/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 02:02:02,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 02:02:02,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 02:02:02,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-24 02:02:02,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-24 02:02:02,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-24 02:02:02,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-24 02:02:02,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-24 02:02:02,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-24 02:02:02,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-24 02:02:02,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-24 02:02:02,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-24 02:02:02,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-24 02:02:02,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-24 02:02:02,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-24 02:02:02,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-24 02:02:02,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-24 02:02:02,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 02:02:02,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 02:02:02,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 02:02:02,252 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-02-24 02:02:02,266 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 02:02:02,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 02:02:02,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 02:02:02,268 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-24 02:02:02,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 02:02:02,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-24 02:02:02,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 02:02:02,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 02:02:02,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 02:02:02,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 02:02:02,270 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-24 02:02:02,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 02:02:02,270 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 02:02:02,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 02:02:02,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 02:02:02,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 02:02:02,271 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 02:02:02,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 02:02:02,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 02:02:02,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 02:02:02,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 02:02:02,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 02:02:02,271 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-24 02:02:02,272 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 02:02:02,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 02:02:02,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 02:02:02,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 02:02:02,490 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 02:02:02,491 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 02:02:02,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c [2022-02-24 02:02:02,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e2009ac1/901c4007714a48bd9a0700886d1b1fc2/FLAG31dc25fd3 [2022-02-24 02:02:03,249 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 02:02:03,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c [2022-02-24 02:02:03,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e2009ac1/901c4007714a48bd9a0700886d1b1fc2/FLAG31dc25fd3 [2022-02-24 02:02:03,523 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e2009ac1/901c4007714a48bd9a0700886d1b1fc2 [2022-02-24 02:02:03,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 02:02:03,528 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 02:02:03,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 02:02:03,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 02:02:03,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 02:02:03,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 02:02:03" (1/1) ... [2022-02-24 02:02:03,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4270091b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:02:03, skipping insertion in model container [2022-02-24 02:02:03,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 02:02:03" (1/1) ... [2022-02-24 02:02:03,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 02:02:03,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 02:02:04,221 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c[76734,76747] [2022-02-24 02:02:04,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 02:02:04,667 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 02:02:04,720 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c[76734,76747] [2022-02-24 02:02:04,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 02:02:05,019 INFO L208 MainTranslator]: Completed translation [2022-02-24 02:02:05,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:02:05 WrapperNode [2022-02-24 02:02:05,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 02:02:05,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 02:02:05,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 02:02:05,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 02:02:05,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:02:05" (1/1) ... [2022-02-24 02:02:05,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:02:05" (1/1) ... [2022-02-24 02:02:05,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:02:05" (1/1) ... [2022-02-24 02:02:05,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:02:05" (1/1) ... [2022-02-24 02:02:05,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:02:05" (1/1) ... [2022-02-24 02:02:05,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:02:05" (1/1) ... [2022-02-24 02:02:05,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:02:05" (1/1) ... [2022-02-24 02:02:05,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 02:02:05,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 02:02:05,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 02:02:05,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 02:02:05,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:02:05" (1/1) ... [2022-02-24 02:02:05,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 02:02:05,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 02:02:05,400 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-24 02:02:05,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-24 02:02:05,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 02:02:05,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 02:02:05,442 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 02:02:05,442 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-02-24 02:02:05,442 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-02-24 02:02:05,442 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-02-24 02:02:05,442 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-02-24 02:02:05,442 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyUnload [2022-02-24 02:02:05,443 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyAddDevice [2022-02-24 02:02:05,443 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConfigCallBack [2022-02-24 02:02:05,443 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-02-24 02:02:05,443 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-02-24 02:02:05,443 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-02-24 02:02:05,443 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-02-24 02:02:05,443 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-02-24 02:02:05,444 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-02-24 02:02:05,444 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-02-24 02:02:05,444 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPower [2022-02-24 02:02:05,444 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyReadWrite [2022-02-24 02:02:05,444 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInterpretError [2022-02-24 02:02:05,444 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFinishOperation [2022-02-24 02:02:05,445 INFO L138 BoogieDeclarations]: Found implementation of procedure FlStartDrive [2022-02-24 02:02:05,445 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDatarateSpecifyConfigure [2022-02-24 02:02:05,445 INFO L138 BoogieDeclarations]: Found implementation of procedure FlRecalibrateDrive [2022-02-24 02:02:05,445 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDetermineMediaType [2022-02-24 02:02:05,445 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAllocateIoBuffer [2022-02-24 02:02:05,445 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFreeIoBuffer [2022-02-24 02:02:05,445 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyThread [2022-02-24 02:02:05,445 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConsolidateMediaTypeWithBootSector [2022-02-24 02:02:05,446 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckBootSector [2022-02-24 02:02:05,446 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWriteTrack [2022-02-24 02:02:05,446 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWrite [2022-02-24 02:02:05,446 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFormat [2022-02-24 02:02:05,446 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2022-02-24 02:02:05,446 INFO L138 BoogieDeclarations]: Found implementation of procedure FlIssueCommand [2022-02-24 02:02:05,446 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInitializeControllerHardware [2022-02-24 02:02:05,446 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-02-24 02:02:05,446 INFO L138 BoogieDeclarations]: Found implementation of procedure FlHdbit [2022-02-24 02:02:05,446 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-02-24 02:02:05,446 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCancelQueuedRequest [2022-02-24 02:02:05,446 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-02-24 02:02:05,447 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-02-24 02:02:05,447 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 02:02:05,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-02-24 02:02:05,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-02-24 02:02:05,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-02-24 02:02:05,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-02-24 02:02:05,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-02-24 02:02:05,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-02-24 02:02:05,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-02-24 02:02:05,447 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-02-24 02:02:05,447 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-02-24 02:02:05,448 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-02-24 02:02:05,448 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-02-24 02:02:05,448 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-02-24 02:02:05,448 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-02-24 02:02:05,448 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-02-24 02:02:05,448 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-02-24 02:02:05,448 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-02-24 02:02:05,448 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-02-24 02:02:05,448 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-02-24 02:02:05,448 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-02-24 02:02:05,448 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-02-24 02:02:05,448 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-02-24 02:02:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-02-24 02:02:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-02-24 02:02:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-02-24 02:02:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-02-24 02:02:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-02-24 02:02:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-02-24 02:02:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-02-24 02:02:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-02-24 02:02:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-02-24 02:02:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-02-24 02:02:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-02-24 02:02:05,449 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-02-24 02:02:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-02-24 02:02:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-02-24 02:02:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-02-24 02:02:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-02-24 02:02:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-02-24 02:02:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-02-24 02:02:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-02-24 02:02:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-02-24 02:02:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-02-24 02:02:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-02-24 02:02:05,450 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-02-24 02:02:05,451 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-02-24 02:02:05,451 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-02-24 02:02:05,451 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-02-24 02:02:05,451 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-02-24 02:02:05,451 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-02-24 02:02:05,451 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-02-24 02:02:05,451 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-02-24 02:02:05,451 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-02-24 02:02:05,451 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-02-24 02:02:05,451 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-02-24 02:02:05,452 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-02-24 02:02:05,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-02-24 02:02:05,452 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-02-24 02:02:05,452 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-02-24 02:02:05,452 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-02-24 02:02:05,452 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 02:02:05,452 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 02:02:05,452 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 02:02:05,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 02:02:05,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-24 02:02:05,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-24 02:02:05,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-24 02:02:05,453 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2022-02-24 02:02:05,453 INFO L130 BoogieDeclarations]: Found specification of procedure swprintf [2022-02-24 02:02:05,453 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-02-24 02:02:05,453 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-02-24 02:02:05,453 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-02-24 02:02:05,453 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-02-24 02:02:05,453 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-02-24 02:02:05,453 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-02-24 02:02:05,454 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-02-24 02:02:05,454 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-02-24 02:02:05,454 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-02-24 02:02:05,454 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-02-24 02:02:05,454 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-02-24 02:02:05,454 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-02-24 02:02:05,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 02:02:05,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 02:02:05,454 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-02-24 02:02:05,454 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-02-24 02:02:05,454 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-02-24 02:02:05,454 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-02-24 02:02:05,455 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-02-24 02:02:05,455 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-02-24 02:02:05,455 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-02-24 02:02:05,455 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-02-24 02:02:05,455 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-02-24 02:02:05,455 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-02-24 02:02:05,455 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-02-24 02:02:05,455 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-02-24 02:02:05,455 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-02-24 02:02:05,455 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-02-24 02:02:05,455 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-02-24 02:02:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-02-24 02:02:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-02-24 02:02:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-02-24 02:02:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-02-24 02:02:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-02-24 02:02:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-02-24 02:02:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-02-24 02:02:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-02-24 02:02:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-02-24 02:02:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-02-24 02:02:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-02-24 02:02:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-02-24 02:02:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-02-24 02:02:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-02-24 02:02:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-02-24 02:02:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-02-24 02:02:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-02-24 02:02:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-02-24 02:02:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-02-24 02:02:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-02-24 02:02:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-02-24 02:02:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-02-24 02:02:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-02-24 02:02:05,458 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-02-24 02:02:05,458 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-02-24 02:02:05,458 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-02-24 02:02:05,458 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-02-24 02:02:05,458 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-02-24 02:02:05,458 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-02-24 02:02:05,458 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-02-24 02:02:05,458 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-02-24 02:02:05,458 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-02-24 02:02:05,458 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyUnload [2022-02-24 02:02:05,458 INFO L130 BoogieDeclarations]: Found specification of procedure FlConfigCallBack [2022-02-24 02:02:05,458 INFO L130 BoogieDeclarations]: Found specification of procedure FlInitializeControllerHardware [2022-02-24 02:02:05,459 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-02-24 02:02:05,459 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-02-24 02:02:05,459 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyReadWrite [2022-02-24 02:02:05,459 INFO L130 BoogieDeclarations]: Found specification of procedure FlRecalibrateDrive [2022-02-24 02:02:05,463 INFO L130 BoogieDeclarations]: Found specification of procedure FlDatarateSpecifyConfigure [2022-02-24 02:02:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure FlStartDrive [2022-02-24 02:02:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure FlFinishOperation [2022-02-24 02:02:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure FlDetermineMediaType [2022-02-24 02:02:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyThread [2022-02-24 02:02:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWrite [2022-02-24 02:02:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure FlFormat [2022-02-24 02:02:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure FlIssueCommand [2022-02-24 02:02:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2022-02-24 02:02:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-02-24 02:02:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure FlInterpretError [2022-02-24 02:02:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure FlAllocateIoBuffer [2022-02-24 02:02:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure FlFreeIoBuffer [2022-02-24 02:02:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure FlConsolidateMediaTypeWithBootSector [2022-02-24 02:02:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckBootSector [2022-02-24 02:02:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWriteTrack [2022-02-24 02:02:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-02-24 02:02:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyAddDevice [2022-02-24 02:02:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-02-24 02:02:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPower [2022-02-24 02:02:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-02-24 02:02:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-02-24 02:02:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-02-24 02:02:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-02-24 02:02:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCancelQueuedRequest [2022-02-24 02:02:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-02-24 02:02:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure FlHdbit [2022-02-24 02:02:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-02-24 02:02:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-02-24 02:02:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-02-24 02:02:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-02-24 02:02:05,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-02-24 02:02:05,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-02-24 02:02:05,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-24 02:02:05,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 02:02:05,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-02-24 02:02:05,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-02-24 02:02:05,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-02-24 02:02:05,468 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-02-24 02:02:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 02:02:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-02-24 02:02:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-02-24 02:02:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 02:02:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 02:02:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 02:02:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-02-24 02:02:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-02-24 02:02:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-02-24 02:02:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-02-24 02:02:06,119 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 02:02:06,124 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 02:02:06,160 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:06,218 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:02:06,219 