/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 02:37:39,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 02:37:39,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 02:37:39,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 02:37:39,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 02:37:39,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 02:37:39,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 02:37:39,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 02:37:39,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 02:37:39,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 02:37:39,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 02:37:39,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 02:37:39,678 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 02:37:39,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 02:37:39,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 02:37:39,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 02:37:39,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 02:37:39,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 02:37:39,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 02:37:39,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 02:37:39,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 02:37:39,693 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-03-20 02:37:39,716 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 02:37:39,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 02:37:39,717 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-20 02:37:39,717 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-20 02:37:39,718 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 02:37:39,718 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 02:37:39,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 02:37:39,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 02:37:39,719 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 02:37:39,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 02:37:39,719 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 02:37:39,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 02:37:39,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 02:37:39,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 02:37:39,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 02:37:39,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 02:37:39,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 02:37:39,721 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 02:37:39,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 02:37:39,721 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 02:37:39,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 02:37:39,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 02:37:39,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 02:37:39,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 02:37:39,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 02:37:39,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 02:37:39,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 02:37:39,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 02:37:39,722 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 02:37:39,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 02:37:39,722 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-20 02:37:39,722 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-20 02:37:39,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 02:37:39,722 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 02:37:39,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 02:37:39,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 02:37:39,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 02:37:39,919 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 02:37:39,920 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 02:37:39,920 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c [2022-03-20 02:37:39,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a985fd89/4baf9600c0a9477e8246a566773e7eaf/FLAG8b3d64bb3 [2022-03-20 02:37:40,528 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 02:37:40,528 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c [2022-03-20 02:37:40,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a985fd89/4baf9600c0a9477e8246a566773e7eaf/FLAG8b3d64bb3 [2022-03-20 02:37:40,991 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a985fd89/4baf9600c0a9477e8246a566773e7eaf [2022-03-20 02:37:40,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 02:37:40,994 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 02:37:41,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 02:37:41,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 02:37:41,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 02:37:41,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 02:37:40" (1/1) ... [2022-03-20 02:37:41,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e1e6ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:37:41, skipping insertion in model container [2022-03-20 02:37:41,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 02:37:40" (1/1) ... [2022-03-20 02:37:41,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 02:37:41,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 02:37:41,583 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c[76734,76747] [2022-03-20 02:37:41,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 02:37:41,881 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 02:37:41,910 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c[76734,76747] [2022-03-20 02:37:42,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 02:37:42,139 INFO L208 MainTranslator]: Completed translation [2022-03-20 02:37:42,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:37:42 WrapperNode [2022-03-20 02:37:42,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 02:37:42,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 02:37:42,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 02:37:42,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 02:37:42,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:37:42" (1/1) ... [2022-03-20 02:37:42,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:37:42" (1/1) ... [2022-03-20 02:37:42,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:37:42" (1/1) ... [2022-03-20 02:37:42,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:37:42" (1/1) ... [2022-03-20 02:37:42,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:37:42" (1/1) ... [2022-03-20 02:37:42,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:37:42" (1/1) ... [2022-03-20 02:37:42,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:37:42" (1/1) ... [2022-03-20 02:37:42,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 02:37:42,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 02:37:42,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 02:37:42,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 02:37:42,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:37:42" (1/1) ... [2022-03-20 02:37:42,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 02:37:42,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 02:37:42,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 02:37:42,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 02:37:42,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 02:37:42,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 02:37:42,503 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 02:37:42,504 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-03-20 02:37:42,504 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-20 02:37:42,504 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-20 02:37:42,504 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-03-20 02:37:42,504 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyUnload [2022-03-20 02:37:42,505 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyAddDevice [2022-03-20 02:37:42,505 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConfigCallBack [2022-03-20 02:37:42,505 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-03-20 02:37:42,505 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-03-20 02:37:42,505 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-03-20 02:37:42,505 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-03-20 02:37:42,505 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-03-20 02:37:42,505 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-03-20 02:37:42,505 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-03-20 02:37:42,505 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPower [2022-03-20 02:37:42,505 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyReadWrite [2022-03-20 02:37:42,505 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInterpretError [2022-03-20 02:37:42,505 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFinishOperation [2022-03-20 02:37:42,505 INFO L138 BoogieDeclarations]: Found implementation of procedure FlStartDrive [2022-03-20 02:37:42,505 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDatarateSpecifyConfigure [2022-03-20 02:37:42,506 INFO L138 BoogieDeclarations]: Found implementation of procedure FlRecalibrateDrive [2022-03-20 02:37:42,506 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDetermineMediaType [2022-03-20 02:37:42,506 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAllocateIoBuffer [2022-03-20 02:37:42,506 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFreeIoBuffer [2022-03-20 02:37:42,506 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyThread [2022-03-20 02:37:42,506 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConsolidateMediaTypeWithBootSector [2022-03-20 02:37:42,506 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckBootSector [2022-03-20 02:37:42,506 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWriteTrack [2022-03-20 02:37:42,506 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWrite [2022-03-20 02:37:42,506 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFormat [2022-03-20 02:37:42,506 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2022-03-20 02:37:42,506 INFO L138 BoogieDeclarations]: Found implementation of procedure FlIssueCommand [2022-03-20 02:37:42,506 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInitializeControllerHardware [2022-03-20 02:37:42,506 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-03-20 02:37:42,506 INFO L138 BoogieDeclarations]: Found implementation of procedure FlHdbit [2022-03-20 02:37:42,506 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-03-20 02:37:42,507 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCancelQueuedRequest [2022-03-20 02:37:42,507 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-03-20 02:37:42,507 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-20 02:37:42,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 02:37:42,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-03-20 02:37:42,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-03-20 02:37:42,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-03-20 02:37:42,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-03-20 02:37:42,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-03-20 02:37:42,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-03-20 02:37:42,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-03-20 02:37:42,507 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-03-20 02:37:42,507 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-03-20 02:37:42,507 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-03-20 02:37:42,507 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-20 02:37:42,508 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-03-20 02:37:42,508 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-03-20 02:37:42,508 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-03-20 02:37:42,508 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-03-20 02:37:42,508 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-03-20 02:37:42,508 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-03-20 02:37:42,508 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-03-20 02:37:42,508 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-03-20 02:37:42,509 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-03-20 02:37:42,509 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-03-20 02:37:42,509 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-03-20 02:37:42,509 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-03-20 02:37:42,509 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-03-20 02:37:42,509 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-20 02:37:42,509 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-20 02:37:42,509 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-20 02:37:42,510 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-03-20 02:37:42,510 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-03-20 02:37:42,510 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-03-20 02:37:42,510 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-03-20 02:37:42,510 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-03-20 02:37:42,510 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-03-20 02:37:42,510 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-20 02:37:42,511 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-20 02:37:42,511 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-03-20 02:37:42,511 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-03-20 02:37:42,511 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-03-20 02:37:42,511 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-03-20 02:37:42,511 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-03-20 02:37:42,511 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-03-20 02:37:42,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-03-20 02:37:42,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-03-20 02:37:42,512 