04:34:50,823 INFO L87 Difference]: Start difference. First operand 3105 states and 4524 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-15 04:34:56,755 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:34:58,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:35:03,256 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:35:07,984 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:35:10,126 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:35:16,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:35:16,000 INFO L93 Difference]: Finished difference Result 6653 states and 9861 transitions. [2022-02-15 04:35:16,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 04:35:16,001 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-02-15 04:35:16,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:35:16,016 INFO L225 Difference]: With dead ends: 6653 [2022-02-15 04:35:16,016 INFO L226 Difference]: Without dead ends: 3833 [2022-02-15 04:35:16,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 04:35:16,024 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 5008 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 6699 mSolverCounterSat, 2195 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5054 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 8899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2195 IncrementalHoareTripleChecker+Valid, 6699 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2022-02-15 04:35:16,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5054 Valid, 2055 Invalid, 8899 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2195 Valid, 6699 Invalid, 5 Unknown, 0 Unchecked, 22.1s Time] [2022-02-15 04:35:16,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2022-02-15 04:35:16,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 3099. [2022-02-15 04:35:16,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3099 states, 2438 states have (on average 1.4298605414273995) internal successors, (3486), 2493 states have internal predecessors, (3486), 415 states have call successors, (415), 218 states have call predecessors, (415), 245 states have return successors, (609), 399 states have call predecessors, (609), 399 states have call successors, (609) [2022-02-15 04:35:16,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 4510 transitions. [2022-02-15 04:35:16,485 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 4510 transitions. Word has length 56 [2022-02-15 04:35:16,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:35:16,486 INFO L470 AbstractCegarLoop]: Abstraction has 3099 states and 4510 transitions. [2022-02-15 04:35:16,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-15 04:35:16,486 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 4510 transitions. [2022-02-15 04:35:16,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-15 04:35:16,487 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:35:16,487 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:35:16,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 04:35:16,487 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:35:16,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:35:16,488 INFO L85 PathProgramCache]: Analyzing trace with hash -363771634, now seen corresponding path program 1 times [2022-02-15 04:35:16,488 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:35:16,488 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370047161] [2022-02-15 04:35:16,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:35:16,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:35:16,497 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:35:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:16,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:35:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:16,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:35:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:16,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:35:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:16,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:35:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:16,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:35:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:16,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 04:35:16,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:16,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 04:35:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:17,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:35:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:35:17,025 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:35:17,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370047161] [2022-02-15 04:35:17,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1370047161] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:35:17,025 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:35:17,025 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 04:35:17,025 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724461643] [2022-02-15 04:35:17,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:35:17,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 04:35:17,026 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:35:17,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 04:35:17,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-15 04:35:17,027 INFO L87 Difference]: Start difference. First operand 3099 states and 4510 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 04:35:24,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:35:30,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:35:30,167 INFO L93 Difference]: Finished difference Result 4462 states and 6724 transitions. [2022-02-15 04:35:30,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 04:35:30,167 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 57 [2022-02-15 04:35:30,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:35:30,184 INFO L225 Difference]: With dead ends: 4462 [2022-02-15 04:35:30,184 INFO L226 Difference]: Without dead ends: 4457 [2022-02-15 04:35:30,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2022-02-15 04:35:30,187 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 2954 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 4423 mSolverCounterSat, 1423 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2988 SdHoareTripleChecker+Valid, 2028 SdHoareTripleChecker+Invalid, 5847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1423 IncrementalHoareTripleChecker+Valid, 4423 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-02-15 04:35:30,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2988 Valid, 2028 Invalid, 5847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1423 Valid, 4423 Invalid, 1 Unknown, 0 Unchecked, 11.4s Time] [2022-02-15 04:35:30,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4457 states. [2022-02-15 04:35:30,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4457 to 3755. [2022-02-15 04:35:30,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 2956 states have (on average 1.4336941813261164) internal successors, (4238), 3023 states have internal predecessors, (4238), 500 states have call successors, (500), 258 states have call predecessors, (500), 298 states have return successors, (751), 491 states have call predecessors, (751), 484 states have call successors, (751) [2022-02-15 04:35:30,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5489 transitions. [2022-02-15 04:35:30,763 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5489 transitions. Word has length 57 [2022-02-15 04:35:30,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:35:30,764 INFO L470 AbstractCegarLoop]: Abstraction has 3755 states and 5489 transitions. [2022-02-15 04:35:30,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 04:35:30,764 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5489 transitions. [2022-02-15 04:35:30,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-15 04:35:30,765 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:35:30,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:35:30,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 04:35:30,765 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:35:30,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:35:30,766 INFO L85 PathProgramCache]: Analyzing trace with hash 2058578860, now seen corresponding path program 1 times [2022-02-15 04:35:30,766 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:35:30,766 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254983289] [2022-02-15 04:35:30,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:35:30,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:35:30,776 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:35:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:31,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:35:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:31,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:35:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:31,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:35:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:31,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:35:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:31,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:35:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:31,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 04:35:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:31,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 04:35:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:31,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:35:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:31,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:35:31,307 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:35:31,307 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254983289] [2022-02-15 04:35:31,307 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1254983289] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:35:31,307 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:35:31,307 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 04:35:31,307 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661401521] [2022-02-15 04:35:31,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:35:31,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 04:35:31,308 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:35:31,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 04:35:31,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-15 04:35:31,308 INFO L87 Difference]: Start difference. First operand 3755 states and 5489 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:35:39,239 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:35:43,451 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:35:47,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:35:47,164 INFO L93 Difference]: Finished difference Result 4457 states and 6713 transitions. [2022-02-15 04:35:47,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 04:35:47,164 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2022-02-15 04:35:47,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:35:47,180 INFO L225 Difference]: With dead ends: 4457 [2022-02-15 04:35:47,180 INFO L226 Difference]: Without dead ends: 4451 [2022-02-15 04:35:47,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 04:35:47,182 INFO L933 BasicCegarLoop]: 1033 mSDtfsCounter, 4615 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 4434 mSolverCounterSat, 2199 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4665 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 6635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2199 IncrementalHoareTripleChecker+Valid, 4434 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-02-15 04:35:47,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4665 Valid, 1836 Invalid, 6635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2199 Valid, 4434 Invalid, 2 Unknown, 0 Unchecked, 12.7s Time] [2022-02-15 04:35:47,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2022-02-15 04:35:47,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 3755. [2022-02-15 04:35:47,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 2956 states have (on average 1.4333558863328824) internal successors, (4237), 3023 states have internal predecessors, (4237), 500 states have call successors, (500), 258 states have call predecessors, (500), 298 states have return successors, (751), 491 states have call predecessors, (751), 484 states have call successors, (751) [2022-02-15 04:35:47,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5488 transitions. [2022-02-15 04:35:47,784 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5488 transitions. Word has length 58 [2022-02-15 04:35:47,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:35:47,784 INFO L470 AbstractCegarLoop]: Abstraction has 3755 states and 5488 transitions. [2022-02-15 04:35:47,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:35:47,784 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5488 transitions. [2022-02-15 04:35:47,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-15 04:35:47,785 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:35:47,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:35:47,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 04:35:47,786 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:35:47,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:35:47,786 INFO L85 PathProgramCache]: Analyzing trace with hash 259939624, now seen corresponding path program 1 times [2022-02-15 04:35:47,786 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:35:47,786 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137796415] [2022-02-15 04:35:47,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:35:47,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:35:47,796 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:35:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:48,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:35:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:48,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:35:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:48,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:35:48,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:48,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:35:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:48,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:35:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:48,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 04:35:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:48,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-15 04:35:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:48,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:35:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:35:48,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:35:48,299 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:35:48,300 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137796415] [2022-02-15 04:35:48,300 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2137796415] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:35:48,300 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:35:48,300 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 04:35:48,300 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231014860] [2022-02-15 04:35:48,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:35:48,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 04:35:48,301 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:35:48,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 04:35:48,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-15 04:35:48,301 INFO L87 Difference]: Start difference. First operand 3755 states and 5488 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:35:54,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:35:59,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:36:06,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:36:06,453 INFO L93 Difference]: Finished difference Result 4518 states and 6806 transitions. [2022-02-15 04:36:06,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 04:36:06,453 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2022-02-15 04:36:06,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:36:06,470 INFO L225 Difference]: With dead ends: 4518 [2022-02-15 04:36:06,470 INFO L226 Difference]: Without dead ends: 4512 [2022-02-15 04:36:06,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 04:36:06,472 INFO L933 BasicCegarLoop]: 1034 mSDtfsCounter, 4073 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 5029 mSolverCounterSat, 1958 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4123 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 6989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1958 IncrementalHoareTripleChecker+Valid, 5029 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-02-15 04:36:06,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4123 Valid, 1935 Invalid, 6989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1958 Valid, 5029 Invalid, 2 Unknown, 0 Unchecked, 14.9s Time] [2022-02-15 04:36:06,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4512 states. [2022-02-15 04:36:07,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4512 to 3793. [2022-02-15 04:36:07,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3793 states, 2990 states have (on average 1.4361204013377926) internal successors, (4294), 3059 states have internal predecessors, (4294), 502 states have call successors, (502), 260 states have call predecessors, (502), 300 states have return successors, (753), 491 states have call predecessors, (753), 486 states have call successors, (753) [2022-02-15 04:36:07,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3793 states to 3793 states and 5549 transitions. [2022-02-15 04:36:07,112 INFO L78 Accepts]: Start accepts. Automaton has 3793 states and 5549 transitions. Word has length 58 [2022-02-15 04:36:07,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:36:07,112 INFO L470 AbstractCegarLoop]: Abstraction has 3793 states and 5549 transitions. [2022-02-15 04:36:07,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:36:07,113 INFO L276 IsEmpty]: Start isEmpty. Operand 3793 states and 5549 transitions. [2022-02-15 04:36:07,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-15 04:36:07,114 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:36:07,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:36:07,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 04:36:07,114 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:36:07,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:36:07,115 INFO L85 PathProgramCache]: Analyzing trace with hash -449310488, now seen corresponding path program 1 times [2022-02-15 04:36:07,115 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:36:07,115 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863491773] [2022-02-15 04:36:07,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:36:07,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:36:07,124 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:36:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:07,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:36:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:07,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:36:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:07,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:36:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:07,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:36:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:07,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:36:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:07,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 04:36:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:07,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-15 04:36:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:07,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:36:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:07,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:36:07,686 