/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 04:32:30,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 04:32:30,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 04:32:30,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-24 04:32:30,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-24 04:32:30,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-24 04:32:30,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-24 04:32:30,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-24 04:32:30,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-24 04:32:30,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-24 04:32:30,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-24 04:32:30,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-24 04:32:30,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-24 04:32:30,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-24 04:32:30,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-24 04:32:30,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-24 04:32:30,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-24 04:32:30,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-24 04:32:30,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-24 04:32:30,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-24 04:32:30,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-24 04:32:30,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-24 04:32:30,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-24 04:32:30,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-24 04:32:30,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-24 04:32:30,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-24 04:32:30,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-24 04:32:30,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-24 04:32:30,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-24 04:32:30,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-02-24 04:32:30,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 04:32:30,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 04:32:30,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 04:32:30,561 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-24 04:32:30,570 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 04:32:30,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 04:32:30,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 04:32:30,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 04:32:30,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 04:32:30,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 04:32:30,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 04:32:30,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 04:32:30,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 04:32:30,572 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 04:32:30,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 04:32:30,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 04:32:30,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 04:32:30,573 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 04:32:30,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 04:32:30,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 04:32:30,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 04:32:30,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 04:32:30,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 04:32:30,574 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-24 04:32:30,574 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 04:32:30,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 04:32:30,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 04:32:30,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 04:32:30,786 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 04:32:30,787 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 04:32:30,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c [2022-02-24 04:32:30,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8346158a3/5157826aa1a5471dae24fc2e2ba00fa7/FLAGe2bb4b537 [2022-02-24 04:32:31,441 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 04:32:31,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c [2022-02-24 04:32:31,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8346158a3/5157826aa1a5471dae24fc2e2ba00fa7/FLAGe2bb4b537 [2022-02-24 04:32:31,624 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8346158a3/5157826aa1a5471dae24fc2e2ba00fa7 [2022-02-24 04:32:31,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 04:32:31,627 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 04:32:31,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 04:32:31,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 04:32:31,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 04:32:31,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:32:31" (1/1) ... [2022-02-24 04:32:31,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7788a55e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:32:31, skipping insertion in model container [2022-02-24 04:32:31,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:32:31" (1/1) ... [2022-02-24 04:32:31,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 04:32:31,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 04:32:32,209 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c[77246,77259] [2022-02-24 04:32:32,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 04:32:32,597 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 04:32:32,631 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c[77246,77259] [2022-02-24 04:32:32,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 04:32:32,889 INFO L208 MainTranslator]: Completed translation [2022-02-24 04:32:32,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:32:32 WrapperNode [2022-02-24 04:32:32,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 04:32:32,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 04:32:32,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 04:32:32,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 04:32:32,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:32:32" (1/1) ... [2022-02-24 04:32:32,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:32:32" (1/1) ... [2022-02-24 04:32:32,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:32:32" (1/1) ... [2022-02-24 04:32:32,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:32:32" (1/1) ... [2022-02-24 04:32:33,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:32:32" (1/1) ... [2022-02-24 04:32:33,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:32:32" (1/1) ... [2022-02-24 04:32:33,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:32:32" (1/1) ... [2022-02-24 04:32:33,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 04:32:33,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 04:32:33,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 04:32:33,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 04:32:33,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:32:32" (1/1) ... [2022-02-24 04:32:33,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 04:32:33,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 04:32:33,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-24 04:32:33,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-24 04:32:33,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 04:32:33,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 04:32:33,199 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 04:32:33,199 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-02-24 04:32:33,199 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-02-24 04:32:33,199 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-02-24 04:32:33,199 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-02-24 04:32:33,199 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-02-24 04:32:33,199 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyUnload [2022-02-24 04:32:33,199 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyAddDevice [2022-02-24 04:32:33,200 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConfigCallBack [2022-02-24 04:32:33,200 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-02-24 04:32:33,200 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-02-24 04:32:33,200 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-02-24 04:32:33,200 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-02-24 04:32:33,200 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-02-24 04:32:33,200 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-02-24 04:32:33,201 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-02-24 04:32:33,201 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPower [2022-02-24 04:32:33,201 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyReadWrite [2022-02-24 04:32:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInterpretError [2022-02-24 04:32:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFinishOperation [2022-02-24 04:32:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure FlStartDrive [2022-02-24 04:32:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDatarateSpecifyConfigure [2022-02-24 04:32:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure FlRecalibrateDrive [2022-02-24 04:32:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDetermineMediaType [2022-02-24 04:32:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAllocateIoBuffer [2022-02-24 04:32:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFreeIoBuffer [2022-02-24 04:32:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyThread [2022-02-24 04:32:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConsolidateMediaTypeWithBootSector [2022-02-24 04:32:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckBootSector [2022-02-24 04:32:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWriteTrack [2022-02-24 04:32:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWrite [2022-02-24 04:32:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFormat [2022-02-24 04:32:33,202 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2022-02-24 04:32:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure FlIssueCommand [2022-02-24 04:32:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInitializeControllerHardware [2022-02-24 04:32:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-02-24 04:32:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure FlHdbit [2022-02-24 04:32:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-02-24 04:32:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCancelQueuedRequest [2022-02-24 04:32:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-02-24 04:32:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-02-24 04:32:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 04:32:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-02-24 04:32:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-02-24 04:32:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-02-24 04:32:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-02-24 04:32:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-02-24 04:32:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-02-24 04:32:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-02-24 04:32:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-02-24 04:32:33,204 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-02-24 04:32:33,204 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-02-24 04:32:33,204 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-02-24 04:32:33,204 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-02-24 04:32:33,204 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-02-24 04:32:33,204 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-02-24 04:32:33,204 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-02-24 04:32:33,204 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-02-24 04:32:33,204 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-02-24 04:32:33,204 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-02-24 04:32:33,204 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-02-24 04:32:33,204 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-02-24 04:32:33,204 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-02-24 04:32:33,204 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-02-24 04:32:33,204 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-02-24 04:32:33,204 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-02-24 04:32:33,205 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-02-24 04:32:33,205 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-02-24 04:32:33,205 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-02-24 04:32:33,205 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-02-24 04:32:33,205 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-02-24 04:32:33,205 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-02-24 04:32:33,205 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-02-24 04:32:33,205 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-02-24 04:32:33,206 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-02-24 04:32:33,206 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-02-24 04:32:33,206 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-02-24 04:32:33,206 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-02-24 04:32:33,206 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-02-24 04:32:33,206 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-02-24 04:32:33,206 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-02-24 04:32:33,206 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-02-24 04:32:33,207 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-02-24 04:32:33,207 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-02-24 04:32:33,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-02-24 04:32:33,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-02-24 04:32:33,207 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-02-24 04:32:33,207 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-02-24 04:32:33,208 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-02-24 04:32:33,208 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-02-24 04:32:33,208 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-02-24 04:32:33,208 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-02-24 04:32:33,208 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-02-24 04:32:33,208 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-02-24 04:32:33,208 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-02-24 04:32:33,208 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-02-24 04:32:33,208 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-02-24 04:32:33,254 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-02-24 04:32:33,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-02-24 04:32:33,254 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-02-24 04:32:33,254 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-02-24 04:32:33,254 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-02-24 04:32:33,254 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 04:32:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 04:32:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 04:32:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 04:32:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-02-24 04:32:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-24 04:32:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-24 04:32:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-24 04:32:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-02-24 04:32:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2022-02-24 04:32:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure swprintf [2022-02-24 04:32:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-02-24 04:32:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-02-24 04:32:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-02-24 04:32:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-02-24 04:32:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-02-24 04:32:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-02-24 04:32:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-02-24 04:32:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-02-24 04:32:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-02-24 04:32:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-02-24 04:32:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-02-24 04:32:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-02-24 04:32:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 04:32:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 04:32:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-02-24 04:32:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-02-24 04:32:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-02-24 04:32:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-02-24 04:32:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-02-24 04:32:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-02-24 04:32:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-02-24 04:32:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-02-24 04:32:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-02-24 04:32:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-02-24 04:32:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-02-24 04:32:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-02-24 04:32:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-02-24 04:32:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-02-24 04:32:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-02-24 04:32:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-02-24 04:32:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-02-24 04:32:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-02-24 04:32:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-02-24 04:32:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-02-24 04:32:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-02-24 04:32:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-02-24 04:32:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-02-24 04:32:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-02-24 04:32:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-02-24 04:32:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-02-24 04:32:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-02-24 04:32:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-02-24 04:32:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-02-24 04:32:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-02-24 04:32:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-02-24 04:32:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-02-24 04:32:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-02-24 04:32:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-02-24 04:32:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-02-24 04:32:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-02-24 04:32:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-02-24 04:32:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-02-24 04:32:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-02-24 04:32:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-02-24 04:32:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-02-24 04:32:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-02-24 04:32:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-02-24 04:32:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-02-24 04:32:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-02-24 04:32:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-02-24 04:32:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-02-24 04:32:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-02-24 04:32:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyUnload [2022-02-24 04:32:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure FlConfigCallBack [2022-02-24 04:32:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure FlInitializeControllerHardware [2022-02-24 04:32:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-02-24 04:32:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-02-24 04:32:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyReadWrite [2022-02-24 04:32:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure FlRecalibrateDrive [2022-02-24 04:32:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure FlDatarateSpecifyConfigure [2022-02-24 04:32:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure FlStartDrive [2022-02-24 04:32:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure FlFinishOperation [2022-02-24 04:32:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure FlDetermineMediaType [2022-02-24 04:32:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyThread [2022-02-24 04:32:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWrite [2022-02-24 04:32:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure FlFormat [2022-02-24 04:32:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure FlIssueCommand [2022-02-24 04:32:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2022-02-24 04:32:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-02-24 04:32:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure FlInterpretError [2022-02-24 04:32:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure FlAllocateIoBuffer [2022-02-24 04:32:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure FlFreeIoBuffer [2022-02-24 04:32:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure FlConsolidateMediaTypeWithBootSector [2022-02-24 04:32:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckBootSector [2022-02-24 04:32:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWriteTrack [2022-02-24 04:32:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-02-24 04:32:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyAddDevice [2022-02-24 04:32:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-02-24 04:32:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPower [2022-02-24 04:32:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-02-24 04:32:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-02-24 04:32:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-02-24 04:32:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-02-24 04:32:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCancelQueuedRequest [2022-02-24 04:32:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-02-24 04:32:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure FlHdbit [2022-02-24 04:32:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-02-24 04:32:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-02-24 04:32:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-02-24 04:32:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-02-24 04:32:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-24 04:32:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 04:32:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-02-24 04:32:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-02-24 04:32:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-02-24 04:32:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-02-24 04:32:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-02-24 04:32:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 04:32:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-02-24 04:32:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-02-24 04:32:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 04:32:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 04:32:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 04:32:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-02-24 04:32:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-02-24 04:32:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-02-24 04:32:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-02-24 04:32:33,846 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 04:32:33,848 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 04:32:33,893 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:33,938 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:33,938 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:33,939 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:33,959 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:33,959 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:36,588 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:36,592 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:36,592 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:36,593 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:36,599 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:36,599 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:36,602 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:36,612 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:36,612 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:36,648 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:36,653 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:36,654 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:36,654 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:36,664 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:36,664 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:36,665 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:36,673 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:36,673 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:36,722 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:36,797 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-02-24 04:32:36,797 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-02-24 04:32:36,876 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:36,880 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:36,881 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:36,881 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:36,884 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:36,884 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:36,884 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:36,894 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:36,895 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:36,903 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:36,909 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:36,911 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:36,911 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:36,920 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:36,920 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:44,920 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:44,936 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-24 04:32:44,936 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-24 04:32:44,987 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:45,501 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-02-24 04:32:45,501 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-02-24 04:32:45,761 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:45,765 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:45,765 