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-20 02:37:42,512 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-03-20 02:37:42,512 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-03-20 02:37:42,512 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-03-20 02:37:42,512 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-03-20 02:37:42,512 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-03-20 02:37:42,512 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-03-20 02:37:42,512 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-03-20 02:37:42,512 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-03-20 02:37:42,512 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-03-20 02:37:42,512 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-03-20 02:37:42,512 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-03-20 02:37:42,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-20 02:37:42,513 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-03-20 02:37:42,513 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-03-20 02:37:42,513 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-03-20 02:37:42,513 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 02:37:42,514 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 02:37:42,514 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 02:37:42,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 02:37:42,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-20 02:37:42,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 02:37:42,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-20 02:37:42,514 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2022-03-20 02:37:42,514 INFO L130 BoogieDeclarations]: Found specification of procedure swprintf [2022-03-20 02:37:42,514 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-20 02:37:42,514 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-03-20 02:37:42,514 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-03-20 02:37:42,515 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-03-20 02:37:42,515 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-03-20 02:37:42,515 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-03-20 02:37:42,515 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-03-20 02:37:42,515 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-03-20 02:37:42,515 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-03-20 02:37:42,515 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-03-20 02:37:42,515 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-03-20 02:37:42,515 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-03-20 02:37:42,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 02:37:42,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 02:37:42,516 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-03-20 02:37:42,516 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-20 02:37:42,517 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-03-20 02:37:42,517 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-03-20 02:37:42,517 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-03-20 02:37:42,519 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-20 02:37:42,519 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-03-20 02:37:42,523 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-03-20 02:37:42,523 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-03-20 02:37:42,524 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-03-20 02:37:42,524 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-03-20 02:37:42,524 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-03-20 02:37:42,524 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-03-20 02:37:42,524 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-03-20 02:37:42,524 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-03-20 02:37:42,524 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-03-20 02:37:42,524 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-03-20 02:37:42,524 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-03-20 02:37:42,524 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-03-20 02:37:42,524 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-03-20 02:37:42,524 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-03-20 02:37:42,524 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-03-20 02:37:42,524 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-03-20 02:37:42,524 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-03-20 02:37:42,524 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-03-20 02:37:42,524 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-20 02:37:42,524 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-20 02:37:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-20 02:37:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-03-20 02:37:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-03-20 02:37:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-03-20 02:37:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-03-20 02:37:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-03-20 02:37:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-03-20 02:37:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-03-20 02:37:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-03-20 02:37:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-03-20 02:37:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-03-20 02:37:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-03-20 02:37:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-03-20 02:37:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-03-20 02:37:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-20 02:37:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-03-20 02:37:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-03-20 02:37:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-03-20 02:37:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-20 02:37:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-03-20 02:37:42,525 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyUnload [2022-03-20 02:37:42,526 INFO L130 BoogieDeclarations]: Found specification of procedure FlConfigCallBack [2022-03-20 02:37:42,526 INFO L130 BoogieDeclarations]: Found specification of procedure FlInitializeControllerHardware [2022-03-20 02:37:42,526 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-03-20 02:37:42,526 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-03-20 02:37:42,526 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyReadWrite [2022-03-20 02:37:42,526 INFO L130 BoogieDeclarations]: Found specification of procedure FlRecalibrateDrive [2022-03-20 02:37:42,526 INFO L130 BoogieDeclarations]: Found specification of procedure FlDatarateSpecifyConfigure [2022-03-20 02:37:42,526 INFO L130 BoogieDeclarations]: Found specification of procedure FlStartDrive [2022-03-20 02:37:42,526 INFO L130 BoogieDeclarations]: Found specification of procedure FlFinishOperation [2022-03-20 02:37:42,526 INFO L130 BoogieDeclarations]: Found specification of procedure FlDetermineMediaType [2022-03-20 02:37:42,526 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyThread [2022-03-20 02:37:42,526 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWrite [2022-03-20 02:37:42,526 INFO L130 BoogieDeclarations]: Found specification of procedure FlFormat [2022-03-20 02:37:42,526 INFO L130 BoogieDeclarations]: Found specification of procedure FlIssueCommand [2022-03-20 02:37:42,526 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2022-03-20 02:37:42,526 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-03-20 02:37:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure FlInterpretError [2022-03-20 02:37:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure FlAllocateIoBuffer [2022-03-20 02:37:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure FlFreeIoBuffer [2022-03-20 02:37:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure FlConsolidateMediaTypeWithBootSector [2022-03-20 02:37:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckBootSector [2022-03-20 02:37:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWriteTrack [2022-03-20 02:37:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-03-20 02:37:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyAddDevice [2022-03-20 02:37:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-03-20 02:37:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPower [2022-03-20 02:37:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-03-20 02:37:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-03-20 02:37:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-03-20 02:37:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-03-20 02:37:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCancelQueuedRequest [2022-03-20 02:37:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-03-20 02:37:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure FlHdbit [2022-03-20 02:37:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-20 02:37:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-20 02:37:42,527 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-20 02:37:42,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-20 02:37:42,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-20 02:37:42,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-20 02:37:42,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-20 02:37:42,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 02:37:42,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-03-20 02:37:42,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-03-20 02:37:42,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-03-20 02:37:42,528 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-20 02:37:42,528 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 02:37:42,528 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-20 02:37:42,528 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-03-20 02:37:42,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 02:37:42,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 02:37:42,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 02:37:42,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-20 02:37:42,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-20 02:37:42,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-20 02:37:42,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-20 02:37:43,117 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 02:37:43,120 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 02:37:43,160 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:37:43,190 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:37:43,190 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:37:43,191 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:37:43,204 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:37:43,205 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:37:44,796 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:37:44,801 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:37:44,801 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:37:44,802 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:37:44,820 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:37:44,820 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:37:44,825 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:37:44,833 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:37:44,833 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:37:44,881 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:37:44,890 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:37:44,890 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:37:44,890 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:37:44,900 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:37:44,900 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:37:44,901 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:37:44,914 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:37:44,914 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:37:44,973 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:37:45,050 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-03-20 02:37:45,051 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-03-20 02:37:45,143 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:37:45,152 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:37:45,154 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:37:45,154 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:37:45,158 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:37:45,158 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:37:45,158 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:37:45,171 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:37:45,171 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:37:45,180 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:37:45,186 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:37:45,187 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:37:45,188 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:37:45,192 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:37:45,192 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:37:51,297 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:37:51,310 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-20 02:37:51,311 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-20 02:37:51,353 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:37:51,658 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-03-20 02:37:51,658 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-03-20 02:37:51,954 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:37:51,958 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:37:51,958 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:37:52,021 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:37:52,047 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-03-20 02:37:52,047 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-03-20 