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:36:07,686 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863491773] [2022-02-15 04:36:07,686 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [863491773] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:36:07,686 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:36:07,686 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 04:36:07,686 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10536336] [2022-02-15 04:36:07,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:36:07,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 04:36:07,686 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:36:07,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 04:36:07,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-15 04:36:07,687 INFO L87 Difference]: Start difference. First operand 3793 states and 5549 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 04:36:13,135 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:36:19,050 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:36:22,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:36:22,002 INFO L93 Difference]: Finished difference Result 4510 states and 6799 transitions. [2022-02-15 04:36:22,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 04:36:22,003 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 59 [2022-02-15 04:36:22,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:36:22,019 INFO L225 Difference]: With dead ends: 4510 [2022-02-15 04:36:22,019 INFO L226 Difference]: Without dead ends: 4493 [2022-02-15 04:36:22,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-02-15 04:36:22,023 INFO L933 BasicCegarLoop]: 721 mSDtfsCounter, 2066 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 4669 mSolverCounterSat, 910 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2105 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 5581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 910 IncrementalHoareTripleChecker+Valid, 4669 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-02-15 04:36:22,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2105 Valid, 1735 Invalid, 5581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [910 Valid, 4669 Invalid, 2 Unknown, 0 Unchecked, 12.7s Time] [2022-02-15 04:36:22,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4493 states. [2022-02-15 04:36:22,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4493 to 3791. [2022-02-15 04:36:22,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3791 states, 2989 states have (on average 1.43593174974908) internal successors, (4292), 3058 states have internal predecessors, (4292), 501 states have call successors, (501), 260 states have call predecessors, (501), 300 states have return successors, (752), 490 states have call predecessors, (752), 485 states have call successors, (752) [2022-02-15 04:36:22,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3791 states to 3791 states and 5545 transitions. [2022-02-15 04:36:22,769 INFO L78 Accepts]: Start accepts. Automaton has 3791 states and 5545 transitions. Word has length 59 [2022-02-15 04:36:22,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:36:22,769 INFO L470 AbstractCegarLoop]: Abstraction has 3791 states and 5545 transitions. [2022-02-15 04:36:22,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 04:36:22,770 INFO L276 IsEmpty]: Start isEmpty. Operand 3791 states and 5545 transitions. [2022-02-15 04:36:22,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-15 04:36:22,771 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:36:22,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:36:22,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 04:36:22,772 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:36:22,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:36:22,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1749808949, now seen corresponding path program 1 times [2022-02-15 04:36:22,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:36:22,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519461445] [2022-02-15 04:36:22,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:36:22,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:36:22,793 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:36:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:23,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:36:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:23,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:36:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:23,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:36:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:23,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:36:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:23,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:36:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:23,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 04:36:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:23,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 04:36:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:23,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:36:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:23,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:36:23,424 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:36:23,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519461445] [2022-02-15 04:36:23,424 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1519461445] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:36:23,424 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:36:23,424 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 04:36:23,424 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019848898] [2022-02-15 04:36:23,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:36:23,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 04:36:23,424 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:36:23,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 04:36:23,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-15 04:36:23,425 INFO L87 Difference]: Start difference. First operand 3791 states and 5545 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 04:36:32,761 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:36:36,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:36:36,094 INFO L93 Difference]: Finished difference Result 4508 states and 6795 transitions. [2022-02-15 04:36:36,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 04:36:36,094 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 60 [2022-02-15 04:36:36,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:36:36,107 INFO L225 Difference]: With dead ends: 4508 [2022-02-15 04:36:36,107 INFO L226 Difference]: Without dead ends: 4486 [2022-02-15 04:36:36,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-02-15 04:36:36,109 INFO L933 BasicCegarLoop]: 719 mSDtfsCounter, 1922 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 5022 mSolverCounterSat, 771 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1961 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 5794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 5022 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-02-15 04:36:36,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1961 Valid, 1733 Invalid, 5794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 5022 Invalid, 1 Unknown, 0 Unchecked, 11.1s Time] [2022-02-15 04:36:36,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2022-02-15 04:36:36,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 3784. [2022-02-15 04:36:36,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3784 states, 2985 states have (on average 1.436180904522613) internal successors, (4287), 3054 states have internal predecessors, (4287), 499 states have call successors, (499), 259 states have call predecessors, (499), 299 states have return successors, (750), 488 states have call predecessors, (750), 483 states have call successors, (750) [2022-02-15 04:36:36,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 5536 transitions. [2022-02-15 04:36:36,797 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 5536 transitions. Word has length 60 [2022-02-15 04:36:36,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:36:36,798 INFO L470 AbstractCegarLoop]: Abstraction has 3784 states and 5536 transitions. [2022-02-15 04:36:36,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 04:36:36,798 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 5536 transitions. [2022-02-15 04:36:36,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-15 04:36:36,799 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:36:36,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:36:36,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 04:36:36,799 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:36:36,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:36:36,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1740462473, now seen corresponding path program 1 times [2022-02-15 04:36:36,800 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:36:36,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111087220] [2022-02-15 04:36:36,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:36:36,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:36:36,809 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:36:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:37,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:36:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:37,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:36:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:37,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:36:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:37,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:36:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:37,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:36:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:37,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 04:36:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:37,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-02-15 04:36:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:37,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:36:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:37,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:36:37,267 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:36:37,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111087220] [2022-02-15 04:36:37,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [111087220] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:36:37,267 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:36:37,267 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 04:36:37,268 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676857415] [2022-02-15 04:36:37,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:36:37,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 04:36:37,268 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:36:37,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 04:36:37,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-02-15 04:36:37,268 INFO L87 Difference]: Start difference. First operand 3784 states and 5536 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:36:44,050 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:36:50,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:36:50,918 INFO L93 Difference]: Finished difference Result 12302 states and 18979 transitions. [2022-02-15 04:36:50,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 04:36:50,918 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2022-02-15 04:36:50,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:36:50,945 INFO L225 Difference]: With dead ends: 12302 [2022-02-15 04:36:50,945 INFO L226 Difference]: Without dead ends: 8762 [2022-02-15 04:36:50,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-02-15 04:36:50,964 INFO L933 BasicCegarLoop]: 919 mSDtfsCounter, 3106 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 3738 mSolverCounterSat, 1391 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3165 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 5130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1391 IncrementalHoareTripleChecker+Valid, 3738 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-02-15 04:36:50,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3165 Valid, 1876 Invalid, 5130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1391 Valid, 3738 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2022-02-15 04:36:50,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8762 states. [2022-02-15 04:36:52,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8762 to 7553. [2022-02-15 04:36:52,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7553 states, 5959 states have (on average 1.4463836214129888) internal successors, (8619), 6145 states have internal predecessors, (8619), 1012 states have call successors, (1012), 479 states have call predecessors, (1012), 581 states have return successors, (1808), 964 states have call predecessors, (1808), 999 states have call successors, (1808) [2022-02-15 04:36:52,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7553 states to 7553 states and 11439 transitions. [2022-02-15 04:36:52,523 INFO L78 Accepts]: Start accepts. Automaton has 7553 states and 11439 transitions. Word has length 69 [2022-02-15 04:36:52,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:36:52,524 INFO L470 AbstractCegarLoop]: Abstraction has 7553 states and 11439 transitions. [2022-02-15 04:36:52,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:36:52,524 INFO L276 IsEmpty]: Start isEmpty. Operand 7553 states and 11439 transitions. [2022-02-15 04:36:52,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-15 04:36:52,525 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:36:52,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:36:52,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 04:36:52,525 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:36:52,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:36:52,526 INFO L85 PathProgramCache]: Analyzing trace with hash -858477288, now seen corresponding path program 1 times [2022-02-15 04:36:52,526 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:36:52,526 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059252100] [2022-02-15 04:36:52,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:36:52,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:36:52,535 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:36:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:52,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:36:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:52,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:36:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:52,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:36:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:52,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:36:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:52,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:36:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:52,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 04:36:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:52,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-15 04:36:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:36:52,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:36:52,989 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:36:52,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059252100] [2022-02-15 04:36:52,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1059252100] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:36:52,989 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:36:52,989 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-15 04:36:52,989 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700713951] [2022-02-15 04:36:52,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:36:52,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-15 04:36:52,990 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:36:52,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-15 04:36:52,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-15 04:36:52,990 INFO L87 Difference]: Start difference. First operand 7553 states and 11439 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-15 04:37:01,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:37:05,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:37:05,872 INFO L93 Difference]: Finished difference Result 15329 states and 23754 transitions. [2022-02-15 04:37:05,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 04:37:05,873 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 3 states have internal predecessors, (45), 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 61 [2022-02-15 04:37:05,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:37:05,903 INFO L225 Difference]: With dead ends: 15329 [2022-02-15 04:37:05,903 INFO L226 Difference]: Without dead ends: 8851 [2022-02-15 04:37:05,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-02-15 04:37:05,929 INFO L933 BasicCegarLoop]: 712 mSDtfsCounter, 1509 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 3942 mSolverCounterSat, 642 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 4585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 642 IncrementalHoareTripleChecker+Valid, 3942 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-02-15 04:37:05,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 1401 Invalid, 4585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [642 Valid, 3942 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2022-02-15 04:37:05,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8851 states. [2022-02-15 04:37:07,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8851 to 7693. [2022-02-15 04:37:07,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7693 states, 6099 states have (on average 1.4341695359895066) internal successors, (8747), 6285 states have internal predecessors, (8747), 1012 states have call successors, (1012), 479 states have call predecessors, (1012), 581 states have return successors, (1808), 964 states have call predecessors, (1808), 999 states have call successors, (1808) [2022-02-15 04:37:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7693 states to 7693 states and 11567 transitions. [2022-02-15 04:37:07,609 INFO L78 Accepts]: Start accepts. Automaton has 7693 states and 11567 transitions. Word has length 61 [2022-02-15 04:37:07,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:37:07,609 INFO L470 AbstractCegarLoop]: Abstraction has 7693 states and 11567 transitions. [2022-02-15 04:37:07,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-15 04:37:07,610 INFO L276 IsEmpty]: Start isEmpty. Operand 7693 states and 11567 transitions. [2022-02-15 04:37:07,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-15 04:37:07,611 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:37:07,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:37:07,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 04:37:07,611 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:37:07,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:37:07,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1733980064, now seen corresponding path program 1 times [2022-02-15 04:37:07,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:37:07,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817719599] [2022-02-15 04:37:07,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:37:07,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:37:07,622 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:37:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:07,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:37:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:07,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:37:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:07,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:37:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:07,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:37:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:08,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:37:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:08,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 