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:02:06,219 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:06,228 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:02:06,228 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:02:07,985 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:07,990 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:02:07,991 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:02:07,991 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:07,999 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:02:07,999 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:02:08,003 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:08,009 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:02:08,009 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:02:08,044 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:08,050 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:02:08,051 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:02:08,051 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:08,059 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:02:08,059 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:02:08,059 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:08,069 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:02:08,069 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:02:08,124 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:08,180 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-02-24 02:02:08,180 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-02-24 02:02:08,246 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:08,257 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:02:08,257 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:02:08,258 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:08,263 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:02:08,263 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:02:08,265 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:08,280 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:02:08,280 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:02:08,291 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:08,300 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:02:08,300 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:02:08,303 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:08,308 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:02:08,313 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:02:14,288 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:14,304 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-24 02:02:14,305 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-24 02:02:14,359 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:14,680 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-02-24 02:02:14,681 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-02-24 02:02:15,039 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:15,043 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:02:15,043 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:02:15,109 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:15,136 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-02-24 02:02:15,136 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-02-24 02:02:15,139 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:15,279 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-02-24 02:02:15,279 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-02-24 02:02:15,279 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:15,332 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-02-24 02:02:15,332 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-02-24 02:02:25,374 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:25,377 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:02:25,378 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:02:25,460 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:25,463 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:02:25,463 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:02:25,483 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:27,887 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-02-24 02:02:27,887 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-02-24 02:02:27,924 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:28,183 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-02-24 02:02:28,183 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-02-24 02:02:28,184 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:28,199 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-24 02:02:28,199 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-24 02:02:28,199 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:28,233 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-02-24 02:02:28,234 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-02-24 02:02:28,236 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:28,245 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-02-24 02:02:28,245 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-02-24 02:02:28,289 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:28,293 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:02:28,293 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:02:28,304 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:28,309 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 02:02:28,309 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 02:02:28,310 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:28,379 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume !false; [2022-02-24 02:02:28,379 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume false; [2022-02-24 02:02:28,418 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 02:02:30,818 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2022-02-24 02:02:30,818 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2022-02-24 02:02:30,851 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 02:02:30,888 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 02:02:30,889 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2022-02-24 02:02:30,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 02:02:30 BoogieIcfgContainer [2022-02-24 02:02:30,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 02:02:30,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 02:02:30,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 02:02:30,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 02:02:30,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 02:02:03" (1/3) ... [2022-02-24 02:02:30,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698a2721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 02:02:30, skipping insertion in model container [2022-02-24 02:02:30,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 02:02:05" (2/3) ... [2022-02-24 02:02:30,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698a2721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 02:02:30, skipping insertion in model container [2022-02-24 02:02:30,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 02:02:30" (3/3) ... [2022-02-24 02:02:30,903 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-1.c [2022-02-24 02:02:30,909 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 02:02:30,909 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 02:02:30,952 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 02:02:30,968 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-02-24 02:02:30,969 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 02:02:31,015 INFO L276 IsEmpty]: Start isEmpty. Operand has 1449 states, 1151 states have (on average 1.523023457862728) internal successors, (1753), 1192 states have internal predecessors, (1753), 221 states have call successors, (221), 72 states have call predecessors, (221), 72 states have return successors, (221), 215 states have call predecessors, (221), 221 states have call successors, (221) [2022-02-24 02:02:31,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-24 02:02:31,022 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:02:31,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:02:31,024 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:02:31,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:02:31,029 INFO L85 PathProgramCache]: Analyzing trace with hash 760330439, now seen corresponding path program 1 times [2022-02-24 02:02:31,035 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:02:31,036 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883706440] [2022-02-24 02:02:31,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:02:31,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:02:31,174 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:02:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:31,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:02:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:31,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:02:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:32,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:02:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:32,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:02:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:32,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:02:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:32,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:02:32,182 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:02:32,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883706440] [2022-02-24 02:02:32,184 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1883706440] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:02:32,184 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:02:32,184 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 02:02:32,186 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243681317] [2022-02-24 02:02:32,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:02:32,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 02:02:32,190 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:02:32,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 02:02:32,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-24 02:02:32,221 INFO L87 Difference]: Start difference. First operand has 1449 states, 1151 states have (on average 1.523023457862728) internal successors, (1753), 1192 states have internal predecessors, (1753), 221 states have call successors, (221), 72 states have call predecessors, (221), 72 states have return successors, (221), 215 states have call predecessors, (221), 221 states have call successors, (221) Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 02:02:39,407 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:40,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:02:40,372 INFO L93 Difference]: Finished difference Result 1399 states and 2144 transitions. [2022-02-24 02:02:40,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 02:02:40,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2022-02-24 02:02:40,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:02:40,400 INFO L225 Difference]: With dead ends: 1399 [2022-02-24 02:02:40,401 INFO L226 Difference]: Without dead ends: 833 [2022-02-24 02:02:40,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-02-24 02:02:40,421 INFO L933 BasicCegarLoop]: 728 mSDtfsCounter, 1822 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 2436 mSolverCounterSat, 917 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 3354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 917 IncrementalHoareTripleChecker+Valid, 2436 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:02:40,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1850 Valid, 1207 Invalid, 3354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [917 Valid, 2436 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-02-24 02:02:40,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-02-24 02:02:40,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 651. [2022-02-24 02:02:40,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 491 states have (on average 1.4256619144602851) internal successors, (700), 523 states have internal predecessors, (700), 115 states have call successors, (115), 46 states have call predecessors, (115), 44 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-02-24 02:02:40,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 906 transitions. [2022-02-24 02:02:40,595 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 906 transitions. Word has length 37 [2022-02-24 02:02:40,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:02:40,596 INFO L470 AbstractCegarLoop]: Abstraction has 651 states and 906 transitions. [2022-02-24 02:02:40,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 02:02:40,596 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 906 transitions. [2022-02-24 02:02:40,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-24 02:02:40,598 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:02:40,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:02:40,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 02:02:40,598 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:02:40,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:02:40,599 INFO L85 PathProgramCache]: Analyzing trace with hash -2031942295, now seen corresponding path program 1 times [2022-02-24 02:02:40,599 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:02:40,599 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611774998] [2022-02-24 02:02:40,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:02:40,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:02:40,618 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:02:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:40,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:02:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:40,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:02:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:41,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:02:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:41,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:02:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:41,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:02:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:41,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:02:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:02:41,141 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:02:41,141 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611774998] [2022-02-24 02:02:41,141 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [611774998] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:02:41,141 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:02:41,141 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 02:02:41,141 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893054219] [2022-02-24 02:02:41,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:02:41,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 02:02:41,142 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:02:41,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 02:02:41,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-24 02:02:41,143 INFO L87 Difference]: Start difference. First operand 651 states and 906 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 02:02:47,318 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:02:51,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:02:51,395 INFO L93 Difference]: Finished difference Result 1886 states and 2773 transitions. [2022-02-24 02:02:51,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 02:02:51,395 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2022-02-24 02:02:51,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:02:51,404 INFO L225 Difference]: With dead ends: 1886 [2022-02-24 02:02:51,404 INFO L226 Difference]: Without dead ends: 1423 [2022-02-24 02:02:51,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-02-24 02:02:51,408 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 2981 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 3567 mSolverCounterSat, 1112 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3019 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 4680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1112 IncrementalHoareTripleChecker+Valid, 3567 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:02:51,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3019 Valid, 1635 Invalid, 4680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1112 Valid, 3567 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2022-02-24 02:02:51,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2022-02-24 02:02:51,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1195. [2022-02-24 02:02:51,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 925 states have (on average 1.4086486486486487) internal successors, (1303), 956 states have internal predecessors, (1303), 177 states have call successors, (177), 79 states have call predecessors, (177), 92 states have return successors, (237), 169 states have call predecessors, (237), 161 states have call successors, (237) [2022-02-24 02:02:51,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1717 transitions. [2022-02-24 02:02:51,648 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1717 transitions. Word has length 42 [2022-02-24 02:02:51,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:02:51,649 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 1717 transitions. [2022-02-24 02:02:51,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 02:02:51,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1717 transitions. [2022-02-24 02:02:51,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-24 02:02:51,659 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:02:51,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:02:51,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 02:02:51,660 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:02:51,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:02:51,661 INFO L85 PathProgramCache]: Analyzing trace with hash 2071284277, now seen corresponding path program 1 times [2022-02-24 02:02:51,661 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:02:51,661 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352969470] [2022-02-24 02:02:51,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:02:51,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:02:51,675 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:02:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:52,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:02:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:52,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:02:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:52,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:02:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:52,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:02:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:52,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:02:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:52,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:02:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:52,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-24 02:02:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:02:52,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:02:52,388 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:02:52,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352969470] [2022-02-24 02:02:52,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1352969470] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:02:52,389 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:02:52,389 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 02:02:52,389 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807921834] [2022-02-24 02:02:52,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:02:52,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 02:02:52,390 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:02:52,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 02:02:52,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-24 02:02:52,391 INFO L87 Difference]: Start difference. First operand 1195 states and 1717 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 02:02:58,628 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:01,632 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:03,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:03:03,990 INFO L93 Difference]: Finished difference Result 2186 states and 3260 transitions. [2022-02-24 02:03:03,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 02:03:03,990 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2022-02-24 02:03:03,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:03:04,002 INFO L225 Difference]: With dead ends: 2186 [2022-02-24 02:03:04,002 INFO L226 Difference]: Without dead ends: 2168 [2022-02-24 02:03:04,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-02-24 02:03:04,004 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 2910 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 3409 mSolverCounterSat, 991 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2966 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 4402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 991 IncrementalHoareTripleChecker+Valid, 3409 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:03:04,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2966 Valid, 1372 Invalid, 4402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [991 Valid, 3409 Invalid, 2 Unknown, 0 Unchecked, 10.5s Time] [2022-02-24 02:03:04,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2022-02-24 02:03:04,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 1838. [2022-02-24 02:03:04,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1435 states have (on average 1.427177700348432) internal successors, (2048), 1486 states have internal predecessors, (2048), 261 states have call successors, (261), 121 states have call predecessors, (261), 141 states have return successors, (375), 244 states have call predecessors, (375), 245 states have call successors, (375) [2022-02-24 02:03:04,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2684 transitions. [2022-02-24 02:03:04,340 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2684 transitions. Word has length 54 [2022-02-24 02:03:04,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:03:04,342 INFO L470 AbstractCegarLoop]: Abstraction has 1838 states and 2684 transitions. [2022-02-24 02:03:04,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 02:03:04,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2684 transitions. [2022-02-24 02:03:04,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-24 02:03:04,345 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:03:04,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:03:04,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-24 02:03:04,345 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:03:04,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:03:04,346 INFO L85 PathProgramCache]: Analyzing trace with hash 546834136, now seen corresponding path program 1 times [2022-02-24 02:03:04,346 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:03:04,346 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106512194] [2022-02-24 02:03:04,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:03:04,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:03:04,362 