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:45,827 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:45,851 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-02-24 04:32:45,851 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-02-24 04:32:45,854 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:45,981 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-02-24 04:32:45,982 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-02-24 04:32:45,982 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:46,041 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-02-24 04:32:46,041 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-02-24 04:32:56,947 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:56,950 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:56,950 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:57,062 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:57,065 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:57,065 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:57,081 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:59,440 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-02-24 04:32:59,440 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-02-24 04:32:59,478 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:59,736 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-02-24 04:32:59,736 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-02-24 04:32:59,737 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:59,751 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-24 04:32:59,751 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-24 04:32:59,751 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:59,779 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-02-24 04:32:59,779 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-02-24 04:32:59,781 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:59,789 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-02-24 04:32:59,789 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-02-24 04:32:59,825 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:59,829 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:59,829 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:59,838 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:59,842 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-24 04:32:59,842 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-24 04:32:59,843 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:32:59,906 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume !false; [2022-02-24 04:32:59,907 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume false; [2022-02-24 04:32:59,948 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-24 04:33:02,297 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2022-02-24 04:33:02,297 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2022-02-24 04:33:02,323 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 04:33:02,343 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 04:33:02,344 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2022-02-24 04:33:02,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:33:02 BoogieIcfgContainer [2022-02-24 04:33:02,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 04:33:02,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 04:33:02,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 04:33:02,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 04:33:02,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:32:31" (1/3) ... [2022-02-24 04:33:02,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675bb5ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:33:02, skipping insertion in model container [2022-02-24 04:33:02,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:32:32" (2/3) ... [2022-02-24 04:33:02,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675bb5ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:33:02, skipping insertion in model container [2022-02-24 04:33:02,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:33:02" (3/3) ... [2022-02-24 04:33:02,358 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-3.c [2022-02-24 04:33:02,361 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 04:33:02,361 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 04:33:02,392 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 04:33:02,397 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=QVASR [2022-02-24 04:33:02,398 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 04:33:02,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 1463 states, 1158 states have (on average 1.5215889464594128) internal successors, (1762), 1199 states have internal predecessors, (1762), 227 states have call successors, (227), 73 states have call predecessors, (227), 73 states have return successors, (227), 221 states have call predecessors, (227), 227 states have call successors, (227) [2022-02-24 04:33:02,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-24 04:33:02,441 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:33:02,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:33:02,442 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:33:02,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:33:02,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1208806804, now seen corresponding path program 1 times [2022-02-24 04:33:02,451 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:33:02,452 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243570701] [2022-02-24 04:33:02,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:33:02,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:33:02,569 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:33:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:03,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:33:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:03,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:33:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:03,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:33:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:03,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:33:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:03,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:33:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:03,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:33:03,432 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:33:03,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243570701] [2022-02-24 04:33:03,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1243570701] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:33:03,433 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:33:03,434 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-24 04:33:03,434 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219954203] [2022-02-24 04:33:03,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:33:03,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 04:33:03,437 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:33:03,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 04:33:03,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-24 04:33:03,457 INFO L87 Difference]: Start difference. First operand has 1463 states, 1158 states have (on average 1.5215889464594128) internal successors, (1762), 1199 states have internal predecessors, (1762), 227 states have call successors, (227), 73 states have call predecessors, (227), 73 states have return successors, (227), 221 states have call predecessors, (227), 227 states have call successors, (227) Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 04:33:08,941 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:11,003 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:13,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:18,056 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:19,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:33:19,591 INFO L93 Difference]: Finished difference Result 1453 states and 2231 transitions. [2022-02-24 04:33:19,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 04:33:19,594 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2022-02-24 04:33:19,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:33:19,615 INFO L225 Difference]: With dead ends: 1453 [2022-02-24 04:33:19,616 INFO L226 Difference]: Without dead ends: 858 [2022-02-24 04:33:19,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-02-24 04:33:19,632 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 1345 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 3099 mSolverCounterSat, 617 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 3720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 3099 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:33:19,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1379 Valid, 1283 Invalid, 3720 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [617 Valid, 3099 Invalid, 4 Unknown, 0 Unchecked, 15.0s Time] [2022-02-24 04:33:19,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2022-02-24 04:33:19,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 670. [2022-02-24 04:33:19,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 502 states have (on average 1.4203187250996017) internal successors, (713), 534 states have internal predecessors, (713), 121 states have call successors, (121), 48 states have call predecessors, (121), 46 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-02-24 04:33:19,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 931 transitions. [2022-02-24 04:33:19,774 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 931 transitions. Word has length 37 [2022-02-24 04:33:19,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:33:19,774 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 931 transitions. [2022-02-24 04:33:19,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-24 04:33:19,774 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 931 transitions. [2022-02-24 04:33:19,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-24 04:33:19,776 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:33:19,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:33:19,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 04:33:19,776 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:33:19,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:33:19,777 INFO L85 PathProgramCache]: Analyzing trace with hash 171558063, now seen corresponding path program 1 times [2022-02-24 04:33:19,777 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:33:19,777 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579400528] [2022-02-24 04:33:19,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:33:19,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:33:19,790 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:33:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:20,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:33:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:20,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:33:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:20,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:33:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:20,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:33:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:20,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:33:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:20,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:33:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:20,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:33:20,321 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:33:20,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579400528] [2022-02-24 04:33:20,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1579400528] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:33:20,322 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:33:20,322 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 04:33:20,322 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556152048] [2022-02-24 04:33:20,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:33:20,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 04:33:20,323 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:33:20,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 04:33:20,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-24 04:33:20,324 INFO L87 Difference]: Start difference. First operand 670 states and 931 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 04:33:25,309 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:27,440 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:31,837 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:34,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:38,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:33:38,630 INFO L93 Difference]: Finished difference Result 1951 states and 2856 transitions. [2022-02-24 04:33:38,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 04:33:38,637 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2022-02-24 04:33:38,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:33:38,645 INFO L225 Difference]: With dead ends: 1951 [2022-02-24 04:33:38,646 INFO L226 Difference]: Without dead ends: 1471 [2022-02-24 04:33:38,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-02-24 04:33:38,648 INFO L933 BasicCegarLoop]: 939 mSDtfsCounter, 3479 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 3500 mSolverCounterSat, 1403 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3520 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 4907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1403 IncrementalHoareTripleChecker+Valid, 3500 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2022-02-24 04:33:38,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3520 Valid, 1663 Invalid, 4907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1403 Valid, 3500 Invalid, 4 Unknown, 0 Unchecked, 17.1s Time] [2022-02-24 04:33:38,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2022-02-24 04:33:38,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1230. [2022-02-24 04:33:38,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 946 states have (on average 1.4038054968287526) internal successors, (1328), 977 states have internal predecessors, (1328), 187 states have call successors, (187), 83 states have call predecessors, (187), 96 states have return successors, (247), 179 states have call predecessors, (247), 171 states have call successors, (247) [2022-02-24 04:33:38,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1762 transitions. [2022-02-24 04:33:38,837 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1762 transitions. Word has length 42 [2022-02-24 04:33:38,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:33:38,837 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 1762 transitions. [2022-02-24 04:33:38,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 04:33:38,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1762 transitions. [2022-02-24 04:33:38,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-24 04:33:38,840 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:33:38,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:33:38,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 04:33:38,840 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:33:38,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:33:38,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1220689, now seen corresponding path program 1 times [2022-02-24 04:33:38,841 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:33:38,841 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428666152] [2022-02-24 04:33:38,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:33:38,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:33:38,852 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:33:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:39,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:33:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:39,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:33:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:39,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:33:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:39,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:33:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:39,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:33:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:39,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:33:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:39,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-24 04:33:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:39,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:33:39,383 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:33:39,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428666152] [2022-02-24 04:33:39,383 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [428666152] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:33:39,383 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:33:39,383 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 04:33:39,384 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391793372] [2022-02-24 04:33:39,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:33:39,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 04:33:39,384 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:33:39,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 04:33:39,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-24 04:33:39,385 INFO L87 Difference]: Start difference. First operand 1230 states and 1762 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 04:33:45,740 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:48,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:51,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:33:51,578 INFO L93 Difference]: Finished difference Result 2279 states and 3379 transitions. [2022-02-24 04:33:51,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 04:33:51,579 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2022-02-24 04:33:51,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:33:51,589 INFO L225 Difference]: With dead ends: 2279 [2022-02-24 04:33:51,589 INFO L226 Difference]: Without dead ends: 2260 [2022-02-24 04:33:51,590 INFO L932 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 [2022-02-24 04:33:51,592 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 3868 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 2853 mSolverCounterSat, 1489 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3928 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 4344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1489 IncrementalHoareTripleChecker+Valid, 2853 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-02-24 04:33:51,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3928 Valid, 1301 Invalid, 4344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1489 Valid, 2853 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2022-02-24 04:33:51,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2022-02-24 04:33:51,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 1905. [2022-02-24 04:33:51,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1476 states have (on average 1.420731707317073) internal successors, (2097), 1527 states have internal predecessors, (2097), 279 states have call successors, (279), 129 states have call predecessors, (279), 149 states have return successors, (393), 262 states have call predecessors, (393), 263 states have call successors, (393) [2022-02-24 04:33:51,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2769 transitions. [2022-02-24 04:33:51,830 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2769 transitions. Word has length 54 [2022-02-24 04:33:51,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:33:51,832 INFO L470 AbstractCegarLoop]: Abstraction has 1905 states and 2769 transitions. [2022-02-24 04:33:51,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-24 04:33:51,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2769 transitions. [2022-02-24 04:33:51,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-24 04:33:51,838 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:33:51,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:33:51,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-24 04:33:51,839 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:33:51,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:33:51,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1955103331, now seen corresponding path program 1 times [2022-02-24 04:33:51,841 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:33:51,843 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119725856] [2022-02-24 04:33:51,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:33:51,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:33:51,856 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:33:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:52,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:33:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:52,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:33:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:52,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:33:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:52,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:33:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:52,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:33:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:52,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:33:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:33:52,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:33:52,355 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:33:52,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119725856] [2022-02-24 04:33:52,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1119725856] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:33:52,355 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:33:52,356 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 04:33:52,356 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265548556] [2022-02-24 04:33:52,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:33:52,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 04:33:52,356 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:33:52,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 04:33:52,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-24 04:33:52,357 INFO L87 Difference]: Start difference. First operand 1905 states and 2769 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 04:33:56,856 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:33:58,942 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:01,025 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:05,672 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:07,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:34:07,940 INFO L93 Difference]: Finished difference Result 2254 states and 3363 transitions. [2022-02-24 04:34:07,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 04:34:07,941 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-02-24 04:34:07,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:34:07,950 INFO L225 Difference]: With dead ends: 2254 [2022-02-24 04:34:07,950 INFO L226 Difference]: Without dead ends: 2250 [2022-02-24 04:34:07,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-02-24 04:34:07,953 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 1720 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 3118 mSolverCounterSat, 754 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 3876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 754 IncrementalHoareTripleChecker+Valid, 3118 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:34:07,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 1278 Invalid, 3876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [754 Valid, 3118 Invalid, 4 Unknown, 0 Unchecked, 14.6s Time] [2022-02-24 04:34:07,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2022-02-24 04:34:08,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 1942. [2022-02-24 04:34:08,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1509 states have (on average 1.420808482438701) internal successors, (2144), 1557 states have internal predecessors, (2144), 281 states have call successors, (281), 132 states have call predecessors, (281), 151 states have return successors, (395), 264 states have call predecessors, (395), 265 states have call successors, (395) [2022-02-24 04:34:08,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 2820 transitions. [2022-02-24 04:34:08,181 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 2820 transitions. Word has length 55 [2022-02-24 04:34:08,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:34:08,182 INFO L470 AbstractCegarLoop]: Abstraction has 1942 states and 2820 transitions. [2022-02-24 04:34:08,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 04:34:08,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 2820 transitions. [2022-02-24 04:34:08,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-24 04:34:08,183 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:34:08,183 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:34:08,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-24 04:34:08,183 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:34:08,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:34:08,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1599289490, now seen corresponding path program 1 times [2022-02-24 04:34:08,184 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:34:08,184 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212187473] [2022-02-24 04:34:08,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:34:08,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:34:08,193 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:34:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:08,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:34:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:08,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:34:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:08,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:34:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:08,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:34:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:08,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:34:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:08,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:34:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:08,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:34:08,691 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:34:08,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212187473] [2022-02-24 04:34:08,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [212187473] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:34:08,691 