04:37:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:08,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-15 04:37:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:08,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 04:37:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:08,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:37:08,150 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:37:08,151 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817719599] [2022-02-15 04:37:08,151 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1817719599] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:37:08,151 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:37:08,151 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 04:37:08,151 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088516149] [2022-02-15 04:37:08,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:37:08,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 04:37:08,152 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:37:08,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 04:37:08,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-15 04:37:08,152 INFO L87 Difference]: Start difference. First operand 7693 states and 11567 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:37:13,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:37:16,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:37:18,198 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:37:23,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:37:29,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:37:29,042 INFO L93 Difference]: Finished difference Result 16412 states and 24974 transitions. [2022-02-15 04:37:29,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 04:37:29,043 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2022-02-15 04:37:29,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:37:29,070 INFO L225 Difference]: With dead ends: 16412 [2022-02-15 04:37:29,070 INFO L226 Difference]: Without dead ends: 8747 [2022-02-15 04:37:29,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2022-02-15 04:37:29,098 INFO L933 BasicCegarLoop]: 712 mSDtfsCounter, 1281 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 5614 mSolverCounterSat, 552 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 1866 SdHoareTripleChecker+Invalid, 6170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 552 IncrementalHoareTripleChecker+Valid, 5614 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-02-15 04:37:29,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1318 Valid, 1866 Invalid, 6170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [552 Valid, 5614 Invalid, 4 Unknown, 0 Unchecked, 17.8s Time] [2022-02-15 04:37:29,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8747 states. [2022-02-15 04:37:30,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8747 to 7693. [2022-02-15 04:37:30,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7693 states, 6099 states have (on average 1.4340055746843745) internal successors, (8746), 6285 states have internal predecessors, (8746), 1012 states have call successors, (1012), 479 states have call predecessors, (1012), 581 states have return successors, (1808), 964 states have call predecessors, (1808), 999 states have call successors, (1808) [2022-02-15 04:37:30,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7693 states to 7693 states and 11566 transitions. [2022-02-15 04:37:30,761 INFO L78 Accepts]: Start accepts. Automaton has 7693 states and 11566 transitions. Word has length 64 [2022-02-15 04:37:30,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:37:30,761 INFO L470 AbstractCegarLoop]: Abstraction has 7693 states and 11566 transitions. [2022-02-15 04:37:30,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:37:30,761 INFO L276 IsEmpty]: Start isEmpty. Operand 7693 states and 11566 transitions. [2022-02-15 04:37:30,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-15 04:37:30,763 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:37:30,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:37:30,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 04:37:30,763 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:37:30,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:37:30,763 INFO L85 PathProgramCache]: Analyzing trace with hash 605121929, now seen corresponding path program 1 times [2022-02-15 04:37:30,763 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:37:30,763 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849410108] [2022-02-15 04:37:30,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:37:30,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:37:30,774 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:37:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:31,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:37:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:31,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:37:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:31,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:37:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:31,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:37:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:31,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:37:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:31,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 04:37:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:31,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 04:37:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:31,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 04:37:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:31,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:37:31,307 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:37:31,307 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849410108] [2022-02-15 04:37:31,307 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1849410108] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:37:31,307 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:37:31,307 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 04:37:31,307 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600843427] [2022-02-15 04:37:31,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:37:31,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 04:37:31,308 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:37:31,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 04:37:31,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-15 04:37:31,308 INFO L87 Difference]: Start difference. First operand 7693 states and 11566 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 04:37:39,224 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:37:43,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:37:43,983 INFO L93 Difference]: Finished difference Result 8779 states and 13520 transitions. [2022-02-15 04:37:43,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 04:37:43,983 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 68 [2022-02-15 04:37:43,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:37:44,004 INFO L225 Difference]: With dead ends: 8779 [2022-02-15 04:37:44,004 INFO L226 Difference]: Without dead ends: 8763 [2022-02-15 04:37:44,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2022-02-15 04:37:44,008 INFO L933 BasicCegarLoop]: 717 mSDtfsCounter, 1815 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 5012 mSolverCounterSat, 834 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 5847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 834 IncrementalHoareTripleChecker+Valid, 5012 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-02-15 04:37:44,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1853 Valid, 1844 Invalid, 5847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [834 Valid, 5012 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2022-02-15 04:37:44,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8763 states. [2022-02-15 04:37:45,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8763 to 7699. [2022-02-15 04:37:45,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7699 states, 6102 states have (on average 1.4337921992789249) internal successors, (8749), 6291 states have internal predecessors, (8749), 1012 states have call successors, (1012), 479 states have call predecessors, (1012), 584 states have return successors, (1830), 964 states have call predecessors, (1830), 999 states have call successors, (1830) [2022-02-15 04:37:45,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7699 states to 7699 states and 11591 transitions. [2022-02-15 04:37:45,651 INFO L78 Accepts]: Start accepts. Automaton has 7699 states and 11591 transitions. Word has length 68 [2022-02-15 04:37:45,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:37:45,652 INFO L470 AbstractCegarLoop]: Abstraction has 7699 states and 11591 transitions. [2022-02-15 04:37:45,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 04:37:45,652 INFO L276 IsEmpty]: Start isEmpty. Operand 7699 states and 11591 transitions. [2022-02-15 04:37:45,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-15 04:37:45,653 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:37:45,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:37:45,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 04:37:45,654 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:37:45,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:37:45,654 INFO L85 PathProgramCache]: Analyzing trace with hash -175683046, now seen corresponding path program 1 times [2022-02-15 04:37:45,654 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:37:45,654 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395163437] [2022-02-15 04:37:45,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:37:45,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:37:45,665 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:37:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:45,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:37:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:45,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:37:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:45,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:37:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:45,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:37:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:46,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:37:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:46,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 04:37:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:46,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-15 04:37:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:46,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-15 04:37:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:37:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:37:46,150 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:37:46,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395163437] [2022-02-15 04:37:46,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1395163437] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:37:46,150 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:37:46,150 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 04:37:46,150 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269063100] [2022-02-15 04:37:46,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:37:46,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 04:37:46,151 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:37:46,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 04:37:46,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-02-15 04:37:46,151 INFO L87 Difference]: Start difference. First operand 7699 states and 11591 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 04:37:51,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:37:53,695 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:37:58,527 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:38:03,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:38:03,833 INFO L93 Difference]: Finished difference Result 8771 states and 13494 transitions. [2022-02-15 04:38:03,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 04:38:03,834 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 69 [2022-02-15 04:38:03,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:38:03,857 INFO L225 Difference]: With dead ends: 8771 [2022-02-15 04:38:03,858 INFO L226 Difference]: Without dead ends: 8751 [2022-02-15 04:38:03,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-02-15 04:38:03,862 INFO L933 BasicCegarLoop]: 729 mSDtfsCounter, 1754 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 4841 mSolverCounterSat, 770 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 5614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 770 IncrementalHoareTripleChecker+Valid, 4841 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-02-15 04:38:03,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1792 Valid, 1891 Invalid, 5614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [770 Valid, 4841 Invalid, 3 Unknown, 0 Unchecked, 14.7s Time] [2022-02-15 04:38:03,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8751 states. [2022-02-15 04:38:05,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8751 to 7697. [2022-02-15 04:38:05,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7697 states, 6101 states have (on average 1.4336993935420423) internal successors, (8747), 6290 states have internal predecessors, (8747), 1011 states have call successors, (1011), 479 states have call predecessors, (1011), 584 states have return successors, (1829), 963 states have call predecessors, (1829), 998 states have call successors, (1829) [2022-02-15 04:38:05,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7697 states to 7697 states and 11587 transitions. [2022-02-15 04:38:05,565 INFO L78 Accepts]: Start accepts. Automaton has 7697 states and 11587 transitions. Word has length 69 [2022-02-15 04:38:05,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:38:05,566 INFO L470 AbstractCegarLoop]: Abstraction has 7697 states and 11587 transitions. [2022-02-15 04:38:05,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 04:38:05,566 INFO L276 IsEmpty]: Start isEmpty. Operand 7697 states and 11587 transitions. [2022-02-15 04:38:05,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 04:38:05,567 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:38:05,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:38:05,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 04:38:05,568 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:38:05,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:38:05,568 INFO L85 PathProgramCache]: Analyzing trace with hash -2112328753, now seen corresponding path program 1 times [2022-02-15 04:38:05,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:38:05,568 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211126997] [2022-02-15 04:38:05,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:38:05,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:38:05,579 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:38:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:05,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:38:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:05,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:38:05,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:05,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:38:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:05,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:38:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:05,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:38:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:05,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 04:38:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:05,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-15 04:38:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:06,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-15 04:38:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:06,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:38:06,031 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:38:06,031 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211126997] [2022-02-15 04:38:06,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1211126997] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:38:06,031 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:38:06,031 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 04:38:06,031 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083106704] [2022-02-15 04:38:06,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:38:06,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 04:38:06,032 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:38:06,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 04:38:06,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-15 04:38:06,032 INFO L87 Difference]: Start difference. First operand 7697 states and 11587 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 04:38:11,574 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 [] [2022-02-15 04:38:17,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:38:22,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:38:22,687 INFO L93 Difference]: Finished difference Result 8766 states and 13487 transitions. [2022-02-15 04:38:22,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 04:38:22,688 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 71 [2022-02-15 04:38:22,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:38:22,715 INFO L225 Difference]: With dead ends: 8766 [2022-02-15 04:38:22,716 INFO L226 Difference]: Without dead ends: 8746 [2022-02-15 04:38:22,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-02-15 04:38:22,721 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 1664 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 5284 mSolverCounterSat, 713 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 5999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 5284 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-02-15 04:38:22,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1702 Valid, 1985 Invalid, 5999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [713 Valid, 5284 Invalid, 2 Unknown, 0 Unchecked, 13.5s Time] [2022-02-15 04:38:22,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8746 states. [2022-02-15 04:38:24,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8746 to 7692. [2022-02-15 04:38:24,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7692 states, 6098 states have (on average 1.4337487700885536) internal successors, (8743), 6287 states have internal predecessors, (8743), 1010 states have call successors, (1010), 479 states have call predecessors, (1010), 583 states have return successors, (1827), 961 states have call predecessors, (1827), 997 states have call successors, (1827) [2022-02-15 04:38:24,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7692 states to 7692 states and 11580 transitions. [2022-02-15 04:38:24,420 INFO L78 Accepts]: Start accepts. Automaton has 7692 states and 11580 transitions. Word has length 71 [2022-02-15 04:38:24,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:38:24,420 INFO L470 AbstractCegarLoop]: Abstraction has 7692 states and 11580 transitions. [2022-02-15 04:38:24,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 04:38:24,421 INFO L276 IsEmpty]: Start isEmpty. Operand 7692 states and 11580 transitions. [2022-02-15 04:38:24,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-15 04:38:24,422 