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:03:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:04,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:03:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:04,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:03:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:04,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:03:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:04,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:03:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:04,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:03:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:04,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:03:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:04,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:03:04,915 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:03:04,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106512194] [2022-02-24 02:03:04,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1106512194] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:03:04,916 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:03:04,916 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 02:03:04,917 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279964869] [2022-02-24 02:03:04,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:03:04,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 02:03:04,919 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:03:04,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 02:03:04,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-24 02:03:04,920 INFO L87 Difference]: Start difference. First operand 1838 states and 2684 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 02:03:11,295 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:15,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:03:15,967 INFO L93 Difference]: Finished difference Result 3657 states and 5559 transitions. [2022-02-24 02:03:15,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 02:03:15,967 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-02-24 02:03:15,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:03:15,986 INFO L225 Difference]: With dead ends: 3657 [2022-02-24 02:03:15,986 INFO L226 Difference]: Without dead ends: 3654 [2022-02-24 02:03:15,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-02-24 02:03:15,989 INFO L933 BasicCegarLoop]: 1117 mSDtfsCounter, 2060 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 4325 mSolverCounterSat, 835 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2100 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 5161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 835 IncrementalHoareTripleChecker+Valid, 4325 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:03:15,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2100 Valid, 1847 Invalid, 5161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [835 Valid, 4325 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2022-02-24 02:03:15,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2022-02-24 02:03:16,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 2949. [2022-02-24 02:03:16,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2337 states have (on average 1.4394522892597348) internal successors, (3364), 2396 states have internal predecessors, (3364), 382 states have call successors, (382), 202 states have call predecessors, (382), 229 states have return successors, (577), 364 states have call predecessors, (577), 366 states have call successors, (577) [2022-02-24 02:03:16,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 4323 transitions. [2022-02-24 02:03:16,569 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 4323 transitions. Word has length 55 [2022-02-24 02:03:16,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:03:16,570 INFO L470 AbstractCegarLoop]: Abstraction has 2949 states and 4323 transitions. [2022-02-24 02:03:16,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 02:03:16,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 4323 transitions. [2022-02-24 02:03:16,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-24 02:03:16,571 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:03:16,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:03:16,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-24 02:03:16,572 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:03:16,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:03:16,572 INFO L85 PathProgramCache]: Analyzing trace with hash -893598350, now seen corresponding path program 1 times [2022-02-24 02:03:16,572 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:03:16,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488228542] [2022-02-24 02:03:16,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:03:16,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:03:16,587 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:03:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:16,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:03:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:16,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:03:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:16,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:03:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:17,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:03:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:17,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:03:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:17,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:03:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:17,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:03:17,110 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:03:17,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488228542] [2022-02-24 02:03:17,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [488228542] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:03:17,110 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:03:17,110 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 02:03:17,110 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763765806] [2022-02-24 02:03:17,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:03:17,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 02:03:17,111 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:03:17,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 02:03:17,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-24 02:03:17,112 INFO L87 Difference]: Start difference. First operand 2949 states and 4323 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 02:03:22,889 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 [] [2022-02-24 02:03:24,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:03:24,365 INFO L93 Difference]: Finished difference Result 3468 states and 5241 transitions. [2022-02-24 02:03:24,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 02:03:24,366 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-02-24 02:03:24,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:03:24,382 INFO L225 Difference]: With dead ends: 3468 [2022-02-24 02:03:24,383 INFO L226 Difference]: Without dead ends: 3464 [2022-02-24 02:03:24,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-02-24 02:03:24,385 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 1926 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 783 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 3223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 783 IncrementalHoareTripleChecker+Valid, 2439 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:03:24,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1954 Valid, 1233 Invalid, 3223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [783 Valid, 2439 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-02-24 02:03:24,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2022-02-24 02:03:24,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 2974. [2022-02-24 02:03:24,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2363 states have (on average 1.4401184934405418) internal successors, (3403), 2418 states have internal predecessors, (3403), 381 states have call successors, (381), 202 states have call predecessors, (381), 229 states have return successors, (575), 365 states have call predecessors, (575), 365 states have call successors, (575) [2022-02-24 02:03:24,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 4359 transitions. [2022-02-24 02:03:24,995 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 4359 transitions. Word has length 55 [2022-02-24 02:03:24,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:03:24,997 INFO L470 AbstractCegarLoop]: Abstraction has 2974 states and 4359 transitions. [2022-02-24 02:03:24,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 02:03:24,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 4359 transitions. [2022-02-24 02:03:24,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-24 02:03:24,999 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:03:24,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:03:24,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-24 02:03:24,999 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:03:25,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:03:25,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1696705075, now seen corresponding path program 1 times [2022-02-24 02:03:25,000 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:03:25,000 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991505901] [2022-02-24 02:03:25,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:03:25,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:03:25,015 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:03:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:25,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:03:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:25,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:03:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:25,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:03:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:25,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:03:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:25,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:03:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:25,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:03:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:25,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:03:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:25,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:03:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:25,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:03:25,682 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:03:25,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991505901] [2022-02-24 02:03:25,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1991505901] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:03:25,682 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:03:25,683 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:03:25,683 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610964473] [2022-02-24 02:03:25,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:03:25,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:03:25,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:03:25,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:03:25,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:03:25,685 INFO L87 Difference]: Start difference. First operand 2974 states and 4359 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:03:33,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:38,021 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:41,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:03:41,221 INFO L93 Difference]: Finished difference Result 4254 states and 6463 transitions. [2022-02-24 02:03:41,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-24 02:03:41,221 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2022-02-24 02:03:41,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:03:41,239 INFO L225 Difference]: With dead ends: 4254 [2022-02-24 02:03:41,239 INFO L226 Difference]: Without dead ends: 4246 [2022-02-24 02:03:41,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2022-02-24 02:03:41,242 INFO L933 BasicCegarLoop]: 1005 mSDtfsCounter, 3485 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 5607 mSolverCounterSat, 1604 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3535 SdHoareTripleChecker+Valid, 1903 SdHoareTripleChecker+Invalid, 7213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1604 IncrementalHoareTripleChecker+Valid, 5607 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:03:41,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3535 Valid, 1903 Invalid, 7213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1604 Valid, 5607 Invalid, 2 Unknown, 0 Unchecked, 12.8s Time] [2022-02-24 02:03:41,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4246 states. [2022-02-24 02:03:41,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4246 to 3598. [2022-02-24 02:03:41,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 2861 states have (on average 1.4435512058720728) internal successors, (4130), 2928 states have internal predecessors, (4130), 458 states have call successors, (458), 238 states have call predecessors, (458), 278 states have return successors, (709), 449 states have call predecessors, (709), 442 states have call successors, (709) [2022-02-24 02:03:41,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 5297 transitions. [2022-02-24 02:03:41,905 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 5297 transitions. Word has length 57 [2022-02-24 02:03:41,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:03:41,905 INFO L470 AbstractCegarLoop]: Abstraction has 3598 states and 5297 transitions. [2022-02-24 02:03:41,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:03:41,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 5297 transitions. [2022-02-24 02:03:41,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-24 02:03:41,907 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:03:41,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:03:41,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-24 02:03:41,907 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:03:41,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:03:41,908 INFO L85 PathProgramCache]: Analyzing trace with hash -582745306, now seen corresponding path program 1 times [2022-02-24 02:03:41,908 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:03:41,908 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430845171] [2022-02-24 02:03:41,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:03:41,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:03:41,920 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:03:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:42,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:03:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:42,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:03:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:42,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:03:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:42,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:03:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:42,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:03:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:42,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:03:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:42,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-24 02:03:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:42,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:03:42,431 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:03:42,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430845171] [2022-02-24 02:03:42,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [430845171] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:03:42,432 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:03:42,432 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 02:03:42,432 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405137843] [2022-02-24 02:03:42,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:03:42,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 02:03:42,432 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:03:42,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 02:03:42,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-24 02:03:42,433 INFO L87 Difference]: Start difference. First operand 3598 states and 5297 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 02:03:47,822 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:50,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:03:55,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:03:55,056 INFO L93 Difference]: Finished difference Result 11208 states and 17196 transitions. [2022-02-24 02:03:55,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 02:03:55,057 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2022-02-24 02:03:55,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:03:55,099 INFO L225 Difference]: With dead ends: 11208 [2022-02-24 02:03:55,099 INFO L226 Difference]: Without dead ends: 7864 [2022-02-24 02:03:55,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-02-24 02:03:55,119 INFO L933 BasicCegarLoop]: 893 mSDtfsCounter, 3290 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 3251 mSolverCounterSat, 1245 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3364 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 4498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 3251 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:03:55,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3364 Valid, 1587 Invalid, 4498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1245 Valid, 3251 Invalid, 2 Unknown, 0 Unchecked, 10.4s Time] [2022-02-24 02:03:55,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7864 states. [2022-02-24 02:03:56,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7864 to 6946. [2022-02-24 02:03:56,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6946 states, 5542 states have (on average 1.453446409238542) internal successors, (8055), 5692 states have internal predecessors, (8055), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-24 02:03:56,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 10479 transitions. [2022-02-24 02:03:56,345 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 10479 transitions. Word has length 57 [2022-02-24 02:03:56,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:03:56,345 INFO L470 AbstractCegarLoop]: Abstraction has 6946 states and 10479 transitions. [2022-02-24 02:03:56,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 02:03:56,345 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 10479 transitions. [2022-02-24 02:03:56,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-24 02:03:56,347 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:03:56,347 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] [2022-02-24 02:03:56,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-24 02:03:56,347 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:03:56,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:03:56,348 INFO L85 PathProgramCache]: Analyzing trace with hash -466129244, now seen corresponding path program 1 times [2022-02-24 02:03:56,348 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:03:56,348 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858609704] [2022-02-24 02:03:56,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:03:56,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:03:56,358 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:03:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:56,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:03:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:56,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:03:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:56,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:03:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:56,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:03:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:56,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:03:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:56,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:03:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:03:56,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:03:56,944 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:03:56,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858609704] [2022-02-24 02:03:56,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1858609704] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:03:56,945 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:03:56,945 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 02:03:56,945 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248964890] [2022-02-24 02:03:56,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:03:56,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 02:03:56,945 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:03:56,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 02:03:56,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-02-24 02:03:56,946 INFO L87 Difference]: Start difference. First operand 6946 states and 10479 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-24 02:04:04,227 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:12,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:04:12,079 INFO L93 Difference]: Finished difference Result 14677 states and 22415 transitions. [2022-02-24 02:04:12,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-24 02:04:12,079 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-02-24 02:04:12,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:04:12,120 INFO L225 Difference]: With dead ends: 14677 [2022-02-24 02:04:12,120 INFO L226 Difference]: Without dead ends: 8095 [2022-02-24 02:04:12,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2022-02-24 02:04:12,149 INFO L933 BasicCegarLoop]: 899 mSDtfsCounter, 5146 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 5510 mSolverCounterSat, 2198 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5191 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 7709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2198 IncrementalHoareTripleChecker+Valid, 5510 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:04:12,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5191 Valid, 1785 Invalid, 7709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2198 Valid, 5510 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2022-02-24 02:04:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8095 states. [2022-02-24 02:04:13,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8095 to 6937. [2022-02-24 02:04:13,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 5533 states have (on average 1.452015181637448) internal successors, (8034), 5683 states have internal predecessors, (8034), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-24 02:04:13,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10458 transitions. [2022-02-24 02:04:13,413 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10458 transitions. Word has length 56 [2022-02-24 02:04:13,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:04:13,414 INFO L470 AbstractCegarLoop]: Abstraction has 6937 states and 10458 transitions. [2022-02-24 