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:34:08,691 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-24 04:34:08,691 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264602618] [2022-02-24 04:34:08,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:34:08,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-24 04:34:08,691 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:34:08,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-24 04:34:08,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-24 04:34:08,692 INFO L87 Difference]: Start difference. First operand 1942 states and 2820 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 04:34:16,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:21,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:34:21,581 INFO L93 Difference]: Finished difference Result 3881 states and 5849 transitions. [2022-02-24 04:34:21,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 04:34:21,581 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-02-24 04:34:21,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:34:21,598 INFO L225 Difference]: With dead ends: 3881 [2022-02-24 04:34:21,598 INFO L226 Difference]: Without dead ends: 3878 [2022-02-24 04:34:21,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-02-24 04:34:21,601 INFO L933 BasicCegarLoop]: 1152 mSDtfsCounter, 2146 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 4385 mSolverCounterSat, 911 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2192 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 5297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 911 IncrementalHoareTripleChecker+Valid, 4385 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-02-24 04:34:21,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2192 Valid, 1872 Invalid, 5297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [911 Valid, 4385 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2022-02-24 04:34:21,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2022-02-24 04:34:22,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3105. [2022-02-24 04:34:22,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3105 states, 2444 states have (on average 1.4320785597381342) internal successors, (3500), 2499 states have internal predecessors, (3500), 415 states have call successors, (415), 218 states have call predecessors, (415), 245 states have return successors, (609), 399 states have call predecessors, (609), 399 states have call successors, (609) [2022-02-24 04:34:22,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3105 states to 3105 states and 4524 transitions. [2022-02-24 04:34:22,054 INFO L78 Accepts]: Start accepts. Automaton has 3105 states and 4524 transitions. Word has length 55 [2022-02-24 04:34:22,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:34:22,056 INFO L470 AbstractCegarLoop]: Abstraction has 3105 states and 4524 transitions. [2022-02-24 04:34:22,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-24 04:34:22,056 INFO L276 IsEmpty]: Start isEmpty. Operand 3105 states and 4524 transitions. [2022-02-24 04:34:22,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-24 04:34:22,058 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:34:22,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:34:22,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-24 04:34:22,059 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:34:22,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:34:22,059 INFO L85 PathProgramCache]: Analyzing trace with hash 2095199445, now seen corresponding path program 1 times [2022-02-24 04:34:22,059 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:34:22,059 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3806959] [2022-02-24 04:34:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:34:22,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:34:22,070 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:34:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:22,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:34:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:22,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:34:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:22,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:34:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:22,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:34:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:22,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:34:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:22,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:34:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:22,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:34:22,603 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:34:22,603 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3806959] [2022-02-24 04:34:22,603 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [3806959] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:34:22,603 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:34:22,603 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 04:34:22,603 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859271533] [2022-02-24 04:34:22,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:34:22,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 04:34:22,604 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:34:22,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 04:34:22,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-02-24 04:34:22,605 INFO L87 Difference]: Start difference. First operand 3105 states and 4524 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-24 04:34:28,685 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:33,029 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:41,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:34:41,250 INFO L93 Difference]: Finished difference Result 6653 states and 9861 transitions. [2022-02-24 04:34:41,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-24 04:34:41,250 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-02-24 04:34:41,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:34:41,266 INFO L225 Difference]: With dead ends: 6653 [2022-02-24 04:34:41,266 INFO L226 Difference]: Without dead ends: 3833 [2022-02-24 04:34:41,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2022-02-24 04:34:41,275 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 5008 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 6694 mSolverCounterSat, 2196 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5053 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 8892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2196 IncrementalHoareTripleChecker+Valid, 6694 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-02-24 04:34:41,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5053 Valid, 2055 Invalid, 8892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2196 Valid, 6694 Invalid, 2 Unknown, 0 Unchecked, 15.7s Time] [2022-02-24 04:34:41,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2022-02-24 04:34:41,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 3099. [2022-02-24 04:34:41,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3099 states, 2438 states have (on average 1.4298605414273995) internal successors, (3486), 2493 states have internal predecessors, (3486), 415 states have call successors, (415), 218 states have call predecessors, (415), 245 states have return successors, (609), 399 states have call predecessors, (609), 399 states have call successors, (609) [2022-02-24 04:34:41,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 4510 transitions. [2022-02-24 04:34:41,756 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 4510 transitions. Word has length 56 [2022-02-24 04:34:41,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:34:41,756 INFO L470 AbstractCegarLoop]: Abstraction has 3099 states and 4510 transitions. [2022-02-24 04:34:41,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-24 04:34:41,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 4510 transitions. [2022-02-24 04:34:41,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-24 04:34:41,758 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:34:41,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:34:41,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-24 04:34:41,758 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:34:41,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:34:41,758 INFO L85 PathProgramCache]: Analyzing trace with hash 2082718779, now seen corresponding path program 1 times [2022-02-24 04:34:41,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:34:41,759 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794309648] [2022-02-24 04:34:41,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:34:41,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:34:41,771 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:34:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:41,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:34:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:42,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:34:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:42,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:34:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:42,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:34:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:42,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:34:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:42,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:34:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:42,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-24 04:34:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:42,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:34:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:42,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:34:42,324 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:34:42,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794309648] [2022-02-24 04:34:42,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1794309648] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:34:42,324 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:34:42,324 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 04:34:42,324 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856696366] [2022-02-24 04:34:42,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:34:42,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 04:34:42,324 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:34:42,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 04:34:42,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-24 04:34:42,325 INFO L87 Difference]: Start difference. First operand 3099 states and 4510 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-24 04:34:47,623 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:52,644 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:34:58,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:34:58,356 INFO L93 Difference]: Finished difference Result 4462 states and 6724 transitions. [2022-02-24 04:34:58,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-24 04:34:58,357 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 56 [2022-02-24 04:34:58,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:34:58,377 INFO L225 Difference]: With dead ends: 4462 [2022-02-24 04:34:58,378 INFO L226 Difference]: Without dead ends: 4457 [2022-02-24 04:34:58,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2022-02-24 04:34:58,381 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 2954 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 4421 mSolverCounterSat, 1423 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2988 SdHoareTripleChecker+Valid, 2028 SdHoareTripleChecker+Invalid, 5846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1423 IncrementalHoareTripleChecker+Valid, 4421 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-02-24 04:34:58,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2988 Valid, 2028 Invalid, 5846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1423 Valid, 4421 Invalid, 2 Unknown, 0 Unchecked, 14.2s Time] [2022-02-24 04:34:58,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4457 states. [2022-02-24 04:34:58,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4457 to 3755. [2022-02-24 04:34:58,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 2956 states have (on average 1.4336941813261164) internal successors, (4238), 3023 states have internal predecessors, (4238), 500 states have call successors, (500), 258 states have call predecessors, (500), 298 states have return successors, (751), 491 states have call predecessors, (751), 484 states have call successors, (751) [2022-02-24 04:34:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5489 transitions. [2022-02-24 04:34:59,002 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5489 transitions. Word has length 56 [2022-02-24 04:34:59,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:34:59,003 INFO L470 AbstractCegarLoop]: Abstraction has 3755 states and 5489 transitions. [2022-02-24 04:34:59,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-24 04:34:59,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5489 transitions. [2022-02-24 04:34:59,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-24 04:34:59,004 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:34:59,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:34:59,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-24 04:34:59,004 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:34:59,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:34:59,005 INFO L85 PathProgramCache]: Analyzing trace with hash 590370335, now seen corresponding path program 1 times [2022-02-24 04:34:59,005 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:34:59,005 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871889007] [2022-02-24 04:34:59,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:34:59,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:34:59,015 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:34:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:59,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:34:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:59,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:34:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:59,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:34:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:59,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:34:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:59,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:34:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:59,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:34:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:59,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-24 04:34:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:59,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:34:59,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:34:59,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:34:59,595 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:34:59,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871889007] [2022-02-24 04:34:59,596 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1871889007] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:34:59,596 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:34:59,596 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 04:34:59,596 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230132996] [2022-02-24 04:34:59,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:34:59,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 04:34:59,596 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:34:59,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 04:34:59,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:34:59,597 INFO L87 Difference]: Start difference. First operand 3755 states and 5489 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:35:05,643 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:07,752 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:12,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:18,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:35:18,233 INFO L93 Difference]: Finished difference Result 4457 states and 6713 transitions. [2022-02-24 04:35:18,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-24 04:35:18,234 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2022-02-24 04:35:18,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:35:18,250 INFO L225 Difference]: With dead ends: 4457 [2022-02-24 04:35:18,250 INFO L226 Difference]: Without dead ends: 4451 [2022-02-24 04:35:18,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2022-02-24 04:35:18,252 INFO L933 BasicCegarLoop]: 1033 mSDtfsCounter, 4616 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 4430 mSolverCounterSat, 2199 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4666 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 6632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2199 IncrementalHoareTripleChecker+Valid, 4430 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-02-24 04:35:18,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4666 Valid, 1836 Invalid, 6632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2199 Valid, 4430 Invalid, 3 Unknown, 0 Unchecked, 15.4s Time] [2022-02-24 04:35:18,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2022-02-24 04:35:18,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 3755. [2022-02-24 04:35:18,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 2956 states have (on average 1.4333558863328824) internal successors, (4237), 3023 states have internal predecessors, (4237), 500 states have call successors, (500), 258 states have call predecessors, (500), 298 states have return successors, (751), 491 states have call predecessors, (751), 484 states have call successors, (751) [2022-02-24 04:35:18,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5488 transitions. [2022-02-24 04:35:18,886 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5488 transitions. Word has length 57 [2022-02-24 04:35:18,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:35:18,887 INFO L470 AbstractCegarLoop]: Abstraction has 3755 states and 5488 transitions. [2022-02-24 04:35:18,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:35:18,887 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5488 transitions. [2022-02-24 04:35:18,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-24 04:35:18,888 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:35:18,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:35:18,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-24 04:35:18,889 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:35:18,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:35:18,889 INFO L85 PathProgramCache]: Analyzing trace with hash 259939624, now seen corresponding path program 1 times [2022-02-24 04:35:18,889 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:35:18,889 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071192460] [2022-02-24 04:35:18,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:35:18,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:35:18,900 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:35:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:19,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:35:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:19,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:35:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:19,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:35:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:19,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:35:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:19,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:35:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:19,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:35:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:19,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-24 04:35:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:19,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:35:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:19,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:35:19,435 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:35:19,435 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071192460] [2022-02-24 04:35:19,435 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1071192460] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:35:19,435 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:35:19,436 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 04:35:19,436 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918421902] [2022-02-24 04:35:19,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:35:19,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 04:35:19,437 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:35:19,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 04:35:19,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:35:19,437 INFO L87 Difference]: Start difference. First operand 3755 states and 5488 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:35:28,314 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:34,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:35:34,315 INFO L93 Difference]: Finished difference Result 4453 states and 6707 transitions. [2022-02-24 04:35:34,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-24 04:35:34,316 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2022-02-24 04:35:34,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:35:34,329 INFO L225 Difference]: With dead ends: 4453 [2022-02-24 04:35:34,330 INFO L226 Difference]: Without dead ends: 4447 [2022-02-24 04:35:34,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2022-02-24 04:35:34,331 INFO L933 BasicCegarLoop]: 1031 mSDtfsCounter, 4047 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 4974 mSolverCounterSat, 1939 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4097 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 6914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1939 IncrementalHoareTripleChecker+Valid, 4974 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-02-24 04:35:34,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4097 Valid, 1932 Invalid, 6914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1939 Valid, 4974 Invalid, 1 Unknown, 0 Unchecked, 11.7s Time] [2022-02-24 04:35:34,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4447 states. [2022-02-24 04:35:34,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4447 to 3755. [2022-02-24 04:35:35,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 2956 states have (on average 1.4330175913396481) internal successors, (4236), 3023 states have internal predecessors, (4236), 500 states have call successors, (500), 258 states have call predecessors, (500), 298 states have return successors, (751), 491 states have call predecessors, (751), 484 states have call successors, (751) [2022-02-24 04:35:35,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5487 transitions. [2022-02-24 04:35:35,019 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5487 transitions. Word has length 58 [2022-02-24 04:35:35,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:35:35,019 INFO L470 AbstractCegarLoop]: Abstraction has 3755 states and 5487 transitions. [2022-02-24 04:35:35,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:35:35,020 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5487 transitions. [2022-02-24 04:35:35,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-24 04:35:35,021 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:35:35,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:35:35,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-24 04:35:35,022 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:35:35,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:35:35,022 INFO L85 PathProgramCache]: Analyzing trace with hash -449310488, now seen corresponding path program 1 times [2022-02-24 04:35:35,022 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:35:35,022 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226109817] [2022-02-24 04:35:35,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:35:35,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:35:35,054 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:35:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:35,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:35:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:35,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:35:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:35,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:35:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:35,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:35:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:35,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:35:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:35,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:35:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:35,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-24 04:35:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:35,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:35:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:35:35,601 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:35:35,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226109817] [2022-02-24 04:35:35,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1226109817] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:35:35,602 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:35:35,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 04:35:35,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980901080] [2022-02-24 04:35:35,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:35:35,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 04:35:35,602 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:35:35,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 04:35:35,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:35:35,603 INFO L87 Difference]: Start difference. First operand 3755 states and 5487 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-24 04:35:44,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:48,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:35:48,099 INFO L93 Difference]: Finished difference Result 4464 states and 6725 transitions. [2022-02-24 04:35:48,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 04:35:48,100 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 59 [2022-02-24 04:35:48,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:35:48,117 INFO L225 Difference]: With dead ends: 4464 [2022-02-24 04:35:48,117 INFO L226 Difference]: Without