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:38:24,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:38:24,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 04:38:24,422 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:38:24,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:38:24,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1256030660, now seen corresponding path program 1 times [2022-02-15 04:38:24,423 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:38:24,423 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549963040] [2022-02-15 04:38:24,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:38:24,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:38:24,433 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:38:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:24,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:38:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:24,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:38:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:24,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:38:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:24,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:38:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:24,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:38:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:24,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 04:38:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:24,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 04:38:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:24,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 04:38:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:38:24,997 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:38:24,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549963040] [2022-02-15 04:38:24,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1549963040] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:38:24,998 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:38:24,998 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 04:38:24,998 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279376153] [2022-02-15 04:38:24,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:38:24,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 04:38:24,998 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:38:24,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 04:38:24,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-02-15 04:38:24,999 INFO L87 Difference]: Start difference. First operand 7692 states and 11580 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-15 04:38:34,262 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:38:45,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:38:45,722 INFO L93 Difference]: Finished difference Result 14674 states and 22627 transitions. [2022-02-15 04:38:45,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 04:38:45,723 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 72 [2022-02-15 04:38:45,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:38:45,753 INFO L225 Difference]: With dead ends: 14674 [2022-02-15 04:38:45,753 INFO L226 Difference]: Without dead ends: 10336 [2022-02-15 04:38:45,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=533, Invalid=2223, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 04:38:45,769 INFO L933 BasicCegarLoop]: 1092 mSDtfsCounter, 3768 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 7319 mSolverCounterSat, 2057 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3776 SdHoareTripleChecker+Valid, 2359 SdHoareTripleChecker+Invalid, 9377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2057 IncrementalHoareTripleChecker+Valid, 7319 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-02-15 04:38:45,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3776 Valid, 2359 Invalid, 9377 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2057 Valid, 7319 Invalid, 1 Unknown, 0 Unchecked, 15.4s Time] [2022-02-15 04:38:45,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10336 states. [2022-02-15 04:38:47,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10336 to 8302. [2022-02-15 04:38:47,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8302 states, 6587 states have (on average 1.432974039775315) internal successors, (9439), 6782 states have internal predecessors, (9439), 1077 states have call successors, (1077), 521 states have call predecessors, (1077), 637 states have return successors, (1969), 1033 states have call predecessors, (1969), 1063 states have call successors, (1969) [2022-02-15 04:38:47,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8302 states to 8302 states and 12485 transitions. [2022-02-15 04:38:47,797 INFO L78 Accepts]: Start accepts. Automaton has 8302 states and 12485 transitions. Word has length 72 [2022-02-15 04:38:47,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:38:47,797 INFO L470 AbstractCegarLoop]: Abstraction has 8302 states and 12485 transitions. [2022-02-15 04:38:47,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-15 04:38:47,797 INFO L276 IsEmpty]: Start isEmpty. Operand 8302 states and 12485 transitions. [2022-02-15 04:38:47,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-15 04:38:47,799 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:38:47,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:38:47,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 04:38:47,799 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:38:47,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:38:47,799 INFO L85 PathProgramCache]: Analyzing trace with hash -26354390, now seen corresponding path program 1 times [2022-02-15 04:38:47,799 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:38:47,799 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050030094] [2022-02-15 04:38:47,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:38:47,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:38:47,810 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:38:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:48,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:38:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:48,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:38:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:48,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:38:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:48,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:38:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:48,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:38:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:48,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 04:38:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:48,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 04:38:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:48,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-15 04:38:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:38:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:38:48,333 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:38:48,333 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050030094] [2022-02-15 04:38:48,333 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2050030094] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:38:48,333 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:38:48,333 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 04:38:48,333 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245313508] [2022-02-15 04:38:48,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:38:48,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 04:38:48,334 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:38:48,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 04:38:48,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-15 04:38:48,334 INFO L87 Difference]: Start difference. First operand 8302 states and 12485 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 04:38:54,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:38:58,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:39:04,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:39:04,256 INFO L93 Difference]: Finished difference Result 16816 states and 25928 transitions. [2022-02-15 04:39:04,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 04:39:04,257 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 73 [2022-02-15 04:39:04,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:39:04,290 INFO L225 Difference]: With dead ends: 16816 [2022-02-15 04:39:04,290 INFO L226 Difference]: Without dead ends: 9706 [2022-02-15 04:39:04,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-02-15 04:39:04,316 INFO L933 BasicCegarLoop]: 680 mSDtfsCounter, 1963 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 4239 mSolverCounterSat, 890 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1998 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 5131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 890 IncrementalHoareTripleChecker+Valid, 4239 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-02-15 04:39:04,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1998 Valid, 1614 Invalid, 5131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [890 Valid, 4239 Invalid, 2 Unknown, 0 Unchecked, 11.8s Time] [2022-02-15 04:39:04,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9706 states. [2022-02-15 04:39:06,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9706 to 8382. [2022-02-15 04:39:06,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8382 states, 6645 states have (on average 1.4291948833709556) internal successors, (9497), 6850 states have internal predecessors, (9497), 1077 states have call successors, (1077), 521 states have call predecessors, (1077), 659 states have return successors, (2036), 1045 states have call predecessors, (2036), 1063 states have call successors, (2036) [2022-02-15 04:39:06,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8382 states to 8382 states and 12610 transitions. [2022-02-15 04:39:06,478 INFO L78 Accepts]: Start accepts. Automaton has 8382 states and 12610 transitions. Word has length 73 [2022-02-15 04:39:06,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:39:06,478 INFO L470 AbstractCegarLoop]: Abstraction has 8382 states and 12610 transitions. [2022-02-15 04:39:06,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 04:39:06,478 INFO L276 IsEmpty]: Start isEmpty. Operand 8382 states and 12610 transitions. [2022-02-15 04:39:06,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-15 04:39:06,480 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:39:06,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:39:06,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 04:39:06,480 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:39:06,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:39:06,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1359799553, now seen corresponding path program 1 times [2022-02-15 04:39:06,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:39:06,480 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654781888] [2022-02-15 04:39:06,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:39:06,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:39:06,492 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:39:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:06,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:39:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:06,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:39:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:06,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:39:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:06,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:39:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:06,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:39:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:06,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 04:39:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:06,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 04:39:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:06,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 04:39:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:39:06,998 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:39:06,998 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654781888] [2022-02-15 04:39:06,998 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [654781888] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:39:06,998 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:39:06,998 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 04:39:06,998 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112092984] [2022-02-15 04:39:06,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:39:06,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 04:39:06,999 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:39:06,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 04:39:06,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-15 04:39:06,999 INFO L87 Difference]: Start difference. First operand 8382 states and 12610 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:39:13,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:39:15,262 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:39:17,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:39:23,648 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:39:29,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:39:29,730 INFO L93 Difference]: Finished difference Result 17748 states and 27361 transitions. [2022-02-15 04:39:29,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 04:39:29,731 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2022-02-15 04:39:29,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:39:29,761 INFO L225 Difference]: With dead ends: 17748 [2022-02-15 04:39:29,761 INFO L226 Difference]: Without dead ends: 9620 [2022-02-15 04:39:29,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=234, Invalid=636, Unknown=0, NotChecked=0, Total=870 [2022-02-15 04:39:29,787 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 2907 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 3884 mSolverCounterSat, 1205 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2957 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 5093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1205 IncrementalHoareTripleChecker+Valid, 3884 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:39:29,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2957 Valid, 1486 Invalid, 5093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1205 Valid, 3884 Invalid, 4 Unknown, 0 Unchecked, 18.0s Time] [2022-02-15 04:39:29,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9620 states. [2022-02-15 04:39:31,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9620 to 8401. [2022-02-15 04:39:31,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8401 states, 6664 states have (on average 1.4294717887154862) internal successors, (9526), 6869 states have internal predecessors, (9526), 1077 states have call successors, (1077), 521 states have call predecessors, (1077), 659 states have return successors, (2036), 1045 states have call predecessors, (2036), 1063 states have call successors, (2036) [2022-02-15 04:39:32,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8401 states to 8401 states and 12639 transitions. [2022-02-15 04:39:32,005 INFO L78 Accepts]: Start accepts. Automaton has 8401 states and 12639 transitions. Word has length 74 [2022-02-15 04:39:32,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:39:32,005 INFO L470 AbstractCegarLoop]: Abstraction has 8401 states and 12639 transitions. [2022-02-15 04:39:32,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:39:32,006 INFO L276 IsEmpty]: Start isEmpty. Operand 8401 states and 12639 transitions. [2022-02-15 04:39:32,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-15 04:39:32,007 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:39:32,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:39:32,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 04:39:32,007 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:39:32,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:39:32,008 INFO L85 PathProgramCache]: Analyzing trace with hash 941023037, now seen corresponding path program 1 times [2022-02-15 04:39:32,008 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:39:32,008 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50625798] [2022-02-15 04:39:32,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:39:32,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:39:32,019 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:39:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:32,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:39:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:32,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:39:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:32,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:39:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:32,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:39:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:32,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:39:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:32,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 04:39:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:32,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 04:39:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:32,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 04:39:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:32,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:39:32,584 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:39:32,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50625798] [2022-02-15 04:39:32,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [50625798] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:39:32,584 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:39:32,584 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 04:39:32,584 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720389738] [2022-02-15 04:39:32,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:39:32,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 04:39:32,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:39:32,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 04:39:32,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-02-15 04:39:32,585 INFO L87 Difference]: Start difference. First operand 8401 states and 12639 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-15 04:39:39,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:39:41,563 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:39:48,845 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:39:55,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:39:55,622 INFO L93 Difference]: Finished difference Result 13783 states and 21001 transitions. [2022-02-15 04:39:55,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 04:39:55,622 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2022-02-15 04:39:55,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:39:55,646 INFO L225 Difference]: With dead ends: 13783 [2022-02-15 04:39:55,646 INFO L226 Difference]: Without dead ends: 9394 [2022-02-15 04:39:55,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=388, Invalid=1504, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 04:39:55,662 INFO L933 BasicCegarLoop]: 675 mSDtfsCounter, 2521 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 5395 mSolverCounterSat, 1062 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2552 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 6460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1062 IncrementalHoareTripleChecker+Valid, 5395 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2022-02-15 04:39:55,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2552 Valid, 1747 Invalid, 6460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1062 Valid, 5395 Invalid, 3 Unknown, 0 Unchecked, 17.7s Time] [2022-02-15 04:39:55,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9394 