02:04:13,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-24 02:04:13,415 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10458 transitions. [2022-02-24 02:04:13,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-24 02:04:13,416 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:04:13,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:04:13,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-24 02:04:13,416 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:04:13,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:04:13,417 INFO L85 PathProgramCache]: Analyzing trace with hash 2010817043, now seen corresponding path program 1 times [2022-02-24 02:04:13,417 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:04:13,417 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110581365] [2022-02-24 02:04:13,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:04:13,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:04:13,428 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:04:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:13,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:04:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:13,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:04:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:13,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:04:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:13,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:04:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:13,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:04:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:13,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:04:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:14,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-24 02:04:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:14,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:04:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:14,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:04:14,058 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:04:14,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110581365] [2022-02-24 02:04:14,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [110581365] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:04:14,058 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:04:14,058 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:04:14,058 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529448719] [2022-02-24 02:04:14,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:04:14,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:04:14,059 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:04:14,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:04:14,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:04:14,059 INFO L87 Difference]: Start difference. First operand 6937 states and 10458 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:04:21,157 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:27,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:04:27,235 INFO L93 Difference]: Finished difference Result 7820 states and 12070 transitions. [2022-02-24 02:04:27,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-24 02:04:27,236 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2022-02-24 02:04:27,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:04:27,260 INFO L225 Difference]: With dead ends: 7820 [2022-02-24 02:04:27,260 INFO L226 Difference]: Without dead ends: 7815 [2022-02-24 02:04:27,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2022-02-24 02:04:27,264 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 3649 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 4722 mSolverCounterSat, 1704 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3699 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 6427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1704 IncrementalHoareTripleChecker+Valid, 4722 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:04:27,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3699 Valid, 1777 Invalid, 6427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1704 Valid, 4722 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2022-02-24 02:04:27,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7815 states. [2022-02-24 02:04:28,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7815 to 6937. [2022-02-24 02:04:28,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 5533 states have (on average 1.4518344478583047) internal successors, (8033), 5683 states have internal predecessors, (8033), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-24 02:04:28,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10457 transitions. [2022-02-24 02:04:28,608 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10457 transitions. Word has length 57 [2022-02-24 02:04:28,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:04:28,608 INFO L470 AbstractCegarLoop]: Abstraction has 6937 states and 10457 transitions. [2022-02-24 02:04:28,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:04:28,609 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10457 transitions. [2022-02-24 02:04:28,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-24 02:04:28,610 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:04:28,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:04:28,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-24 02:04:28,610 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:04:28,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:04:28,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1929708227, now seen corresponding path program 1 times [2022-02-24 02:04:28,611 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:04:28,611 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900151114] [2022-02-24 02:04:28,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:04:28,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:04:28,622 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:04:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:28,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:04:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:28,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:04:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:29,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:04:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:29,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:04:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:29,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:04:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:29,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:04:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:29,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-24 02:04:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:29,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:04:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:29,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:04:29,218 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:04:29,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900151114] [2022-02-24 02:04:29,219 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1900151114] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:04:29,219 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:04:29,219 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:04:29,219 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495574909] [2022-02-24 02:04:29,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:04:29,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:04:29,219 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:04:29,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:04:29,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:04:29,220 INFO L87 Difference]: Start difference. First operand 6937 states and 10457 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:04:36,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:40,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:04:40,234 INFO L93 Difference]: Finished difference Result 14740 states and 22518 transitions. [2022-02-24 02:04:40,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 02:04:40,235 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2022-02-24 02:04:40,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:04:40,259 INFO L225 Difference]: With dead ends: 14740 [2022-02-24 02:04:40,260 INFO L226 Difference]: Without dead ends: 7831 [2022-02-24 02:04:40,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2022-02-24 02:04:40,287 INFO L933 BasicCegarLoop]: 699 mSDtfsCounter, 1906 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 4671 mSolverCounterSat, 822 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1938 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 5494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 822 IncrementalHoareTripleChecker+Valid, 4671 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:04:40,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1938 Valid, 1813 Invalid, 5494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [822 Valid, 4671 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-02-24 02:04:40,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7831 states. [2022-02-24 02:04:41,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7831 to 6937. [2022-02-24 02:04:41,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 5533 states have (on average 1.4516537140791614) internal successors, (8032), 5683 states have internal predecessors, (8032), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-24 02:04:41,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10456 transitions. [2022-02-24 02:04:41,561 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10456 transitions. Word has length 58 [2022-02-24 02:04:41,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:04:41,561 INFO L470 AbstractCegarLoop]: Abstraction has 6937 states and 10456 transitions. [2022-02-24 02:04:41,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:04:41,562 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10456 transitions. [2022-02-24 02:04:41,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-24 02:04:41,563 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:04:41,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:04:41,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-24 02:04:41,564 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:04:41,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:04:41,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1006356351, now seen corresponding path program 1 times [2022-02-24 02:04:41,564 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:04:41,564 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57423754] [2022-02-24 02:04:41,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:04:41,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:04:41,576 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 02:04:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:41,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:04:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:41,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:04:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:42,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 02:04:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:42,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:04:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:42,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:04:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:42,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:04:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:42,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-02-24 02:04:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:42,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:04:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:04:42,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:04:42,278 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:04:42,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57423754] [2022-02-24 02:04:42,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [57423754] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:04:42,278 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:04:42,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 02:04:42,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512249709] [2022-02-24 02:04:42,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:04:42,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 02:04:42,278 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:04:42,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 02:04:42,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-02-24 02:04:42,279 INFO L87 Difference]: Start difference. First operand 6937 states and 10456 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:04:47,968 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:50,072 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:52,210 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:54,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:04:58,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:02,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:05:02,315 INFO L93 Difference]: Finished difference Result 14697 states and 22709 transitions. [2022-02-24 02:05:02,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-24 02:05:02,316 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2022-02-24 02:05:02,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:05:02,356 INFO L225 Difference]: With dead ends: 14697 [2022-02-24 02:05:02,357 INFO L226 Difference]: Without dead ends: 7729 [2022-02-24 02:05:02,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2022-02-24 02:05:02,397 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1887 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 3873 mSolverCounterSat, 744 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1917 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 4622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 744 IncrementalHoareTripleChecker+Valid, 3873 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:05:02,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1917 Valid, 1662 Invalid, 4622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [744 Valid, 3873 Invalid, 5 Unknown, 0 Unchecked, 17.4s Time] [2022-02-24 02:05:02,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7729 states. [2022-02-24 02:05:03,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7729 to 6958. [2022-02-24 02:05:03,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6958 states, 5554 states have (on average 1.4499459848757652) internal successors, (8053), 5704 states have internal predecessors, (8053), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-24 02:05:03,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6958 states to 6958 states and 10477 transitions. [2022-02-24 02:05:03,827 INFO L78 Accepts]: Start accepts. Automaton has 6958 states and 10477 transitions. Word has length 63 [2022-02-24 02:05:03,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:05:03,828 INFO L470 AbstractCegarLoop]: Abstraction has 6958 states and 10477 transitions. [2022-02-24 02:05:03,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:05:03,828 INFO L276 IsEmpty]: Start isEmpty. Operand 6958 states and 10477 transitions. [2022-02-24 02:05:03,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-24 02:05:03,829 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:05:03,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:05:03,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-24 02:05:03,830 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:05:03,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:05:03,830 INFO L85 PathProgramCache]: Analyzing trace with hash -427353988, now seen corresponding path program 1 times [2022-02-24 02:05:03,830 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:05:03,830 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930233205] [2022-02-24 02:05:03,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:05:03,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:05:03,863 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:05:03,863 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:05:03,863 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:05:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:04,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:05:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:04,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:05:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:04,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-24 02:05:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:04,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-24 02:05:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:04,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:05:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:04,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-24 02:05:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:04,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-02-24 02:05:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:04,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:05:04,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:05:04,624 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:05:04,624 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930233205] [2022-02-24 02:05:04,624 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1930233205] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:05:04,625 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:05:04,625 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 02:05:04,625 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520033289] [2022-02-24 02:05:04,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:05:04,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 02:05:04,625 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:05:04,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 02:05:04,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-24 02:05:04,626 INFO L87 Difference]: Start difference. First operand 6958 states and 10477 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:05:13,979 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:18,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:05:18,391 INFO L93 Difference]: Finished difference Result 14738 states and 22750 transitions. [2022-02-24 02:05:18,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 02:05:18,392 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2022-02-24 02:05:18,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:05:18,427 INFO L225 Difference]: With dead ends: 14738 [2022-02-24 02:05:18,427 INFO L226 Difference]: Without dead ends: 7750 [2022-02-24 02:05:18,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2022-02-24 02:05:18,459 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2776 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 4123 mSolverCounterSat, 1218 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2806 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 5342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1218 IncrementalHoareTripleChecker+Valid, 4123 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:05:18,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2806 Valid, 1720 Invalid, 5342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1218 Valid, 4123 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2022-02-24 02:05:18,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7750 states. [2022-02-24 02:05:19,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7750 to 6979. [2022-02-24 02:05:19,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6979 states, 5575 states have (on average 1.4482511210762332) internal successors, (8074), 5725 states have internal predecessors, (8074), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-24 02:05:19,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 10498 transitions. [2022-02-24 02:05:19,891 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 10498 transitions. Word has length 63 [2022-02-24 02:05:19,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:05:19,892 INFO L470 AbstractCegarLoop]: Abstraction has 6979 states and 10498 transitions. [2022-02-24 02:05:19,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:05:19,892 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 10498 transitions. [2022-02-24 02:05:19,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-24 02:05:19,893 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:05:19,893 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] [2022-02-24 02:05:19,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-24 02:05:19,894 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:05:19,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:05:19,894 INFO L85 PathProgramCache]: Analyzing trace with hash 2076762092, now seen corresponding path program 2 times [2022-02-24 02:05:19,894 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:05:19,894 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954902408] [2022-02-24 02:05:19,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:05:19,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:05:19,907 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:05:19,908 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:05:19,908 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:05:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:20,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:05:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:20,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:05:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:20,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-02-24 02:05:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:20,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 02:05:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:20,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:05:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:20,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-24 02:05:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:20,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 02:05:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:20,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:05:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:20,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:05:20,674 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:05:20,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954902408] [2022-02-24 02:05:20,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1954902408] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:05:20,675 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:05:20,675 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 02:05:20,675 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264461460] [2022-02-24 02:05:20,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:05:20,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 02:05:20,675 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:05:20,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 02:05:20,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-02-24 02:05:20,676 INFO L87 Difference]: Start difference. First operand 6979 states and 10498 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:05:26,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:27,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:32,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:36,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:05:36,407 