dead ends: 4447 [2022-02-24 04:35:48,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-02-24 04:35:48,125 INFO L933 BasicCegarLoop]: 735 mSDtfsCounter, 1847 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 5233 mSolverCounterSat, 824 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 1980 SdHoareTripleChecker+Invalid, 6058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 824 IncrementalHoareTripleChecker+Valid, 5233 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:35:48,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1886 Valid, 1980 Invalid, 6058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [824 Valid, 5233 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2022-02-24 04:35:48,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4447 states. [2022-02-24 04:35:48,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4447 to 3753. [2022-02-24 04:35:48,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3753 states, 2955 states have (on average 1.4328257191201355) internal successors, (4234), 3022 states have internal predecessors, (4234), 499 states have call successors, (499), 258 states have call predecessors, (499), 298 states have return successors, (750), 490 states have call predecessors, (750), 483 states have call successors, (750) [2022-02-24 04:35:48,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3753 states to 3753 states and 5483 transitions. [2022-02-24 04:35:48,770 INFO L78 Accepts]: Start accepts. Automaton has 3753 states and 5483 transitions. Word has length 59 [2022-02-24 04:35:48,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:35:48,770 INFO L470 AbstractCegarLoop]: Abstraction has 3753 states and 5483 transitions. [2022-02-24 04:35:48,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-24 04:35:48,771 INFO L276 IsEmpty]: Start isEmpty. Operand 3753 states and 5483 transitions. [2022-02-24 04:35:48,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-02-24 04:35:48,772 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:35:48,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:35:48,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-24 04:35:48,772 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:35:48,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:35:48,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1749808949, now seen corresponding path program 1 times [2022-02-24 04:35:48,773 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:35:48,773 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647012202] [2022-02-24 04:35:48,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:35:48,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:35:48,782 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:35:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:49,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:35:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:49,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:35:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:49,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:35:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:49,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:35:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:49,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:35:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:49,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:35:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:49,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:35:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:49,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:35:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:35:49,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:35:49,287 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:35:49,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647012202] [2022-02-24 04:35:49,287 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [647012202] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:35:49,287 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:35:49,287 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 04:35:49,287 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857237724] [2022-02-24 04:35:49,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:35:49,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 04:35:49,287 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:35:49,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 04:35:49,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:35:49,288 INFO L87 Difference]: Start difference. First operand 3753 states and 5483 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-24 04:35:54,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:56,985 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:35:59,090 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:04,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:07,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:36:07,520 INFO L93 Difference]: Finished difference Result 4462 states and 6721 transitions. [2022-02-24 04:36:07,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 04:36:07,520 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 60 [2022-02-24 04:36:07,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:36:07,545 INFO L225 Difference]: With dead ends: 4462 [2022-02-24 04:36:07,546 INFO L226 Difference]: Without dead ends: 4440 [2022-02-24 04:36:07,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-02-24 04:36:07,549 INFO L933 BasicCegarLoop]: 719 mSDtfsCounter, 1783 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 5322 mSolverCounterSat, 744 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1822 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 6070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 744 IncrementalHoareTripleChecker+Valid, 5322 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2022-02-24 04:36:07,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1822 Valid, 1847 Invalid, 6070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [744 Valid, 5322 Invalid, 4 Unknown, 0 Unchecked, 16.7s Time] [2022-02-24 04:36:07,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4440 states. [2022-02-24 04:36:08,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4440 to 3746. [2022-02-24 04:36:08,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3746 states, 2951 states have (on average 1.4330735343951202) internal successors, (4229), 3018 states have internal predecessors, (4229), 497 states have call successors, (497), 257 states have call predecessors, (497), 297 states have return successors, (748), 488 states have call predecessors, (748), 481 states have call successors, (748) [2022-02-24 04:36:08,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3746 states to 3746 states and 5474 transitions. [2022-02-24 04:36:08,220 INFO L78 Accepts]: Start accepts. Automaton has 3746 states and 5474 transitions. Word has length 60 [2022-02-24 04:36:08,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:36:08,220 INFO L470 AbstractCegarLoop]: Abstraction has 3746 states and 5474 transitions. [2022-02-24 04:36:08,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-24 04:36:08,221 INFO L276 IsEmpty]: Start isEmpty. Operand 3746 states and 5474 transitions. [2022-02-24 04:36:08,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-24 04:36:08,222 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:36:08,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:36:08,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-24 04:36:08,222 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:36:08,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:36:08,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1740462473, now seen corresponding path program 1 times [2022-02-24 04:36:08,222 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:36:08,222 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658883090] [2022-02-24 04:36:08,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:36:08,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:36:08,232 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:36:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:08,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:36:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:08,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:36:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:08,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:36:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:08,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:36:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:08,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:36:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:08,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:36:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:08,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-02-24 04:36:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:08,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:36:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:08,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:36:08,702 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:36:08,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658883090] [2022-02-24 04:36:08,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1658883090] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:36:08,702 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:36:08,703 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 04:36:08,703 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376020869] [2022-02-24 04:36:08,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:36:08,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 04:36:08,703 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:36:08,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 04:36:08,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-02-24 04:36:08,703 INFO L87 Difference]: Start difference. First operand 3746 states and 5474 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:36:14,734 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:21,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:36:21,207 INFO L93 Difference]: Finished difference Result 12172 states and 18769 transitions. [2022-02-24 04:36:21,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-24 04:36:21,208 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2022-02-24 04:36:21,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:36:21,235 INFO L225 Difference]: With dead ends: 12172 [2022-02-24 04:36:21,235 INFO L226 Difference]: Without dead ends: 8670 [2022-02-24 04:36:21,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-02-24 04:36:21,256 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 4213 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 3263 mSolverCounterSat, 1889 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4273 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 5153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1889 IncrementalHoareTripleChecker+Valid, 3263 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-02-24 04:36:21,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4273 Valid, 1771 Invalid, 5153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1889 Valid, 3263 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-02-24 04:36:21,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8670 states. [2022-02-24 04:36:22,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8670 to 7477. [2022-02-24 04:36:22,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7477 states, 5891 states have (on average 1.443388219317603) internal successors, (8503), 6073 states have internal predecessors, (8503), 1008 states have call successors, (1008), 475 states have call predecessors, (1008), 577 states have return successors, (1804), 964 states have call predecessors, (1804), 995 states have call successors, (1804) [2022-02-24 04:36:22,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7477 states to 7477 states and 11315 transitions. [2022-02-24 04:36:22,763 INFO L78 Accepts]: Start accepts. Automaton has 7477 states and 11315 transitions. Word has length 69 [2022-02-24 04:36:22,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:36:22,763 INFO L470 AbstractCegarLoop]: Abstraction has 7477 states and 11315 transitions. [2022-02-24 04:36:22,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:36:22,764 INFO L276 IsEmpty]: Start isEmpty. Operand 7477 states and 11315 transitions. [2022-02-24 04:36:22,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-24 04:36:22,765 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:36:22,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:36:22,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-24 04:36:22,765 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:36:22,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:36:22,765 INFO L85 PathProgramCache]: Analyzing trace with hash -858477288, now seen corresponding path program 1 times [2022-02-24 04:36:22,765 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:36:22,766 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300899537] [2022-02-24 04:36:22,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:36:22,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:36:22,777 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:36:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:22,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:36:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:23,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:36:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:23,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:36:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:23,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:36:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:23,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:36:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:23,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:36:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:23,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-24 04:36:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:23,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:36:23,241 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:36:23,241 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300899537] [2022-02-24 04:36:23,241 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [300899537] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:36:23,241 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:36:23,241 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-24 04:36:23,241 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825922556] [2022-02-24 04:36:23,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:36:23,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-24 04:36:23,242 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:36:23,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-24 04:36:23,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-24 04:36:23,242 INFO L87 Difference]: Start difference. First operand 7477 states and 11315 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 04:36:28,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:33,737 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:38,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:36:38,363 INFO L93 Difference]: Finished difference Result 15189 states and 23518 transitions. [2022-02-24 04:36:38,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-24 04:36:38,366 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 61 [2022-02-24 04:36:38,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:36:38,394 INFO L225 Difference]: With dead ends: 15189 [2022-02-24 04:36:38,394 INFO L226 Difference]: Without dead ends: 8787 [2022-02-24 04:36:38,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-02-24 04:36:38,419 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 1515 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 3912 mSolverCounterSat, 647 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 4561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 3912 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-02-24 04:36:38,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1551 Valid, 1398 Invalid, 4561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 3912 Invalid, 2 Unknown, 0 Unchecked, 12.2s Time] [2022-02-24 04:36:38,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8787 states. [2022-02-24 04:36:39,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8787 to 7633. [2022-02-24 04:36:39,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7633 states, 6047 states have (on average 1.4359186373408301) internal successors, (8683), 6229 states have internal predecessors, (8683), 1008 states have call successors, (1008), 475 states have call predecessors, (1008), 577 states have return successors, (1804), 964 states have call predecessors, (1804), 995 states have call successors, (1804) [2022-02-24 04:36:40,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7633 states to 7633 states and 11495 transitions. [2022-02-24 04:36:40,023 INFO L78 Accepts]: Start accepts. Automaton has 7633 states and 11495 transitions. Word has length 61 [2022-02-24 04:36:40,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:36:40,024 INFO L470 AbstractCegarLoop]: Abstraction has 7633 states and 11495 transitions. [2022-02-24 04:36:40,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-24 04:36:40,024 INFO L276 IsEmpty]: Start isEmpty. Operand 7633 states and 11495 transitions. [2022-02-24 04:36:40,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-24 04:36:40,025 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:36:40,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:36:40,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-24 04:36:40,025 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:36:40,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:36:40,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1733980064, now seen corresponding path program 1 times [2022-02-24 04:36:40,026 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:36:40,026 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373484735] [2022-02-24 04:36:40,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:36:40,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:36:40,036 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:36:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:40,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:36:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:40,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:36:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:40,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:36:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:40,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:36:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:40,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:36:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:40,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:36:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:40,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-24 04:36:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:40,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-24 04:36:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:40,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:36:40,532 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:36:40,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373484735] [2022-02-24 04:36:40,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [373484735] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:36:40,532 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:36:40,532 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 04:36:40,532 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180330117] [2022-02-24 04:36:40,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:36:40,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 04:36:40,533 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:36:40,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 04:36:40,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:36:40,533 INFO L87 Difference]: Start difference. First operand 7633 states and 11495 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-24 04:36:45,664 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:47,780 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:52,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:36:57,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:36:57,363 INFO L93 Difference]: Finished difference Result 8715 states and 13445 transitions. [2022-02-24 04:36:57,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 04:36:57,364 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 64 [2022-02-24 04:36:57,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:36:57,388 INFO L225 Difference]: With dead ends: 8715 [2022-02-24 04:36:57,389 INFO L226 Difference]: Without dead ends: 8699 [2022-02-24 04:36:57,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2022-02-24 04:36:57,393 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 1954 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 4561 mSolverCounterSat, 863 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 5427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 863 IncrementalHoareTripleChecker+Valid, 4561 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:36:57,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1992 Valid, 1733 Invalid, 5427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [863 Valid, 4561 Invalid, 3 Unknown, 0 Unchecked, 14.0s Time] [2022-02-24 04:36:57,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8699 states. [2022-02-24 04:36:58,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8699 to 7639. [2022-02-24 04:36:58,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7639 states, 6050 states have (on average 1.4357024793388429) internal successors, (8686), 6235 states have internal predecessors, (8686), 1008 states have call successors, (1008), 475 states have call predecessors, (1008), 580 states have return successors, (1826), 964 states have call predecessors, (1826), 995 states have call successors, (1826) [2022-02-24 04:36:58,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7639 states to 7639 states and 11520 transitions. [2022-02-24 04:36:58,974 INFO L78 Accepts]: Start accepts. Automaton has 7639 states and 11520 transitions. Word has length 64 [2022-02-24 04:36:58,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:36:58,975 INFO L470 AbstractCegarLoop]: Abstraction has 7639 states and 11520 transitions. [2022-02-24 04:36:58,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-24 04:36:58,975 INFO L276 IsEmpty]: Start isEmpty. Operand 7639 states and 11520 transitions. [2022-02-24 04:36:58,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-24 04:36:58,976 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:36:58,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:36:58,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-24 04:36:58,977 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:36:58,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:36:58,977 INFO L85 PathProgramCache]: Analyzing trace with hash 326599203, now seen corresponding path program 1 times [2022-02-24 04:36:58,977 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:36:58,977 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366321679] [2022-02-24 04:36:58,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:36:58,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:36:58,987 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:36:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:59,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:36:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:59,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:36:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:59,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:36:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:59,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:36:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:59,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:36:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:59,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:36:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:59,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-02-24 04:36:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:59,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-02-24 04:36:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:36:59,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:36:59,473 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:36:59,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366321679] [2022-02-24 04:36:59,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1366321679] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:36:59,473 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:36:59,473 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 04:36:59,473 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307883827] [2022-02-24 04:36:59,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:36:59,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 04:36:59,473 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:36:59,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 04:36:59,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:36:59,474 INFO L87 Difference]: Start difference. First operand 7639 states and 11520 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-24 04:37:07,062 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:12,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:37:12,184 INFO L93 Difference]: Finished difference Result 8707 states and 13419 transitions. [2022-02-24 04:37:12,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 04:37:12,185 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 65 [2022-02-24 04:37:12,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:37:12,210 INFO L225 Difference]: With dead ends: 8707 [2022-02-24 04:37:12,210 INFO L226 Difference]: Without dead ends: 8687 [2022-02-24 04:37:12,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-02-24 04:37:12,215 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 2003 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 4560 mSolverCounterSat, 877 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2041 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 5438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 4560 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-02-24 04:37:12,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2041 Valid, 1790 Invalid, 5438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 4560 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2022-02-24 04:37:12,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8687 