states. [2022-02-15 04:39:57,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9394 to 7603. [2022-02-15 04:39:57,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7603 states, 6032 states have (on average 1.4278846153846154) internal successors, (8613), 6225 states have internal predecessors, (8613), 974 states have call successors, (974), 475 states have call predecessors, (974), 596 states have return successors, (1663), 937 states have call predecessors, (1663), 960 states have call successors, (1663) [2022-02-15 04:39:57,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7603 states to 7603 states and 11250 transitions. [2022-02-15 04:39:57,753 INFO L78 Accepts]: Start accepts. Automaton has 7603 states and 11250 transitions. Word has length 74 [2022-02-15 04:39:57,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:39:57,754 INFO L470 AbstractCegarLoop]: Abstraction has 7603 states and 11250 transitions. [2022-02-15 04:39:57,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-15 04:39:57,754 INFO L276 IsEmpty]: Start isEmpty. Operand 7603 states and 11250 transitions. [2022-02-15 04:39:57,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-15 04:39:57,755 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:39:57,755 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:39:57,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 04:39:57,755 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:39:57,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:39:57,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1087715839, now seen corresponding path program 1 times [2022-02-15 04:39:57,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:39:57,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309076489] [2022-02-15 04:39:57,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:39:57,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:39:57,809 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:39:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:58,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:39:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:58,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:39:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:58,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:39:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:58,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:39:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:58,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:39:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:58,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 04:39:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:58,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 04:39:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:58,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 04:39:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:39:58,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:39:58,253 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:39:58,253 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309076489] [2022-02-15 04:39:58,253 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1309076489] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:39:58,253 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:39:58,253 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 04:39:58,253 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863425479] [2022-02-15 04:39:58,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:39:58,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 04:39:58,253 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:39:58,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 04:39:58,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-15 04:39:58,254 INFO L87 Difference]: Start difference. First operand 7603 states and 11250 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 04:40:03,755 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:40:05,880 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:40:11,481 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:40:24,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:40:24,403 INFO L93 Difference]: Finished difference Result 11778 states and 17904 transitions. [2022-02-15 04:40:24,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 04:40:24,405 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 74 [2022-02-15 04:40:24,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:40:24,432 INFO L225 Difference]: With dead ends: 11778 [2022-02-15 04:40:24,432 INFO L226 Difference]: Without dead ends: 11765 [2022-02-15 04:40:24,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=242, Invalid=688, Unknown=0, NotChecked=0, Total=930 [2022-02-15 04:40:24,437 INFO L933 BasicCegarLoop]: 1161 mSDtfsCounter, 2754 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 5964 mSolverCounterSat, 1247 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2801 SdHoareTripleChecker+Valid, 2233 SdHoareTripleChecker+Invalid, 7214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1247 IncrementalHoareTripleChecker+Valid, 5964 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2022-02-15 04:40:24,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2801 Valid, 2233 Invalid, 7214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1247 Valid, 5964 Invalid, 3 Unknown, 0 Unchecked, 20.5s Time] [2022-02-15 04:40:24,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11765 states. [2022-02-15 04:40:26,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11765 to 8234. [2022-02-15 04:40:26,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8234 states, 6544 states have (on average 1.4306234718826405) internal successors, (9362), 6738 states have internal predecessors, (9362), 1043 states have call successors, (1043), 516 states have call predecessors, (1043), 646 states have return successors, (1777), 1015 states have call predecessors, (1777), 1029 states have call successors, (1777) [2022-02-15 04:40:26,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8234 states to 8234 states and 12182 transitions. [2022-02-15 04:40:26,966 INFO L78 Accepts]: Start accepts. Automaton has 8234 states and 12182 transitions. Word has length 74 [2022-02-15 04:40:26,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:40:26,966 INFO L470 AbstractCegarLoop]: Abstraction has 8234 states and 12182 transitions. [2022-02-15 04:40:26,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-15 04:40:26,966 INFO L276 IsEmpty]: Start isEmpty. Operand 8234 states and 12182 transitions. [2022-02-15 04:40:26,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-15 04:40:26,967 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:40:26,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:40:26,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-15 04:40:26,968 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:40:26,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:40:26,968 INFO L85 PathProgramCache]: Analyzing trace with hash -189949733, now seen corresponding path program 1 times [2022-02-15 04:40:26,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:40:26,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757827931] [2022-02-15 04:40:26,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:40:26,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:40:26,979 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:40:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:40:27,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:40:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:40:27,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:40:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:40:27,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:40:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:40:27,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:40:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:40:27,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:40:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:40:27,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 04:40:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:40:27,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 04:40:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:40:27,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 04:40:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:40:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:40:27,486 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:40:27,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757827931] [2022-02-15 04:40:27,486 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [757827931] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:40:27,486 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:40:27,486 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 04:40:27,486 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882302451] [2022-02-15 04:40:27,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:40:27,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 04:40:27,487 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:40:27,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 04:40:27,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-15 04:40:27,487 INFO L87 Difference]: Start difference. First operand 8234 states and 12182 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:40:37,244 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:40:42,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:40:51,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:40:51,678 INFO L93 Difference]: Finished difference Result 10371 states and 15718 transitions. [2022-02-15 04:40:51,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 04:40:51,678 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-02-15 04:40:51,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:40:51,702 INFO L225 Difference]: With dead ends: 10371 [2022-02-15 04:40:51,702 INFO L226 Difference]: Without dead ends: 10367 [2022-02-15 04:40:51,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=542, Invalid=1810, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 04:40:51,706 INFO L933 BasicCegarLoop]: 1094 mSDtfsCounter, 4173 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 5897 mSolverCounterSat, 2000 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4215 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 7899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2000 IncrementalHoareTripleChecker+Valid, 5897 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2022-02-15 04:40:51,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4215 Valid, 2125 Invalid, 7899 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2000 Valid, 5897 Invalid, 2 Unknown, 0 Unchecked, 16.9s Time] [2022-02-15 04:40:51,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10367 states. [2022-02-15 04:40:54,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10367 to 8236. [2022-02-15 04:40:54,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8236 states, 6546 states have (on average 1.43049190345249) internal successors, (9364), 6740 states have internal predecessors, (9364), 1043 states have call successors, (1043), 516 states have call predecessors, (1043), 646 states have return successors, (1777), 1015 states have call predecessors, (1777), 1029 states have call successors, (1777) [2022-02-15 04:40:54,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8236 states to 8236 states and 12184 transitions. [2022-02-15 04:40:54,345 INFO L78 Accepts]: Start accepts. Automaton has 8236 states and 12184 transitions. Word has length 75 [2022-02-15 04:40:54,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:40:54,346 INFO L470 AbstractCegarLoop]: Abstraction has 8236 states and 12184 transitions. [2022-02-15 04:40:54,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:40:54,346 INFO L276 IsEmpty]: Start isEmpty. Operand 8236 states and 12184 transitions. [2022-02-15 04:40:54,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-15 04:40:54,347 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:40:54,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:40:54,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-15 04:40:54,347 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:40:54,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:40:54,348 INFO L85 PathProgramCache]: Analyzing trace with hash -189672903, now seen corresponding path program 1 times [2022-02-15 04:40:54,348 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:40:54,348 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146318026] [2022-02-15 04:40:54,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:40:54,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:40:54,359 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:40:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:40:54,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:40:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:40:54,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:40:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:40:54,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 04:40:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:40:54,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:40:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:40:54,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:40:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:40:54,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 04:40:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:40:55,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 04:40:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:40:55,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 04:40:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:40:55,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:40:55,061 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:40:55,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146318026] [2022-02-15 04:40:55,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [146318026] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:40:55,061 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:40:55,061 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 04:40:55,061 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576085880] [2022-02-15 04:40:55,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:40:55,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 04:40:55,061 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:40:55,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 04:40:55,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-15 04:40:55,062 INFO L87 Difference]: Start difference. First operand 8236 states and 12184 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:41:03,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:41:09,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:41:09,832 INFO L93 Difference]: Finished difference Result 17461 states and 26355 transitions. [2022-02-15 04:41:09,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 04:41:09,832 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-02-15 04:41:09,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:41:09,859 INFO L225 Difference]: With dead ends: 17461 [2022-02-15 04:41:09,860 INFO L226 Difference]: Without dead ends: 9190 [2022-02-15 04:41:09,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2022-02-15 04:41:09,882 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 2231 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 3349 mSolverCounterSat, 1001 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2267 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 4351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1001 IncrementalHoareTripleChecker+Valid, 3349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-02-15 04:41:09,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2267 Valid, 1610 Invalid, 4351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1001 Valid, 3349 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2022-02-15 04:41:09,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9190 states. [2022-02-15 04:41:12,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9190 to 8259. [2022-02-15 04:41:12,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8259 states, 6569 states have (on average 1.4289846247526259) internal successors, (9387), 6763 states have internal predecessors, (9387), 1043 states have call successors, (1043), 516 states have call predecessors, (1043), 646 states have return successors, (1777), 1015 states have call predecessors, (1777), 1029 states have call successors, (1777) [2022-02-15 04:41:12,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8259 states to 8259 states and 12207 transitions. [2022-02-15 04:41:12,616 INFO L78 Accepts]: Start accepts. Automaton has 8259 states and 12207 transitions. Word has length 75 [2022-02-15 04:41:12,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:41:12,616 INFO L470 AbstractCegarLoop]: Abstraction has 8259 states and 12207 transitions. [2022-02-15 04:41:12,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:41:12,616 INFO L276 IsEmpty]: Start isEmpty. Operand 8259 states and 12207 transitions. [2022-02-15 04:41:12,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-15 04:41:12,617 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:41:12,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:41:12,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-15 04:41:12,618 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:41:12,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:41:12,618 INFO L85 PathProgramCache]: Analyzing trace with hash -593466891, now seen corresponding path program 1 times [2022-02-15 04:41:12,618 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:41:12,618 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560356582] [2022-02-15 04:41:12,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:41:12,627 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 04:41:12,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:41:12,639 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:41:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:41:12,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:41:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:41:12,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:41:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:41:13,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-15 04:41:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:41:13,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-15 04:41:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:41:13,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:41:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:41:13,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-15 04:41:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:41:13,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-15 04:41:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:41:13,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 04:41:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:41:13,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:41:13,312 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:41:13,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560356582] [2022-02-15 04:41:13,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1560356582] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:41:13,312 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:41:13,312 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 04:41:13,312 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994594626] [2022-02-15 04:41:13,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:41:13,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 04:41:13,313 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:41:13,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 04:41:13,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-15 04:41:13,313 INFO L87 Difference]: Start difference. First operand 8259 states and 12207 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:41:19,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:41:25,405 