INFO L93 Difference]: Finished difference Result 14779 states and 22791 transitions. [2022-02-24 02:05:36,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 02:05:36,408 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2022-02-24 02:05:36,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:05:36,447 INFO L225 Difference]: With dead ends: 14779 [2022-02-24 02:05:36,447 INFO L226 Difference]: Without dead ends: 7771 [2022-02-24 02:05:36,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2022-02-24 02:05:36,486 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2610 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 4028 mSolverCounterSat, 1153 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2640 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 5183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 4028 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-02-24 02:05:36,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2640 Valid, 1710 Invalid, 5183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 4028 Invalid, 2 Unknown, 0 Unchecked, 12.9s Time] [2022-02-24 02:05:36,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7771 states. [2022-02-24 02:05:38,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7771 to 7000. [2022-02-24 02:05:38,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7000 states, 5596 states have (on average 1.4465689778413153) internal successors, (8095), 5746 states have internal predecessors, (8095), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-24 02:05:38,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7000 states to 7000 states and 10519 transitions. [2022-02-24 02:05:38,082 INFO L78 Accepts]: Start accepts. Automaton has 7000 states and 10519 transitions. Word has length 64 [2022-02-24 02:05:38,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:05:38,082 INFO L470 AbstractCegarLoop]: Abstraction has 7000 states and 10519 transitions. [2022-02-24 02:05:38,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:05:38,082 INFO L276 IsEmpty]: Start isEmpty. Operand 7000 states and 10519 transitions. [2022-02-24 02:05:38,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-24 02:05:38,084 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:05:38,084 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:05:38,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-24 02:05:38,084 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:05:38,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:05:38,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1900018052, now seen corresponding path program 3 times [2022-02-24 02:05:38,085 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:05:38,085 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881830727] [2022-02-24 02:05:38,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:05:38,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:05:38,098 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:05:38,098 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:05:38,098 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:05:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:38,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:05:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:38,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:05:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:38,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-24 02:05:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:38,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-24 02:05:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:38,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:05:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:38,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 02:05:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:38,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-24 02:05:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:38,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:05:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:39,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:05:39,005 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:05:39,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881830727] [2022-02-24 02:05:39,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1881830727] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:05:39,005 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:05:39,005 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 02:05:39,006 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867485109] [2022-02-24 02:05:39,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:05:39,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 02:05:39,006 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:05:39,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 02:05:39,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-02-24 02:05:39,007 INFO L87 Difference]: Start difference. First operand 7000 states and 10519 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:05:48,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:05:53,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:05:53,437 INFO L93 Difference]: Finished difference Result 14820 states and 22832 transitions. [2022-02-24 02:05:53,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 02:05:53,437 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2022-02-24 02:05:53,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:05:53,473 INFO L225 Difference]: With dead ends: 14820 [2022-02-24 02:05:53,473 INFO L226 Difference]: Without dead ends: 7792 [2022-02-24 02:05:53,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=163, Invalid=539, Unknown=0, NotChecked=0, Total=702 [2022-02-24 02:05:53,503 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2139 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 5063 mSolverCounterSat, 956 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2169 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 6020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 956 IncrementalHoareTripleChecker+Valid, 5063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:05:53,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2169 Valid, 1917 Invalid, 6020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [956 Valid, 5063 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2022-02-24 02:05:53,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2022-02-24 02:05:55,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7021. [2022-02-24 02:05:55,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7021 states, 5617 states have (on average 1.4448994124977745) internal successors, (8116), 5767 states have internal predecessors, (8116), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-24 02:05:55,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7021 states to 7021 states and 10540 transitions. [2022-02-24 02:05:55,099 INFO L78 Accepts]: Start accepts. Automaton has 7021 states and 10540 transitions. Word has length 65 [2022-02-24 02:05:55,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:05:55,099 INFO L470 AbstractCegarLoop]: Abstraction has 7021 states and 10540 transitions. [2022-02-24 02:05:55,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:05:55,099 INFO L276 IsEmpty]: Start isEmpty. Operand 7021 states and 10540 transitions. [2022-02-24 02:05:55,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-24 02:05:55,101 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:05:55,101 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] [2022-02-24 02:05:55,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-24 02:05:55,101 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:05:55,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:05:55,102 INFO L85 PathProgramCache]: Analyzing trace with hash -369978239, now seen corresponding path program 1 times [2022-02-24 02:05:55,102 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:05:55,102 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385967672] [2022-02-24 02:05:55,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:05:55,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:05:55,117 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:05:55,117 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:05:55,117 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:05:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:55,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:05:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:55,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:05:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:55,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 02:05:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:55,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 02:05:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:55,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:05:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:55,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-24 02:05:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:56,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-24 02:05:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:56,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:05:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:05:56,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:05:56,071 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:05:56,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385967672] [2022-02-24 02:05:56,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1385967672] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:05:56,072 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:05:56,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-24 02:05:56,072 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588601024] [2022-02-24 02:05:56,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:05:56,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-24 02:05:56,072 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:05:56,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-24 02:05:56,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-02-24 02:05:56,073 INFO L87 Difference]: Start difference. First operand 7021 states and 10540 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:06:05,861 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 [] [2022-02-24 02:06:10,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:06:10,729 INFO L93 Difference]: Finished difference Result 14861 states and 22873 transitions. [2022-02-24 02:06:10,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-24 02:06:10,729 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2022-02-24 02:06:10,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:06:10,767 INFO L225 Difference]: With dead ends: 14861 [2022-02-24 02:06:10,767 INFO L226 Difference]: Without dead ends: 7813 [2022-02-24 02:06:10,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2022-02-24 02:06:10,801 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2139 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 5075 mSolverCounterSat, 959 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2169 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 6035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 959 IncrementalHoareTripleChecker+Valid, 5075 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:06:10,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2169 Valid, 1917 Invalid, 6035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [959 Valid, 5075 Invalid, 1 Unknown, 0 Unchecked, 11.4s Time] [2022-02-24 02:06:10,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7813 states. [2022-02-24 02:06:12,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7813 to 7042. [2022-02-24 02:06:12,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7042 states, 5638 states have (on average 1.443242284498049) internal successors, (8137), 5788 states have internal predecessors, (8137), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-24 02:06:12,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7042 states to 7042 states and 10561 transitions. [2022-02-24 02:06:12,803 INFO L78 Accepts]: Start accepts. Automaton has 7042 states and 10561 transitions. Word has length 67 [2022-02-24 02:06:12,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:06:12,804 INFO L470 AbstractCegarLoop]: Abstraction has 7042 states and 10561 transitions. [2022-02-24 02:06:12,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:06:12,804 INFO L276 IsEmpty]: Start isEmpty. Operand 7042 states and 10561 transitions. [2022-02-24 02:06:12,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-24 02:06:12,805 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:06:12,805 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:06:12,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-24 02:06:12,806 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:06:12,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:06:12,806 INFO L85 PathProgramCache]: Analyzing trace with hash -249355279, now seen corresponding path program 2 times [2022-02-24 02:06:12,806 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:06:12,806 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033908427] [2022-02-24 02:06:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:06:12,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:06:12,820 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:06:12,820 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:06:12,820 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:06:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:13,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:06:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:13,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:06:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:13,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-24 02:06:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:13,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-24 02:06:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:13,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:06:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:13,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-02-24 02:06:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:13,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-02-24 02:06:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:13,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:06:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:13,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:06:13,958 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:06:13,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033908427] [2022-02-24 02:06:13,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1033908427] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:06:13,959 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:06:13,959 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-24 02:06:13,959 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768496695] [2022-02-24 02:06:13,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:06:13,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-24 02:06:13,959 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:06:13,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-24 02:06:13,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-02-24 02:06:13,960 INFO L87 Difference]: Start difference. First operand 7042 states and 10561 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:06:21,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:26,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:31,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:06:31,543 INFO L93 Difference]: Finished difference Result 14902 states and 22914 transitions. [2022-02-24 02:06:31,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-24 02:06:31,544 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-02-24 02:06:31,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:06:31,581 INFO L225 Difference]: With dead ends: 14902 [2022-02-24 02:06:31,582 INFO L226 Difference]: Without dead ends: 7834 [2022-02-24 02:06:31,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=191, Invalid=739, Unknown=0, NotChecked=0, Total=930 [2022-02-24 02:06:31,616 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1754 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 5850 mSolverCounterSat, 809 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1784 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 6661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 809 IncrementalHoareTripleChecker+Valid, 5850 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:06:31,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1784 Valid, 2110 Invalid, 6661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [809 Valid, 5850 Invalid, 2 Unknown, 0 Unchecked, 14.3s Time] [2022-02-24 02:06:31,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7834 states. [2022-02-24 02:06:33,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7834 to 7063. [2022-02-24 02:06:33,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7063 states, 5659 states have (on average 1.4415974553808093) internal successors, (8158), 5809 states have internal predecessors, (8158), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-24 02:06:33,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 10582 transitions. [2022-02-24 02:06:33,295 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 10582 transitions. Word has length 68 [2022-02-24 02:06:33,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:06:33,295 INFO L470 AbstractCegarLoop]: Abstraction has 7063 states and 10582 transitions. [2022-02-24 02:06:33,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:06:33,295 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 10582 transitions. [2022-02-24 02:06:33,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-24 02:06:33,297 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:06:33,297 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] [2022-02-24 02:06:33,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-24 02:06:33,297 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:06:33,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:06:33,298 INFO L85 PathProgramCache]: Analyzing trace with hash 329647084, now seen corresponding path program 4 times [2022-02-24 02:06:33,298 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:06:33,298 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61863433] [2022-02-24 02:06:33,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:06:33,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:06:33,312 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:06:33,312 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:06:33,312 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:06:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:33,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:06:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:33,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:06:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:34,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 02:06:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:34,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-24 02:06:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:34,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:06:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:34,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-24 02:06:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:34,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-02-24 02:06:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:34,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:06:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:06:34,287 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:06:34,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61863433] [2022-02-24 02:06:34,288 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [61863433] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:06:34,288 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:06:34,288 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-24 02:06:34,288 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973191760] [2022-02-24 02:06:34,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:06:34,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-24 02:06:34,288 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:06:34,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-24 02:06:34,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-02-24 02:06:34,289 INFO L87 Difference]: Start difference. First operand 7063 states and 10582 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:06:43,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:06:48,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:06:48,346 INFO L93 Difference]: Finished difference Result 14943 states and 22955 transitions. [2022-02-24 02:06:48,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-24 02:06:48,346 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-02-24 02:06:48,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:06:48,377 INFO L225 Difference]: With dead ends: 14943 [2022-02-24 02:06:48,377 INFO L226 Difference]: Without dead ends: 7855 [2022-02-24 02:06:48,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2022-02-24 02:06:48,398 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2206 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 5064 mSolverCounterSat, 985 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2236 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 6050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 985 IncrementalHoareTripleChecker+Valid, 5064 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-02-24 02:06:48,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2236 Valid, 1894 Invalid, 6050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [985 Valid, 5064 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2022-02-24 02:06:48,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7855 states. [2022-02-24 02:06:50,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7855 to 7084. [2022-02-24 02:06:50,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7084 states, 5680 states have (on average 1.4399647887323943) internal successors, (8179), 5830 states have internal predecessors, (8179), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-24 02:06:50,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7084 states to 7084 states and 10603 transitions. [2022-02-24 02:06:50,323 INFO L78 Accepts]: Start accepts. Automaton has 7084 states and 10603 transitions. Word has length 68 [2022-02-24 02:06:50,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:06:50,323 INFO L470 AbstractCegarLoop]: Abstraction has 7084 states and 10603 transitions. [2022-02-24 02:06:50,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:06:50,323 INFO L276 IsEmpty]: Start isEmpty. Operand 7084 states and 10603 transitions. [2022-02-24 02:06:50,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-24 02:06:50,325 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:06:50,325 INFO L514 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:06:50,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-24 02:06:50,325 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:06:50,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:06:50,326 INFO L85 PathProgramCache]: Analyzing trace with hash -226008452, now seen corresponding path program 5 times [2022-02-24 02:06:50,326 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:06:50,326 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092201281] [2022-02-24 02:06:50,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:06:50,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:06:50,339 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:06:50,340 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:06:50,340 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:06:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:50,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:06:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:50,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:06:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:51,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-24 02:06:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:51,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:06:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:51,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:06:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:51,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-02-24 02:06:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:51,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-24 02:06:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:51,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:06:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:06:51,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:06:51,548 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:06:51,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092201281] [2022-02-24 02:06:51,548 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2092201281] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:06:51,548 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:06:51,548 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-24 02:06:51,548 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566603446] [2022-02-24 02:06:51,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:06:51,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-24 02:06:51,548 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:06:51,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-24 02:06:51,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2022-02-24 02:06:51,549 INFO L87 Difference]: Start difference. First operand 7084 states and 10603 transitions. Second operand has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:07:02,336 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:07,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:07:07,760 INFO L93 Difference]: Finished difference Result 14984 states and 22996 transitions. [2022-02-24 02:07:07,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-24 02:07:07,761 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2022-02-24 02:07:07,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:07:07,802 INFO L225 Difference]: With dead ends: 14984 [2022-02-24 02:07:07,803 INFO L226 Difference]: Without dead ends: 7876 [2022-02-24 02:07:07,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2022-02-24 02:07:07,834 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1999 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 6090 mSolverCounterSat, 911 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2029 SdHoareTripleChecker+Valid, 2271 SdHoareTripleChecker+Invalid, 7002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 911 IncrementalHoareTripleChecker+Valid, 6090 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-02-24 02:07:07,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2029 Valid, 2271 Invalid, 7002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [911 Valid, 6090 Invalid, 1 Unknown, 0 Unchecked, 12.4s Time] [2022-02-24 02:07:07,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7876 states. [2022-02-24 02:07:09,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7876 to 7105. [2022-02-24 02:07:09,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7105 states, 5701 states have (on average 1.4383441501490966) internal successors, (8200), 5851 states have internal predecessors, (8200), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-24 02:07:09,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 10624 transitions. [2022-02-24 02:07:09,463 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 10624 transitions. Word has length 69 [2022-02-24 02:07:09,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:07:09,463 INFO L470 AbstractCegarLoop]: Abstraction has 7105 states and 10624 transitions. [2022-02-24 02:07:09,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:07:09,463 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 10624 transitions. [2022-02-24 02:07:09,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-24 02:07:09,464 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:07:09,465 INFO L514 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:07:09,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-24 02:07:09,465 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:07:09,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:07:09,466 INFO L85 PathProgramCache]: Analyzing trace with hash -271460884, now seen corresponding path program 6 times [2022-02-24 02:07:09,466 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:07:09,466 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105446649] [2022-02-24 02:07:09,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:07:09,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:07:09,479 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:07:09,479 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:07:09,479 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:07:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:09,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:07:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:09,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:07:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:10,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 02:07:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:10,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-02-24 02:07:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:10,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:07:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:10,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 02:07:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:10,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-24 02:07:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:10,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:07:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:07:10,584 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:07:10,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105446649] [2022-02-24 02:07:10,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [105446649] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:07:10,585 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:07:10,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-24 02:07:10,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286712539] [2022-02-24 02:07:10,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:07:10,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-24 02:07:10,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:07:10,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-24 02:07:10,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2022-02-24 02:07:10,586 INFO L87 Difference]: Start difference. First operand 7105 states and 10624 transitions. Second operand has 20 states, 20 states have (on average 2.6) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:07:24,153 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:30,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:07:30,578 INFO L93 Difference]: Finished difference Result 15025 states and 23037 transitions. [2022-02-24 02:07:30,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-24 02:07:30,579 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2022-02-24 02:07:30,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:07:30,614 INFO L225 Difference]: With dead ends: 15025 [2022-02-24 02:07:30,614 INFO L226 Difference]: Without dead ends: 7897 [2022-02-24 02:07:30,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=233, Invalid=1099, Unknown=0, NotChecked=0, Total=1332 [2022-02-24 02:07:30,645 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1452 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 8537 mSolverCounterSat, 634 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 9172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 8537 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-02-24 02:07:30,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1482 Valid, 2678 Invalid, 9172 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [634 Valid, 8537 Invalid, 1 Unknown, 0 Unchecked, 16.2s Time] [2022-02-24 02:07:30,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7897 states. [2022-02-24 02:07:32,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7897 to 7126. [2022-02-24 02:07:32,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7126 states, 5722 states have (on average 1.4367354072002796) internal successors, (8221), 5872 states have internal predecessors, (8221), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-24 02:07:32,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7126 states to 7126 states and 10645 transitions. [2022-02-24 02:07:32,419 INFO L78 Accepts]: Start accepts. Automaton has 7126 states and 10645 transitions. Word has length 70 [2022-02-24 02:07:32,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:07:32,420 INFO L470 AbstractCegarLoop]: Abstraction has 7126 states and 10645 transitions. [2022-02-24 02:07:32,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:07:32,420 INFO L276 IsEmpty]: Start isEmpty. Operand 7126 states and 10645 transitions. [2022-02-24 02:07:32,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-24 02:07:32,421 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:07:32,421 INFO L514 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:07:32,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-24 02:07:32,422 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:07:32,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:07:32,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1680486276, now seen corresponding path program 7 times [2022-02-24 02:07:32,422 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:07:32,422 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245957459] [2022-02-24 02:07:32,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:07:32,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:07:32,437 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:07:32,437 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:07:32,437 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:07:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:32,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:07:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:32,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:07:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:33,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-24 02:07:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:33,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-02-24 02:07:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:33,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:07:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:33,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-24 02:07:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:33,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-02-24 02:07:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:34,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:07:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:07:34,033 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:07:34,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245957459] [2022-02-24 02:07:34,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [245957459] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:07:34,033 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:07:34,033 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-24 02:07:34,033 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662725090] [2022-02-24 02:07:34,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:07:34,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-24 02:07:34,035 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:07:34,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-24 02:07:34,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2022-02-24 02:07:34,036 INFO L87 Difference]: Start difference. First operand 7126 states and 10645 transitions. Second operand has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:07:46,920 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:07:53,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:07:53,692 INFO L93 Difference]: Finished difference Result 15066 states and 23078 transitions. [2022-02-24 02:07:53,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-24 02:07:53,692 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-02-24 02:07:53,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:07:53,722 INFO L225 Difference]: With dead ends: 15066 [2022-02-24 02:07:53,723 INFO L226 Difference]: Without dead ends: 7918 [2022-02-24 02:07:53,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=247, Invalid=1235, Unknown=0, NotChecked=0, Total=1482 [2022-02-24 02:07:53,746 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1638 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 8253 mSolverCounterSat, 692 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1668 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 8946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 692 IncrementalHoareTripleChecker+Valid, 8253 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:07:53,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1668 Valid, 2605 Invalid, 8946 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [692 Valid, 8253 Invalid, 1 Unknown, 0 Unchecked, 15.8s Time] [2022-02-24 02:07:53,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7918 states. [2022-02-24 02:07:55,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7918 to 7147. [2022-02-24 02:07:55,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7147 states, 5743 states have (on average 1.4351384293923037) internal successors, (8242), 5893 states have internal predecessors, (8242), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-24 02:07:55,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 10666 transitions. [2022-02-24 02:07:55,492 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 10666 transitions. Word has length 71 [2022-02-24 02:07:55,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:07:55,492 INFO L470 AbstractCegarLoop]: Abstraction has 7147 states and 10666 transitions. [2022-02-24 02:07:55,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:07:55,492 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 10666 transitions. [2022-02-24 02:07:55,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-24 02:07:55,493 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:07:55,494 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:07:55,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-24 02:07:55,494 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:07:55,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:07:55,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1884366828, now seen corresponding path program 8 times [2022-02-24 02:07:55,494 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:07:55,494 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284310637] [2022-02-24 02:07:55,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:07:55,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:07:55,508 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:07:55,508 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:07:55,508 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:07:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:55,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:07:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:55,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:07:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:56,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-24 02:07:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:56,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-24 02:07:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:56,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:07:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:56,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-24 02:07:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:56,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-24 02:07:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:56,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:07:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:07:56,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:07:56,872 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:07:56,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284310637] [2022-02-24 02:07:56,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1284310637] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:07:56,872 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:07:56,872 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-24 02:07:56,872 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314277706] [2022-02-24 02:07:56,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:07:56,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-24 02:07:56,872 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:07:56,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-24 02:07:56,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2022-02-24 02:07:56,873 INFO L87 Difference]: Start difference. First operand 7147 states and 10666 transitions. Second operand has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:08:06,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:08,398 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:10,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:12,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:14,845 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:16,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:24,606 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:31,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:08:31,751 INFO L93 Difference]: Finished difference Result 15107 states and 23119 transitions. [2022-02-24 02:08:31,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-24 02:08:31,752 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2022-02-24 02:08:31,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:08:31,787 INFO L225 Difference]: With dead ends: 15107 [2022-02-24 02:08:31,788 INFO L226 Difference]: Without dead ends: 7939 [2022-02-24 02:08:31,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=261, Invalid=1379, Unknown=0, NotChecked=0, Total=1640 [2022-02-24 02:08:31,817 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2614 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 7986 mSolverCounterSat, 1186 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2644 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 9179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1186 IncrementalHoareTripleChecker+Valid, 7986 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:08:31,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2644 Valid, 2727 Invalid, 9179 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1186 Valid, 7986 Invalid, 7 Unknown, 0 Unchecked, 30.5s Time] [2022-02-24 02:08:31,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7939 states. [2022-02-24 02:08:33,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7939 to 7168. [2022-02-24 02:08:33,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7168 states, 5764 states have (on average 1.4335530881332408) internal successors, (8263), 5914 states have internal predecessors, (8263), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-24 02:08:33,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7168 states to 7168 states and 10687 transitions. [2022-02-24 02:08:33,596 INFO L78 Accepts]: Start accepts. Automaton has 7168 states and 10687 transitions. Word has length 72 [2022-02-24 02:08:33,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:08:33,596 INFO L470 AbstractCegarLoop]: Abstraction has 7168 states and 10687 transitions. [2022-02-24 02:08:33,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:08:33,596 INFO L276 IsEmpty]: Start isEmpty. Operand 7168 states and 10687 transitions. [2022-02-24 02:08:33,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-24 02:08:33,598 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:08:33,598 INFO L514 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:08:33,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-24 02:08:33,598 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:08:33,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:08:33,598 INFO L85 PathProgramCache]: Analyzing trace with hash 725663356, now seen corresponding path program 9 times [2022-02-24 02:08:33,599 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:08:33,599 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257994173] [2022-02-24 02:08:33,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:08:33,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:08:33,615 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:08:33,615 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:08:33,615 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:08:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:33,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:08:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:33,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:08:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:34,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 02:08:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:34,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-24 02:08:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:34,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:08:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:35,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-24 02:08:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:35,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-02-24 02:08:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:35,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:08:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:08:35,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:08:35,177 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:08:35,177 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257994173] [2022-02-24 02:08:35,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1257994173] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:08:35,177 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:08:35,177 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-24 02:08:35,177 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617586742] [2022-02-24 02:08:35,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:08:35,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-24 02:08:35,177 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:08:35,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-24 02:08:35,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2022-02-24 02:08:35,178 INFO L87 Difference]: Start difference. First operand 7168 states and 10687 transitions. Second operand has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 15 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:08:47,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:50,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:52,152 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:08:54,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:03,456 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:12,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:09:12,347 INFO L93 Difference]: Finished difference Result 15148 states and 23160 transitions. [2022-02-24 02:09:12,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-24 02:09:12,350 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 15 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2022-02-24 02:09:12,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:09:12,383 INFO L225 Difference]: With dead ends: 15148 [2022-02-24 02:09:12,383 INFO L226 Difference]: Without dead ends: 7960 [2022-02-24 02:09:12,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=275, Invalid=1531, Unknown=0, NotChecked=0, Total=1806 [2022-02-24 02:09:12,412 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2605 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 9458 mSolverCounterSat, 1187 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2635 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 10650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1187 IncrementalHoareTripleChecker+Valid, 9458 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.0s IncrementalHoareTripleChecker+Time [2022-02-24 02:09:12,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2635 Valid, 2998 Invalid, 10650 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1187 Valid, 9458 Invalid, 5 Unknown, 0 Unchecked, 32.0s Time] [2022-02-24 02:09:12,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7960 states. [2022-02-24 02:09:14,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7960 to 7189. [2022-02-24 02:09:14,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7189 states, 5785 states have (on average 1.4319792566983578) internal successors, (8284), 5935 states have internal predecessors, (8284), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-24 02:09:14,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7189 states to 7189 states and 10708 transitions. [2022-02-24 02:09:14,232 INFO L78 Accepts]: Start accepts. Automaton has 7189 states and 10708 transitions. Word has length 73 [2022-02-24 02:09:14,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:09:14,232 INFO L470 AbstractCegarLoop]: Abstraction has 7189 states and 10708 transitions. [2022-02-24 02:09:14,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 15 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:09:14,233 INFO L276 IsEmpty]: Start isEmpty. Operand 7189 states and 10708 transitions. [2022-02-24 02:09:14,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-24 02:09:14,234 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:09:14,234 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] [2022-02-24 02:09:14,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-24 02:09:14,234 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:09:14,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:09:14,234 INFO L85 PathProgramCache]: Analyzing trace with hash -834405908, now seen corresponding path program 10 times [2022-02-24 02:09:14,235 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:09:14,235 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833057652] [2022-02-24 02:09:14,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:09:14,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:09:14,250 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:09:14,250 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:09:14,250 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:09:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:14,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:09:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:14,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:09:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:15,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-02-24 02:09:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:15,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-02-24 02:09:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:16,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:09:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:16,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-02-24 02:09:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:16,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-02-24 02:09:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:16,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:09:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:16,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:09:16,266 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:09:16,266 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833057652] [2022-02-24 02:09:16,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1833057652] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:09:16,266 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:09:16,266 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-24 02:09:16,266 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380001416] [2022-02-24 02:09:16,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:09:16,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-24 02:09:16,267 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:09:16,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-24 02:09:16,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2022-02-24 02:09:16,267 INFO L87 Difference]: Start difference. First operand 7189 states and 10708 transitions. Second operand has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 16 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), 2 states have call successors, (8) [2022-02-24 02:09:29,172 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:31,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:33,459 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:42,302 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:09:51,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:09:51,161 INFO L93 Difference]: Finished difference Result 15189 states and 23201 transitions. [2022-02-24 02:09:51,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-24 02:09:51,162 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 16 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), 2 states have call successors, (8) Word has length 74 [2022-02-24 02:09:51,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:09:51,195 INFO L225 Difference]: With dead ends: 15189 [2022-02-24 02:09:51,195 INFO L226 Difference]: Without dead ends: 7981 [2022-02-24 02:09:51,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=289, Invalid=1691, Unknown=0, NotChecked=0, Total=1980 [2022-02-24 02:09:51,220 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1980 mSDsluCounter, 2307 mSDsCounter, 0 mSdLazyCounter, 9301 mSolverCounterSat, 916 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2010 SdHoareTripleChecker+Valid, 3007 SdHoareTripleChecker+Invalid, 10221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 916 IncrementalHoareTripleChecker+Valid, 9301 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:09:51,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2010 Valid, 3007 Invalid, 10221 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [916 Valid, 9301 Invalid, 4 Unknown, 0 Unchecked, 29.8s Time] [2022-02-24 02:09:51,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7981 states. [2022-02-24 02:09:53,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7981 to 7210. [2022-02-24 02:09:53,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7210 states, 5806 states have (on average 1.4304168101963486) internal successors, (8305), 5956 states have internal predecessors, (8305), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-24 02:09:53,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7210 states to 7210 states and 10729 transitions. [2022-02-24 02:09:53,361 INFO L78 Accepts]: Start accepts. Automaton has 7210 states and 10729 transitions. Word has length 74 [2022-02-24 02:09:53,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:09:53,362 INFO L470 AbstractCegarLoop]: Abstraction has 7210 states and 10729 transitions. [2022-02-24 02:09:53,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 16 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), 2 states have call successors, (8) [2022-02-24 02:09:53,362 INFO L276 IsEmpty]: Start isEmpty. Operand 7210 states and 10729 transitions. [2022-02-24 02:09:53,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-24 02:09:53,364 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:09:53,364 INFO L514 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:09:53,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-24 02:09:53,364 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:09:53,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:09:53,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1481075697, now seen corresponding path program 3 times [2022-02-24 02:09:53,365 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:09:53,365 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502123428] [2022-02-24 02:09:53,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:09:53,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:09:53,380 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:09:53,380 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:09:53,380 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:09:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:53,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:09:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:53,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:09:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:54,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-02-24 02:09:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:55,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:09:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:55,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:09:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:55,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-24 02:09:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:55,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-02-24 02:09:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:55,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:09:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:09:55,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:09:55,430 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:09:55,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502123428] [2022-02-24 02:09:55,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [502123428] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:09:55,430 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:09:55,430 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-24 02:09:55,430 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396338245] [2022-02-24 02:09:55,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:09:55,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-24 02:09:55,431 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:09:55,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-24 02:09:55,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-02-24 02:09:55,431 INFO L87 Difference]: Start difference. First operand 7210 states and 10729 transitions. Second operand has 25 states, 25 states have (on average 2.32) internal successors, (58), 17 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) [2022-02-24 02:10:05,457 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:07,588 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:09,716 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:15,042 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:21,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:10:21,803 INFO L93 Difference]: Finished difference Result 15230 states and 23242 transitions. [2022-02-24 02:10:21,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-24 02:10:21,805 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 17 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 [2022-02-24 02:10:21,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:10:21,839 INFO L225 Difference]: With dead ends: 15230 [2022-02-24 02:10:21,839 INFO L226 Difference]: Without dead ends: 8002 [2022-02-24 02:10:21,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=303, Invalid=1859, Unknown=0, NotChecked=0, Total=2162 [2022-02-24 02:10:21,865 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1595 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 5042 mSolverCounterSat, 714 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1625 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 5760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 714 IncrementalHoareTripleChecker+Valid, 5042 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2022-02-24 02:10:21,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1625 Valid, 1733 Invalid, 5760 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [714 Valid, 5042 Invalid, 4 Unknown, 0 Unchecked, 20.6s Time] [2022-02-24 02:10:21,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8002 states. [2022-02-24 02:10:23,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8002 to 7231. [2022-02-24 02:10:23,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7231 states, 5827 states have (on average 1.4288656255362966) internal successors, (8326), 5977 states have internal predecessors, (8326), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-24 02:10:23,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7231 states to 7231 states and 10750 transitions. [2022-02-24 02:10:23,656 INFO L78 Accepts]: Start accepts. Automaton has 7231 states and 10750 transitions. Word has length 76 [2022-02-24 02:10:23,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:10:23,657 INFO L470 AbstractCegarLoop]: Abstraction has 7231 states and 10750 transitions. [2022-02-24 02:10:23,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 17 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) [2022-02-24 02:10:23,657 INFO L276 IsEmpty]: Start isEmpty. Operand 7231 states and 10750 transitions. [2022-02-24 02:10:23,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-24 02:10:23,658 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:10:23,658 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:10:23,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-24 02:10:23,658 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:10:23,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:10:23,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1298741889, now seen corresponding path program 4 times [2022-02-24 02:10:23,659 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:10:23,659 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687107966] [2022-02-24 02:10:23,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:10:23,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:10:23,670 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:10:23,670 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:10:23,670 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:10:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:23,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:10:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:23,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:10:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:25,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-24 02:10:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:25,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-02-24 02:10:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:26,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:10:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:26,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-24 02:10:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:26,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-02-24 02:10:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:26,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:10:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:10:26,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:10:26,450 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:10:26,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687107966] [2022-02-24 02:10:26,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [687107966] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:10:26,450 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:10:26,450 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-24 02:10:26,450 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493498094] [2022-02-24 02:10:26,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:10:26,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-24 02:10:26,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:10:26,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-24 02:10:26,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2022-02-24 02:10:26,451 INFO L87 Difference]: Start difference. First operand 7231 states and 10750 transitions. Second operand has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 18 states have internal predecessors, (59), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:10:44,300 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:46,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:10:58,300 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:10,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:11:10,389 INFO L93 Difference]: Finished difference Result 15271 states and 23283 transitions. [2022-02-24 02:11:10,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-24 02:11:10,390 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 18 states have internal predecessors, (59), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2022-02-24 02:11:10,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:11:10,426 INFO L225 Difference]: With dead ends: 15271 [2022-02-24 02:11:10,426 INFO L226 Difference]: Without dead ends: 8023 [2022-02-24 02:11:10,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=317, Invalid=2035, Unknown=0, NotChecked=0, Total=2352 [2022-02-24 02:11:10,451 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2154 mSDsluCounter, 2986 mSDsCounter, 0 mSdLazyCounter, 12433 mSolverCounterSat, 926 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2184 SdHoareTripleChecker+Valid, 3686 SdHoareTripleChecker+Invalid, 13361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 926 IncrementalHoareTripleChecker+Valid, 12433 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.8s IncrementalHoareTripleChecker+Time [2022-02-24 02:11:10,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2184 Valid, 3686 Invalid, 13361 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [926 Valid, 12433 Invalid, 2 Unknown, 0 Unchecked, 37.8s Time] [2022-02-24 02:11:10,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8023 states. [2022-02-24 02:11:12,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8023 to 7252. [2022-02-24 02:11:12,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7252 states, 5848 states have (on average 1.427325581395349) internal successors, (8347), 5998 states have internal predecessors, (8347), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-24 02:11:12,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7252 states to 7252 states and 10771 transitions. [2022-02-24 02:11:12,392 INFO L78 Accepts]: Start accepts. Automaton has 7252 states and 10771 transitions. Word has length 77 [2022-02-24 02:11:12,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:11:12,392 INFO L470 AbstractCegarLoop]: Abstraction has 7252 states and 10771 transitions. [2022-02-24 02:11:12,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 18 states have internal predecessors, (59), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:11:12,392 INFO L276 IsEmpty]: Start isEmpty. Operand 7252 states and 10771 transitions. [2022-02-24 02:11:12,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-24 02:11:12,393 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:11:12,393 INFO L514 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:11:12,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-24 02:11:12,394 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:11:12,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:11:12,394 INFO L85 PathProgramCache]: Analyzing trace with hash -58638863, now seen corresponding path program 5 times [2022-02-24 02:11:12,394 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:11:12,394 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2147372765] [2022-02-24 02:11:12,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:11:12,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:11:12,407 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:11:12,407 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:11:12,407 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:11:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:12,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:11:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:12,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:11:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:14,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-24 02:11:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:15,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-24 02:11:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:15,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:11:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:15,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-02-24 02:11:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:15,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-02-24 02:11:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:15,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:11:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:15,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:11:15,590 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:11:15,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2147372765] [2022-02-24 02:11:15,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2147372765] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:11:15,590 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:11:15,590 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-24 02:11:15,590 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725728556] [2022-02-24 02:11:15,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:11:15,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-24 02:11:15,591 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:11:15,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-24 02:11:15,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-02-24 02:11:15,591 INFO L87 Difference]: Start difference. First operand 7252 states and 10771 transitions. Second operand has 27 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 19 states have internal predecessors, (60), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:11:36,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:11:46,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:11:46,306 