states. [2022-02-24 04:37:13,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8687 to 7637. [2022-02-24 04:37:13,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7637 states, 6049 states have (on average 1.4356091916019176) internal successors, (8684), 6234 states have internal predecessors, (8684), 1007 states have call successors, (1007), 475 states have call predecessors, (1007), 580 states have return successors, (1825), 963 states have call predecessors, (1825), 994 states have call successors, (1825) [2022-02-24 04:37:13,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 11516 transitions. [2022-02-24 04:37:13,833 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 11516 transitions. Word has length 65 [2022-02-24 04:37:13,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:37:13,834 INFO L470 AbstractCegarLoop]: Abstraction has 7637 states and 11516 transitions. [2022-02-24 04:37:13,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-24 04:37:13,834 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 11516 transitions. [2022-02-24 04:37:13,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-24 04:37:13,835 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:37:13,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:37:13,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-24 04:37:13,836 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:37:13,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:37:13,836 INFO L85 PathProgramCache]: Analyzing trace with hash -455424616, now seen corresponding path program 1 times [2022-02-24 04:37:13,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:37:13,836 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875627371] [2022-02-24 04:37:13,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:37:13,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:37:13,846 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:37:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:14,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:37:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:14,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:37:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:14,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:37:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:14,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:37:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:14,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:14,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-24 04:37:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:14,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-24 04:37:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:14,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 04:37:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:14,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:37:14,422 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:37:14,422 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875627371] [2022-02-24 04:37:14,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1875627371] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:37:14,422 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:37:14,422 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 04:37:14,422 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348530558] [2022-02-24 04:37:14,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:37:14,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 04:37:14,423 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:37:14,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 04:37:14,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:37:14,423 INFO L87 Difference]: Start difference. First operand 7637 states and 11516 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:37:22,771 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:27,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:37:27,933 INFO L93 Difference]: Finished difference Result 16296 states and 24880 transitions. [2022-02-24 04:37:27,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 04:37:27,934 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 4 states have internal predecessors, (49), 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 67 [2022-02-24 04:37:27,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:37:27,965 INFO L225 Difference]: With dead ends: 16296 [2022-02-24 04:37:27,965 INFO L226 Difference]: Without dead ends: 8687 [2022-02-24 04:37:27,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2022-02-24 04:37:27,995 INFO L933 BasicCegarLoop]: 712 mSDtfsCounter, 1816 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 4964 mSolverCounterSat, 818 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 5783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 818 IncrementalHoareTripleChecker+Valid, 4964 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-02-24 04:37:27,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1853 Valid, 1824 Invalid, 5783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [818 Valid, 4964 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-02-24 04:37:28,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8687 states. [2022-02-24 04:37:29,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8687 to 7637. [2022-02-24 04:37:29,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7637 states, 6049 states have (on average 1.4354438750206646) internal successors, (8683), 6234 states have internal predecessors, (8683), 1007 states have call successors, (1007), 475 states have call predecessors, (1007), 580 states have return successors, (1825), 963 states have call predecessors, (1825), 994 states have call successors, (1825) [2022-02-24 04:37:29,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 11515 transitions. [2022-02-24 04:37:29,628 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 11515 transitions. Word has length 67 [2022-02-24 04:37:29,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:37:29,629 INFO L470 AbstractCegarLoop]: Abstraction has 7637 states and 11515 transitions. [2022-02-24 04:37:29,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:37:29,629 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 11515 transitions. [2022-02-24 04:37:29,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-24 04:37:29,630 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:37:29,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:37:29,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-24 04:37:29,630 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:37:29,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:37:29,631 INFO L85 PathProgramCache]: Analyzing trace with hash -2112328753, now seen corresponding path program 1 times [2022-02-24 04:37:29,631 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:37:29,631 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026473612] [2022-02-24 04:37:29,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:37:29,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:37:29,640 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:37:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:29,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:37:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:29,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:37:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:29,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:37:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:30,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:37:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:30,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:30,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 04:37:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:30,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-24 04:37:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:30,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-24 04:37:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:30,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:37:30,166 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:37:30,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026473612] [2022-02-24 04:37:30,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1026473612] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:37:30,166 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:37:30,166 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 04:37:30,167 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375543440] [2022-02-24 04:37:30,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:37:30,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 04:37:30,167 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:37:30,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 04:37:30,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:37:30,167 INFO L87 Difference]: Start difference. First operand 7637 states and 11515 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-24 04:37:37,221 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:42,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:37:42,255 INFO L93 Difference]: Finished difference Result 8702 states and 13411 transitions. [2022-02-24 04:37:42,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 04:37:42,256 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 71 [2022-02-24 04:37:42,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:37:42,282 INFO L225 Difference]: With dead ends: 8702 [2022-02-24 04:37:42,282 INFO L226 Difference]: Without dead ends: 8682 [2022-02-24 04:37:42,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-02-24 04:37:42,288 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 2280 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 4232 mSolverCounterSat, 1051 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2318 SdHoareTripleChecker+Valid, 1879 SdHoareTripleChecker+Invalid, 5284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1051 IncrementalHoareTripleChecker+Valid, 4232 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-02-24 04:37:42,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2318 Valid, 1879 Invalid, 5284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1051 Valid, 4232 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2022-02-24 04:37:42,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8682 states. [2022-02-24 04:37:43,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8682 to 7632. [2022-02-24 04:37:43,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7632 states, 6046 states have (on average 1.4354945418458485) internal successors, (8679), 6231 states have internal predecessors, (8679), 1006 states have call successors, (1006), 475 states have call predecessors, (1006), 579 states have return successors, (1823), 961 states have call predecessors, (1823), 993 states have call successors, (1823) [2022-02-24 04:37:44,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7632 states to 7632 states and 11508 transitions. [2022-02-24 04:37:44,003 INFO L78 Accepts]: Start accepts. Automaton has 7632 states and 11508 transitions. Word has length 71 [2022-02-24 04:37:44,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:37:44,003 INFO L470 AbstractCegarLoop]: Abstraction has 7632 states and 11508 transitions. [2022-02-24 04:37:44,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-24 04:37:44,003 INFO L276 IsEmpty]: Start isEmpty. Operand 7632 states and 11508 transitions. [2022-02-24 04:37:44,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-24 04:37:44,004 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:37:44,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:37:44,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-24 04:37:44,005 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:37:44,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:37:44,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1256030660, now seen corresponding path program 1 times [2022-02-24 04:37:44,005 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:37:44,005 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598639066] [2022-02-24 04:37:44,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:37:44,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:37:44,014 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:37:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:44,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:37:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:44,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:37:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:44,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:37:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:44,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:37:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:44,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:37:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:44,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 04:37:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:44,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 04:37:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:44,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 04:37:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:37:44,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:37:44,534 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:37:44,534 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598639066] [2022-02-24 04:37:44,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1598639066] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:37:44,534 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:37:44,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 04:37:44,534 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943295104] [2022-02-24 04:37:44,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:37:44,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 04:37:44,535 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:37:44,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 04:37:44,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-02-24 04:37:44,535 INFO L87 Difference]: Start difference. First operand 7632 states and 11508 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-24 04:37:50,954 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:53,078 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:37:59,567 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:12,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:38:12,140 INFO L93 Difference]: Finished difference Result 14564 states and 22493 transitions. [2022-02-24 04:38:12,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-24 04:38:12,141 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 72 [2022-02-24 04:38:12,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:38:12,172 INFO L225 Difference]: With dead ends: 14564 [2022-02-24 04:38:12,172 INFO L226 Difference]: Without dead ends: 10286 [2022-02-24 04:38:12,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=566, Invalid=2404, Unknown=0, NotChecked=0, Total=2970 [2022-02-24 04:38:12,188 INFO L933 BasicCegarLoop]: 1101 mSDtfsCounter, 3789 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 8041 mSolverCounterSat, 2037 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3797 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 10081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2037 IncrementalHoareTripleChecker+Valid, 8041 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:38:12,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3797 Valid, 2404 Invalid, 10081 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2037 Valid, 8041 Invalid, 3 Unknown, 0 Unchecked, 22.0s Time] [2022-02-24 04:38:12,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10286 states. [2022-02-24 04:38:14,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10286 to 8242. [2022-02-24 04:38:14,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8242 states, 6535 states have (on average 1.434583014537108) internal successors, (9375), 6726 states have internal predecessors, (9375), 1073 states have call successors, (1073), 517 states have call predecessors, (1073), 633 states have return successors, (1965), 1033 states have call predecessors, (1965), 1059 states have call successors, (1965) [2022-02-24 04:38:14,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8242 states to 8242 states and 12413 transitions. [2022-02-24 04:38:14,139 INFO L78 Accepts]: Start accepts. Automaton has 8242 states and 12413 transitions. Word has length 72 [2022-02-24 04:38:14,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:38:14,139 INFO L470 AbstractCegarLoop]: Abstraction has 8242 states and 12413 transitions. [2022-02-24 04:38:14,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-24 04:38:14,140 INFO L276 IsEmpty]: Start isEmpty. Operand 8242 states and 12413 transitions. [2022-02-24 04:38:14,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-24 04:38:14,141 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:38:14,141 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:38:14,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-24 04:38:14,141 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:38:14,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:38:14,141 INFO L85 PathProgramCache]: Analyzing trace with hash -26354390, now seen corresponding path program 1 times [2022-02-24 04:38:14,141 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:38:14,142 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694519303] [2022-02-24 04:38:14,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:38:14,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:38:14,151 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:38:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:14,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:38:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:14,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:38:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:14,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:38:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:14,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:38:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:14,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:14,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 04:38:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:14,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 04:38:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:14,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-24 04:38:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:14,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:38:14,627 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:38:14,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694519303] [2022-02-24 04:38:14,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1694519303] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:38:14,627 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:38:14,627 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 04:38:14,628 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223300788] [2022-02-24 04:38:14,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:38:14,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 04:38:14,628 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:38:14,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 04:38:14,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:38:14,628 INFO L87 Difference]: Start difference. First operand 8242 states and 12413 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-24 04:38:20,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:22,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:24,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:26,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:33,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:39,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:38:39,427 INFO L93 Difference]: Finished difference Result 16704 states and 25792 transitions. [2022-02-24 04:38:39,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 04:38:39,429 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 73 [2022-02-24 04:38:39,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:38:39,456 INFO L225 Difference]: With dead ends: 16704 [2022-02-24 04:38:39,456 INFO L226 Difference]: Without dead ends: 9654 [2022-02-24 04:38:39,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2022-02-24 04:38:39,476 INFO L933 BasicCegarLoop]: 685 mSDtfsCounter, 1759 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 5340 mSolverCounterSat, 791 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1794 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 6136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 791 IncrementalHoareTripleChecker+Valid, 5340 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2022-02-24 04:38:39,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1794 Valid, 1764 Invalid, 6136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [791 Valid, 5340 Invalid, 5 Unknown, 0 Unchecked, 20.7s Time] [2022-02-24 04:38:39,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9654 states. [2022-02-24 04:38:41,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9654 to 8322. [2022-02-24 04:38:41,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8322 states, 6593 states have (on average 1.4307598968603064) internal successors, (9433), 6794 states have internal predecessors, (9433), 1073 states have call successors, (1073), 517 states have call predecessors, (1073), 655 states have return successors, (2032), 1045 states have call predecessors, (2032), 1059 states have call successors, (2032) [2022-02-24 04:38:41,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8322 states to 8322 states and 12538 transitions. [2022-02-24 04:38:41,530 INFO L78 Accepts]: Start accepts. Automaton has 8322 states and 12538 transitions. Word has length 73 [2022-02-24 04:38:41,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:38:41,530 INFO L470 AbstractCegarLoop]: Abstraction has 8322 states and 12538 transitions. [2022-02-24 04:38:41,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-24 04:38:41,530 INFO L276 IsEmpty]: Start isEmpty. Operand 8322 states and 12538 transitions. [2022-02-24 04:38:41,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-24 04:38:41,532 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:38:41,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:38:41,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-24 04:38:41,532 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:38:41,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:38:41,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1359799553, now seen corresponding path program 1 times [2022-02-24 04:38:41,533 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:38:41,533 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123719226] [2022-02-24 04:38:41,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:38:41,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:38:41,543 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:38:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:41,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:38:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:41,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:38:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:41,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:38:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:41,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:38:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:41,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:38:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:41,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 04:38:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:42,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 04:38:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:42,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 04:38:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:38:42,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:38:42,074 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:38:42,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123719226] [2022-02-24 04:38:42,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [123719226] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:38:42,074 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:38:42,074 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 04:38:42,074 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684591770] [2022-02-24 04:38:42,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:38:42,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 04:38:42,074 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:38:42,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 04:38:42,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-24 04:38:42,075 INFO L87 Difference]: Start difference. First operand 8322 states and 12538 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:38:47,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:49,533 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:54,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:38:59,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:38:59,676 INFO L93 Difference]: Finished difference Result 17616 states and 27205 transitions. [2022-02-24 04:38:59,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-24 04:38:59,676 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2022-02-24 04:38:59,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:38:59,706 INFO L225 Difference]: With dead ends: 17616 [2022-02-24 04:38:59,706 INFO L226 Difference]: Without dead ends: 9548 [2022-02-24 04:38:59,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=222, Invalid=590, Unknown=0, NotChecked=0, Total=812 [2022-02-24 04:38:59,731 INFO L933 BasicCegarLoop]: 659 mSDtfsCounter, 2928 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 2855 mSolverCounterSat, 1219 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2979 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 4077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1219 IncrementalHoareTripleChecker+Valid, 2855 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-02-24 04:38:59,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2979 Valid, 1284 Invalid, 4077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1219 Valid, 2855 Invalid, 3 Unknown, 0 Unchecked, 13.3s Time] [2022-02-24 04:38:59,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9548 states. [2022-02-24 04:39:01,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9548 to 8341. [2022-02-24 04:39:01,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8341 states, 6612 states have (on average 1.4310344827586208) internal successors, (9462), 6813 states have internal predecessors, (9462), 1073 states have call successors, (1073), 517 states have call predecessors, (1073), 655 states have return successors, (2032), 1045 states have call predecessors, (2032), 1059 states have call successors, (2032) [2022-02-24 04:39:01,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8341 states to 8341 states and 12567 transitions. [2022-02-24 04:39:01,854 INFO L78 Accepts]: Start accepts. Automaton has 8341 states and 12567 transitions. Word has length 74 [2022-02-24 04:39:01,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:39:01,855 INFO L470 AbstractCegarLoop]: Abstraction has 8341 states and 12567 transitions. [2022-02-24 04:39:01,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:39:01,855 INFO L276 IsEmpty]: Start isEmpty. Operand 8341 states and 12567 transitions. [2022-02-24 04:39:01,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-24 04:39:01,856 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:39:01,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:39:01,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-24 04:39:01,857 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:39:01,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:39:01,857 INFO L85 PathProgramCache]: Analyzing trace with hash 941023037, now seen corresponding path program 1 times [2022-02-24 04:39:01,857 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:39:01,857 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490111280] [2022-02-24 04:39:01,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:39:01,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:39:01,866 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:39:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:02,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:39:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:02,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:39:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:02,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:39:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:02,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:39:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:02,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:02,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 04:39:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:02,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 04:39:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:02,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 04:39:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:02,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:39:02,426 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:39:02,426 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490111280] [2022-02-24 04:39:02,426 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1490111280] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:39:02,426 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:39:02,426 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 04:39:02,426 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948382932] [2022-02-24 04:39:02,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:39:02,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 04:39:02,427 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:39:02,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 04:39:02,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-02-24 04:39:02,427 INFO L87 Difference]: Start difference. First operand 8341 states and 12567 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-24 04:39:11,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:17,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:39:17,706 INFO L93 Difference]: Finished difference Result 13651 states and 20845 transitions. [2022-02-24 04:39:17,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-24 04:39:17,706 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2022-02-24 04:39:17,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:39:17,729 INFO L225 Difference]: With dead ends: 13651 [2022-02-24 04:39:17,729 INFO L226 Difference]: Without dead ends: 9322 [2022-02-24 04:39:17,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=374, Invalid=1432, Unknown=0, NotChecked=0, Total=1806 [2022-02-24 04:39:17,744 INFO L933 BasicCegarLoop]: 670 mSDtfsCounter, 3109 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 4660 mSolverCounterSat, 1380 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3140 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 6041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1380 IncrementalHoareTripleChecker+Valid, 4660 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-02-24 04:39:17,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3140 Valid, 1534 Invalid, 6041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1380 Valid, 4660 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-02-24 04:39:17,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9322 states. [2022-02-24 04:39:19,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9322 to 7543. [2022-02-24 04:39:19,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7543 states, 5980 states have (on average 1.4295986622073578) internal successors, (8549), 6169 states have internal predecessors, (8549), 970 states have call successors, (970), 471 states have call predecessors, (970), 592 states have return successors, (1659), 937 states have call predecessors, (1659), 956 states have call successors, (1659) [2022-02-24 04:39:19,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7543 states to 7543 states and 11178 transitions. [2022-02-24 04:39:19,770 INFO L78 Accepts]: Start accepts. Automaton has 7543 states and 11178 transitions. Word has length 74 [2022-02-24 04:39:19,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:39:19,770 INFO L470 AbstractCegarLoop]: Abstraction has 7543 states and 11178 transitions. [2022-02-24 04:39:19,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-02-24 04:39:19,770 INFO L276 IsEmpty]: Start isEmpty. Operand 7543 states and 11178 transitions. [2022-02-24 04:39:19,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-24 04:39:19,771 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:39:19,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:39:19,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-24 04:39:19,772 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:39:19,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:39:19,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1087715839, now seen corresponding path program 1 times [2022-02-24 04:39:19,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:39:19,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308514002] [2022-02-24 04:39:19,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:39:19,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:39:19,783 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:39:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:19,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:39:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:20,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:39:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:20,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:39:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:20,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:39:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:20,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:20,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 04:39:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:20,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 04:39:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:20,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 04:39:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:20,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:39:20,204 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:39:20,204 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308514002] [2022-02-24 04:39:20,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [308514002] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:39:20,204 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:39:20,204 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-24 04:39:20,204 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016612553] [2022-02-24 04:39:20,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:39:20,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-24 04:39:20,205 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:39:20,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-24 04:39:20,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-02-24 04:39:20,206 INFO L87 Difference]: Start difference. First operand 7543 states and 11178 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-24 04:39:29,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:41,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:39:41,054 INFO L93 Difference]: Finished difference Result 11702 states and 17816 transitions. [2022-02-24 04:39:41,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-24 04:39:41,056 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 74 [2022-02-24 04:39:41,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:39:41,087 INFO L225 Difference]: With dead ends: 11702 [2022-02-24 04:39:41,087 INFO L226 Difference]: Without dead ends: 11689 [2022-02-24 04:39:41,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=231, Invalid=639, Unknown=0, NotChecked=0, Total=870 [2022-02-24 04:39:41,092 INFO L933 BasicCegarLoop]: 1152 mSDtfsCounter, 2245 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 5447 mSolverCounterSat, 1001 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2292 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 6449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1001 IncrementalHoareTripleChecker+Valid, 5447 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-02-24 04:39:41,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2292 Valid, 2186 Invalid, 6449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1001 Valid, 5447 Invalid, 1 Unknown, 0 Unchecked, 15.4s Time] [2022-02-24 04:39:41,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11689 states. [2022-02-24 04:39:43,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11689 to 8174. [2022-02-24 04:39:43,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8174 states, 6492 states have (on average 1.4322242760320394) internal successors, (9298), 6682 states have internal predecessors, (9298), 1039 states have call successors, (1039), 512 states have call predecessors, (1039), 642 states have return successors, (1773), 1015 states have call predecessors, (1773), 1025 states have call successors, (1773) [2022-02-24 04:39:43,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8174 states to 8174 states and 12110 transitions. [2022-02-24 04:39:43,551 INFO L78 Accepts]: Start accepts. Automaton has 8174 states and 12110 transitions. Word has length 74 [2022-02-24 04:39:43,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:39:43,551 INFO L470 AbstractCegarLoop]: Abstraction has 8174 states and 12110 transitions. [2022-02-24 04:39:43,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-24 04:39:43,552 INFO L276 IsEmpty]: Start isEmpty. Operand 8174 states and 12110 transitions. [2022-02-24 04:39:43,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-24 04:39:43,553 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:39:43,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:39:43,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-24 04:39:43,553 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:39:43,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:39:43,554 INFO L85 PathProgramCache]: Analyzing trace with hash -189949733, now seen corresponding path program 1 times [2022-02-24 04:39:43,554 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:39:43,554 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753987562] [2022-02-24 04:39:43,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:39:43,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:39:43,565 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:39:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:43,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:39:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:43,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:39:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:43,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:39:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:43,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:39:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:43,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:39:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:43,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 04:39:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:43,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 04:39:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:44,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 04:39:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:39:44,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:39:44,050 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:39:44,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753987562] [2022-02-24 04:39:44,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [753987562] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:39:44,050 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:39:44,050 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 04:39:44,050 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124683705] [2022-02-24 04:39:44,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:39:44,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 04:39:44,050 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:39:44,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 04:39:44,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:39:44,051 INFO L87 Difference]: Start difference. First operand 8174 states and 12110 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:39:49,976 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:39:55,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:08,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:40:08,065 INFO L93 Difference]: Finished difference Result 10307 states and 15642 transitions. [2022-02-24 04:40:08,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-24 04:40:08,066 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-02-24 04:40:08,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:40:08,089 INFO L225 Difference]: With dead ends: 10307 [2022-02-24 04:40:08,090 INFO L226 Difference]: Without dead ends: 10303 [2022-02-24 04:40:08,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=542, Invalid=1810, Unknown=0, NotChecked=0, Total=2352 [2022-02-24 04:40:08,093 INFO L933 BasicCegarLoop]: 1092 mSDtfsCounter, 3736 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 6625 mSolverCounterSat, 1769 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3778 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 8396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1769 IncrementalHoareTripleChecker+Valid, 6625 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2022-02-24 04:40:08,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3778 Valid, 2206 Invalid, 8396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1769 Valid, 6625 Invalid, 2 Unknown, 0 Unchecked, 17.1s Time] [2022-02-24 04:40:08,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10303 states. [2022-02-24 04:40:10,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10303 to 8176. [2022-02-24 04:40:10,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8176 states, 6494 states have (on average 1.4320911610717586) internal successors, (9300), 6684 states have internal predecessors, (9300), 1039 states have call successors, (1039), 512 states have call predecessors, (1039), 642 states have return successors, (1773), 1015 states have call predecessors, (1773), 1025 states have call successors, (1773) [2022-02-24 04:40:10,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8176 states to 8176 states and 12112 transitions. [2022-02-24 04:40:10,628 INFO L78 Accepts]: Start accepts. Automaton has 8176 states and 12112 transitions. Word has length 75 [2022-02-24 04:40:10,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:40:10,629 INFO L470 AbstractCegarLoop]: Abstraction has 8176 states and 12112 transitions. [2022-02-24 04:40:10,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:40:10,629 INFO L276 IsEmpty]: Start isEmpty. Operand 8176 states and 12112 transitions. [2022-02-24 04:40:10,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-24 04:40:10,630 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:40:10,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:40:10,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-24 04:40:10,630 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:40:10,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:40:10,631 INFO L85 PathProgramCache]: Analyzing trace with hash -189672903, now seen corresponding path program 1 times [2022-02-24 04:40:10,631 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:40:10,631 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408060415] [2022-02-24 04:40:10,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:40:10,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:40:10,641 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:40:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:11,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:40:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:11,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:40:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:11,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-24 04:40:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:11,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:40:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:11,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:11,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-24 04:40:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:11,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 04:40:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:11,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 04:40:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:40:11,431 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:40:11,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408060415] [2022-02-24 04:40:11,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1408060415] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:40:11,431 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:40:11,432 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-24 04:40:11,432 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163536513] [2022-02-24 04:40:11,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:40:11,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-24 04:40:11,432 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:40:11,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-24 04:40:11,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-24 04:40:11,432 INFO L87 Difference]: Start difference. First operand 8176 states and 12112 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:40:20,456 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:27,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:40:27,068 INFO L93 Difference]: Finished difference Result 17337 states and 26207 transitions. [2022-02-24 04:40:27,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-24 04:40:27,069 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-02-24 04:40:27,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:40:27,095 INFO L225 Difference]: With dead ends: 17337 [2022-02-24 04:40:27,096 INFO L226 Difference]: Without dead ends: 9126 [2022-02-24 04:40:27,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2022-02-24 04:40:27,118 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1912 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 3630 mSolverCounterSat, 813 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1948 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 4444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 813 IncrementalHoareTripleChecker+Valid, 3630 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-02-24 04:40:27,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1948 Valid, 1515 Invalid, 4444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [813 Valid, 3630 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2022-02-24 04:40:27,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9126 states. [2022-02-24 04:40:29,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9126 to 8199. [2022-02-24 04:40:29,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8199 states, 6517 states have (on average 1.4305662114469848) internal successors, (9323), 6707 states have internal predecessors, (9323), 1039 states have call successors, (1039), 512 states have call predecessors, (1039), 642 states have return successors, (1773), 1015 states have call predecessors, (1773), 1025 states have call successors, (1773) [2022-02-24 04:40:29,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8199 states to 8199 states and 12135 transitions. [2022-02-24 04:40:29,738 INFO L78 Accepts]: Start accepts. Automaton has 8199 states and 12135 transitions. Word has length 75 [2022-02-24 04:40:29,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:40:29,738 INFO L470 AbstractCegarLoop]: Abstraction has 8199 states and 12135 transitions. [2022-02-24 04:40:29,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:40:29,739 INFO L276 IsEmpty]: Start isEmpty. Operand 8199 states and 12135 transitions. [2022-02-24 04:40:29,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-24 04:40:29,740 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:40:29,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:40:29,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-24 04:40:29,740 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:40:29,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:40:29,740 INFO L85 PathProgramCache]: Analyzing trace with hash -593466891, now seen corresponding path program 1 times [2022-02-24 04:40:29,741 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:40:29,741 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715889382] [2022-02-24 04:40:29,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:40:29,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:40:29,761 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:40:29,761 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:40:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:30,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:40:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:30,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:40:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:30,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-24 04:40:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:30,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-24 04:40:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:30,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:30,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-24 04:40:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:30,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-24 04:40:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:30,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 04:40:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:40:30,442 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:40:30,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715889382] [2022-02-24 04:40:30,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [715889382] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:40:30,442 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:40:30,442 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-24 04:40:30,442 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022938211] [2022-02-24 04:40:30,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:40:30,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 04:40:30,443 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:40:30,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 04:40:30,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-24 04:40:30,443 INFO L87 Difference]: Start difference. First operand 8199 states and 12135 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:40:36,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:42,444 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:40:49,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:40:49,676 INFO L93 Difference]: Finished difference Result 17382 states and 26252 transitions. [2022-02-24 04:40:49,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-24 04:40:49,677 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2022-02-24 04:40:49,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:40:49,709 INFO L225 Difference]: With dead ends: 17382 [2022-02-24 04:40:49,709 INFO L226 Difference]: Without dead ends: 9149 [2022-02-24 04:40:49,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2022-02-24 04:40:49,735 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 2285 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 4364 mSolverCounterSat, 998 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2321 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 5364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 4364 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:40:49,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2321 Valid, 1792 Invalid, 5364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 4364 Invalid, 2 Unknown, 0 Unchecked, 14.0s Time] [2022-02-24 04:40:49,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9149 states. [2022-02-24 04:40:52,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9149 to 8222. [2022-02-24 04:40:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8222 states, 6540 states have (on average 1.429051987767584) internal successors, (9346), 6730 states have internal predecessors, (9346), 1039 states have call successors, (1039), 512 states have call predecessors, (1039), 642 states have return successors, (1773), 1015 states have call predecessors, (1773), 1025 states have call successors, (1773) [2022-02-24 04:40:52,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8222 states to 8222 states and 12158 transitions. [2022-02-24 04:40:52,560 INFO L78 Accepts]: Start accepts. Automaton has 8222 states and 12158 transitions. Word has length 76 [2022-02-24 04:40:52,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:40:52,561 INFO L470 AbstractCegarLoop]: Abstraction has 8222 states and 12158 transitions. [2022-02-24 04:40:52,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:40:52,561 INFO L276 IsEmpty]: Start isEmpty. Operand 8222 states and 12158 transitions. [2022-02-24 04:40:52,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-24 