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:41:32,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:41:32,582 INFO L93 Difference]: Finished difference Result 17506 states and 26400 transitions. [2022-02-15 04:41:32,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 04:41:32,583 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2022-02-15 04:41:32,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:41:32,609 INFO L225 Difference]: With dead ends: 17506 [2022-02-15 04:41:32,609 INFO L226 Difference]: Without dead ends: 9213 [2022-02-15 04:41:32,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2022-02-15 04:41:32,632 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1810 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 4405 mSolverCounterSat, 800 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1846 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 5207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 800 IncrementalHoareTripleChecker+Valid, 4405 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-02-15 04:41:32,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1846 Valid, 1720 Invalid, 5207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [800 Valid, 4405 Invalid, 2 Unknown, 0 Unchecked, 14.1s Time] [2022-02-15 04:41:32,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9213 states. [2022-02-15 04:41:35,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9213 to 8282. [2022-02-15 04:41:35,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8282 states, 6592 states have (on average 1.4274878640776698) internal successors, (9410), 6786 states have internal predecessors, (9410), 1043 states have call successors, (1043), 516 states have call predecessors, (1043), 646 states have return successors, (1777), 1015 states have call predecessors, (1777), 1029 states have call successors, (1777) [2022-02-15 04:41:35,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8282 states to 8282 states and 12230 transitions. [2022-02-15 04:41:35,441 INFO L78 Accepts]: Start accepts. Automaton has 8282 states and 12230 transitions. Word has length 76 [2022-02-15 04:41:35,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:41:35,441 INFO L470 AbstractCegarLoop]: Abstraction has 8282 states and 12230 transitions. [2022-02-15 04:41:35,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:41:35,441 INFO L276 IsEmpty]: Start isEmpty. Operand 8282 states and 12230 transitions. [2022-02-15 04:41:35,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-15 04:41:35,442 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:41:35,442 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:41:35,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-15 04:41:35,442 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:41:35,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:41:35,443 INFO L85 PathProgramCache]: Analyzing trace with hash -226178631, now seen corresponding path program 2 times [2022-02-15 04:41:35,443 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:41:35,443 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578241534] [2022-02-15 04:41:35,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:41:35,444 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 04:41:35,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:41:35,455 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:41:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:41:35,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:41:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:41:35,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:41:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:41:36,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-02-15 04:41:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:41:36,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 04:41:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:41:36,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:41:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:41:36,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-15 04:41:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:41:36,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-15 04:41:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:41:36,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 04:41:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:41:36,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:41:36,331 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:41:36,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578241534] [2022-02-15 04:41:36,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [578241534] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:41:36,332 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:41:36,332 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 04:41:36,332 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338794644] [2022-02-15 04:41:36,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:41:36,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 04:41:36,332 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:41:36,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 04:41:36,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-02-15 04:41:36,338 INFO L87 Difference]: Start difference. First operand 8282 states and 12230 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:41:43,140 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:41:49,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:41:57,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:41:57,311 INFO L93 Difference]: Finished difference Result 17551 states and 26445 transitions. [2022-02-15 04:41:57,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 04:41:57,311 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2022-02-15 04:41:57,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:41:57,339 INFO L225 Difference]: With dead ends: 17551 [2022-02-15 04:41:57,340 INFO L226 Difference]: Without dead ends: 9236 [2022-02-15 04:41:57,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2022-02-15 04:41:57,402 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1750 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 5305 mSolverCounterSat, 740 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1786 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 6047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 740 IncrementalHoareTripleChecker+Valid, 5305 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-02-15 04:41:57,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1786 Valid, 1897 Invalid, 6047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [740 Valid, 5305 Invalid, 2 Unknown, 0 Unchecked, 15.7s Time] [2022-02-15 04:41:57,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9236 states. [2022-02-15 04:42:00,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9236 to 8305. [2022-02-15 04:42:00,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8305 states, 6615 states have (on average 1.4260015117157974) internal successors, (9433), 6809 states have internal predecessors, (9433), 1043 states have call successors, (1043), 516 states have call predecessors, (1043), 646 states have return successors, (1777), 1015 states have call predecessors, (1777), 1029 states have call successors, (1777) [2022-02-15 04:42:00,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8305 states to 8305 states and 12253 transitions. [2022-02-15 04:42:00,261 INFO L78 Accepts]: Start accepts. Automaton has 8305 states and 12253 transitions. Word has length 77 [2022-02-15 04:42:00,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:42:00,261 INFO L470 AbstractCegarLoop]: Abstraction has 8305 states and 12253 transitions. [2022-02-15 04:42:00,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:42:00,261 INFO L276 IsEmpty]: Start isEmpty. Operand 8305 states and 12253 transitions. [2022-02-15 04:42:00,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 04:42:00,263 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:42:00,263 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:42:00,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-15 04:42:00,263 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:42:00,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:42:00,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1725144459, now seen corresponding path program 3 times [2022-02-15 04:42:00,263 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:42:00,263 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478911984] [2022-02-15 04:42:00,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:42:00,264 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 04:42:00,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:42:00,277 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:42:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:00,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:42:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:00,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:42:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:00,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 04:42:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:00,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-15 04:42:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:00,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:42:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:00,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 04:42:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:00,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-15 04:42:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:00,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 04:42:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:42:00,963 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:42:00,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478911984] [2022-02-15 04:42:00,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1478911984] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:42:00,963 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:42:00,963 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 04:42:00,963 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780013066] [2022-02-15 04:42:00,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:42:00,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 04:42:00,964 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:42:00,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 04:42:00,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-02-15 04:42:00,964 INFO L87 Difference]: Start difference. First operand 8305 states and 12253 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:42:08,108 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:42:10,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:42:15,612 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:42:23,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:42:23,145 INFO L93 Difference]: Finished difference Result 17596 states and 26490 transitions. [2022-02-15 04:42:23,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 04:42:23,145 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2022-02-15 04:42:23,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:42:23,171 INFO L225 Difference]: With dead ends: 17596 [2022-02-15 04:42:23,172 INFO L226 Difference]: Without dead ends: 9259 [2022-02-15 04:42:23,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2022-02-15 04:42:23,192 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 2473 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 5572 mSolverCounterSat, 1082 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2509 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 6657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1082 IncrementalHoareTripleChecker+Valid, 5572 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2022-02-15 04:42:23,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2509 Valid, 2064 Invalid, 6657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1082 Valid, 5572 Invalid, 3 Unknown, 0 Unchecked, 16.7s Time] [2022-02-15 04:42:23,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9259 states. [2022-02-15 04:42:26,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9259 to 8328. [2022-02-15 04:42:26,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8328 states, 6638 states have (on average 1.4245254594757457) internal successors, (9456), 6832 states have internal predecessors, (9456), 1043 states have call successors, (1043), 516 states have call predecessors, (1043), 646 states have return successors, (1777), 1015 states have call predecessors, (1777), 1029 states have call successors, (1777) [2022-02-15 04:42:26,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8328 states to 8328 states and 12276 transitions. [2022-02-15 04:42:26,113 INFO L78 Accepts]: Start accepts. Automaton has 8328 states and 12276 transitions. Word has length 78 [2022-02-15 04:42:26,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:42:26,114 INFO L470 AbstractCegarLoop]: Abstraction has 8328 states and 12276 transitions. [2022-02-15 04:42:26,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:42:26,114 INFO L276 IsEmpty]: Start isEmpty. Operand 8328 states and 12276 transitions. [2022-02-15 04:42:26,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-15 04:42:26,115 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:42:26,115 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:42:26,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-15 04:42:26,116 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:42:26,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:42:26,116 INFO L85 PathProgramCache]: Analyzing trace with hash -948444871, now seen corresponding path program 4 times [2022-02-15 04:42:26,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:42:26,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201588351] [2022-02-15 04:42:26,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:42:26,117 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 04:42:26,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:42:26,131 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:42:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:26,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:42:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:26,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:42:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:26,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 04:42:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:26,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-15 04:42:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:26,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:42:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:26,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-15 04:42:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:26,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-02-15 04:42:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:27,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 04:42:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:27,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:42:27,036 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:42:27,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201588351] [2022-02-15 04:42:27,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [201588351] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:42:27,037 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:42:27,037 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 04:42:27,037 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64206992] [2022-02-15 04:42:27,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:42:27,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 04:42:27,037 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:42:27,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 04:42:27,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-02-15 04:42:27,038 INFO L87 Difference]: Start difference. First operand 8328 states and 12276 transitions. Second operand has 16 states, 16 states have (on average 3.8125) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:42:38,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:42:46,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:42:46,704 INFO L93 Difference]: Finished difference Result 17641 states and 26535 transitions. [2022-02-15 04:42:46,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 04:42:46,706 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 79 [2022-02-15 04:42:46,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:42:46,737 INFO L225 Difference]: With dead ends: 17641 [2022-02-15 04:42:46,738 INFO L226 Difference]: Without dead ends: 9282 [2022-02-15 04:42:46,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=186, Invalid=684, Unknown=0, NotChecked=0, Total=870 [2022-02-15 04:42:46,763 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 2254 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 5715 mSolverCounterSat, 1006 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2290 SdHoareTripleChecker+Valid, 2065 SdHoareTripleChecker+Invalid, 6722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1006 IncrementalHoareTripleChecker+Valid, 5715 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-02-15 04:42:46,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2290 Valid, 2065 Invalid, 6722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1006 Valid, 5715 Invalid, 1 Unknown, 0 Unchecked, 13.8s Time] [2022-02-15 04:42:46,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9282 states. [2022-02-15 04:42:49,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9282 to 8351. [2022-02-15 04:42:49,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8351 states, 6661 states have (on average 1.4230596006605616) internal successors, (9479), 6855 states have internal predecessors, (9479), 1043 states have call successors, (1043), 516 states have call predecessors, (1043), 646 states have return successors, (1777), 1015 states have call predecessors, (1777), 1029 states have call successors, (1777) [2022-02-15 04:42:49,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8351 states to 8351 states and 12299 transitions. [2022-02-15 04:42:49,859 INFO L78 Accepts]: Start accepts. Automaton has 8351 states and 12299 transitions. Word has length 79 [2022-02-15 04:42:49,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:42:49,860 INFO L470 AbstractCegarLoop]: Abstraction has 8351 states and 12299 transitions. [2022-02-15 04:42:49,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:42:49,860 INFO L276 IsEmpty]: Start isEmpty. Operand 8351 states and 12299 transitions. [2022-02-15 04:42:49,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-15 04:42:49,861 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:42:49,861 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:42:49,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-15 04:42:49,861 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:42:49,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:42:49,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1654405877, now seen corresponding path program 5 times [2022-02-15 04:42:49,862 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:42:49,862 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487067938] [2022-02-15 04:42:49,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:42:49,862 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 04:42:49,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:42:49,876 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:42:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:50,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:42:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:50,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:42:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:50,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-15 04:42:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:50,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-15 