INFO L93 Difference]: Finished difference Result 15312 states and 23324 transitions. [2022-02-24 02:11:46,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-24 02:11:46,307 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 19 states have internal predecessors, (60), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2022-02-24 02:11:46,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:11:46,341 INFO L225 Difference]: With dead ends: 15312 [2022-02-24 02:11:46,341 INFO L226 Difference]: Without dead ends: 8044 [2022-02-24 02:11:46,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=331, Invalid=2219, Unknown=0, NotChecked=0, Total=2550 [2022-02-24 02:11:46,364 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2054 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 8481 mSolverCounterSat, 950 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2084 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 9432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 950 IncrementalHoareTripleChecker+Valid, 8481 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:11:46,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2084 Valid, 2727 Invalid, 9432 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [950 Valid, 8481 Invalid, 1 Unknown, 0 Unchecked, 24.1s Time] [2022-02-24 02:11:46,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8044 states. [2022-02-24 02:11:48,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8044 to 7273. [2022-02-24 02:11:48,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7273 states, 5869 states have (on average 1.4257965581870846) internal successors, (8368), 6019 states have internal predecessors, (8368), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-24 02:11:48,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7273 states to 7273 states and 10792 transitions. [2022-02-24 02:11:48,339 INFO L78 Accepts]: Start accepts. Automaton has 7273 states and 10792 transitions. Word has length 78 [2022-02-24 02:11:48,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:11:48,339 INFO L470 AbstractCegarLoop]: Abstraction has 7273 states and 10792 transitions. [2022-02-24 02:11:48,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 19 states have internal predecessors, (60), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:11:48,339 INFO L276 IsEmpty]: Start isEmpty. Operand 7273 states and 10792 transitions. [2022-02-24 02:11:48,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-24 02:11:48,340 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:11:48,340 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:11:48,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-24 02:11:48,340 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:11:48,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:11:48,341 INFO L85 PathProgramCache]: Analyzing trace with hash 812230785, now seen corresponding path program 6 times [2022-02-24 02:11:48,341 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:11:48,341 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004600705] [2022-02-24 02:11:48,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:11:48,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:11:48,356 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:11:48,356 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:11:48,356 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:11:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:48,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:11:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:48,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:11:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:52,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-02-24 02:11:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:52,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-02-24 02:11:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:52,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:11:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:52,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-24 02:11:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:53,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-02-24 02:11:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:53,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:11:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:11:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:11:53,256 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:11:53,256 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004600705] [2022-02-24 02:11:53,256 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2004600705] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:11:53,256 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:11:53,256 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-24 02:11:53,256 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357285897] [2022-02-24 02:11:53,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:11:53,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-24 02:11:53,257 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:11:53,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-24 02:11:53,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2022-02-24 02:11:53,257 INFO L87 Difference]: Start difference. First operand 7273 states and 10792 transitions. Second operand has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 20 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) [2022-02-24 02:12:03,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:05,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:08,147 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:13,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:20,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:12:20,753 INFO L93 Difference]: Finished difference Result 15353 states and 23365 transitions. [2022-02-24 02:12:20,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-24 02:12:20,754 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 20 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 [2022-02-24 02:12:20,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:12:20,793 INFO L225 Difference]: With dead ends: 15353 [2022-02-24 02:12:20,794 INFO L226 Difference]: Without dead ends: 8065 [2022-02-24 02:12:20,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=345, Invalid=2411, Unknown=0, NotChecked=0, Total=2756 [2022-02-24 02:12:20,815 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1901 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 4760 mSolverCounterSat, 855 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1931 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 5619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 855 IncrementalHoareTripleChecker+Valid, 4760 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2022-02-24 02:12:20,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1931 Valid, 1733 Invalid, 5619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [855 Valid, 4760 Invalid, 4 Unknown, 0 Unchecked, 20.5s Time] [2022-02-24 02:12:20,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8065 states. [2022-02-24 02:12:22,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8065 to 7294. [2022-02-24 02:12:22,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7294 states, 5890 states have (on average 1.4242784380305602) internal successors, (8389), 6040 states have internal predecessors, (8389), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-24 02:12:22,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7294 states to 7294 states and 10813 transitions. [2022-02-24 02:12:22,809 INFO L78 Accepts]: Start accepts. Automaton has 7294 states and 10813 transitions. Word has length 79 [2022-02-24 02:12:22,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:12:22,809 INFO L470 AbstractCegarLoop]: Abstraction has 7294 states and 10813 transitions. [2022-02-24 02:12:22,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 20 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) [2022-02-24 02:12:22,809 INFO L276 IsEmpty]: Start isEmpty. Operand 7294 states and 10813 transitions. [2022-02-24 02:12:22,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-24 02:12:22,810 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:12:22,810 INFO L514 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:12:22,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-24 02:12:22,810 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:12:22,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:12:22,811 INFO L85 PathProgramCache]: Analyzing trace with hash 2039386097, now seen corresponding path program 7 times [2022-02-24 02:12:22,811 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:12:22,811 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060978381] [2022-02-24 02:12:22,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:12:22,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:12:22,823 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:12:22,824 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:12:22,824 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:12:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:23,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:12:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:23,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:12:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:26,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 02:12:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:26,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 02:12:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:26,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:26,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-02-24 02:12:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:26,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-02-24 02:12:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:26,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:12:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:26,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:12:26,852 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:12:26,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060978381] [2022-02-24 02:12:26,852 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1060978381] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:12:26,852 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:12:26,852 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-24 02:12:26,852 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736505944] [2022-02-24 02:12:26,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:12:26,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-24 02:12:26,853 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:12:26,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-24 02:12:26,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2022-02-24 02:12:26,853 INFO L87 Difference]: Start difference. First operand 7294 states and 10813 transitions. Second operand has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 21 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:12:47,288 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:12:56,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:12:56,970 INFO L93 Difference]: Finished difference Result 15394 states and 23406 transitions. [2022-02-24 02:12:56,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-24 02:12:56,971 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 21 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2022-02-24 02:12:56,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:12:57,012 INFO L225 Difference]: With dead ends: 15394 [2022-02-24 02:12:57,013 INFO L226 Difference]: Without dead ends: 8086 [2022-02-24 02:12:57,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=359, Invalid=2611, Unknown=0, NotChecked=0, Total=2970 [2022-02-24 02:12:57,042 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1508 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 6964 mSolverCounterSat, 732 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 2197 SdHoareTripleChecker+Invalid, 7697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 732 IncrementalHoareTripleChecker+Valid, 6964 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:12:57,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1538 Valid, 2197 Invalid, 7697 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [732 Valid, 6964 Invalid, 1 Unknown, 0 Unchecked, 22.1s Time] [2022-02-24 02:12:57,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8086 states. [2022-02-24 02:12:59,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8086 to 7315. [2022-02-24 02:12:59,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7315 states, 5911 states have (on average 1.4227711047200136) internal successors, (8410), 6061 states have internal predecessors, (8410), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-24 02:12:59,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7315 states to 7315 states and 10834 transitions. [2022-02-24 02:12:59,148 INFO L78 Accepts]: Start accepts. Automaton has 7315 states and 10834 transitions. Word has length 80 [2022-02-24 02:12:59,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:12:59,148 INFO L470 AbstractCegarLoop]: Abstraction has 7315 states and 10834 transitions. [2022-02-24 02:12:59,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 21 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:12:59,148 INFO L276 IsEmpty]: Start isEmpty. Operand 7315 states and 10834 transitions. [2022-02-24 02:12:59,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-24 02:12:59,149 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:12:59,149 INFO L514 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:12:59,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-24 02:12:59,149 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:12:59,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:12:59,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1676578836, now seen corresponding path program 11 times [2022-02-24 02:12:59,149 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:12:59,150 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719980469] [2022-02-24 02:12:59,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:12:59,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:12:59,162 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:12:59,162 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:12:59,162 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:12:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:59,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:12:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:12:59,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:12:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:03,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-02-24 02:13:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-24 02:13:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:03,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:13:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:03,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-02-24 02:13:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:03,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-02-24 02:13:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:04,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:13:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:04,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:13:04,093 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:13:04,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719980469] [2022-02-24 02:13:04,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [719980469] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:13:04,093 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:13:04,093 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-24 02:13:04,093 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523649061] [2022-02-24 02:13:04,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:13:04,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-24 02:13:04,093 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:13:04,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-24 02:13:04,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2022-02-24 02:13:04,094 INFO L87 Difference]: Start difference. First operand 7315 states and 10834 transitions. Second operand has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 22 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:13:26,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:13:34,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:13:34,855 INFO L93 Difference]: Finished difference Result 15435 states and 23447 transitions. [2022-02-24 02:13:34,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-24 02:13:34,856 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 22 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2022-02-24 02:13:34,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:13:34,892 INFO L225 Difference]: With dead ends: 15435 [2022-02-24 02:13:34,893 INFO L226 Difference]: Without dead ends: 8107 [2022-02-24 02:13:34,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=373, Invalid=2819, Unknown=0, NotChecked=0, Total=3192 [2022-02-24 02:13:34,917 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2258 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 6932 mSolverCounterSat, 1034 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 7967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1034 IncrementalHoareTripleChecker+Valid, 6932 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2022-02-24 02:13:34,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2288 Valid, 2272 Invalid, 7967 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1034 Valid, 6932 Invalid, 1 Unknown, 0 Unchecked, 22.3s Time] [2022-02-24 02:13:34,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8107 states. [2022-02-24 02:13:37,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8107 to 7336. [2022-02-24 02:13:37,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7336 states, 5932 states have (on average 1.4212744436952125) internal successors, (8431), 6082 states have internal predecessors, (8431), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-24 02:13:37,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7336 states to 7336 states and 10855 transitions. [2022-02-24 02:13:37,554 INFO L78 Accepts]: Start accepts. Automaton has 7336 states and 10855 transitions. Word has length 80 [2022-02-24 02:13:37,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 02:13:37,554 INFO L470 AbstractCegarLoop]: Abstraction has 7336 states and 10855 transitions. [2022-02-24 02:13:37,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 22 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 02:13:37,554 INFO L276 IsEmpty]: Start isEmpty. Operand 7336 states and 10855 transitions. [2022-02-24 02:13:37,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-24 02:13:37,555 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 02:13:37,555 INFO L514 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 02:13:37,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-24 02:13:37,555 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 02:13:37,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 02:13:37,556 INFO L85 PathProgramCache]: Analyzing trace with hash 2005497468, now seen corresponding path program 12 times [2022-02-24 02:13:37,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 02:13:37,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467584645] [2022-02-24 02:13:37,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 02:13:37,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 02:13:37,568 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-24 02:13:37,568 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-24 02:13:37,568 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 02:13:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:37,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 02:13:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:37,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 02:13:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:42,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-24 02:13:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:42,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-24 02:13:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:42,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:13:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:43,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-02-24 02:13:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:43,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-02-24 02:13:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:43,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 02:13:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 02:13:43,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 02:13:43,423 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 02:13:43,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467584645] [2022-02-24 02:13:43,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [467584645] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 02:13:43,423 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 02:13:43,423 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-24 02:13:43,423 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732770366] [2022-02-24 02:13:43,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 02:13:43,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-24 02:13:43,424 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 02:13:43,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-24 02:13:43,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2022-02-24 02:13:43,425 INFO L87 Difference]: Start difference. First operand 7336 states and 10855 transitions. Second operand has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 23 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) [2022-02-24 02:14:38,294 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 02:15:04,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 02:15:04,068 INFO L93 Difference]: Finished difference Result 15476 states and 23488 transitions. [2022-02-24 02:15:04,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-24 02:15:04,070 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 23 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 [2022-02-24 02:15:04,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 02:15:04,109 INFO L225 Difference]: With dead ends: 15476 [2022-02-24 02:15:04,109 INFO L226 Difference]: Without dead ends: 8128 [2022-02-24 02:15:04,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=387, Invalid=3035, Unknown=0, NotChecked=0, Total=3422 [2022-02-24 02:15:04,137 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2360 mSDsluCounter, 4235 mSDsCounter, 0 mSdLazyCounter, 17278 mSolverCounterSat, 1096 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2390 SdHoareTripleChecker+Valid, 4935 SdHoareTripleChecker+Invalid, 18375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1096 IncrementalHoareTripleChecker+Valid, 17278 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.1s IncrementalHoareTripleChecker+Time [2022-02-24 02:15:04,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2390 Valid, 4935 Invalid, 18375 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1096 Valid, 17278 Invalid, 1 Unknown, 0 Unchecked, 71.1s Time] [2022-02-24 02:15:04,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8128 states.