04:40:52,562 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:40:52,562 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:40:52,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-24 04:40:52,562 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:40:52,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:40:52,563 INFO L85 PathProgramCache]: Analyzing trace with hash -226178631, now seen corresponding path program 2 times [2022-02-24 04:40:52,563 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:40:52,563 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858022043] [2022-02-24 04:40:52,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:40:52,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:40:52,574 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:40:52,574 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:40:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:52,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:40:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:52,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:40:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:53,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-02-24 04:40:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:53,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 04:40:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:53,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:40:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:53,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-24 04:40:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:53,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-24 04:40:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:53,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 04:40:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:40:53,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:40:53,316 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:40:53,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858022043] [2022-02-24 04:40:53,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1858022043] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:40:53,316 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:40:53,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-24 04:40:53,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152312355] [2022-02-24 04:40:53,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:40:53,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-24 04:40:53,317 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:40:53,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-24 04:40:53,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-02-24 04:40:53,317 INFO L87 Difference]: Start difference. First operand 8222 states and 12158 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:41:00,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:02,351 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:04,477 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:09,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:17,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:41:17,374 INFO L93 Difference]: Finished difference Result 17427 states and 26297 transitions. [2022-02-24 04:41:17,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-24 04:41:17,374 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2022-02-24 04:41:17,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:41:17,405 INFO L225 Difference]: With dead ends: 17427 [2022-02-24 04:41:17,406 INFO L226 Difference]: Without dead ends: 9172 [2022-02-24 04:41:17,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2022-02-24 04:41:17,428 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1763 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 4575 mSolverCounterSat, 793 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1799 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 5372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 793 IncrementalHoareTripleChecker+Valid, 4575 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2022-02-24 04:41:17,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1799 Valid, 1719 Invalid, 5372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [793 Valid, 4575 Invalid, 4 Unknown, 0 Unchecked, 18.7s Time] [2022-02-24 04:41:17,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9172 states. [2022-02-24 04:41:20,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9172 to 8245. [2022-02-24 04:41:20,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8245 states, 6563 states have (on average 1.427548377266494) internal successors, (9369), 6753 states have internal predecessors, (9369), 1039 states have call successors, (1039), 512 states have call predecessors, (1039), 642 states have return successors, (1773), 1015 states have call predecessors, (1773), 1025 states have call successors, (1773) [2022-02-24 04:41:20,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8245 states to 8245 states and 12181 transitions. [2022-02-24 04:41:20,324 INFO L78 Accepts]: Start accepts. Automaton has 8245 states and 12181 transitions. Word has length 77 [2022-02-24 04:41:20,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:41:20,324 INFO L470 AbstractCegarLoop]: Abstraction has 8245 states and 12181 transitions. [2022-02-24 04:41:20,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:41:20,325 INFO L276 IsEmpty]: Start isEmpty. Operand 8245 states and 12181 transitions. [2022-02-24 04:41:20,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-24 04:41:20,326 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:41:20,326 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:41:20,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-24 04:41:20,326 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:41:20,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:41:20,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1725144459, now seen corresponding path program 3 times [2022-02-24 04:41:20,327 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:41:20,327 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793875576] [2022-02-24 04:41:20,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:41:20,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:41:20,338 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:41:20,338 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:41:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:20,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:41:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:20,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:41:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:20,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-24 04:41:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:20,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-24 04:41:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:20,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:21,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-24 04:41:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:21,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-24 04:41:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:21,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 04:41:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:21,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:41:21,120 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:41:21,120 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793875576] [2022-02-24 04:41:21,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1793875576] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:41:21,120 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:41:21,120 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-24 04:41:21,120 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132690773] [2022-02-24 04:41:21,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:41:21,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-24 04:41:21,120 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:41:21,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-24 04:41:21,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-02-24 04:41:21,121 INFO L87 Difference]: Start difference. First operand 8245 states and 12181 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:41:32,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:41:41,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:41:41,055 INFO L93 Difference]: Finished difference Result 17472 states and 26342 transitions. [2022-02-24 04:41:41,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-24 04:41:41,056 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2022-02-24 04:41:41,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:41:41,086 INFO L225 Difference]: With dead ends: 17472 [2022-02-24 04:41:41,086 INFO L226 Difference]: Without dead ends: 9195 [2022-02-24 04:41:41,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2022-02-24 04:41:41,111 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1438 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 5590 mSolverCounterSat, 610 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 6201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 5590 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-02-24 04:41:41,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1474 Valid, 1804 Invalid, 6201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [610 Valid, 5590 Invalid, 1 Unknown, 0 Unchecked, 14.3s Time] [2022-02-24 04:41:41,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9195 states. [2022-02-24 04:41:44,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9195 to 8268. [2022-02-24 04:41:44,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8268 states, 6586 states have (on average 1.426055268751898) internal successors, (9392), 6776 states have internal predecessors, (9392), 1039 states have call successors, (1039), 512 states have call predecessors, (1039), 642 states have return successors, (1773), 1015 states have call predecessors, (1773), 1025 states have call successors, (1773) [2022-02-24 04:41:44,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8268 states to 8268 states and 12204 transitions. [2022-02-24 04:41:44,142 INFO L78 Accepts]: Start accepts. Automaton has 8268 states and 12204 transitions. Word has length 78 [2022-02-24 04:41:44,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:41:44,142 INFO L470 AbstractCegarLoop]: Abstraction has 8268 states and 12204 transitions. [2022-02-24 04:41:44,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:41:44,142 INFO L276 IsEmpty]: Start isEmpty. Operand 8268 states and 12204 transitions. [2022-02-24 04:41:44,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-24 04:41:44,144 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:41:44,144 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:41:44,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-24 04:41:44,144 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:41:44,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:41:44,144 INFO L85 PathProgramCache]: Analyzing trace with hash -948444871, now seen corresponding path program 4 times [2022-02-24 04:41:44,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:41:44,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025627342] [2022-02-24 04:41:44,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:41:44,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:41:44,157 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:41:44,157 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:41:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:44,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:41:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:44,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:41:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:44,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-24 04:41:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:44,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 04:41:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:44,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:41:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:44,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-24 04:41:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:44,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-02-24 04:41:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:45,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 04:41:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:41:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:41:45,073 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:41:45,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025627342] [2022-02-24 04:41:45,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1025627342] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:41:45,073 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:41:45,073 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-24 04:41:45,073 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71999833] [2022-02-24 04:41:45,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:41:45,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-24 04:41:45,074 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:41:45,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-24 04:41:45,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-02-24 04:41:45,074 INFO L87 Difference]: Start difference. First operand 8268 states and 12204 transitions. Second operand has 16 states, 16 states have (on average 3.8125) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:41:58,032 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:07,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:42:07,310 INFO L93 Difference]: Finished difference Result 17517 states and 26387 transitions. [2022-02-24 04:42:07,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-24 04:42:07,311 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 79 [2022-02-24 04:42:07,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:42:07,346 INFO L225 Difference]: With dead ends: 17517 [2022-02-24 04:42:07,346 INFO L226 Difference]: Without dead ends: 9218 [2022-02-24 04:42:07,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=186, Invalid=684, Unknown=0, NotChecked=0, Total=870 [2022-02-24 04:42:07,372 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 2002 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 6852 mSolverCounterSat, 932 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 2362 SdHoareTripleChecker+Invalid, 7785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 6852 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2022-02-24 04:42:07,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2038 Valid, 2362 Invalid, 7785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 6852 Invalid, 1 Unknown, 0 Unchecked, 16.4s Time] [2022-02-24 04:42:07,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9218 states. [2022-02-24 04:42:10,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9218 to 8291. [2022-02-24 04:42:10,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8291 states, 6609 states have (on average 1.4245725525798154) internal successors, (9415), 6799 states have internal predecessors, (9415), 1039 states have call successors, (1039), 512 states have call predecessors, (1039), 642 states have return successors, (1773), 1015 states have call predecessors, (1773), 1025 states have call successors, (1773) [2022-02-24 04:42:10,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8291 states to 8291 states and 12227 transitions. [2022-02-24 04:42:10,546 INFO L78 Accepts]: Start accepts. Automaton has 8291 states and 12227 transitions. Word has length 79 [2022-02-24 04:42:10,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:42:10,546 INFO L470 AbstractCegarLoop]: Abstraction has 8291 states and 12227 transitions. [2022-02-24 04:42:10,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:42:10,547 INFO L276 IsEmpty]: Start isEmpty. Operand 8291 states and 12227 transitions. [2022-02-24 04:42:10,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-24 04:42:10,548 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:42:10,548 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:42:10,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-24 04:42:10,548 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:42:10,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:42:10,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1654405877, now seen corresponding path program 5 times [2022-02-24 04:42:10,549 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:42:10,549 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892625243] [2022-02-24 04:42:10,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:42:10,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:42:10,560 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:42:10,560 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:42:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:10,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:42:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:10,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:42:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:11,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-24 04:42:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:11,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-24 04:42:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:11,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:42:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:11,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-02-24 04:42:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:11,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-24 04:42:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:11,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 04:42:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:11,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:42:11,380 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:42:11,380 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892625243] [2022-02-24 04:42:11,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [892625243] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:42:11,380 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:42:11,380 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-24 04:42:11,380 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241696451] [2022-02-24 04:42:11,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:42:11,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-24 04:42:11,381 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:42:11,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-24 04:42:11,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-02-24 04:42:11,381 INFO L87 Difference]: Start difference. First operand 8291 states and 12227 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 9 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:42:19,447 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:21,572 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:23,699 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:25,829 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:33,347 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:42:42,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:42:42,375 INFO L93 Difference]: Finished difference Result 17562 states and 26432 transitions. [2022-02-24 04:42:42,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-24 04:42:42,376 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 9 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2022-02-24 04:42:42,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:42:42,412 INFO L225 Difference]: With dead ends: 17562 [2022-02-24 04:42:42,412 INFO L226 Difference]: Without dead ends: 9241 [2022-02-24 04:42:42,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2022-02-24 04:42:42,475 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1935 mSDsluCounter, 1454 mSDsCounter, 0 mSdLazyCounter, 6048 mSolverCounterSat, 890 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1971 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 6943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 890 IncrementalHoareTripleChecker+Valid, 6048 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:42:42,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1971 Valid, 2158 Invalid, 6943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [890 Valid, 6048 Invalid, 5 Unknown, 0 Unchecked, 25.0s Time] [2022-02-24 04:42:42,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9241 states. [2022-02-24 04:42:45,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9241 to 8314. [2022-02-24 04:42:45,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8314 states, 6632 states have (on average 1.4231001206272618) internal successors, (9438), 6822 states have internal predecessors, (9438), 1039 states have call successors, (1039), 512 states have call predecessors, (1039), 642 states have return successors, (1773), 1015 states have call predecessors, (1773), 1025 states have call successors, (1773) [2022-02-24 04:42:45,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8314 states to 8314 states and 12250 transitions. [2022-02-24 04:42:45,703 INFO L78 Accepts]: Start accepts. Automaton has 8314 states and 12250 transitions. Word has length 80 [2022-02-24 04:42:45,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:42:45,704 INFO L470 AbstractCegarLoop]: Abstraction has 8314 states and 12250 transitions. [2022-02-24 04:42:45,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 9 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:42:45,704 INFO L276 IsEmpty]: Start isEmpty. Operand 8314 states and 12250 transitions. [2022-02-24 04:42:45,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-24 04:42:45,705 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:42:45,705 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:42:45,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-24 04:42:45,705 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:42:45,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:42:45,706 INFO L85 PathProgramCache]: Analyzing trace with hash 738400441, now seen corresponding path program 6 times [2022-02-24 04:42:45,706 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:42:45,706 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267646494] [2022-02-24 04:42:45,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:42:45,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:42:45,717 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:42:45,718 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:42:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:45,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:42:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:46,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:42:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:46,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-24 04:42:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:46,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-24 04:42:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:46,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:42:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:46,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-24 04:42:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:46,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-24 04:42:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:46,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 04:42:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:42:46,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:42:46,598 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:42:46,598 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267646494] [2022-02-24 04:42:46,598 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1267646494] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:42:46,598 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:42:46,598 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-24 04:42:46,598 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143415910] [2022-02-24 04:42:46,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:42:46,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-24 04:42:46,598 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:42:46,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-24 04:42:46,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-02-24 04:42:46,599 INFO L87 Difference]: Start difference. First operand 8314 states and 12250 transitions. Second operand has 18 states, 18 states have (on average 3.5) internal successors, (63), 10 states have internal predecessors, (63), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:43:00,494 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:09,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:43:09,120 INFO L93 Difference]: Finished difference Result 17607 states and 26477 transitions. [2022-02-24 04:43:09,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-24 04:43:09,121 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 10 states have internal predecessors, (63), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 81 [2022-02-24 04:43:09,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:43:09,154 INFO L225 Difference]: With dead ends: 17607 [2022-02-24 04:43:09,154 INFO L226 Difference]: Without dead ends: 9264 [2022-02-24 04:43:09,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=214, Invalid=908, Unknown=0, NotChecked=0, Total=1122 [2022-02-24 04:43:09,179 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 2235 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 5675 mSolverCounterSat, 1024 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 2159 SdHoareTripleChecker+Invalid, 6700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1024 IncrementalHoareTripleChecker+Valid, 5675 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-02-24 04:43:09,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2271 Valid, 2159 Invalid, 6700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1024 Valid, 5675 Invalid, 1 Unknown, 0 Unchecked, 16.2s Time] [2022-02-24 04:43:09,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9264 states. [2022-02-24 04:43:12,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9264 to 8337. [2022-02-24 04:43:12,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8337 states, 6655 states have (on average 1.4216378662659654) internal successors, (9461), 6845 states have internal predecessors, (9461), 1039 states have call successors, (1039), 512 states have call predecessors, (1039), 642 states have return successors, (1773), 1015 states have call predecessors, (1773), 1025 states have call successors, (1773) [2022-02-24 04:43:12,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8337 states to 8337 states and 12273 transitions. [2022-02-24 04:43:12,436 INFO L78 Accepts]: Start accepts. Automaton has 8337 states and 12273 transitions. Word has length 81 [2022-02-24 04:43:12,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:43:12,436 INFO L470 AbstractCegarLoop]: Abstraction has 8337 states and 12273 transitions. [2022-02-24 04:43:12,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 10 states have internal predecessors, (63), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:43:12,437 INFO L276 IsEmpty]: Start isEmpty. Operand 8337 states and 12273 transitions. [2022-02-24 04:43:12,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-02-24 04:43:12,438 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:43:12,438 INFO L514 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:43:12,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-24 04:43:12,438 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:43:12,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:43:12,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1887964299, now seen corresponding path program 7 times [2022-02-24 04:43:12,438 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:43:12,439 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771251554] [2022-02-24 04:43:12,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:43:12,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:43:12,451 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:43:12,451 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:43:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:12,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:43:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:12,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:43:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:13,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-24 04:43:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:13,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:43:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:13,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:43:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:13,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-02-24 04:43:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:13,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-02-24 04:43:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:13,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 04:43:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:43:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:43:13,538 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:43:13,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771251554] [2022-02-24 04:43:13,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [771251554] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:43:13,538 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:43:13,539 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-24 04:43:13,539 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694839136] [2022-02-24 04:43:13,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:43:13,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-24 04:43:13,539 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:43:13,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-24 04:43:13,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-02-24 04:43:13,540 INFO L87 Difference]: Start difference. First operand 8337 states and 12273 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 11 states have internal predecessors, (64), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:43:24,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:28,761 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:30,869 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:32,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:35,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:37,261 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:39,418 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:41,573 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:43:51,647 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:01,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:44:01,877 INFO L93 Difference]: Finished difference Result 17664 states and 26534 transitions. [2022-02-24 04:44:01,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-24 04:44:01,878 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 11 states have internal predecessors, (64), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 82 [2022-02-24 04:44:01,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:44:01,911 INFO L225 Difference]: With dead ends: 17664 [2022-02-24 04:44:01,911 INFO L226 Difference]: Without dead ends: 9299 [2022-02-24 04:44:01,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=228, Invalid=1032, Unknown=0, NotChecked=0, Total=1260 [2022-02-24 04:44:01,937 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 1809 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 9164 mSolverCounterSat, 763 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 2723 SdHoareTripleChecker+Invalid, 9936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 763 IncrementalHoareTripleChecker+Valid, 9164 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:44:01,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1845 Valid, 2723 Invalid, 9936 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [763 Valid, 9164 Invalid, 9 Unknown, 0 Unchecked, 42.0s Time] [2022-02-24 04:44:01,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9299 states. [2022-02-24 04:44:05,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9299 to 8360. [2022-02-24 04:44:05,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8360 states, 6678 states have (on average 1.4201856843366278) internal successors, (9484), 6868 states have internal predecessors, (9484), 1039 states have call successors, (1039), 512 states have call predecessors, (1039), 642 states have return successors, (1773), 1015 states have call predecessors, (1773), 1025 states have call successors, (1773) [2022-02-24 04:44:05,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8360 states to 8360 states and 12296 transitions. [2022-02-24 04:44:05,068 INFO L78 Accepts]: Start accepts. Automaton has 8360 states and 12296 transitions. Word has length 82 [2022-02-24 04:44:05,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:44:05,068 INFO L470 AbstractCegarLoop]: Abstraction has 8360 states and 12296 transitions. [2022-02-24 04:44:05,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 11 states have internal predecessors, (64), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:44:05,068 INFO L276 IsEmpty]: Start isEmpty. Operand 8360 states and 12296 transitions. [2022-02-24 04:44:05,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-24 04:44:05,069 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:44:05,069 INFO L514 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:44:05,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-24 04:44:05,070 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:44:05,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:44:05,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1700892615, now seen corresponding path program 8 times [2022-02-24 04:44:05,070 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:44:05,070 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289315634] [2022-02-24 04:44:05,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:44:05,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:44:05,082 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:44:05,082 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:44:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:05,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:44:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:05,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:44:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:05,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-24 04:44:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:06,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-02-24 04:44:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:06,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:44:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:06,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-24 04:44:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:06,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-24 04:44:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:06,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 04:44:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:06,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:44:06,289 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:44:06,289 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289315634] [2022-02-24 04:44:06,289 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1289315634] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:44:06,289 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:44:06,289 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-24 04:44:06,289 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167736483] [2022-02-24 04:44:06,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:44:06,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-24 04:44:06,290 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:44:06,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-24 04:44:06,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-02-24 04:44:06,290 INFO L87 Difference]: Start difference. First operand 8360 states and 12296 transitions. Second operand has 20 states, 20 states have (on average 3.25) internal successors, (65), 12 states have internal predecessors, (65), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:44:17,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:19,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:21,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:23,500 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:33,735 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:44:44,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:44:44,139 INFO L93 Difference]: Finished difference Result 17709 states and 26579 transitions. [2022-02-24 04:44:44,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-24 04:44:44,139 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 12 states have internal predecessors, (65), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2022-02-24 04:44:44,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:44:44,170 INFO L225 Difference]: With dead ends: 17709 [2022-02-24 04:44:44,170 INFO L226 Difference]: Without dead ends: 9322 [2022-02-24 04:44:44,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=242, Invalid=1164, Unknown=0, NotChecked=0, Total=1406 [2022-02-24 04:44:44,192 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 1911 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 9792 mSolverCounterSat, 852 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1947 SdHoareTripleChecker+Valid, 2983 SdHoareTripleChecker+Invalid, 10649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 852 IncrementalHoareTripleChecker+Valid, 9792 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2022-02-24 04:44:44,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1947 Valid, 2983 Invalid, 10649 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [852 Valid, 9792 Invalid, 5 Unknown, 0 Unchecked, 31.6s Time] [2022-02-24 04:44:44,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9322 states. [2022-02-24 04:44:47,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9322 to 8383. [2022-02-24 04:44:47,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8383 states, 6701 states have (on average 1.4187434711237128) internal successors, (9507), 6891 states have internal predecessors, (9507), 1039 states have call successors, (1039), 512 states have call predecessors, (1039), 642 states have return successors, (1773), 1015 states have call predecessors, (1773), 1025 states have call successors, (1773) [2022-02-24 04:44:47,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8383 states to 8383 states and 12319 transitions. [2022-02-24 04:44:47,342 INFO L78 Accepts]: Start accepts. Automaton has 8383 states and 12319 transitions. Word has length 83 [2022-02-24 04:44:47,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:44:47,342 INFO L470 AbstractCegarLoop]: Abstraction has 8383 states and 12319 transitions. [2022-02-24 04:44:47,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 12 states have internal predecessors, (65), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:44:47,342 INFO L276 IsEmpty]: Start isEmpty. Operand 8383 states and 12319 transitions. [2022-02-24 04:44:47,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-02-24 04:44:47,343 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:44:47,344 INFO L514 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:44:47,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-24 04:44:47,344 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:44:47,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:44:47,344 INFO L85 PathProgramCache]: Analyzing trace with hash -196637707, now seen corresponding path program 9 times [2022-02-24 04:44:47,344 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:44:47,344 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575079961] [2022-02-24 04:44:47,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:44:47,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:44:47,356 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:44:47,356 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:44:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:47,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:44:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:47,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:44:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:48,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-24 04:44:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:48,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-02-24 04:44:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:48,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:44:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:48,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-24 04:44:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:48,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-02-24 04:44:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:48,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 04:44:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:44:48,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:44:48,457 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:44:48,457 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575079961] [2022-02-24 04:44:48,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1575079961] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:44:48,458 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:44:48,458 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-24 04:44:48,458 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786046686] [2022-02-24 04:44:48,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:44:48,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-24 04:44:48,458 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:44:48,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-24 04:44:48,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2022-02-24 04:44:48,459 INFO L87 Difference]: Start difference. First operand 8383 states and 12319 transitions. Second operand has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 13 states have internal predecessors, (66), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:45:04,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:15,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:45:15,763 INFO L93 Difference]: Finished difference Result 17742 states and 26612 transitions. [2022-02-24 04:45:15,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-24 04:45:15,764 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 13 states have internal predecessors, (66), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2022-02-24 04:45:15,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:45:15,796 INFO L225 Difference]: With dead ends: 17742 [2022-02-24 04:45:15,796 INFO L226 Difference]: Without dead ends: 9333 [2022-02-24 04:45:15,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=256, Invalid=1304, Unknown=0, NotChecked=0, Total=1560 [2022-02-24 04:45:15,819 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1989 mSDsluCounter, 2186 mSDsCounter, 0 mSdLazyCounter, 9050 mSolverCounterSat, 900 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 9951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 9050 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2022-02-24 04:45:15,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2025 Valid, 2890 Invalid, 9951 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [900 Valid, 9050 Invalid, 1 Unknown, 0 Unchecked, 20.8s Time] [2022-02-24 04:45:15,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9333 states. [2022-02-24 04:45:19,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9333 to 8406. [2022-02-24 04:45:19,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8406 states, 6724 states have (on average 1.4173111243307555) internal successors, (9530), 6914 states have internal predecessors, (9530), 1039 states have call successors, (1039), 512 states have call predecessors, (1039), 642 states have return successors, (1773), 1015 states have call predecessors, (1773), 1025 states have call successors, (1773) [2022-02-24 04:45:19,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8406 states to 8406 states and 12342 transitions. [2022-02-24 04:45:19,042 INFO L78 Accepts]: Start accepts. Automaton has 8406 states and 12342 transitions. Word has length 84 [2022-02-24 04:45:19,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:45:19,042 INFO L470 AbstractCegarLoop]: Abstraction has 8406 states and 12342 transitions. [2022-02-24 04:45:19,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 13 states have internal predecessors, (66), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:45:19,042 INFO L276 IsEmpty]: Start isEmpty. Operand 8406 states and 12342 transitions. [2022-02-24 04:45:19,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-02-24 04:45:19,043 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:45:19,044 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:45:19,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-24 04:45:19,044 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:45:19,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:45:19,044 INFO L85 PathProgramCache]: Analyzing trace with hash -809375815, now seen corresponding path program 10 times [2022-02-24 04:45:19,044 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:45:19,044 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312608397] [2022-02-24 04:45:19,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:45:19,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:45:19,056 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:45:19,057 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:45:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:19,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:45:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:19,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:45:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:20,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-24 04:45:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:20,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-24 04:45:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:20,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:45:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:20,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-24 04:45:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:20,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-02-24 04:45:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:20,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 04:45:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:20,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:45:20,674 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:45:20,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312608397] [2022-02-24 04:45:20,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [312608397] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:45:20,674 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:45:20,674 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-24 04:45:20,674 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515639322] [2022-02-24 04:45:20,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:45:20,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-24 04:45:20,674 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:45:20,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-24 04:45:20,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-02-24 04:45:20,675 INFO L87 Difference]: Start difference. First operand 8406 states and 12342 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 14 states have internal predecessors, (67), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:45:32,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-24 04:45:41,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:45:41,432 INFO L93 Difference]: Finished difference Result 17787 states and 26657 transitions. [2022-02-24 04:45:41,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-24 04:45:41,433 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 14 states have internal predecessors, (67), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 85 [2022-02-24 04:45:41,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:45:41,470 INFO L225 Difference]: With dead ends: 17787 [2022-02-24 04:45:41,470 INFO L226 Difference]: Without dead ends: 9356 [2022-02-24 04:45:41,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=270, Invalid=1452, Unknown=0, NotChecked=0, Total=1722 [2022-02-24 04:45:41,493 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 2046 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 5437 mSolverCounterSat, 901 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2082 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 6339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 901 IncrementalHoareTripleChecker+Valid, 5437 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-02-24 04:45:41,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2082 Valid, 1897 Invalid, 6339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [901 Valid, 5437 Invalid, 1 Unknown, 0 Unchecked, 13.9s Time] [2022-02-24 04:45:41,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9356 states. [2022-02-24 04:45:44,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9356 to 8429. [2022-02-24 04:45:44,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8429 states, 6747 states have (on average 1.4158885430561732) internal successors, (9553), 6937 states have internal predecessors, (9553), 1039 states have call successors, (1039), 512 states have call predecessors, (1039), 642 states have return successors, (1773), 1015 states have call predecessors, (1773), 1025 states have call successors, (1773) [2022-02-24 04:45:44,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8429 states to 8429 states and 12365 transitions. [2022-02-24 04:45:44,810 INFO L78 Accepts]: Start accepts. Automaton has 8429 states and 12365 transitions. Word has length 85 [2022-02-24 04:45:44,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:45:44,810 INFO L470 AbstractCegarLoop]: Abstraction has 8429 states and 12365 transitions. [2022-02-24 04:45:44,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 14 states have internal predecessors, (67), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-24 04:45:44,810 INFO L276 IsEmpty]: Start isEmpty. Operand 8429 states and 12365 transitions. [2022-02-24 04:45:44,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-24 04:45:44,812 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:45:44,812 INFO L514 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:45:44,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-24 04:45:44,812 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:45:44,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:45:44,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1670579317, now seen corresponding path program 11 times [2022-02-24 04:45:44,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:45:44,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296386129] [2022-02-24 04:45:44,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:45:44,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:45:44,825 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-02-24 04:45:44,825 INFO L281 tedInterpolationCore]: Could not accelerate. [2022-02-24 04:45:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:45,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:45:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:45,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 04:45:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:46,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-24 04:45:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:46,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-24 04:45:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:46,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-24 04:45:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:46,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-24 04:45:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:46,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-02-24 04:45:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:46,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-24 04:45:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:45:46,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:45:46,718 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:45:46,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296386129] [2022-02-24 04:45:46,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1296386129] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:45:46,719 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:45:46,719 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-24 04:45:46,719 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926680102] [2022-02-24 04:45:46,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:45:46,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-24 04:45:46,719 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:45:46,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-24 04:45:46,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2022-02-24 04:45:46,720 INFO L87 Difference]: Start difference. First operand 8429 states and 12365 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 15 states have internal predecessors, (68), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)