04:42:50,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:50,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:42:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:50,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-02-15 04:42:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:50,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-15 04:42:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:50,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 04:42:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:42:50,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:42:50,750 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:42:50,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487067938] [2022-02-15 04:42:50,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1487067938] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:42:50,750 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:42:50,750 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 04:42:50,750 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804851802] [2022-02-15 04:42:50,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:42:50,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 04:42:50,751 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:42:50,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 04:42:50,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-02-15 04:42:50,751 INFO L87 Difference]: Start difference. First operand 8351 states and 12299 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 9 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:43:06,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:43:16,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:43:16,496 INFO L93 Difference]: Finished difference Result 17686 states and 26580 transitions. [2022-02-15 04:43:16,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 04:43:16,497 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 9 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2022-02-15 04:43:16,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:43:16,529 INFO L225 Difference]: With dead ends: 17686 [2022-02-15 04:43:16,529 INFO L226 Difference]: Without dead ends: 9305 [2022-02-15 04:43:16,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2022-02-15 04:43:16,555 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1750 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 7623 mSolverCounterSat, 751 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1786 SdHoareTripleChecker+Valid, 2447 SdHoareTripleChecker+Invalid, 8375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 751 IncrementalHoareTripleChecker+Valid, 7623 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2022-02-15 04:43:16,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1786 Valid, 2447 Invalid, 8375 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [751 Valid, 7623 Invalid, 1 Unknown, 0 Unchecked, 19.7s Time] [2022-02-15 04:43:16,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9305 states. [2022-02-15 04:43:19,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9305 to 8374. [2022-02-15 04:43:19,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8374 states, 6684 states have (on average 1.4216038300418912) internal successors, (9502), 6878 states have internal predecessors, (9502), 1043 states have call successors, (1043), 516 states have call predecessors, (1043), 646 states have return successors, (1777), 1015 states have call predecessors, (1777), 1029 states have call successors, (1777) [2022-02-15 04:43:19,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8374 states to 8374 states and 12322 transitions. [2022-02-15 04:43:19,704 INFO L78 Accepts]: Start accepts. Automaton has 8374 states and 12322 transitions. Word has length 80 [2022-02-15 04:43:19,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:43:19,705 INFO L470 AbstractCegarLoop]: Abstraction has 8374 states and 12322 transitions. [2022-02-15 04:43:19,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 9 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:43:19,705 INFO L276 IsEmpty]: Start isEmpty. Operand 8374 states and 12322 transitions. [2022-02-15 04:43:19,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-15 04:43:19,706 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:43:19,706 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:43:19,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-15 04:43:19,707 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:43:19,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:43:19,707 INFO L85 PathProgramCache]: Analyzing trace with hash 738400441, now seen corresponding path program 6 times [2022-02-15 04:43:19,707 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:43:19,707 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219652657] [2022-02-15 04:43:19,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:43:19,708 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 04:43:19,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:43:19,722 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:43:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:43:20,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:43:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:43:20,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:43:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:43:20,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 04:43:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:43:20,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-15 04:43:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:43:20,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:43:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:43:20,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 04:43:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:43:20,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 04:43:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:43:20,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 04:43:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:43:20,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:43:20,912 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:43:20,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219652657] [2022-02-15 04:43:20,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [219652657] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:43:20,912 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:43:20,912 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-15 04:43:20,912 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702118837] [2022-02-15 04:43:20,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:43:20,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 04:43:20,913 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:43:20,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 04:43:20,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-02-15 04:43:20,913 INFO L87 Difference]: Start difference. First operand 8374 states and 12322 transitions. Second operand has 18 states, 18 states have (on average 3.5) internal successors, (63), 10 states have internal predecessors, (63), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:43:34,644 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:43:44,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:43:44,043 INFO L93 Difference]: Finished difference Result 17731 states and 26625 transitions. [2022-02-15 04:43:44,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 04:43:44,044 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 10 states have internal predecessors, (63), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 81 [2022-02-15 04:43:44,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:43:44,077 INFO L225 Difference]: With dead ends: 17731 [2022-02-15 04:43:44,077 INFO L226 Difference]: Without dead ends: 9328 [2022-02-15 04:43:44,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=214, Invalid=908, Unknown=0, NotChecked=0, Total=1122 [2022-02-15 04:43:44,102 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 2003 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 6153 mSolverCounterSat, 939 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2039 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 7093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 939 IncrementalHoareTripleChecker+Valid, 6153 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-02-15 04:43:44,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2039 Valid, 2179 Invalid, 7093 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [939 Valid, 6153 Invalid, 1 Unknown, 0 Unchecked, 16.8s Time] [2022-02-15 04:43:44,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9328 states. [2022-02-15 04:43:47,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9328 to 8397. [2022-02-15 04:43:47,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8397 states, 6707 states have (on average 1.4201580438347994) internal successors, (9525), 6901 states have internal predecessors, (9525), 1043 states have call successors, (1043), 516 states have call predecessors, (1043), 646 states have return successors, (1777), 1015 states have call predecessors, (1777), 1029 states have call successors, (1777) [2022-02-15 04:43:47,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8397 states to 8397 states and 12345 transitions. [2022-02-15 04:43:47,366 INFO L78 Accepts]: Start accepts. Automaton has 8397 states and 12345 transitions. Word has length 81 [2022-02-15 04:43:47,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:43:47,366 INFO L470 AbstractCegarLoop]: Abstraction has 8397 states and 12345 transitions. [2022-02-15 04:43:47,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 10 states have internal predecessors, (63), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:43:47,366 INFO L276 IsEmpty]: Start isEmpty. Operand 8397 states and 12345 transitions. [2022-02-15 04:43:47,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-02-15 04:43:47,368 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:43:47,368 INFO L514 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:43:47,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-15 04:43:47,368 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:43:47,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:43:47,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1887964299, now seen corresponding path program 7 times [2022-02-15 04:43:47,368 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:43:47,368 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696412996] [2022-02-15 04:43:47,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:43:47,369 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 04:43:47,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:43:47,383 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:43:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:43:47,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:43:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:43:47,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:43:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:43:48,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-15 04:43:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:43:48,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 04:43:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:43:48,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:43:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:43:48,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-02-15 04:43:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:43:48,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-02-15 04:43:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:43:48,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 04:43:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:43:48,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:43:48,575 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:43:48,575 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696412996] [2022-02-15 04:43:48,576 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1696412996] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:43:48,576 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:43:48,576 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 04:43:48,576 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461839185] [2022-02-15 04:43:48,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:43:48,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 04:43:48,576 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:43:48,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 04:43:48,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-02-15 04:43:48,577 INFO L87 Difference]: Start difference. First operand 8397 states and 12345 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 11 states have internal predecessors, (64), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:43:57,493 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:43:59,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:44:01,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:44:03,863 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:44:05,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:44:13,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:44:24,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:44:24,003 INFO L93 Difference]: Finished difference Result 17776 states and 26670 transitions. [2022-02-15 04:44:24,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 04:44:24,003 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 11 states have internal predecessors, (64), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 82 [2022-02-15 04:44:24,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:44:24,034 INFO L225 Difference]: With dead ends: 17776 [2022-02-15 04:44:24,034 INFO L226 Difference]: Without dead ends: 9351 [2022-02-15 04:44:24,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=228, Invalid=1032, Unknown=0, NotChecked=0, Total=1260 [2022-02-15 04:44:24,057 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1481 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 6694 mSolverCounterSat, 637 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 2133 SdHoareTripleChecker+Invalid, 7337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 6694 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.9s IncrementalHoareTripleChecker+Time [2022-02-15 04:44:24,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 2133 Invalid, 7337 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [637 Valid, 6694 Invalid, 6 Unknown, 0 Unchecked, 28.9s Time] [2022-02-15 04:44:24,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9351 states. [2022-02-15 04:44:27,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9351 to 8420. [2022-02-15 04:44:27,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8420 states, 6730 states have (on average 1.4187221396731056) internal successors, (9548), 6924 states have internal predecessors, (9548), 1043 states have call successors, (1043), 516 states have call predecessors, (1043), 646 states have return successors, (1777), 1015 states have call predecessors, (1777), 1029 states have call successors, (1777) [2022-02-15 04:44:27,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8420 states to 8420 states and 12368 transitions. [2022-02-15 04:44:27,308 INFO L78 Accepts]: Start accepts. Automaton has 8420 states and 12368 transitions. Word has length 82 [2022-02-15 04:44:27,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:44:27,308 INFO L470 AbstractCegarLoop]: Abstraction has 8420 states and 12368 transitions. [2022-02-15 04:44:27,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 11 states have internal predecessors, (64), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:44:27,308 INFO L276 IsEmpty]: Start isEmpty. Operand 8420 states and 12368 transitions. [2022-02-15 04:44:27,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-15 04:44:27,309 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:44:27,309 INFO L514 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:44:27,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-15 04:44:27,310 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:44:27,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:44:27,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1700892615, now seen corresponding path program 8 times [2022-02-15 04:44:27,310 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:44:27,310 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510665065] [2022-02-15 04:44:27,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:44:27,311 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 04:44:27,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:44:27,354 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:44:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:44:27,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:44:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:44:27,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:44:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:44:28,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-15 04:44:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:44:28,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-02-15 04:44:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:44:28,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:44:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:44:28,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 04:44:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:44:28,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-15 04:44:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:44:28,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 04:44:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:44:28,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:44:28,438 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:44:28,438 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510665065] [2022-02-15 04:44:28,438 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1510665065] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:44:28,438 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:44:28,438 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 04:44:28,438 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938986134] [2022-02-15 04:44:28,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:44:28,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 04:44:28,438 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:44:28,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 04:44:28,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-02-15 04:44:28,439 INFO L87 Difference]: Start difference. First operand 8420 states and 12368 transitions. Second operand has 20 states, 20 states have (on average 3.25) internal successors, (65), 12 states have internal predecessors, (65), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:44:36,425 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:44:38,540 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:44:40,659 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:44:47,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:44:56,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:44:56,732 INFO L93 Difference]: Finished difference Result 17821 states and 26715 transitions. [2022-02-15 04:44:56,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 04:44:56,733 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 12 states have internal predecessors, (65), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2022-02-15 04:44:56,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:44:56,768 INFO L225 Difference]: With dead ends: 17821 [2022-02-15 04:44:56,768 INFO L226 Difference]: Without dead ends: 9374 [2022-02-15 04:44:56,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=242, Invalid=1164, Unknown=0, NotChecked=0, Total=1406 [2022-02-15 04:44:56,793 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1241 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 6158 mSolverCounterSat, 547 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 