02:37:52,049 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:37:52,184 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-20 02:37:52,184 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-20 02:37:52,184 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:37:52,229 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-03-20 02:37:52,229 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-03-20 02:38:02,731 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:38:02,735 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:38:02,735 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:38:02,839 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:38:02,842 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:38:02,842 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:38:02,857 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:38:05,106 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-03-20 02:38:05,106 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-03-20 02:38:05,151 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:38:05,344 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-03-20 02:38:05,344 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-03-20 02:38:05,345 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:38:05,358 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-20 02:38:05,358 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-20 02:38:05,358 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:38:05,388 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-20 02:38:05,388 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-20 02:38:05,391 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:38:05,401 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-20 02:38:05,401 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-20 02:38:05,447 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:38:05,451 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:38:05,451 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:38:05,462 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:38:05,466 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 02:38:05,466 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 02:38:05,466 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:38:05,533 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume !false; [2022-03-20 02:38:05,533 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume false; [2022-03-20 02:38:05,581 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 02:38:07,927 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2022-03-20 02:38:07,928 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2022-03-20 02:38:07,951 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 02:38:07,969 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 02:38:07,969 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2022-03-20 02:38:07,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 02:38:07 BoogieIcfgContainer [2022-03-20 02:38:07,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 02:38:07,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 02:38:07,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 02:38:07,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 02:38:07,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 02:37:40" (1/3) ... [2022-03-20 02:38:07,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37fef6ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 02:38:07, skipping insertion in model container [2022-03-20 02:38:07,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 02:37:42" (2/3) ... [2022-03-20 02:38:07,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37fef6ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 02:38:07, skipping insertion in model container [2022-03-20 02:38:07,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 02:38:07" (3/3) ... [2022-03-20 02:38:07,978 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-1.c [2022-03-20 02:38:07,982 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 02:38:07,982 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 02:38:08,019 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 02:38:08,030 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 02:38:08,030 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 02:38:08,101 INFO L276 IsEmpty]: Start isEmpty. Operand has 1449 states, 1151 states have (on average 1.523023457862728) internal successors, (1753), 1192 states have internal predecessors, (1753), 221 states have call successors, (221), 72 states have call predecessors, (221), 72 states have return successors, (221), 215 states have call predecessors, (221), 221 states have call successors, (221) [2022-03-20 02:38:08,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-20 02:38:08,107 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:38:08,108 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:38:08,108 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:38:08,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:38:08,115 INFO L85 PathProgramCache]: Analyzing trace with hash 760330439, now seen corresponding path program 1 times [2022-03-20 02:38:08,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:38:08,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919447922] [2022-03-20 02:38:08,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:38:08,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:38:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:08,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:38:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:08,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:38:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:08,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 02:38:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:08,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:38:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:08,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:38:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:09,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:38:09,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:38:09,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919447922] [2022-03-20 02:38:09,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919447922] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:38:09,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:38:09,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 02:38:09,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960766933] [2022-03-20 02:38:09,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:38:09,012 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 02:38:09,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:38:09,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 02:38:09,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-20 02:38:09,041 INFO L87 Difference]: Start difference. First operand has 1449 states, 1151 states have (on average 1.523023457862728) internal successors, (1753), 1192 states have internal predecessors, (1753), 221 states have call successors, (221), 72 states have call predecessors, (221), 72 states have return successors, (221), 215 states have call predecessors, (221), 221 states have call successors, (221) Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 02:38:16,421 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:38:17,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:38:17,295 INFO L93 Difference]: Finished difference Result 1399 states and 2144 transitions. [2022-03-20 02:38:17,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-20 02:38:17,297 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2022-03-20 02:38:17,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:38:17,310 INFO L225 Difference]: With dead ends: 1399 [2022-03-20 02:38:17,310 INFO L226 Difference]: Without dead ends: 833 [2022-03-20 02:38:17,318 INFO L912 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 [2022-03-20 02:38:17,320 INFO L913 BasicCegarLoop]: 728 mSDtfsCounter, 1822 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 2436 mSolverCounterSat, 917 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s 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, 7.2s IncrementalHoareTripleChecker+Time [2022-03-20 02:38:17,321 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1850 Valid, 1207 Invalid, 3354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [917 Valid, 2436 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2022-03-20 02:38:17,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-03-20 02:38:17,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 651. [2022-03-20 02:38:17,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 491 states have (on average 1.4256619144602851) internal successors, (700), 523 states have internal predecessors, (700), 115 states have call successors, (115), 46 states have call predecessors, (115), 44 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-03-20 02:38:17,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 906 transitions. [2022-03-20 02:38:17,417 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 906 transitions. Word has length 37 [2022-03-20 02:38:17,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:38:17,417 INFO L478 AbstractCegarLoop]: Abstraction has 651 states and 906 transitions. [2022-03-20 02:38:17,418 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 02:38:17,418 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 906 transitions. [2022-03-20 02:38:17,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-20 02:38:17,419 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:38:17,419 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:38:17,419 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 02:38:17,420 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:38:17,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:38:17,420 INFO L85 PathProgramCache]: Analyzing trace with hash -2031942295, now seen corresponding path program 1 times [2022-03-20 02:38:17,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:38:17,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971179827] [2022-03-20 02:38:17,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:38:17,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:38:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:17,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:38:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:17,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:38:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:17,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 02:38:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:17,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:38:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:17,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:38:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:17,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 02:38:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:17,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:38:17,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:38:17,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971179827] [2022-03-20 02:38:17,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971179827] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:38:17,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:38:17,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 02:38:17,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714704163] [2022-03-20 02:38:17,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:38:17,973 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 02:38:17,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:38:17,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 02:38:17,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-20 02:38:17,974 INFO L87 Difference]: Start difference. First operand 651 states and 906 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 02:38:24,727 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:38:29,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:38:29,689 INFO L93 Difference]: Finished difference Result 1886 states and 2773 transitions. [2022-03-20 02:38:29,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-20 02:38:29,692 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2022-03-20 02:38:29,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:38:29,700 INFO L225 Difference]: With dead ends: 1886 [2022-03-20 02:38:29,700 INFO L226 Difference]: Without dead ends: 1423 [2022-03-20 02:38:29,703 INFO L912 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 [2022-03-20 02:38:29,705 INFO L913 BasicCegarLoop]: 924 mSDtfsCounter, 2605 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 4191 mSolverCounterSat, 913 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2643 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 5105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 913 IncrementalHoareTripleChecker+Valid, 4191 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-03-20 02:38:29,706 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2643 Valid, 1695 Invalid, 5105 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [913 Valid, 4191 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2022-03-20 02:38:29,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2022-03-20 02:38:29,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1195. [2022-03-20 02:38:29,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 925 states have (on average 1.4086486486486487) internal successors, (1303), 956 states have internal predecessors, (1303), 177 states have call successors, (177), 79 states have call predecessors, (177), 92 states have return successors, (237), 169 states have call predecessors, (237), 161 states have call successors, (237) [2022-03-20 02:38:29,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1717 transitions. [2022-03-20 02:38:29,800 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1717 transitions. Word has length 42 [2022-03-20 02:38:29,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:38:29,800 INFO L478 AbstractCegarLoop]: Abstraction has 1195 states and 1717 transitions. [2022-03-20 02:38:29,800 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 02:38:29,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1717 transitions. [2022-03-20 02:38:29,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-20 02:38:29,809 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:38:29,809 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:38:29,809 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 02:38:29,809 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:38:29,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:38:29,810 INFO L85 PathProgramCache]: Analyzing trace with hash 2071284277, now seen corresponding path program 1 times [2022-03-20 02:38:29,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:38:29,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135736648] [2022-03-20 02:38:29,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:38:29,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:38:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:30,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:38:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:30,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:38:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:30,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 02:38:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:30,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:38:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:30,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:38:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:30,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 02:38:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:30,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 02:38:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:30,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:38:30,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:38:30,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135736648] [2022-03-20 02:38:30,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135736648] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:38:30,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:38:30,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 02:38:30,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110162422] [2022-03-20 02:38:30,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:38:30,409 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 02:38:30,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:38:30,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 02:38:30,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-20 02:38:30,409 INFO L87 Difference]: Start difference. First operand 1195 states and 1717 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 02:38:36,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:38:39,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:38:39,631 INFO L93 Difference]: Finished difference Result 2186 states and 3260 transitions. [2022-03-20 02:38:39,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-20 02:38:39,631 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2022-03-20 02:38:39,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:38:39,641 INFO L225 Difference]: With dead ends: 2186 [2022-03-20 02:38:39,641 INFO L226 Difference]: Without dead ends: 2168 [2022-03-20 02:38:39,643 INFO L912 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 [2022-03-20 02:38:39,644 INFO L913 BasicCegarLoop]: 720 mSDtfsCounter, 3327 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 2918 mSolverCounterSat, 1187 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3383 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 4106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1187 IncrementalHoareTripleChecker+Valid, 2918 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-03-20 02:38:39,644 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3383 Valid, 1333 Invalid, 4106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1187 Valid, 2918 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2022-03-20 02:38:39,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2022-03-20 02:38:39,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 1838. [2022-03-20 02:38:39,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1435 states have (on average 1.427177700348432) internal successors, (2048), 1486 states have internal predecessors, (2048), 261 states have call successors, (261), 121 states have call predecessors, (261), 141 states have return successors, (375), 244 states have call predecessors, (375), 245 states have call successors, (375) [2022-03-20 02:38:39,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2684 transitions. [2022-03-20 02:38:39,758 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2684 transitions. Word has length 54 [2022-03-20 02:38:39,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:38:39,759 INFO L478 AbstractCegarLoop]: Abstraction has 1838 states and 2684 transitions. [2022-03-20 02:38:39,759 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 02:38:39,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2684 transitions. [2022-03-20 02:38:39,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-20 02:38:39,760 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:38:39,760 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:38:39,760 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 02:38:39,760 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:38:39,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:38:39,761 INFO L85 PathProgramCache]: Analyzing trace with hash 546834136, now seen corresponding path program 1 times [2022-03-20 02:38:39,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:38:39,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751052999] [2022-03-20 02:38:39,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:38:39,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:38:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:40,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:38:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:40,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:38:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:40,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 02:38:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:40,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:38:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:40,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:38:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:40,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 02:38:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:40,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:38:40,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:38:40,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751052999] [2022-03-20 02:38:40,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751052999] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:38:40,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:38:40,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 02:38:40,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044543111] [2022-03-20 02:38:40,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:38:40,232 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 02:38:40,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:38:40,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 02:38:40,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-20 02:38:40,233 INFO L87 Difference]: Start difference. First operand 1838 states and 2684 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 02:38:47,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:38:52,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:38:52,470 INFO L93 Difference]: Finished difference Result 3657 states and 5559 transitions. [2022-03-20 02:38:52,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-20 02:38:52,470 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-03-20 02:38:52,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:38:52,486 INFO L225 Difference]: With dead ends: 3657 [2022-03-20 02:38:52,486 INFO L226 Difference]: Without dead ends: 3654 [2022-03-20 02:38:52,488 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-03-20 02:38:52,488 INFO L913 BasicCegarLoop]: 1115 mSDtfsCounter, 1772 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 4807 mSolverCounterSat, 701 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 5509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 701 IncrementalHoareTripleChecker+Valid, 4807 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-03-20 02:38:52,489 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1812 Valid, 1844 Invalid, 5509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [701 Valid, 4807 Invalid, 1 Unknown, 0 Unchecked, 11.1s Time] [2022-03-20 02:38:52,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2022-03-20 02:38:52,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 2949. [2022-03-20 02:38:52,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2337 states have (on average 1.4394522892597348) internal successors, (3364), 2396 states have internal predecessors, (3364), 382 states have call successors, (382), 202 states have call predecessors, (382), 229 states have return successors, (577), 364 states have call predecessors, (577), 366 states have call successors, (577) [2022-03-20 02:38:52,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 4323 transitions. [2022-03-20 02:38:52,713 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 4323 transitions. Word has length 55 [2022-03-20 02:38:52,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:38:52,714 INFO L478 AbstractCegarLoop]: Abstraction has 2949 states and 4323 transitions. [2022-03-20 02:38:52,714 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 02:38:52,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 4323 transitions. [2022-03-20 02:38:52,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-20 02:38:52,716 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:38:52,716 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:38:52,716 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-20 02:38:52,716 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:38:52,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:38:52,716 INFO L85 PathProgramCache]: Analyzing trace with hash -893598350, now seen corresponding path program 1 times [2022-03-20 02:38:52,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:38:52,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716272254] [2022-03-20 02:38:52,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:38:52,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:38:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:52,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:38:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:53,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:38:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:53,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 02:38:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:53,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:38:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:53,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:38:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:53,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 02:38:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:38:53,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:38:53,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:38:53,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716272254] [2022-03-20 02:38:53,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716272254] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:38:53,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:38:53,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 02:38:53,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399896668] [2022-03-20 02:38:53,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:38:53,177 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 02:38:53,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:38:53,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 02:38:53,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-20 02:38:53,177 INFO L87 Difference]: Start difference. First operand 2949 states and 4323 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 02:38:59,538 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:39:01,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:39:01,085 INFO L93 Difference]: Finished difference Result 3468 states and 5241 transitions. [2022-03-20 02:39:01,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-20 02:39:01,086 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-03-20 02:39:01,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:39:01,100 INFO L225 Difference]: With dead ends: 3468 [2022-03-20 02:39:01,100 INFO L226 Difference]: Without dead ends: 3464 [2022-03-20 02:39:01,102 INFO L912 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 [2022-03-20 02:39:01,103 INFO L913 BasicCegarLoop]: 708 mSDtfsCounter, 1702 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 2792 mSolverCounterSat, 707 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 3500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2792 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-03-20 02:39:01,103 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1730 Valid, 1255 Invalid, 3500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2792 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-03-20 02:39:01,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2022-03-20 02:39:01,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 2974. [2022-03-20 02:39:01,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2363 states have (on average 1.4401184934405418) internal successors, (3403), 2418 states have internal predecessors, (3403), 381 states have call successors, (381), 202 states have call predecessors, (381), 229 states have return successors, (575), 365 states have call predecessors, (575), 365 states have call successors, (575) [2022-03-20 02:39:01,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 4359 transitions. [2022-03-20 02:39:01,304 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 4359 transitions. Word has length 55 [2022-03-20 02:39:01,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:39:01,305 INFO L478 AbstractCegarLoop]: Abstraction has 2974 states and 4359 transitions. [2022-03-20 02:39:01,305 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 02:39:01,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 4359 transitions. [2022-03-20 02:39:01,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-20 02:39:01,306 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:39:01,306 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:39:01,306 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-20 02:39:01,306 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:39:01,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:39:01,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1696705075, now seen corresponding path program 1 times [2022-03-20 02:39:01,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:39:01,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210892488] [2022-03-20 02:39:01,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:39:01,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:39:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:01,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:39:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:01,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:39:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:01,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 02:39:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:01,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:39:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:01,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:39:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:01,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 02:39:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:01,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:39:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:01,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:39:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:01,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:39:01,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:39:01,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210892488] [2022-03-20 02:39:01,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210892488] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:39:01,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:39:01,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 02:39:01,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443988441] [2022-03-20 02:39:01,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:39:01,919 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 02:39:01,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:39:01,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 02:39:01,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-20 02:39:01,920 INFO L87 Difference]: Start difference. First operand 2974 states and 4359 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 02:39:09,726 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:39:14,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:39:14,228 INFO L93 Difference]: Finished difference Result 4254 states and 6463 transitions. [2022-03-20 02:39:14,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-20 02:39:14,229 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2022-03-20 02:39:14,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:39:14,245 INFO L225 Difference]: With dead ends: 4254 [2022-03-20 02:39:14,245 INFO L226 Difference]: Without dead ends: 4246 [2022-03-20 02:39:14,247 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2022-03-20 02:39:14,249 INFO L913 BasicCegarLoop]: 1006 mSDtfsCounter, 3777 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 4820 mSolverCounterSat, 1752 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3828 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 6573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1752 IncrementalHoareTripleChecker+Valid, 4820 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-03-20 02:39:14,249 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3828 Valid, 1804 Invalid, 6573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1752 Valid, 4820 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2022-03-20 02:39:14,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4246 states. [2022-03-20 02:39:14,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4246 to 3598. [2022-03-20 02:39:14,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 2861 states have (on average 1.4435512058720728) internal successors, (4130), 2928 states have internal predecessors, (4130), 458 states have call successors, (458), 238 states have call predecessors, (458), 278 states have return successors, (709), 449 states have call predecessors, (709), 442 states have call successors, (709) [2022-03-20 02:39:14,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 5297 transitions. [2022-03-20 02:39:14,545 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 5297 transitions. Word has length 57 [2022-03-20 02:39:14,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:39:14,546 INFO L478 AbstractCegarLoop]: Abstraction has 3598 states and 5297 transitions. [2022-03-20 02:39:14,546 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 02:39:14,546 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 5297 transitions. [2022-03-20 02:39:14,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-20 02:39:14,548 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:39:14,548 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:39:14,548 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-20 02:39:14,548 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:39:14,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:39:14,549 INFO L85 PathProgramCache]: Analyzing trace with hash -582745306, now seen corresponding path program 1 times [2022-03-20 02:39:14,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:39:14,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538320861] [2022-03-20 02:39:14,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:39:14,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:39:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:14,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:39:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:14,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:39:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:14,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 02:39:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:14,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:39:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:14,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:39:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:15,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 02:39:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:15,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-20 02:39:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:15,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:39:15,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:39:15,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538320861] [2022-03-20 02:39:15,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538320861] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:39:15,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:39:15,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 02:39:15,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908562534] [2022-03-20 02:39:15,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:39:15,037 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 02:39:15,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:39:15,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 02:39:15,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-20 02:39:15,038 INFO L87 Difference]: Start difference. First operand 3598 states and 5297 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 02:39:21,408 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:39:26,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:39:26,041 INFO L93 Difference]: Finished difference Result 11208 states and 17196 transitions. [2022-03-20 02:39:26,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-20 02:39:26,043 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2022-03-20 02:39:26,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:39:26,082 INFO L225 Difference]: With dead ends: 11208 [2022-03-20 02:39:26,082 INFO L226 Difference]: Without dead ends: 7864 [2022-03-20 02:39:26,100 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-03-20 02:39:26,101 INFO L913 BasicCegarLoop]: 893 mSDtfsCounter, 2613 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 4030 mSolverCounterSat, 899 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2687 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 4930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 899 IncrementalHoareTripleChecker+Valid, 4030 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-03-20 02:39:26,101 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2687 Valid, 1630 Invalid, 4930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [899 Valid, 4030 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-03-20 02:39:26,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7864 states. [2022-03-20 02:39:26,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7864 to 6946. [2022-03-20 02:39:26,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6946 states, 5542 states have (on average 1.453446409238542) internal successors, (8055), 5692 states have internal predecessors, (8055), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-20 02:39:26,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 10479 transitions. [2022-03-20 02:39:26,722 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 10479 transitions. Word has length 57 [2022-03-20 02:39:26,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:39:26,722 INFO L478 AbstractCegarLoop]: Abstraction has 6946 states and 10479 transitions. [2022-03-20 02:39:26,723 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 02:39:26,723 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 10479 transitions. [2022-03-20 02:39:26,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-20 02:39:26,724 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:39:26,724 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:39:26,724 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-20 02:39:26,724 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:39:26,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:39:26,724 INFO L85 PathProgramCache]: Analyzing trace with hash -466129244, now seen corresponding path program 1 times [2022-03-20 02:39:26,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:39:26,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140078577] [2022-03-20 02:39:26,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:39:26,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:39:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:26,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:39:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:27,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:39:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:27,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 02:39:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:27,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:39:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:27,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:39:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:27,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 02:39:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:39:27,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:39:27,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140078577] [2022-03-20 02:39:27,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140078577] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:39:27,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:39:27,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 02:39:27,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675666073] [2022-03-20 02:39:27,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:39:27,197 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 02:39:27,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:39:27,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 02:39:27,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-20 02:39:27,198 INFO L87 Difference]: Start difference. First operand 6946 states and 10479 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 02:39:34,550 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:39:42,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:39:42,233 INFO L93 Difference]: Finished difference Result 14677 states and 22415 transitions. [2022-03-20 02:39:42,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-20 02:39:42,234 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-03-20 02:39:42,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:39:42,265 INFO L225 Difference]: With dead ends: 14677 [2022-03-20 02:39:42,265 INFO L226 Difference]: Without dead ends: 8095 [2022-03-20 02:39:42,287 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2022-03-20 02:39:42,288 INFO L913 BasicCegarLoop]: 899 mSDtfsCounter, 5146 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 5496 mSolverCounterSat, 2202 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5190 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 7699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2202 IncrementalHoareTripleChecker+Valid, 5496 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-03-20 02:39:42,288 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5190 Valid, 1785 Invalid, 7699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2202 Valid, 5496 Invalid, 1 Unknown, 0 Unchecked, 12.1s Time] [2022-03-20 02:39:42,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8095 states. [2022-03-20 02:39:42,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8095 to 6937. [2022-03-20 02:39:42,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 5533 states have (on average 1.452015181637448) internal successors, (8034), 5683 states have internal predecessors, (8034), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-20 02:39:42,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10458 transitions. [2022-03-20 02:39:42,828 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10458 transitions. Word has length 56 [2022-03-20 02:39:42,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:39:42,828 INFO L478 AbstractCegarLoop]: Abstraction has 6937 states and 10458 transitions. [2022-03-20 02:39:42,828 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 02:39:42,828 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10458 transitions. [2022-03-20 02:39:42,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-20 02:39:42,829 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:39:42,830 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:39:42,830 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-20 02:39:42,830 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:39:42,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:39:42,830 INFO L85 PathProgramCache]: Analyzing trace with hash 2010817043, now seen corresponding path program 1 times [2022-03-20 02:39:42,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:39:42,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733923992] [2022-03-20 02:39:42,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:39:42,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:39:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:43,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:39:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:43,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:39:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:43,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 02:39:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:43,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:39:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:43,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:39:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:43,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 02:39:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:43,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-20 02:39:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:43,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:39:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:43,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:39:43,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:39:43,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733923992] [2022-03-20 02:39:43,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733923992] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:39:43,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:39:43,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 02:39:43,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278256455] [2022-03-20 02:39:43,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:39:43,458 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 02:39:43,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:39:43,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 02:39:43,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-20 02:39:43,467 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) [2022-03-20 02:39:51,203 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 [] [2022-03-20 02:39:56,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:39:56,920 INFO L93 Difference]: Finished difference Result 7820 states and 12070 transitions. [2022-03-20 02:39:56,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-20 02:39:56,920 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2022-03-20 02:39:56,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:39:56,955 INFO L225 Difference]: With dead ends: 7820 [2022-03-20 02:39:56,955 INFO L226 Difference]: Without dead ends: 7815 [2022-03-20 02:39:56,960 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2022-03-20 02:39:56,962 INFO L913 BasicCegarLoop]: 987 mSDtfsCounter, 3897 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 5217 mSolverCounterSat, 1807 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3947 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 7025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1807 IncrementalHoareTripleChecker+Valid, 5217 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-03-20 02:39:56,962 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3947 Valid, 1888 Invalid, 7025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1807 Valid, 5217 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2022-03-20 02:39:56,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7815 states. [2022-03-20 02:39:57,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7815 to 6937. [2022-03-20 02:39:57,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 5533 states have (on average 1.4518344478583047) internal successors, (8033), 5683 states have internal predecessors, (8033), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-20 02:39:57,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10457 transitions. [2022-03-20 02:39:57,509 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10457 transitions. Word has length 57 [2022-03-20 02:39:57,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:39:57,509 INFO L478 AbstractCegarLoop]: Abstraction has 6937 states and 10457 transitions. [2022-03-20 02:39:57,509 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 02:39:57,509 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10457 transitions. [2022-03-20 02:39:57,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-20 02:39:57,510 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:39:57,510 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:39:57,510 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-20 02:39:57,511 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:39:57,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:39:57,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1552244362, now seen corresponding path program 1 times [2022-03-20 02:39:57,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:39:57,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179899603] [2022-03-20 02:39:57,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:39:57,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:39:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:57,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:39:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:57,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:39:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:57,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 02:39:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:57,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:39:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:57,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:39:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:57,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 02:39:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:57,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 02:39:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:58,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:39:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:39:58,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:39:58,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:39:58,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179899603] [2022-03-20 02:39:58,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179899603] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:39:58,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:39:58,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 02:39:58,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941629629] [2022-03-20 02:39:58,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:39:58,009 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 02:39:58,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:39:58,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 02:39:58,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-20 02:39:58,010 INFO L87 Difference]: Start difference. First operand 6937 states and 10457 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 02:40:04,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:40:07,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:40:07,638 INFO L93 Difference]: Finished difference Result 14740 states and 22518 transitions. [2022-03-20 02:40:07,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-20 02:40:07,641 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 59 [2022-03-20 02:40:07,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:40:07,670 INFO L225 Difference]: With dead ends: 14740 [2022-03-20 02:40:07,670 INFO L226 Difference]: Without dead ends: 7831 [2022-03-20 02:40:07,689 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2022-03-20 02:40:07,689 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 2018 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 4538 mSolverCounterSat, 895 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 1887 SdHoareTripleChecker+Invalid, 5434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 895 IncrementalHoareTripleChecker+Valid, 4538 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-03-20 02:40:07,689 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2050 Valid, 1887 Invalid, 5434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [895 Valid, 4538 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2022-03-20 02:40:07,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7831 states. [2022-03-20 02:40:08,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7831 to 6937. [2022-03-20 02:40:08,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 5533 states have (on average 1.4516537140791614) internal successors, (8032), 5683 states have internal predecessors, (8032), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-20 02:40:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10456 transitions. [2022-03-20 02:40:08,271 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10456 transitions. Word has length 59 [2022-03-20 02:40:08,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:40:08,272 INFO L478 AbstractCegarLoop]: Abstraction has 6937 states and 10456 transitions. [2022-03-20 02:40:08,272 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 02:40:08,272 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10456 transitions. [2022-03-20 02:40:08,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-20 02:40:08,274 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:40:08,274 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:40:08,274 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-20 02:40:08,274 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:40:08,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:40:08,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1708625388, now seen corresponding path program 1 times [2022-03-20 02:40:08,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:40:08,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088847661] [2022-03-20 02:40:08,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:40:08,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:40:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:08,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:40:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:08,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:40:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:08,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 02:40:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:08,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:40:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:08,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:40:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:08,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-20 02:40:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:08,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-20 02:40:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:08,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:40:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:08,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:40:08,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:40:08,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088847661] [2022-03-20 02:40:08,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088847661] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 02:40:08,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 02:40:08,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 02:40:08,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241878100] [2022-03-20 02:40:08,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 02:40:08,844 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 02:40:08,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:40:08,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 02:40:08,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-03-20 02:40:08,845 INFO L87 Difference]: Start difference. First operand 6937 states and 10456 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 02:40:13,596 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:40:15,768 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:40:19,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:40:22,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:40:22,664 INFO L93 Difference]: Finished difference Result 14697 states and 22709 transitions. [2022-03-20 02:40:22,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-20 02:40:22,665 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2022-03-20 02:40:22,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:40:22,692 INFO L225 Difference]: With dead ends: 14697 [2022-03-20 02:40:22,692 INFO L226 Difference]: Without dead ends: 7729 [2022-03-20 02:40:22,718 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2022-03-20 02:40:22,721 INFO L913 BasicCegarLoop]: 700 mSDtfsCounter, 2336 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 3339 mSolverCounterSat, 1019 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2366 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 4361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 3339 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-03-20 02:40:22,721 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2366 Valid, 1526 Invalid, 4361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1019 Valid, 3339 Invalid, 3 Unknown, 0 Unchecked, 12.3s Time] [2022-03-20 02:40:22,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7729 states. [2022-03-20 02:40:23,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7729 to 6958. [2022-03-20 02:40:23,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6958 states, 5554 states have (on average 1.4499459848757652) internal successors, (8053), 5704 states have internal predecessors, (8053), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-20 02:40:23,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6958 states to 6958 states and 10477 transitions. [2022-03-20 02:40:23,410 INFO L78 Accepts]: Start accepts. Automaton has 6958 states and 10477 transitions. Word has length 62 [2022-03-20 02:40:23,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:40:23,410 INFO L478 AbstractCegarLoop]: Abstraction has 6958 states and 10477 transitions. [2022-03-20 02:40:23,410 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 02:40:23,410 INFO L276 IsEmpty]: Start isEmpty. Operand 6958 states and 10477 transitions. [2022-03-20 02:40:23,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-20 02:40:23,411 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:40:23,411 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:40:23,411 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-20 02:40:23,411 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:40:23,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:40:23,412 INFO L85 PathProgramCache]: Analyzing trace with hash -427353988, now seen corresponding path program 1 times [2022-03-20 02:40:23,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:40:23,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484980385] [2022-03-20 02:40:23,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:40:23,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:40:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:23,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:40:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:23,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:40:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:23,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 02:40:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:23,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 02:40:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:24,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:40:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:24,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-20 02:40:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:24,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-20 02:40:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:24,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:40:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:24,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:40:24,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:40:24,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484980385] [2022-03-20 02:40:24,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484980385] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 02:40:24,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151865060] [2022-03-20 02:40:24,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:40:24,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 02:40:24,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 02:40:24,116 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 02:40:24,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 02:40:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:25,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 2816 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-20 02:40:25,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 02:40:25,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:40:25,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 02:40:25,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:40:25,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151865060] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 02:40:25,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 02:40:25,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 18 [2022-03-20 02:40:25,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115711176] [2022-03-20 02:40:25,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 02:40:25,562 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-20 02:40:25,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:40:25,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-20 02:40:25,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-03-20 02:40:25,563 INFO L87 Difference]: Start difference. First operand 6958 states and 10477 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 10 states have internal predecessors, (80), 2 states have call successors, (24), 10 states have call predecessors, (24), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-20 02:40:32,992 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:40:38,772 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:40:42,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:40:42,563 INFO L93 Difference]: Finished difference Result 14742 states and 22756 transitions. [2022-03-20 02:40:42,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-20 02:40:42,563 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 10 states have internal predecessors, (80), 2 states have call successors, (24), 10 states have call predecessors, (24), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 63 [2022-03-20 02:40:42,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:40:42,587 INFO L225 Difference]: With dead ends: 14742 [2022-03-20 02:40:42,587 INFO L226 Difference]: Without dead ends: 7752 [2022-03-20 02:40:42,604 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=295, Invalid=895, Unknown=0, NotChecked=0, Total=1190 [2022-03-20 02:40:42,605 INFO L913 BasicCegarLoop]: 701 mSDtfsCounter, 1539 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 5361 mSolverCounterSat, 672 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 6035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 5361 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-03-20 02:40:42,605 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1569 Valid, 1868 Invalid, 6035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 5361 Invalid, 2 Unknown, 0 Unchecked, 14.6s Time] [2022-03-20 02:40:42,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7752 states. [2022-03-20 02:40:43,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7752 to 6981. [2022-03-20 02:40:43,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6981 states, 5577 states have (on average 1.4480903711672943) internal successors, (8076), 5727 states have internal predecessors, (8076), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-20 02:40:43,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6981 states to 6981 states and 10500 transitions. [2022-03-20 02:40:43,417 INFO L78 Accepts]: Start accepts. Automaton has 6981 states and 10500 transitions. Word has length 63 [2022-03-20 02:40:43,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:40:43,417 INFO L478 AbstractCegarLoop]: Abstraction has 6981 states and 10500 transitions. [2022-03-20 02:40:43,417 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 10 states have internal predecessors, (80), 2 states have call successors, (24), 10 states have call predecessors, (24), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-20 02:40:43,417 INFO L276 IsEmpty]: Start isEmpty. Operand 6981 states and 10500 transitions. [2022-03-20 02:40:43,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-20 02:40:43,418 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:40:43,418 INFO L499 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:40:43,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-20 02:40:43,629 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-20 02:40:43,630 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:40:43,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:40:43,630 INFO L85 PathProgramCache]: Analyzing trace with hash -626150932, now seen corresponding path program 2 times [2022-03-20 02:40:43,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:40:43,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297909655] [2022-03-20 02:40:43,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:40:43,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:40:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:43,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:40:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:43,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:40:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:44,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 02:40:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:44,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 02:40:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:44,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:40:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:44,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-20 02:40:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:44,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-20 02:40:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:44,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:40:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:40:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:40:44,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:40:44,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297909655] [2022-03-20 02:40:44,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297909655] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 02:40:44,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528907262] [2022-03-20 02:40:44,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 02:40:44,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 02:40:44,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 02:40:44,406 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 02:40:44,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 02:41:15,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 02:41:15,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 02:41:15,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 2861 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-20 02:41:15,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 02:41:15,562 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:41:15,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 02:41:16,121 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:41:16,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528907262] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 02:41:16,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 02:41:16,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8, 8] total 27 [2022-03-20 02:41:16,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110102708] [2022-03-20 02:41:16,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 02:41:16,122 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-20 02:41:16,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:41:16,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-20 02:41:16,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2022-03-20 02:41:16,123 INFO L87 Difference]: Start difference. First operand 6981 states and 10500 transitions. Second operand has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 19 states have internal predecessors, (89), 2 states have call successors, (24), 10 states have call predecessors, (24), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-20 02:41:26,293 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:41:28,429 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:41:35,871 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:41:40,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:41:40,982 INFO L93 Difference]: Finished difference Result 14908 states and 23005 transitions. [2022-03-20 02:41:40,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-20 02:41:40,983 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 19 states have internal predecessors, (89), 2 states have call successors, (24), 10 states have call predecessors, (24), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 66 [2022-03-20 02:41:40,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:41:41,005 INFO L225 Difference]: With dead ends: 14908 [2022-03-20 02:41:41,005 INFO L226 Difference]: Without dead ends: 7818 [2022-03-20 02:41:41,023 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=652, Invalid=2318, Unknown=0, NotChecked=0, Total=2970 [2022-03-20 02:41:41,024 INFO L913 BasicCegarLoop]: 703 mSDtfsCounter, 2078 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 6558 mSolverCounterSat, 923 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 7484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 923 IncrementalHoareTripleChecker+Valid, 6558 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2022-03-20 02:41:41,024 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2108 Valid, 2129 Invalid, 7484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [923 Valid, 6558 Invalid, 3 Unknown, 0 Unchecked, 20.3s Time] [2022-03-20 02:41:41,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7818 states. [2022-03-20 02:41:41,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7818 to 7047. [2022-03-20 02:41:41,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7047 states, 5643 states have (on average 1.442849548112706) internal successors, (8142), 5793 states have internal predecessors, (8142), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-20 02:41:41,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7047 states to 7047 states and 10566 transitions. [2022-03-20 02:41:41,693 INFO L78 Accepts]: Start accepts. Automaton has 7047 states and 10566 transitions. Word has length 66 [2022-03-20 02:41:41,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:41:41,694 INFO L478 AbstractCegarLoop]: Abstraction has 7047 states and 10566 transitions. [2022-03-20 02:41:41,694 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 19 states have internal predecessors, (89), 2 states have call successors, (24), 10 states have call predecessors, (24), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-20 02:41:41,694 INFO L276 IsEmpty]: Start isEmpty. Operand 7047 states and 10566 transitions. [2022-03-20 02:41:41,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-20 02:41:41,695 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:41:41,695 INFO L499 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:41:41,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 02:41:41,903 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-20 02:41:41,905 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:41:41,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:41:41,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1884366828, now seen corresponding path program 3 times [2022-03-20 02:41:41,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:41:41,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43386320] [2022-03-20 02:41:41,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:41:41,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:41:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:42,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:41:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:42,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:41:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:42,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 02:41:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:42,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-20 02:41:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:42,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:41:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:43,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-20 02:41:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:43,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-20 02:41:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:43,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:41:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:41:43,124 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:41:43,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:41:43,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43386320] [2022-03-20 02:41:43,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43386320] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 02:41:43,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742966071] [2022-03-20 02:41:43,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 02:41:43,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 02:41:43,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 02:41:43,126 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 02:41:43,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 02:48:11,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-20 02:48:11,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 02:48:11,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-20 02:48:11,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 02:48:11,949 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:48:11,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 02:48:13,243 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:48:13,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742966071] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 02:48:13,243 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 02:48:13,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 15, 14] total 46 [2022-03-20 02:48:13,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944984014] [2022-03-20 02:48:13,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 02:48:13,244 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-20 02:48:13,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:48:13,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-20 02:48:13,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=1687, Unknown=0, NotChecked=0, Total=2070 [2022-03-20 02:48:13,245 INFO L87 Difference]: Start difference. First operand 7047 states and 10566 transitions. Second operand has 46 states, 45 states have (on average 2.4) internal successors, (108), 38 states have internal predecessors, (108), 3 states have call successors, (25), 10 states have call predecessors, (25), 5 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-03-20 02:48:47,274 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:48:58,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 02:49:05,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 02:49:05,770 INFO L93 Difference]: Finished difference Result 15220 states and 23443 transitions. [2022-03-20 02:49:05,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-20 02:49:05,771 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.4) internal successors, (108), 38 states have internal predecessors, (108), 3 states have call successors, (25), 10 states have call predecessors, (25), 5 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 72 [2022-03-20 02:49:05,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 02:49:05,793 INFO L225 Difference]: With dead ends: 15220 [2022-03-20 02:49:05,793 INFO L226 Difference]: Without dead ends: 7950 [2022-03-20 02:49:05,810 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1483 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=1739, Invalid=7191, Unknown=0, NotChecked=0, Total=8930 [2022-03-20 02:49:05,810 INFO L913 BasicCegarLoop]: 705 mSDtfsCounter, 2021 mSDsluCounter, 2860 mSDsCounter, 0 mSdLazyCounter, 12742 mSolverCounterSat, 984 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 3565 SdHoareTripleChecker+Invalid, 13728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 984 IncrementalHoareTripleChecker+Valid, 12742 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.8s IncrementalHoareTripleChecker+Time [2022-03-20 02:49:05,811 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2050 Valid, 3565 Invalid, 13728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [984 Valid, 12742 Invalid, 2 Unknown, 0 Unchecked, 25.8s Time] [2022-03-20 02:49:05,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7950 states. [2022-03-20 02:49:06,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7950 to 7179. [2022-03-20 02:49:06,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7179 states, 5775 states have (on average 1.4327272727272726) internal successors, (8274), 5925 states have internal predecessors, (8274), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-20 02:49:06,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7179 states to 7179 states and 10698 transitions. [2022-03-20 02:49:06,602 INFO L78 Accepts]: Start accepts. Automaton has 7179 states and 10698 transitions. Word has length 72 [2022-03-20 02:49:06,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 02:49:06,602 INFO L478 AbstractCegarLoop]: Abstraction has 7179 states and 10698 transitions. [2022-03-20 02:49:06,602 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.4) internal successors, (108), 38 states have internal predecessors, (108), 3 states have call successors, (25), 10 states have call predecessors, (25), 5 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-03-20 02:49:06,602 INFO L276 IsEmpty]: Start isEmpty. Operand 7179 states and 10698 transitions. [2022-03-20 02:49:06,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-03-20 02:49:06,603 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 02:49:06,604 INFO L499 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 02:49:06,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-20 02:49:06,825 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 02:49:06,826 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 02:49:06,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 02:49:06,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1121545236, now seen corresponding path program 4 times [2022-03-20 02:49:06,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 02:49:06,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127771453] [2022-03-20 02:49:06,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 02:49:06,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 02:49:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:49:07,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 02:49:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:49:07,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 02:49:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:49:08,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-20 02:49:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:49:08,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-20 02:49:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:49:08,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:49:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:49:09,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-20 02:49:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:49:09,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-03-20 02:49:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:49:09,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 02:49:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 02:49:09,222 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:49:09,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 02:49:09,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127771453] [2022-03-20 02:49:09,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127771453] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 02:49:09,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264625913] [2022-03-20 02:49:09,222 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 02:49:09,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 02:49:09,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 02:49:09,224 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 02:49:09,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-20 02:49:13,686 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 02:49:13,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 02:49:13,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 3131 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-20 02:49:13,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 02:49:15,880 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:49:15,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 02:49:20,331 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 02:49:20,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264625913] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 02:49:20,331 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 02:49:20,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 26, 26] total 81 [2022-03-20 02:49:20,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854778471] [2022-03-20 02:49:20,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 02:49:20,332 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-03-20 02:49:20,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 02:49:20,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-03-20 02:49:20,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1317, Invalid=5163, Unknown=0, NotChecked=0, Total=6480 [2022-03-20 02:49:20,334 INFO L87 Difference]: Start difference. First operand 7179 states and 10698 transitions. Second operand has 81 states, 81 states have (on average 1.7654320987654322) internal successors, (143), 73 states have internal predecessors, (143), 2 states have call successors, (24), 10 states have call predecessors, (24), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-03-20 02:50:19,915 WARN L232 SmtUtils]: Spent 25.87s on a formula simplification. DAG size of input: 175 DAG size of output: 70 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 02:51:11,012 WARN L232 SmtUtils]: Spent 17.78s on a formula simplification. DAG size of input: 170 DAG size of output: 70 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)