6709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 6158 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time [2022-02-15 04:44:56,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1277 Valid, 1940 Invalid, 6709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [547 Valid, 6158 Invalid, 4 Unknown, 0 Unchecked, 21.7s Time] [2022-02-15 04:44:56,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9374 states. [2022-02-15 04:45:00,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9374 to 8443. [2022-02-15 04:45:00,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8443 states, 6753 states have (on average 1.4172960165852213) internal successors, (9571), 6947 states have internal predecessors, (9571), 1043 states have call successors, (1043), 516 states have call predecessors, (1043), 646 states have return successors, (1777), 1015 states have call predecessors, (1777), 1029 states have call successors, (1777) [2022-02-15 04:45:00,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8443 states to 8443 states and 12391 transitions. [2022-02-15 04:45:00,143 INFO L78 Accepts]: Start accepts. Automaton has 8443 states and 12391 transitions. Word has length 83 [2022-02-15 04:45:00,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:45:00,143 INFO L470 AbstractCegarLoop]: Abstraction has 8443 states and 12391 transitions. [2022-02-15 04:45:00,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 12 states have internal predecessors, (65), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:45:00,143 INFO L276 IsEmpty]: Start isEmpty. Operand 8443 states and 12391 transitions. [2022-02-15 04:45:00,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-15 04:45:00,144 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:45:00,144 INFO L514 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:45:00,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-15 04:45:00,145 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:45:00,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:45:00,145 INFO L85 PathProgramCache]: Analyzing trace with hash -196637707, now seen corresponding path program 9 times [2022-02-15 04:45:00,145 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:45:00,145 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835373715] [2022-02-15 04:45:00,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:45:00,146 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 04:45:00,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:45:00,161 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:45:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:45:00,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:45:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:45:00,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:45:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:45:01,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-15 04:45:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:45:01,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-02-15 04:45:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:45:01,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:45:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:45:01,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-15 04:45:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:45:01,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-02-15 04:45:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:45:01,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 04:45:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:45:01,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:45:01,701 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:45:01,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835373715] [2022-02-15 04:45:01,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [835373715] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:45:01,702 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:45:01,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-15 04:45:01,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098322832] [2022-02-15 04:45:01,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:45:01,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 04:45:01,702 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:45:01,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 04:45:01,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2022-02-15 04:45:01,703 INFO L87 Difference]: Start difference. First operand 8443 states and 12391 transitions. Second operand has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 13 states have internal predecessors, (66), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:45:16,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:45:26,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:45:26,353 INFO L93 Difference]: Finished difference Result 17866 states and 26760 transitions. [2022-02-15 04:45:26,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-15 04:45:26,354 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 13 states have internal predecessors, (66), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2022-02-15 04:45:26,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:45:26,390 INFO L225 Difference]: With dead ends: 17866 [2022-02-15 04:45:26,390 INFO L226 Difference]: Without dead ends: 9397 [2022-02-15 04:45:26,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=256, Invalid=1304, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 04:45:26,417 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1536 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 5794 mSolverCounterSat, 679 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 6474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 679 IncrementalHoareTripleChecker+Valid, 5794 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2022-02-15 04:45:26,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1572 Valid, 1940 Invalid, 6474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [679 Valid, 5794 Invalid, 1 Unknown, 0 Unchecked, 17.5s Time] [2022-02-15 04:45:26,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9397 states. [2022-02-15 04:45:29,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9397 to 8466. [2022-02-15 04:45:29,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8466 states, 6776 states have (on average 1.415879574970484) internal successors, (9594), 6970 states have internal predecessors, (9594), 1043 states have call successors, (1043), 516 states have call predecessors, (1043), 646 states have return successors, (1777), 1015 states have call predecessors, (1777), 1029 states have call successors, (1777) [2022-02-15 04:45:29,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8466 states to 8466 states and 12414 transitions. [2022-02-15 04:45:29,851 INFO L78 Accepts]: Start accepts. Automaton has 8466 states and 12414 transitions. Word has length 84 [2022-02-15 04:45:29,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:45:29,851 INFO L470 AbstractCegarLoop]: Abstraction has 8466 states and 12414 transitions. [2022-02-15 04:45:29,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 13 states have internal predecessors, (66), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:45:29,852 INFO L276 IsEmpty]: Start isEmpty. Operand 8466 states and 12414 transitions. [2022-02-15 04:45:29,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-15 04:45:29,853 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:45:29,853 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:45:29,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-15 04:45:29,853 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:45:29,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:45:29,853 INFO L85 PathProgramCache]: Analyzing trace with hash -809375815, now seen corresponding path program 10 times [2022-02-15 04:45:29,853 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:45:29,854 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989048359] [2022-02-15 04:45:29,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:45:29,854 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 04:45:29,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:45:29,869 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:45:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:45:30,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:45:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:45:30,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:45:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:45:31,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-15 04:45:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:45:31,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-15 04:45:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:45:31,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:45:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:45:31,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-15 04:45:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:45:31,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-02-15 04:45:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:45:31,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 04:45:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:45:31,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:45:31,563 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:45:31,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989048359] [2022-02-15 04:45:31,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [989048359] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:45:31,563 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:45:31,563 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-15 04:45:31,563 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564877558] [2022-02-15 04:45:31,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:45:31,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 04:45:31,564 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:45:31,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 04:45:31,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-02-15 04:45:31,564 INFO L87 Difference]: Start difference. First operand 8466 states and 12414 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 14 states have internal predecessors, (67), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:45:43,261 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:45:45,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:45:54,331 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:46:05,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:46:05,254 INFO L93 Difference]: Finished difference Result 17911 states and 26805 transitions. [2022-02-15 04:46:05,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 04:46:05,254 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 14 states have internal predecessors, (67), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 85 [2022-02-15 04:46:05,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:46:05,290 INFO L225 Difference]: With dead ends: 17911 [2022-02-15 04:46:05,290 INFO L226 Difference]: Without dead ends: 9420 [2022-02-15 04:46:05,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=270, Invalid=1452, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 04:46:05,314 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 2482 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 7334 mSolverCounterSat, 1117 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2518 SdHoareTripleChecker+Valid, 2431 SdHoareTripleChecker+Invalid, 8454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1117 IncrementalHoareTripleChecker+Valid, 7334 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2022-02-15 04:46:05,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2518 Valid, 2431 Invalid, 8454 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1117 Valid, 7334 Invalid, 3 Unknown, 0 Unchecked, 26.1s Time] [2022-02-15 04:46:05,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9420 states. [2022-02-15 04:46:08,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9420 to 8489. [2022-02-15 04:46:08,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8489 states, 6799 states have (on average 1.414472716575967) internal successors, (9617), 6993 states have internal predecessors, (9617), 1043 states have call successors, (1043), 516 states have call predecessors, (1043), 646 states have return successors, (1777), 1015 states have call predecessors, (1777), 1029 states have call successors, (1777) [2022-02-15 04:46:08,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8489 states to 8489 states and 12437 transitions. [2022-02-15 04:46:08,794 INFO L78 Accepts]: Start accepts. Automaton has 8489 states and 12437 transitions. Word has length 85 [2022-02-15 04:46:08,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:46:08,794 INFO L470 AbstractCegarLoop]: Abstraction has 8489 states and 12437 transitions. [2022-02-15 04:46:08,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 14 states have internal predecessors, (67), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:46:08,795 INFO L276 IsEmpty]: Start isEmpty. Operand 8489 states and 12437 transitions. [2022-02-15 04:46:08,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-15 04:46:08,796 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:46:08,796 INFO L514 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:46:08,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-15 04:46:08,796 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:46:08,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:46:08,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1670579317, now seen corresponding path program 11 times [2022-02-15 04:46:08,796 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:46:08,796 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659345364] [2022-02-15 04:46:08,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:46:08,797 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 04:46:08,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:46:08,812 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:46:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:46:09,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:46:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:46:09,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:46:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:46:10,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 04:46:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:46:10,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-15 04:46:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:46:10,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 04:46:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:46:10,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-15 04:46:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:46:10,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-02-15 04:46:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:46:10,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-15 04:46:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:46:10,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:46:10,603 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:46:10,603 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659345364] [2022-02-15 04:46:10,603 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1659345364] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:46:10,603 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:46:10,603 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-15 04:46:10,603 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375088542] [2022-02-15 04:46:10,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:46:10,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 04:46:10,604 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:46:10,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 04:46:10,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2022-02-15 04:46:10,604 INFO L87 Difference]: Start difference. First operand 8489 states and 12437 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 15 states have internal predecessors, (68), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:46:22,500 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:46:31,201 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 04:46:43,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:46:43,181 INFO L93 Difference]: Finished difference Result 17956 states and 26850 transitions. [2022-02-15 04:46:43,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-15 04:46:43,181 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 15 states have internal predecessors, (68), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 86 [2022-02-15 04:46:43,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:46:43,215 INFO L225 Difference]: With dead ends: 17956 [2022-02-15 04:46:43,215 INFO L226 Difference]: Without dead ends: 9443 [2022-02-15 04:46:43,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=284, Invalid=1608, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 04:46:43,238 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1608 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 8885 mSolverCounterSat, 710 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 2703 SdHoareTripleChecker+Invalid, 9597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 710 IncrementalHoareTripleChecker+Valid, 8885 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2022-02-15 04:46:43,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1644 Valid, 2703 Invalid, 9597 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [710 Valid, 8885 Invalid, 2 Unknown, 0 Unchecked, 24.9s Time] [2022-02-15 04:46:43,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9443 states. [2022-02-15 04:46:46,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9443 to 8512. [2022-02-15 04:46:46,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8512 states, 6822 states have (on average 1.4130753444737614) internal successors, (9640), 7016 states have internal predecessors, (9640), 1043 states have call successors, (1043), 516 states have call predecessors, (1043), 646 states have return successors, (1777), 1015 states have call predecessors, (1777), 1029 states have call successors, (1777) [2022-02-15 04:46:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8512 states to 8512 states and 12460 transitions. [2022-02-15 04:46:46,759 INFO L78 Accepts]: Start accepts. Automaton has 8512 states and 12460 transitions. Word has length 86 [2022-02-15 04:46:46,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:46:46,759 INFO L470 AbstractCegarLoop]: Abstraction has 8512 states and 12460 transitions. [2022-02-15 04:46:46,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 15 states have internal predecessors, (68), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 04:46:46,759 INFO L276 IsEmpty]: Start isEmpty. Operand 8512 states and 12460 transitions. [2022-02-15 04:46:46,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-02-15 04:46:46,760 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:46:46,760 INFO L514 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:46:46,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-15 04:46:46,760 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:46:46,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:46:46,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1239777081, now seen corresponding path program 12 times [2022-02-15 04:46:46,761 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:46:46,761 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451025633] [2022-02-15 04:46:46,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:46:46,762 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-15 04:46:46,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:46:46,776 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:46:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:46:47,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:46:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:46:47,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 04:46:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat