/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 03:00:33,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 03:00:33,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 03:00:33,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-15 03:00:33,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-15 03:00:33,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-15 03:00:33,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-15 03:00:33,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-15 03:00:33,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-15 03:00:33,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-15 03:00:33,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-15 03:00:33,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-15 03:00:33,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-15 03:00:33,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-15 03:00:33,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-15 03:00:33,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-15 03:00:33,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-15 03:00:33,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-15 03:00:33,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-15 03:00:33,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-15 03:00:33,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-15 03:00:33,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-15 03:00:33,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-15 03:00:33,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-15 03:00:33,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-15 03:00:33,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-15 03:00:33,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-15 03:00:33,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-15 03:00:33,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-15 03:00:33,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-15 03:00:33,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-15 03:00:33,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-15 03:00:33,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-15 03:00:33,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-15 03:00:33,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-15 03:00:33,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-15 03:00:33,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-15 03:00:33,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-15 03:00:33,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 03:00:33,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 03:00:33,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 03:00:33,744 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-02-15 03:00:33,750 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 03:00:33,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 03:00:33,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 03:00:33,751 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 03:00:33,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 03:00:33,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 03:00:33,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 03:00:33,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 03:00:33,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 03:00:33,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 03:00:33,751 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 03:00:33,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 03:00:33,752 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 03:00:33,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 03:00:33,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 03:00:33,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 03:00:33,752 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 03:00:33,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 03:00:33,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 03:00:33,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 03:00:33,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 03:00:33,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 03:00:33,753 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-15 03:00:33,753 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 03:00:33,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 03:00:33,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 03:00:33,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 03:00:33,996 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 03:00:33,996 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 03:00:33,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c [2022-02-15 03:00:34,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21b73a5a9/bc0d09d4d0f04bf6bf829e9c9cc01e35/FLAGa54b65c64 [2022-02-15 03:00:34,720 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 03:00:34,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c [2022-02-15 03:00:34,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21b73a5a9/bc0d09d4d0f04bf6bf829e9c9cc01e35/FLAGa54b65c64 [2022-02-15 03:00:34,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21b73a5a9/bc0d09d4d0f04bf6bf829e9c9cc01e35 [2022-02-15 03:00:34,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 03:00:34,839 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 03:00:34,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 03:00:34,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 03:00:34,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 03:00:34,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 03:00:34" (1/1) ... [2022-02-15 03:00:34,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51954903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:34, skipping insertion in model container [2022-02-15 03:00:34,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 03:00:34" (1/1) ... [2022-02-15 03:00:34,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 03:00:34,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 03:00:35,392 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c[76734,76747] [2022-02-15 03:00:35,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 03:00:35,744 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 03:00:35,793 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c[76734,76747] [2022-02-15 03:00:36,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 03:00:36,050 INFO L208 MainTranslator]: Completed translation [2022-02-15 03:00:36,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:36 WrapperNode [2022-02-15 03:00:36,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 03:00:36,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 03:00:36,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 03:00:36,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 03:00:36,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:36" (1/1) ... [2022-02-15 03:00:36,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:36" (1/1) ... [2022-02-15 03:00:36,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:36" (1/1) ... [2022-02-15 03:00:36,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:36" (1/1) ... [2022-02-15 03:00:36,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:36" (1/1) ... [2022-02-15 03:00:36,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:36" (1/1) ... [2022-02-15 03:00:36,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:36" (1/1) ... [2022-02-15 03:00:36,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 03:00:36,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 03:00:36,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 03:00:36,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 03:00:36,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:36" (1/1) ... [2022-02-15 03:00:36,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 03:00:36,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 03:00:36,352 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-15 03:00:36,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-15 03:00:36,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 03:00:36,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 03:00:36,409 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 03:00:36,409 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-02-15 03:00:36,409 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-02-15 03:00:36,409 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-02-15 03:00:36,409 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-02-15 03:00:36,409 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyUnload [2022-02-15 03:00:36,409 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyAddDevice [2022-02-15 03:00:36,409 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConfigCallBack [2022-02-15 03:00:36,409 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-02-15 03:00:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-02-15 03:00:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-02-15 03:00:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-02-15 03:00:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-02-15 03:00:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-02-15 03:00:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-02-15 03:00:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPower [2022-02-15 03:00:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyReadWrite [2022-02-15 03:00:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInterpretError [2022-02-15 03:00:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFinishOperation [2022-02-15 03:00:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure FlStartDrive [2022-02-15 03:00:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDatarateSpecifyConfigure [2022-02-15 03:00:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure FlRecalibrateDrive [2022-02-15 03:00:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDetermineMediaType [2022-02-15 03:00:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAllocateIoBuffer [2022-02-15 03:00:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFreeIoBuffer [2022-02-15 03:00:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyThread [2022-02-15 03:00:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConsolidateMediaTypeWithBootSector [2022-02-15 03:00:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckBootSector [2022-02-15 03:00:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWriteTrack [2022-02-15 03:00:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWrite [2022-02-15 03:00:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFormat [2022-02-15 03:00:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2022-02-15 03:00:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure FlIssueCommand [2022-02-15 03:00:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInitializeControllerHardware [2022-02-15 03:00:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-02-15 03:00:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure FlHdbit [2022-02-15 03:00:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-02-15 03:00:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCancelQueuedRequest [2022-02-15 03:00:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-02-15 03:00:36,412 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-02-15 03:00:36,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 03:00:36,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-02-15 03:00:36,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-02-15 03:00:36,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-02-15 03:00:36,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-02-15 03:00:36,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-02-15 03:00:36,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-02-15 03:00:36,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-02-15 03:00:36,412 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-02-15 03:00:36,412 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-02-15 03:00:36,412 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-02-15 03:00:36,412 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-02-15 03:00:36,412 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-02-15 03:00:36,412 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-02-15 03:00:36,412 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-02-15 03:00:36,413 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-02-15 03:00:36,413 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-02-15 03:00:36,413 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-02-15 03:00:36,413 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-02-15 03:00:36,413 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-02-15 03:00:36,413 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-02-15 03:00:36,413 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-02-15 03:00:36,413 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-02-15 03:00:36,413 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-02-15 03:00:36,414 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-02-15 03:00:36,414 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-02-15 03:00:36,414 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-02-15 03:00:36,414 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-02-15 03:00:36,414 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-02-15 03:00:36,414 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-02-15 03:00:36,414 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-02-15 03:00:36,414 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-02-15 03:00:36,415 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-02-15 03:00:36,415 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-02-15 03:00:36,415 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-02-15 03:00:36,415 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-02-15 03:00:36,415 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-02-15 03:00:36,416 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-02-15 03:00:36,416 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-02-15 03:00:36,416 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-02-15 03:00:36,416 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-02-15 03:00:36,417 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-02-15 03:00:36,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-02-15 03:00:36,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-02-15 03:00:36,417 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-02-15 03:00:36,417 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-02-15 03:00:36,418 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-02-15 03:00:36,418 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-02-15 03:00:36,418 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-02-15 03:00:36,418 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-02-15 03:00:36,418 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-02-15 03:00:36,418 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-02-15 03:00:36,418 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-02-15 03:00:36,418 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-02-15 03:00:36,418 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-02-15 03:00:36,418 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-02-15 03:00:36,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-02-15 03:00:36,419 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-02-15 03:00:36,419 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-02-15 03:00:36,419 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-02-15 03:00:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 03:00:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 03:00:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 03:00:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 03:00:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-02-15 03:00:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-15 03:00:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-02-15 03:00:36,420 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2022-02-15 03:00:36,420 INFO L130 BoogieDeclarations]: Found specification of procedure swprintf [2022-02-15 03:00:36,420 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-02-15 03:00:36,420 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-02-15 03:00:36,421 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-02-15 03:00:36,421 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-02-15 03:00:36,421 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-02-15 03:00:36,421 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-02-15 03:00:36,421 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-02-15 03:00:36,421 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-02-15 03:00:36,421 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-02-15 03:00:36,422 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-02-15 03:00:36,422 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-02-15 03:00:36,422 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-02-15 03:00:36,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 03:00:36,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 03:00:36,422 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-02-15 03:00:36,422 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-02-15 03:00:36,422 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-02-15 03:00:36,422 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-02-15 03:00:36,422 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-02-15 03:00:36,422 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-02-15 03:00:36,423 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-02-15 03:00:36,423 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-02-15 03:00:36,423 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-02-15 03:00:36,423 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-02-15 03:00:36,423 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-02-15 03:00:36,423 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-02-15 03:00:36,423 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-02-15 03:00:36,424 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-02-15 03:00:36,424 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-02-15 03:00:36,425 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-02-15 03:00:36,427 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-02-15 03:00:36,427 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-02-15 03:00:36,429 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-02-15 03:00:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-02-15 03:00:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-02-15 03:00:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-02-15 03:00:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-02-15 03:00:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-02-15 03:00:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-02-15 03:00:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-02-15 03:00:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-02-15 03:00:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-02-15 03:00:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-02-15 03:00:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-02-15 03:00:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-02-15 03:00:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-02-15 03:00:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-02-15 03:00:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-02-15 03:00:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-02-15 03:00:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-02-15 03:00:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-02-15 03:00:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-02-15 03:00:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-02-15 03:00:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-02-15 03:00:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-02-15 03:00:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-02-15 03:00:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-02-15 03:00:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-02-15 03:00:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-02-15 03:00:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-02-15 03:00:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-02-15 03:00:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyUnload [2022-02-15 03:00:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure FlConfigCallBack [2022-02-15 03:00:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure FlInitializeControllerHardware [2022-02-15 03:00:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-02-15 03:00:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-02-15 03:00:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyReadWrite [2022-02-15 03:00:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure FlRecalibrateDrive [2022-02-15 03:00:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure FlDatarateSpecifyConfigure [2022-02-15 03:00:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure FlStartDrive [2022-02-15 03:00:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure FlFinishOperation [2022-02-15 03:00:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure FlDetermineMediaType [2022-02-15 03:00:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyThread [2022-02-15 03:00:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWrite [2022-02-15 03:00:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure FlFormat [2022-02-15 03:00:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure FlIssueCommand [2022-02-15 03:00:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2022-02-15 03:00:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-02-15 03:00:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure FlInterpretError [2022-02-15 03:00:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure FlAllocateIoBuffer [2022-02-15 03:00:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure FlFreeIoBuffer [2022-02-15 03:00:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure FlConsolidateMediaTypeWithBootSector [2022-02-15 03:00:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckBootSector [2022-02-15 03:00:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWriteTrack [2022-02-15 03:00:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-02-15 03:00:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyAddDevice [2022-02-15 03:00:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-02-15 03:00:36,433 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPower [2022-02-15 03:00:36,433 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-02-15 03:00:36,433 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-02-15 03:00:36,433 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-02-15 03:00:36,433 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-02-15 03:00:36,433 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCancelQueuedRequest [2022-02-15 03:00:36,433 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-02-15 03:00:36,433 INFO L130 BoogieDeclarations]: Found specification of procedure FlHdbit [2022-02-15 03:00:36,433 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-02-15 03:00:36,433 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-02-15 03:00:36,433 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-02-15 03:00:36,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-02-15 03:00:36,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-02-15 03:00:36,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-02-15 03:00:36,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-15 03:00:36,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 03:00:36,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-02-15 03:00:36,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-02-15 03:00:36,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-02-15 03:00:36,434 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-02-15 03:00:36,434 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 03:00:36,434 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-02-15 03:00:36,434 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-02-15 03:00:36,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 03:00:36,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 03:00:36,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 03:00:36,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-02-15 03:00:36,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-02-15 03:00:36,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-02-15 03:00:36,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-02-15 03:00:37,057 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 03:00:37,061 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 03:00:37,089 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:37,140 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:37,140 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:37,141 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:37,145 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:37,145 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:38,613 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:38,617 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:38,617 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:38,618 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:38,624 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:38,625 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:38,627 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:38,633 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:38,633 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:38,671 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:38,676 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:38,677 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:38,677 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:38,684 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:38,684 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:38,684 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:38,692 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:38,692 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:38,734 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:38,796 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-02-15 03:00:38,796 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-02-15 03:00:38,856 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:38,860 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:38,860 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:38,861 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:38,864 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:38,864 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:38,864 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:38,870 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:38,870 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:38,879 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:38,883 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:38,883 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:38,884 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:38,887 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:38,887 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:43,882 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:43,894 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-15 03:00:43,894 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-15 03:00:43,933 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:44,339 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-02-15 03:00:44,339 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-02-15 03:00:44,612 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:44,615 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:44,615 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:44,693 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:44,716 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-02-15 03:00:44,716 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-02-15 03:00:44,718 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:44,824 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-02-15 03:00:44,824 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-02-15 03:00:44,825 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:44,868 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-02-15 03:00:44,868 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-02-15 03:00:55,158 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:55,161 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:55,161 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:55,253 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:55,256 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:55,256 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:55,275 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:57,606 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-02-15 03:00:57,607 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-02-15 03:00:57,642 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:57,826 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-02-15 03:00:57,826 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-02-15 03:00:57,827 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:57,840 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-02-15 03:00:57,840 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-02-15 03:00:57,840 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:57,866 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-02-15 03:00:57,866 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-02-15 03:00:57,869 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:57,876 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-02-15 03:00:57,876 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-02-15 03:00:57,914 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:57,918 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:57,918 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:57,927 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:57,930 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-02-15 03:00:57,931 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-02-15 03:00:57,931 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:00:57,991 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume !false; [2022-02-15 03:00:57,991 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume false; [2022-02-15 03:00:58,031 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-02-15 03:01:00,378 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2022-02-15 03:01:00,378 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2022-02-15 03:01:00,424 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 03:01:00,451 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 03:01:00,451 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2022-02-15 03:01:00,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 03:01:00 BoogieIcfgContainer [2022-02-15 03:01:00,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 03:01:00,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 03:01:00,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 03:01:00,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 03:01:00,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 03:00:34" (1/3) ... [2022-02-15 03:01:00,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e282f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 03:01:00, skipping insertion in model container [2022-02-15 03:01:00,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 03:00:36" (2/3) ... [2022-02-15 03:01:00,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e282f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 03:01:00, skipping insertion in model container [2022-02-15 03:01:00,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 03:01:00" (3/3) ... [2022-02-15 03:01:00,465 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-1.c [2022-02-15 03:01:00,469 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 03:01:00,469 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 03:01:00,507 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 03:01:00,516 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-02-15 03:01:00,516 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 03:01:00,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 1449 states, 1151 states have (on average 1.523023457862728) internal successors, (1753), 1192 states have internal predecessors, (1753), 221 states have call successors, (221), 72 states have call predecessors, (221), 72 states have return successors, (221), 215 states have call predecessors, (221), 221 states have call successors, (221) [2022-02-15 03:01:00,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-15 03:01:00,563 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:01:00,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:01:00,565 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:01:00,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:01:00,569 INFO L85 PathProgramCache]: Analyzing trace with hash 760330439, now seen corresponding path program 1 times [2022-02-15 03:01:00,574 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:01:00,574 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087685842] [2022-02-15 03:01:00,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:01:00,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:01:00,679 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:01:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:01,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:01:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:01,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:01:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:01,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:01:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:01,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:01:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:01,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:01:01,323 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:01:01,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087685842] [2022-02-15 03:01:01,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2087685842] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:01:01,324 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:01:01,324 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-15 03:01:01,325 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728776824] [2022-02-15 03:01:01,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:01:01,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-15 03:01:01,329 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:01:01,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-15 03:01:01,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-02-15 03:01:01,353 INFO L87 Difference]: Start difference. First operand has 1449 states, 1151 states have (on average 1.523023457862728) internal successors, (1753), 1192 states have internal predecessors, (1753), 221 states have call successors, (221), 72 states have call predecessors, (221), 72 states have return successors, (221), 215 states have call predecessors, (221), 221 states have call successors, (221) Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-15 03:01:06,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:08,356 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:12,947 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:13,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:01:13,840 INFO L93 Difference]: Finished difference Result 1399 states and 2144 transitions. [2022-02-15 03:01:13,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 03:01:13,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2022-02-15 03:01:13,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:01:13,864 INFO L225 Difference]: With dead ends: 1399 [2022-02-15 03:01:13,865 INFO L226 Difference]: Without dead ends: 833 [2022-02-15 03:01:13,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-02-15 03:01:13,885 INFO L933 BasicCegarLoop]: 728 mSDtfsCounter, 1822 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 917 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 3355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 917 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-02-15 03:01:13,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1850 Valid, 1207 Invalid, 3355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [917 Valid, 2435 Invalid, 3 Unknown, 0 Unchecked, 11.4s Time] [2022-02-15 03:01:13,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-02-15 03:01:14,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 651. [2022-02-15 03:01:14,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 491 states have (on average 1.4256619144602851) internal successors, (700), 523 states have internal predecessors, (700), 115 states have call successors, (115), 46 states have call predecessors, (115), 44 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-02-15 03:01:14,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 906 transitions. [2022-02-15 03:01:14,125 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 906 transitions. Word has length 37 [2022-02-15 03:01:14,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:01:14,125 INFO L470 AbstractCegarLoop]: Abstraction has 651 states and 906 transitions. [2022-02-15 03:01:14,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-15 03:01:14,126 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 906 transitions. [2022-02-15 03:01:14,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-02-15 03:01:14,127 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:01:14,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:01:14,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 03:01:14,128 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:01:14,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:01:14,128 INFO L85 PathProgramCache]: Analyzing trace with hash -2031942295, now seen corresponding path program 1 times [2022-02-15 03:01:14,128 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:01:14,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756396429] [2022-02-15 03:01:14,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:01:14,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:01:14,142 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:01:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:14,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:01:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:14,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:01:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:14,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:01:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:14,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:01:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:14,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:14,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:01:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:14,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:01:14,742 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:01:14,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756396429] [2022-02-15 03:01:14,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [756396429] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:01:14,743 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:01:14,743 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 03:01:14,743 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397311598] [2022-02-15 03:01:14,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:01:14,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 03:01:14,744 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:01:14,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 03:01:14,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-15 03:01:14,745 INFO L87 Difference]: Start difference. First operand 651 states and 906 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 03:01:21,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:24,336 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:28,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:01:28,172 INFO L93 Difference]: Finished difference Result 1886 states and 2773 transitions. [2022-02-15 03:01:28,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 03:01:28,173 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2022-02-15 03:01:28,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:01:28,181 INFO L225 Difference]: With dead ends: 1886 [2022-02-15 03:01:28,181 INFO L226 Difference]: Without dead ends: 1423 [2022-02-15 03:01:28,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-02-15 03:01:28,184 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 2981 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 3570 mSolverCounterSat, 1115 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3019 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 4687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1115 IncrementalHoareTripleChecker+Valid, 3570 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-02-15 03:01:28,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3019 Valid, 1640 Invalid, 4687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1115 Valid, 3570 Invalid, 2 Unknown, 0 Unchecked, 12.1s Time] [2022-02-15 03:01:28,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2022-02-15 03:01:28,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1195. [2022-02-15 03:01:28,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 925 states have (on average 1.4086486486486487) internal successors, (1303), 956 states have internal predecessors, (1303), 177 states have call successors, (177), 79 states have call predecessors, (177), 92 states have return successors, (237), 169 states have call predecessors, (237), 161 states have call successors, (237) [2022-02-15 03:01:28,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1717 transitions. [2022-02-15 03:01:28,320 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1717 transitions. Word has length 42 [2022-02-15 03:01:28,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:01:28,320 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 1717 transitions. [2022-02-15 03:01:28,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 03:01:28,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1717 transitions. [2022-02-15 03:01:28,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-15 03:01:28,329 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:01:28,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:01:28,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 03:01:28,329 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:01:28,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:01:28,330 INFO L85 PathProgramCache]: Analyzing trace with hash 2071284277, now seen corresponding path program 1 times [2022-02-15 03:01:28,330 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:01:28,330 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256748423] [2022-02-15 03:01:28,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:01:28,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:01:28,340 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:01:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:28,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:01:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:28,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:01:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:28,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:01:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:28,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:01:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:28,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:28,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:01:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:28,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-15 03:01:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:28,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:01:28,933 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:01:28,933 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256748423] [2022-02-15 03:01:28,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1256748423] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:01:28,934 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:01:28,934 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 03:01:28,934 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560735873] [2022-02-15 03:01:28,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:01:28,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 03:01:28,934 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:01:28,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 03:01:28,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-15 03:01:28,935 INFO L87 Difference]: Start difference. First operand 1195 states and 1717 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-15 03:01:35,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:38,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:01:38,965 INFO L93 Difference]: Finished difference Result 2186 states and 3260 transitions. [2022-02-15 03:01:38,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 03:01:38,966 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2022-02-15 03:01:38,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:01:38,976 INFO L225 Difference]: With dead ends: 2186 [2022-02-15 03:01:38,976 INFO L226 Difference]: Without dead ends: 2168 [2022-02-15 03:01:38,977 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 [2022-02-15 03:01:38,982 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 2910 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 3409 mSolverCounterSat, 991 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2966 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 4401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 991 IncrementalHoareTripleChecker+Valid, 3409 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-02-15 03:01:38,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2966 Valid, 1372 Invalid, 4401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [991 Valid, 3409 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-02-15 03:01:38,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2022-02-15 03:01:39,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 1838. [2022-02-15 03:01:39,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1435 states have (on average 1.427177700348432) internal successors, (2048), 1486 states have internal predecessors, (2048), 261 states have call successors, (261), 121 states have call predecessors, (261), 141 states have return successors, (375), 244 states have call predecessors, (375), 245 states have call successors, (375) [2022-02-15 03:01:39,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2684 transitions. [2022-02-15 03:01:39,235 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2684 transitions. Word has length 54 [2022-02-15 03:01:39,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:01:39,236 INFO L470 AbstractCegarLoop]: Abstraction has 1838 states and 2684 transitions. [2022-02-15 03:01:39,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-15 03:01:39,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2684 transitions. [2022-02-15 03:01:39,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-15 03:01:39,240 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:01:39,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:01:39,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 03:01:39,240 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:01:39,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:01:39,240 INFO L85 PathProgramCache]: Analyzing trace with hash 546834136, now seen corresponding path program 1 times [2022-02-15 03:01:39,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:01:39,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796613671] [2022-02-15 03:01:39,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:01:39,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:01:39,255 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:01:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:39,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:01:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:39,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:01:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:39,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:01:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:39,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:01:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:39,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:39,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:01:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:01:39,816 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:01:39,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796613671] [2022-02-15 03:01:39,819 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [796613671] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:01:39,819 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:01:39,819 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 03:01:39,819 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912024450] [2022-02-15 03:01:39,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:01:39,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 03:01:39,820 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:01:39,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 03:01:39,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-15 03:01:39,821 INFO L87 Difference]: Start difference. First operand 1838 states and 2684 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 03:01:47,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:01:52,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:01:52,007 INFO L93 Difference]: Finished difference Result 3657 states and 5559 transitions. [2022-02-15 03:01:52,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 03:01:52,008 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-02-15 03:01:52,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:01:52,043 INFO L225 Difference]: With dead ends: 3657 [2022-02-15 03:01:52,043 INFO L226 Difference]: Without dead ends: 3654 [2022-02-15 03:01:52,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-02-15 03:01:52,050 INFO L933 BasicCegarLoop]: 1117 mSDtfsCounter, 2060 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 4326 mSolverCounterSat, 836 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2100 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 5163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 836 IncrementalHoareTripleChecker+Valid, 4326 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:01:52,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2100 Valid, 1847 Invalid, 5163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [836 Valid, 4326 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2022-02-15 03:01:52,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2022-02-15 03:01:52,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 2949. [2022-02-15 03:01:52,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2337 states have (on average 1.4394522892597348) internal successors, (3364), 2396 states have internal predecessors, (3364), 382 states have call successors, (382), 202 states have call predecessors, (382), 229 states have return successors, (577), 364 states have call predecessors, (577), 366 states have call successors, (577) [2022-02-15 03:01:52,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 4323 transitions. [2022-02-15 03:01:52,547 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 4323 transitions. Word has length 55 [2022-02-15 03:01:52,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:01:52,548 INFO L470 AbstractCegarLoop]: Abstraction has 2949 states and 4323 transitions. [2022-02-15 03:01:52,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 03:01:52,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 4323 transitions. [2022-02-15 03:01:52,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-02-15 03:01:52,549 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:01:52,549 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:01:52,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 03:01:52,550 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:01:52,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:01:52,550 INFO L85 PathProgramCache]: Analyzing trace with hash -893598350, now seen corresponding path program 1 times [2022-02-15 03:01:52,550 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:01:52,550 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003154913] [2022-02-15 03:01:52,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:01:52,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:01:52,563 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:01:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:52,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:01:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:52,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:01:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:52,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:01:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:53,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:01:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:53,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:01:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:53,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:01:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:01:53,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:01:53,092 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:01:53,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003154913] [2022-02-15 03:01:53,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2003154913] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:01:53,092 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:01:53,092 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 03:01:53,092 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694691302] [2022-02-15 03:01:53,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:01:53,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 03:01:53,093 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:01:53,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 03:01:53,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-15 03:01:53,093 INFO L87 Difference]: Start difference. First operand 2949 states and 4323 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 03:01:59,720 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:01,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:02:01,304 INFO L93 Difference]: Finished difference Result 3468 states and 5241 transitions. [2022-02-15 03:02:01,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 03:02:01,305 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-02-15 03:02:01,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:02:01,330 INFO L225 Difference]: With dead ends: 3468 [2022-02-15 03:02:01,330 INFO L226 Difference]: Without dead ends: 3464 [2022-02-15 03:02:01,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-02-15 03:02:01,349 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 1926 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 783 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 3224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 783 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-02-15 03:02:01,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1954 Valid, 1233 Invalid, 3224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [783 Valid, 2440 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-02-15 03:02:01,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2022-02-15 03:02:01,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 2974. [2022-02-15 03:02:01,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2363 states have (on average 1.4401184934405418) internal successors, (3403), 2418 states have internal predecessors, (3403), 381 states have call successors, (381), 202 states have call predecessors, (381), 229 states have return successors, (575), 365 states have call predecessors, (575), 365 states have call successors, (575) [2022-02-15 03:02:01,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 4359 transitions. [2022-02-15 03:02:01,816 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 4359 transitions. Word has length 55 [2022-02-15 03:02:01,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:02:01,818 INFO L470 AbstractCegarLoop]: Abstraction has 2974 states and 4359 transitions. [2022-02-15 03:02:01,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-02-15 03:02:01,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 4359 transitions. [2022-02-15 03:02:01,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-15 03:02:01,820 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:02:01,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:02:01,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 03:02:01,820 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:02:01,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:02:01,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1696705075, now seen corresponding path program 1 times [2022-02-15 03:02:01,821 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:02:01,821 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513781521] [2022-02-15 03:02:01,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:02:01,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:02:01,831 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:02:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:02,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:02:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:02,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:02:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:02,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:02:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:02,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:02:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:02,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:02:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:02,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:02:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:02,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 03:02:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:02,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:02:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:02,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:02:02,334 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:02:02,334 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513781521] [2022-02-15 03:02:02,334 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [513781521] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:02:02,334 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:02:02,334 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 03:02:02,334 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311452759] [2022-02-15 03:02:02,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:02:02,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 03:02:02,336 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:02:02,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 03:02:02,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-15 03:02:02,336 INFO L87 Difference]: Start difference. First operand 2974 states and 4359 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:02:11,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:15,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:19,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:02:19,848 INFO L93 Difference]: Finished difference Result 4254 states and 6463 transitions. [2022-02-15 03:02:19,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 03:02:19,849 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 [2022-02-15 03:02:19,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:02:19,901 INFO L225 Difference]: With dead ends: 4254 [2022-02-15 03:02:19,901 INFO L226 Difference]: Without dead ends: 4246 [2022-02-15 03:02:19,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 03:02:19,920 INFO L933 BasicCegarLoop]: 1005 mSDtfsCounter, 3485 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 5607 mSolverCounterSat, 1605 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3534 SdHoareTripleChecker+Valid, 1903 SdHoareTripleChecker+Invalid, 7214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1605 IncrementalHoareTripleChecker+Valid, 5607 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-02-15 03:02:19,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3534 Valid, 1903 Invalid, 7214 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1605 Valid, 5607 Invalid, 2 Unknown, 0 Unchecked, 14.8s Time] [2022-02-15 03:02:19,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4246 states. [2022-02-15 03:02:20,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4246 to 3598. [2022-02-15 03:02:20,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 2861 states have (on average 1.4435512058720728) internal successors, (4130), 2928 states have internal predecessors, (4130), 458 states have call successors, (458), 238 states have call predecessors, (458), 278 states have return successors, (709), 449 states have call predecessors, (709), 442 states have call successors, (709) [2022-02-15 03:02:20,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 5297 transitions. [2022-02-15 03:02:20,601 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 5297 transitions. Word has length 57 [2022-02-15 03:02:20,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:02:20,601 INFO L470 AbstractCegarLoop]: Abstraction has 3598 states and 5297 transitions. [2022-02-15 03:02:20,601 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) [2022-02-15 03:02:20,601 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 5297 transitions. [2022-02-15 03:02:20,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-15 03:02:20,602 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:02:20,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:02:20,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 03:02:20,603 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:02:20,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:02:20,603 INFO L85 PathProgramCache]: Analyzing trace with hash -582745306, now seen corresponding path program 1 times [2022-02-15 03:02:20,603 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:02:20,603 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276149579] [2022-02-15 03:02:20,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:02:20,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:02:20,615 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:02:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:20,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:02:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:20,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:02:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:20,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:02:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:21,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:02:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:21,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:02:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:21,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:02:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:21,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-15 03:02:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:02:21,098 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:02:21,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276149579] [2022-02-15 03:02:21,099 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1276149579] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:02:21,099 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:02:21,099 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-15 03:02:21,099 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095728759] [2022-02-15 03:02:21,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:02:21,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-15 03:02:21,099 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:02:21,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-15 03:02:21,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-02-15 03:02:21,100 INFO L87 Difference]: Start difference. First operand 3598 states and 5297 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-15 03:02:25,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:29,600 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:35,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:02:35,135 INFO L93 Difference]: Finished difference Result 11208 states and 17196 transitions. [2022-02-15 03:02:35,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 03:02:35,135 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2022-02-15 03:02:35,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:02:35,185 INFO L225 Difference]: With dead ends: 11208 [2022-02-15 03:02:35,185 INFO L226 Difference]: Without dead ends: 7864 [2022-02-15 03:02:35,199 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 [2022-02-15 03:02:35,200 INFO L933 BasicCegarLoop]: 893 mSDtfsCounter, 3290 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 3251 mSolverCounterSat, 1245 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3363 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 4498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 3251 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:02:35,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3363 Valid, 1587 Invalid, 4498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1245 Valid, 3251 Invalid, 2 Unknown, 0 Unchecked, 11.6s Time] [2022-02-15 03:02:35,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7864 states. [2022-02-15 03:02:36,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7864 to 6946. [2022-02-15 03:02:36,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6946 states, 5542 states have (on average 1.453446409238542) internal successors, (8055), 5692 states have internal predecessors, (8055), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:02:36,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 10479 transitions. [2022-02-15 03:02:36,409 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 10479 transitions. Word has length 57 [2022-02-15 03:02:36,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:02:36,409 INFO L470 AbstractCegarLoop]: Abstraction has 6946 states and 10479 transitions. [2022-02-15 03:02:36,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-02-15 03:02:36,410 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 10479 transitions. [2022-02-15 03:02:36,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-15 03:02:36,411 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:02:36,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:02:36,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 03:02:36,411 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:02:36,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:02:36,411 INFO L85 PathProgramCache]: Analyzing trace with hash -466129244, now seen corresponding path program 1 times [2022-02-15 03:02:36,411 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:02:36,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827090128] [2022-02-15 03:02:36,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:02:36,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:02:36,421 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:02:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:36,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:02:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:36,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:02:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:36,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:02:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:36,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:02:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:36,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:02:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:36,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:02:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:02:36,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:02:36,877 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:02:36,878 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827090128] [2022-02-15 03:02:36,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [827090128] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:02:36,878 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:02:36,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 03:02:36,878 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719200932] [2022-02-15 03:02:36,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:02:36,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 03:02:36,878 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:02:36,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 03:02:36,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-02-15 03:02:36,879 INFO L87 Difference]: Start difference. First operand 6946 states and 10479 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-15 03:02:46,481 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:50,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:52,748 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:02:59,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:02:59,077 INFO L93 Difference]: Finished difference Result 14677 states and 22415 transitions. [2022-02-15 03:02:59,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 03:02:59,077 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-02-15 03:02:59,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:02:59,111 INFO L225 Difference]: With dead ends: 14677 [2022-02-15 03:02:59,111 INFO L226 Difference]: Without dead ends: 8095 [2022-02-15 03:02:59,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 03:02:59,133 INFO L933 BasicCegarLoop]: 899 mSDtfsCounter, 5146 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 5509 mSolverCounterSat, 2192 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5190 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 7704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2192 IncrementalHoareTripleChecker+Valid, 5509 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-02-15 03:02:59,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5190 Valid, 1785 Invalid, 7704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2192 Valid, 5509 Invalid, 3 Unknown, 0 Unchecked, 17.8s Time] [2022-02-15 03:02:59,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8095 states. [2022-02-15 03:03:00,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8095 to 6937. [2022-02-15 03:03:00,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 5533 states have (on average 1.452015181637448) internal successors, (8034), 5683 states have internal predecessors, (8034), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:03:00,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10458 transitions. [2022-02-15 03:03:00,447 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10458 transitions. Word has length 56 [2022-02-15 03:03:00,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:03:00,449 INFO L470 AbstractCegarLoop]: Abstraction has 6937 states and 10458 transitions. [2022-02-15 03:03:00,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-02-15 03:03:00,449 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10458 transitions. [2022-02-15 03:03:00,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-15 03:03:00,450 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:03:00,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:03:00,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 03:03:00,451 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:03:00,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:03:00,451 INFO L85 PathProgramCache]: Analyzing trace with hash 613167468, now seen corresponding path program 1 times [2022-02-15 03:03:00,451 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:03:00,451 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284976689] [2022-02-15 03:03:00,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:03:00,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:03:00,461 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:03:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:00,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:03:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:00,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:03:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:00,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:03:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:00,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:03:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:00,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:00,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:03:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:00,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 03:03:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:01,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:01,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:03:01,019 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:03:01,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284976689] [2022-02-15 03:03:01,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1284976689] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:03:01,021 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:03:01,022 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 03:03:01,022 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846103163] [2022-02-15 03:03:01,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:03:01,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 03:03:01,023 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:03:01,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 03:03:01,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-15 03:03:01,024 INFO L87 Difference]: Start difference. First operand 6937 states and 10458 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:03:09,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:14,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:18,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:03:18,821 INFO L93 Difference]: Finished difference Result 7820 states and 12070 transitions. [2022-02-15 03:03:18,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 03:03:18,838 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2022-02-15 03:03:18,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:03:18,878 INFO L225 Difference]: With dead ends: 7820 [2022-02-15 03:03:18,878 INFO L226 Difference]: Without dead ends: 7815 [2022-02-15 03:03:18,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 03:03:18,887 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 3648 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 4721 mSolverCounterSat, 1704 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3698 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 6427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1704 IncrementalHoareTripleChecker+Valid, 4721 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:03:18,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3698 Valid, 1777 Invalid, 6427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1704 Valid, 4721 Invalid, 2 Unknown, 0 Unchecked, 13.6s Time] [2022-02-15 03:03:18,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7815 states. [2022-02-15 03:03:20,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7815 to 6937. [2022-02-15 03:03:20,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 5533 states have (on average 1.4518344478583047) internal successors, (8033), 5683 states have internal predecessors, (8033), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:03:20,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10457 transitions. [2022-02-15 03:03:20,550 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10457 transitions. Word has length 58 [2022-02-15 03:03:20,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:03:20,550 INFO L470 AbstractCegarLoop]: Abstraction has 6937 states and 10457 transitions. [2022-02-15 03:03:20,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:03:20,551 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10457 transitions. [2022-02-15 03:03:20,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-15 03:03:20,552 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:03:20,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:03:20,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 03:03:20,552 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:03:20,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:03:20,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1929708227, now seen corresponding path program 1 times [2022-02-15 03:03:20,552 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:03:20,552 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985504991] [2022-02-15 03:03:20,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:03:20,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:03:20,562 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:03:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:20,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:03:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:20,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:03:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:20,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:03:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:20,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:03:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:21,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:21,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:03:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:21,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-15 03:03:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:21,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:21,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:03:21,130 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:03:21,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985504991] [2022-02-15 03:03:21,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1985504991] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:03:21,130 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:03:21,131 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 03:03:21,131 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124276589] [2022-02-15 03:03:21,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:03:21,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 03:03:21,131 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:03:21,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 03:03:21,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-15 03:03:21,133 INFO L87 Difference]: Start difference. First operand 6937 states and 10457 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:03:26,597 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:30,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:03:34,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:03:34,915 INFO L93 Difference]: Finished difference Result 14740 states and 22518 transitions. [2022-02-15 03:03:34,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 03:03:34,916 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2022-02-15 03:03:34,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:03:34,944 INFO L225 Difference]: With dead ends: 14740 [2022-02-15 03:03:34,944 INFO L226 Difference]: Without dead ends: 7831 [2022-02-15 03:03:34,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2022-02-15 03:03:34,970 INFO L933 BasicCegarLoop]: 699 mSDtfsCounter, 1906 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 4677 mSolverCounterSat, 821 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1938 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 5500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 821 IncrementalHoareTripleChecker+Valid, 4677 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-02-15 03:03:34,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1938 Valid, 1813 Invalid, 5500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [821 Valid, 4677 Invalid, 2 Unknown, 0 Unchecked, 11.2s Time] [2022-02-15 03:03:34,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7831 states. [2022-02-15 03:03:36,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7831 to 6937. [2022-02-15 03:03:36,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 5533 states have (on average 1.4516537140791614) internal successors, (8032), 5683 states have internal predecessors, (8032), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:03:36,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10456 transitions. [2022-02-15 03:03:36,464 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10456 transitions. Word has length 58 [2022-02-15 03:03:36,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:03:36,464 INFO L470 AbstractCegarLoop]: Abstraction has 6937 states and 10456 transitions. [2022-02-15 03:03:36,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:03:36,464 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10456 transitions. [2022-02-15 03:03:36,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-15 03:03:36,466 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:03:36,466 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] [2022-02-15 03:03:36,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 03:03:36,467 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:03:36,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:03:36,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1708625388, now seen corresponding path program 1 times [2022-02-15 03:03:36,467 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:03:36,467 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454534677] [2022-02-15 03:03:36,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:03:36,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:03:36,478 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:03:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:36,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:03:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:36,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:03:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:37,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-15 03:03:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:37,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:03:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:37,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:37,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:03:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:37,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 03:03:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:37,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:37,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:03:37,313 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:03:37,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454534677] [2022-02-15 03:03:37,314 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1454534677] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:03:37,314 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:03:37,314 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 03:03:37,314 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972134057] [2022-02-15 03:03:37,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:03:37,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 03:03:37,314 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:03:37,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 03:03:37,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-02-15 03:03:37,315 INFO L87 Difference]: Start difference. First operand 6937 states and 10456 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:03:45,624 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 [] [2022-02-15 03:03:49,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:03:49,597 INFO L93 Difference]: Finished difference Result 14697 states and 22709 transitions. [2022-02-15 03:03:49,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 03:03:49,610 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2022-02-15 03:03:49,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:03:49,664 INFO L225 Difference]: With dead ends: 14697 [2022-02-15 03:03:49,664 INFO L226 Difference]: Without dead ends: 7729 [2022-02-15 03:03:49,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2022-02-15 03:03:49,758 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1887 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 3877 mSolverCounterSat, 744 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1917 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 4622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 744 IncrementalHoareTripleChecker+Valid, 3877 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-02-15 03:03:49,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1917 Valid, 1662 Invalid, 4622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [744 Valid, 3877 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-02-15 03:03:49,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7729 states. [2022-02-15 03:03:51,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7729 to 6958. [2022-02-15 03:03:51,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6958 states, 5554 states have (on average 1.4499459848757652) internal successors, (8053), 5704 states have internal predecessors, (8053), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:03:51,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6958 states to 6958 states and 10477 transitions. [2022-02-15 03:03:51,348 INFO L78 Accepts]: Start accepts. Automaton has 6958 states and 10477 transitions. Word has length 62 [2022-02-15 03:03:51,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:03:51,349 INFO L470 AbstractCegarLoop]: Abstraction has 6958 states and 10477 transitions. [2022-02-15 03:03:51,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:03:51,349 INFO L276 IsEmpty]: Start isEmpty. Operand 6958 states and 10477 transitions. [2022-02-15 03:03:51,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-15 03:03:51,350 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:03:51,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:03:51,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 03:03:51,351 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:03:51,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:03:51,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1497759729, now seen corresponding path program 1 times [2022-02-15 03:03:51,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:03:51,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556611175] [2022-02-15 03:03:51,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:03:51,402 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:03:51,402 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:03:51,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:03:51,426 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:03:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:51,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:03:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:51,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:03:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:52,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-02-15 03:03:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:52,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-15 03:03:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:52,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:52,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-15 03:03:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:52,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 03:03:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:52,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:03:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:03:52,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:03:52,289 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:03:52,289 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556611175] [2022-02-15 03:03:52,290 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1556611175] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:03:52,290 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:03:52,290 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-15 03:03:52,290 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110271422] [2022-02-15 03:03:52,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:03:52,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-15 03:03:52,290 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:03:52,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-15 03:03:52,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-15 03:03:52,291 INFO L87 Difference]: Start difference. First operand 6958 states and 10477 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:04:02,742 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:04:07,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:04:07,320 INFO L93 Difference]: Finished difference Result 14738 states and 22750 transitions. [2022-02-15 03:04:07,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 03:04:07,320 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2022-02-15 03:04:07,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:04:07,355 INFO L225 Difference]: With dead ends: 14738 [2022-02-15 03:04:07,356 INFO L226 Difference]: Without dead ends: 7750 [2022-02-15 03:04:07,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2022-02-15 03:04:07,385 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2776 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 4128 mSolverCounterSat, 1216 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2806 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 5345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1216 IncrementalHoareTripleChecker+Valid, 4128 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-02-15 03:04:07,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2806 Valid, 1720 Invalid, 5345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1216 Valid, 4128 Invalid, 1 Unknown, 0 Unchecked, 11.9s Time] [2022-02-15 03:04:07,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7750 states. [2022-02-15 03:04:08,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7750 to 6979. [2022-02-15 03:04:08,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6979 states, 5575 states have (on average 1.4482511210762332) internal successors, (8074), 5725 states have internal predecessors, (8074), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:04:08,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 10498 transitions. [2022-02-15 03:04:08,883 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 10498 transitions. Word has length 64 [2022-02-15 03:04:08,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:04:08,884 INFO L470 AbstractCegarLoop]: Abstraction has 6979 states and 10498 transitions. [2022-02-15 03:04:08,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:04:08,884 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 10498 transitions. [2022-02-15 03:04:08,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-02-15 03:04:08,885 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:04:08,885 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] [2022-02-15 03:04:08,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 03:04:08,885 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:04:08,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:04:08,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1815946881, now seen corresponding path program 2 times [2022-02-15 03:04:08,886 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:04:08,886 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928579169] [2022-02-15 03:04:08,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:04:08,887 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:04:08,887 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:04:08,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:04:08,897 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:04:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:09,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:04:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:09,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:04:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:09,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-02-15 03:04:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:09,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 03:04:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:09,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:09,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-15 03:04:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:09,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-15 03:04:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:09,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:09,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:04:09,594 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:04:09,594 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928579169] [2022-02-15 03:04:09,594 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1928579169] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:04:09,594 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:04:09,594 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-15 03:04:09,594 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097027757] [2022-02-15 03:04:09,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:04:09,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 03:04:09,595 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:04:09,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 03:04:09,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-02-15 03:04:09,596 INFO L87 Difference]: Start difference. First operand 6979 states and 10498 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:04:18,640 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:04:23,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:04:23,432 INFO L93 Difference]: Finished difference Result 14779 states and 22791 transitions. [2022-02-15 03:04:23,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-15 03:04:23,432 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2022-02-15 03:04:23,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:04:23,461 INFO L225 Difference]: With dead ends: 14779 [2022-02-15 03:04:23,462 INFO L226 Difference]: Without dead ends: 7771 [2022-02-15 03:04:23,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2022-02-15 03:04:23,492 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2610 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 4033 mSolverCounterSat, 1151 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2640 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 5185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1151 IncrementalHoareTripleChecker+Valid, 4033 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-02-15 03:04:23,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2640 Valid, 1710 Invalid, 5185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1151 Valid, 4033 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2022-02-15 03:04:23,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7771 states. [2022-02-15 03:04:25,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7771 to 7000. [2022-02-15 03:04:25,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7000 states, 5596 states have (on average 1.4465689778413153) internal successors, (8095), 5746 states have internal predecessors, (8095), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:04:25,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7000 states to 7000 states and 10519 transitions. [2022-02-15 03:04:25,495 INFO L78 Accepts]: Start accepts. Automaton has 7000 states and 10519 transitions. Word has length 65 [2022-02-15 03:04:25,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:04:25,495 INFO L470 AbstractCegarLoop]: Abstraction has 7000 states and 10519 transitions. [2022-02-15 03:04:25,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:04:25,496 INFO L276 IsEmpty]: Start isEmpty. Operand 7000 states and 10519 transitions. [2022-02-15 03:04:25,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-02-15 03:04:25,497 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:04:25,497 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] [2022-02-15 03:04:25,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 03:04:25,498 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:04:25,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:04:25,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1205153295, now seen corresponding path program 3 times [2022-02-15 03:04:25,498 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:04:25,498 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644192974] [2022-02-15 03:04:25,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:04:25,524 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:04:25,524 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:04:25,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:04:25,554 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:04:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:26,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:04:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:26,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:04:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:26,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-02-15 03:04:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:26,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-15 03:04:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:26,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:26,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 03:04:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:26,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-15 03:04:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:26,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:04:26,461 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:04:26,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644192974] [2022-02-15 03:04:26,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [644192974] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:04:26,462 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:04:26,462 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 03:04:26,462 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745292974] [2022-02-15 03:04:26,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:04:26,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 03:04:26,462 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:04:26,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 03:04:26,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-02-15 03:04:26,463 INFO L87 Difference]: Start difference. First operand 7000 states and 10519 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:04:33,923 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:04:39,440 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:04:45,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:04:45,405 INFO L93 Difference]: Finished difference Result 14820 states and 22832 transitions. [2022-02-15 03:04:45,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 03:04:45,406 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 7 states have internal predecessors, (48), 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 66 [2022-02-15 03:04:45,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:04:45,481 INFO L225 Difference]: With dead ends: 14820 [2022-02-15 03:04:45,481 INFO L226 Difference]: Without dead ends: 7792 [2022-02-15 03:04:45,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=163, Invalid=539, Unknown=0, NotChecked=0, Total=702 [2022-02-15 03:04:45,514 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2139 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 5061 mSolverCounterSat, 957 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2169 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 6020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 957 IncrementalHoareTripleChecker+Valid, 5061 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-02-15 03:04:45,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2169 Valid, 1917 Invalid, 6020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [957 Valid, 5061 Invalid, 2 Unknown, 0 Unchecked, 15.4s Time] [2022-02-15 03:04:45,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2022-02-15 03:04:47,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7021. [2022-02-15 03:04:47,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7021 states, 5617 states have (on average 1.4448994124977745) internal successors, (8116), 5767 states have internal predecessors, (8116), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:04:47,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7021 states to 7021 states and 10540 transitions. [2022-02-15 03:04:47,057 INFO L78 Accepts]: Start accepts. Automaton has 7021 states and 10540 transitions. Word has length 66 [2022-02-15 03:04:47,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:04:47,057 INFO L470 AbstractCegarLoop]: Abstraction has 7021 states and 10540 transitions. [2022-02-15 03:04:47,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:04:47,058 INFO L276 IsEmpty]: Start isEmpty. Operand 7021 states and 10540 transitions. [2022-02-15 03:04:47,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-15 03:04:47,059 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:04:47,059 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:04:47,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 03:04:47,059 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:04:47,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:04:47,060 INFO L85 PathProgramCache]: Analyzing trace with hash -369978239, now seen corresponding path program 4 times [2022-02-15 03:04:47,060 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:04:47,060 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243806482] [2022-02-15 03:04:47,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:04:47,061 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:04:47,061 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:04:47,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:04:47,071 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:04:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:47,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:04:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:47,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:04:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:47,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-15 03:04:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:47,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-15 03:04:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:47,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:47,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-02-15 03:04:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:47,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-15 03:04:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:47,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:04:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:04:47,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:04:47,952 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:04:47,952 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243806482] [2022-02-15 03:04:47,952 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [243806482] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:04:47,952 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:04:47,952 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 03:04:47,952 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618743480] [2022-02-15 03:04:47,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:04:47,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 03:04:47,952 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:04:47,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 03:04:47,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-02-15 03:04:47,953 INFO L87 Difference]: Start difference. First operand 7021 states and 10540 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:04:59,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:05:04,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:05:04,533 INFO L93 Difference]: Finished difference Result 14861 states and 22873 transitions. [2022-02-15 03:05:04,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 03:05:04,534 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2022-02-15 03:05:04,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:05:04,567 INFO L225 Difference]: With dead ends: 14861 [2022-02-15 03:05:04,568 INFO L226 Difference]: Without dead ends: 7813 [2022-02-15 03:05:04,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2022-02-15 03:05:04,597 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2139 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 5075 mSolverCounterSat, 959 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2169 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 6035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 959 IncrementalHoareTripleChecker+Valid, 5075 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-02-15 03:05:04,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2169 Valid, 1917 Invalid, 6035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [959 Valid, 5075 Invalid, 1 Unknown, 0 Unchecked, 12.9s Time] [2022-02-15 03:05:04,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7813 states. [2022-02-15 03:05:06,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7813 to 7042. [2022-02-15 03:05:06,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7042 states, 5638 states have (on average 1.443242284498049) internal successors, (8137), 5788 states have internal predecessors, (8137), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:05:06,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7042 states to 7042 states and 10561 transitions. [2022-02-15 03:05:06,358 INFO L78 Accepts]: Start accepts. Automaton has 7042 states and 10561 transitions. Word has length 67 [2022-02-15 03:05:06,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:05:06,359 INFO L470 AbstractCegarLoop]: Abstraction has 7042 states and 10561 transitions. [2022-02-15 03:05:06,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:05:06,359 INFO L276 IsEmpty]: Start isEmpty. Operand 7042 states and 10561 transitions. [2022-02-15 03:05:06,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-15 03:05:06,361 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:05:06,361 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] [2022-02-15 03:05:06,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 03:05:06,362 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:05:06,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:05:06,362 INFO L85 PathProgramCache]: Analyzing trace with hash 209024124, now seen corresponding path program 1 times [2022-02-15 03:05:06,362 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:05:06,362 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170457334] [2022-02-15 03:05:06,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:05:06,364 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:05:06,364 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:05:06,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:05:06,374 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:05:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:06,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:05:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:06,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:05:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:07,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-15 03:05:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:07,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-15 03:05:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:07,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:07,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-02-15 03:05:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:07,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-15 03:05:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:07,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:07,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:05:07,395 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:05:07,395 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170457334] [2022-02-15 03:05:07,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [170457334] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:05:07,395 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:05:07,395 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 03:05:07,395 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54830128] [2022-02-15 03:05:07,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:05:07,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 03:05:07,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:05:07,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 03:05:07,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-02-15 03:05:07,396 INFO L87 Difference]: Start difference. First operand 7042 states and 10561 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:05:18,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:05:25,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:05:25,252 INFO L93 Difference]: Finished difference Result 14902 states and 22914 transitions. [2022-02-15 03:05:25,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 03:05:25,253 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2022-02-15 03:05:25,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:05:25,303 INFO L225 Difference]: With dead ends: 14902 [2022-02-15 03:05:25,304 INFO L226 Difference]: Without dead ends: 7834 [2022-02-15 03:05:25,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=191, Invalid=739, Unknown=0, NotChecked=0, Total=930 [2022-02-15 03:05:25,355 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1754 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 5853 mSolverCounterSat, 808 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1784 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 6662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 808 IncrementalHoareTripleChecker+Valid, 5853 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-02-15 03:05:25,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1784 Valid, 2110 Invalid, 6662 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [808 Valid, 5853 Invalid, 1 Unknown, 0 Unchecked, 14.2s Time] [2022-02-15 03:05:25,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7834 states. [2022-02-15 03:05:26,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7834 to 7063. [2022-02-15 03:05:27,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7063 states, 5659 states have (on average 1.4415974553808093) internal successors, (8158), 5809 states have internal predecessors, (8158), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:05:27,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 10582 transitions. [2022-02-15 03:05:27,120 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 10582 transitions. Word has length 67 [2022-02-15 03:05:27,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:05:27,120 INFO L470 AbstractCegarLoop]: Abstraction has 7063 states and 10582 transitions. [2022-02-15 03:05:27,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:05:27,121 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 10582 transitions. [2022-02-15 03:05:27,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-15 03:05:27,122 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:05:27,122 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] [2022-02-15 03:05:27,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 03:05:27,122 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:05:27,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:05:27,123 INFO L85 PathProgramCache]: Analyzing trace with hash -805010815, now seen corresponding path program 5 times [2022-02-15 03:05:27,123 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:05:27,123 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579988838] [2022-02-15 03:05:27,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:05:27,124 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:05:27,124 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:05:27,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:05:27,136 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:05:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:27,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:05:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:27,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:05:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:27,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-15 03:05:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:27,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-15 03:05:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:28,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:28,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-02-15 03:05:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:28,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-15 03:05:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:28,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:28,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:05:28,157 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:05:28,157 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579988838] [2022-02-15 03:05:28,157 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [579988838] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:05:28,157 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:05:28,157 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-02-15 03:05:28,157 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110596196] [2022-02-15 03:05:28,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:05:28,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 03:05:28,158 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:05:28,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 03:05:28,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-02-15 03:05:28,158 INFO L87 Difference]: Start difference. First operand 7063 states and 10582 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:05:40,014 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:05:45,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:05:45,888 INFO L93 Difference]: Finished difference Result 14943 states and 22955 transitions. [2022-02-15 03:05:45,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 03:05:45,889 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2022-02-15 03:05:45,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:05:45,927 INFO L225 Difference]: With dead ends: 14943 [2022-02-15 03:05:45,928 INFO L226 Difference]: Without dead ends: 7855 [2022-02-15 03:05:45,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2022-02-15 03:05:45,962 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2206 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 5064 mSolverCounterSat, 986 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2236 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 6051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 986 IncrementalHoareTripleChecker+Valid, 5064 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-02-15 03:05:45,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2236 Valid, 1894 Invalid, 6051 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [986 Valid, 5064 Invalid, 1 Unknown, 0 Unchecked, 13.9s Time] [2022-02-15 03:05:45,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7855 states. [2022-02-15 03:05:47,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7855 to 7084. [2022-02-15 03:05:47,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7084 states, 5680 states have (on average 1.4399647887323943) internal successors, (8179), 5830 states have internal predecessors, (8179), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:05:47,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7084 states to 7084 states and 10603 transitions. [2022-02-15 03:05:47,622 INFO L78 Accepts]: Start accepts. Automaton has 7084 states and 10603 transitions. Word has length 69 [2022-02-15 03:05:47,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:05:47,623 INFO L470 AbstractCegarLoop]: Abstraction has 7084 states and 10603 transitions. [2022-02-15 03:05:47,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:05:47,623 INFO L276 IsEmpty]: Start isEmpty. Operand 7084 states and 10603 transitions. [2022-02-15 03:05:47,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 03:05:47,637 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:05:47,637 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] [2022-02-15 03:05:47,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 03:05:47,638 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:05:47,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:05:47,638 INFO L85 PathProgramCache]: Analyzing trace with hash -850463247, now seen corresponding path program 6 times [2022-02-15 03:05:47,638 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:05:47,638 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739583270] [2022-02-15 03:05:47,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:05:47,639 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:05:47,640 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:05:47,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:05:47,667 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:05:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:47,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:05:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:48,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:05:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:48,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-02-15 03:05:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:48,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:05:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:48,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:48,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-02-15 03:05:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:48,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 03:05:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:48,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:05:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:05:48,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:05:48,897 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:05:48,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739583270] [2022-02-15 03:05:48,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [739583270] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:05:48,897 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:05:48,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-02-15 03:05:48,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971999395] [2022-02-15 03:05:48,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:05:48,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 03:05:48,898 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:05:48,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 03:05:48,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2022-02-15 03:05:48,899 INFO L87 Difference]: Start difference. First operand 7084 states and 10603 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:05:57,452 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:05:59,668 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:06:01,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:06:04,046 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:06:10,444 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 [] [2022-02-15 03:06:16,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:06:16,034 INFO L93 Difference]: Finished difference Result 14984 states and 22996 transitions. [2022-02-15 03:06:16,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-15 03:06:16,035 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2022-02-15 03:06:16,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:06:16,133 INFO L225 Difference]: With dead ends: 14984 [2022-02-15 03:06:16,133 INFO L226 Difference]: Without dead ends: 7876 [2022-02-15 03:06:16,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 03:06:16,214 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1999 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 6095 mSolverCounterSat, 910 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2029 SdHoareTripleChecker+Valid, 2271 SdHoareTripleChecker+Invalid, 7010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 910 IncrementalHoareTripleChecker+Valid, 6095 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2022-02-15 03:06:16,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2029 Valid, 2271 Invalid, 7010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [910 Valid, 6095 Invalid, 5 Unknown, 0 Unchecked, 23.3s Time] [2022-02-15 03:06:16,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7876 states. [2022-02-15 03:06:17,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7876 to 7105. [2022-02-15 03:06:17,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7105 states, 5701 states have (on average 1.4383441501490966) internal successors, (8200), 5851 states have internal predecessors, (8200), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:06:17,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 10624 transitions. [2022-02-15 03:06:17,981 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 10624 transitions. Word has length 70 [2022-02-15 03:06:17,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:06:17,981 INFO L470 AbstractCegarLoop]: Abstraction has 7105 states and 10624 transitions. [2022-02-15 03:06:17,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:06:17,981 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 10624 transitions. [2022-02-15 03:06:17,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-15 03:06:17,982 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:06:17,983 INFO L514 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:06:17,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 03:06:17,983 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:06:17,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:06:17,983 INFO L85 PathProgramCache]: Analyzing trace with hash -271460884, now seen corresponding path program 2 times [2022-02-15 03:06:17,983 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:06:17,983 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625547346] [2022-02-15 03:06:17,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:06:17,984 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:06:17,985 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:06:17,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:06:17,995 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:06:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:18,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:06:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:18,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:06:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:19,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-15 03:06:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:19,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-02-15 03:06:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:19,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:06:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:19,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-15 03:06:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:19,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 03:06:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:19,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:06:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:19,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:06:19,583 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:06:19,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625547346] [2022-02-15 03:06:19,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [625547346] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:06:19,583 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:06:19,584 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-02-15 03:06:19,584 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144896381] [2022-02-15 03:06:19,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:06:19,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-15 03:06:19,584 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:06:19,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-15 03:06:19,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2022-02-15 03:06:19,585 INFO L87 Difference]: Start difference. First operand 7105 states and 10624 transitions. Second operand has 20 states, 20 states have (on average 2.6) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:06:37,984 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:06:47,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:06:47,012 INFO L93 Difference]: Finished difference Result 15025 states and 23037 transitions. [2022-02-15 03:06:47,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-15 03:06:47,013 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2022-02-15 03:06:47,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:06:47,059 INFO L225 Difference]: With dead ends: 15025 [2022-02-15 03:06:47,060 INFO L226 Difference]: Without dead ends: 7897 [2022-02-15 03:06:47,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=233, Invalid=1099, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 03:06:47,098 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1452 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 8551 mSolverCounterSat, 632 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 9184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 632 IncrementalHoareTripleChecker+Valid, 8551 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2022-02-15 03:06:47,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1482 Valid, 2678 Invalid, 9184 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [632 Valid, 8551 Invalid, 1 Unknown, 0 Unchecked, 22.5s Time] [2022-02-15 03:06:47,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7897 states. [2022-02-15 03:06:48,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7897 to 7126. [2022-02-15 03:06:48,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7126 states, 5722 states have (on average 1.4367354072002796) internal successors, (8221), 5872 states have internal predecessors, (8221), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:06:48,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7126 states to 7126 states and 10645 transitions. [2022-02-15 03:06:48,943 INFO L78 Accepts]: Start accepts. Automaton has 7126 states and 10645 transitions. Word has length 70 [2022-02-15 03:06:48,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:06:48,944 INFO L470 AbstractCegarLoop]: Abstraction has 7126 states and 10645 transitions. [2022-02-15 03:06:48,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:06:48,944 INFO L276 IsEmpty]: Start isEmpty. Operand 7126 states and 10645 transitions. [2022-02-15 03:06:48,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 03:06:48,946 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:06:48,946 INFO L514 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:06:48,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 03:06:48,947 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:06:48,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:06:48,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1680486276, now seen corresponding path program 3 times [2022-02-15 03:06:48,947 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:06:48,947 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328317811] [2022-02-15 03:06:48,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:06:48,950 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:06:48,950 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:06:48,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:06:48,972 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:06:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:49,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:06:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:49,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:06:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:50,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-02-15 03:06:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:50,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-02-15 03:06:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:50,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:06:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:50,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-15 03:06:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:50,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-02-15 03:06:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:50,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:06:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:06:50,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:06:50,502 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:06:50,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328317811] [2022-02-15 03:06:50,502 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [328317811] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:06:50,502 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:06:50,503 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-02-15 03:06:50,503 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805254361] [2022-02-15 03:06:50,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:06:50,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 03:06:50,503 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:06:50,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 03:06:50,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2022-02-15 03:06:50,504 INFO L87 Difference]: Start difference. First operand 7126 states and 10645 transitions. Second operand has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:07:04,575 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:07:12,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:07:12,069 INFO L93 Difference]: Finished difference Result 15066 states and 23078 transitions. [2022-02-15 03:07:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-15 03:07:12,070 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-02-15 03:07:12,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:07:12,102 INFO L225 Difference]: With dead ends: 15066 [2022-02-15 03:07:12,102 INFO L226 Difference]: Without dead ends: 7918 [2022-02-15 03:07:12,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=247, Invalid=1235, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 03:07:12,130 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1638 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 8253 mSolverCounterSat, 692 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1668 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 8946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 692 IncrementalHoareTripleChecker+Valid, 8253 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2022-02-15 03:07:12,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1668 Valid, 2605 Invalid, 8946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [692 Valid, 8253 Invalid, 1 Unknown, 0 Unchecked, 17.1s Time] [2022-02-15 03:07:12,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7918 states. [2022-02-15 03:07:13,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7918 to 7147. [2022-02-15 03:07:13,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7147 states, 5743 states have (on average 1.4351384293923037) internal successors, (8242), 5893 states have internal predecessors, (8242), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:07:13,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 10666 transitions. [2022-02-15 03:07:13,869 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 10666 transitions. Word has length 71 [2022-02-15 03:07:13,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:07:13,869 INFO L470 AbstractCegarLoop]: Abstraction has 7147 states and 10666 transitions. [2022-02-15 03:07:13,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:07:13,869 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 10666 transitions. [2022-02-15 03:07:13,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-15 03:07:13,870 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:07:13,870 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:07:13,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 03:07:13,870 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:07:13,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:07:13,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1884366828, now seen corresponding path program 4 times [2022-02-15 03:07:13,871 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:07:13,871 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609742769] [2022-02-15 03:07:13,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:07:13,872 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:07:13,872 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:07:13,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:07:13,887 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:07:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:14,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:07:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:14,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:07:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:15,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-15 03:07:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:15,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-15 03:07:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:15,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:07:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:15,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-02-15 03:07:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:15,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-15 03:07:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:15,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:07:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:15,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:07:15,486 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:07:15,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609742769] [2022-02-15 03:07:15,486 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1609742769] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:07:15,486 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:07:15,486 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-02-15 03:07:15,486 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083237731] [2022-02-15 03:07:15,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:07:15,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 03:07:15,487 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:07:15,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 03:07:15,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2022-02-15 03:07:15,487 INFO L87 Difference]: Start difference. First operand 7147 states and 10666 transitions. Second operand has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:07:30,804 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:07:38,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:07:38,351 INFO L93 Difference]: Finished difference Result 15107 states and 23119 transitions. [2022-02-15 03:07:38,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 03:07:38,352 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2022-02-15 03:07:38,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:07:38,386 INFO L225 Difference]: With dead ends: 15107 [2022-02-15 03:07:38,387 INFO L226 Difference]: Without dead ends: 7939 [2022-02-15 03:07:38,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=261, Invalid=1379, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 03:07:38,417 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2614 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 8003 mSolverCounterSat, 1184 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2644 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 9188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1184 IncrementalHoareTripleChecker+Valid, 8003 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:07:38,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2644 Valid, 2727 Invalid, 9188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1184 Valid, 8003 Invalid, 1 Unknown, 0 Unchecked, 18.6s Time] [2022-02-15 03:07:38,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7939 states. [2022-02-15 03:07:40,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7939 to 7168. [2022-02-15 03:07:40,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7168 states, 5764 states have (on average 1.4335530881332408) internal successors, (8263), 5914 states have internal predecessors, (8263), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:07:40,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7168 states to 7168 states and 10687 transitions. [2022-02-15 03:07:40,236 INFO L78 Accepts]: Start accepts. Automaton has 7168 states and 10687 transitions. Word has length 72 [2022-02-15 03:07:40,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:07:40,236 INFO L470 AbstractCegarLoop]: Abstraction has 7168 states and 10687 transitions. [2022-02-15 03:07:40,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:07:40,237 INFO L276 IsEmpty]: Start isEmpty. Operand 7168 states and 10687 transitions. [2022-02-15 03:07:40,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-15 03:07:40,238 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:07:40,238 INFO L514 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:07:40,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 03:07:40,238 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:07:40,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:07:40,238 INFO L85 PathProgramCache]: Analyzing trace with hash 725663356, now seen corresponding path program 5 times [2022-02-15 03:07:40,238 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:07:40,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250896448] [2022-02-15 03:07:40,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:07:40,240 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:07:40,240 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:07:40,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:07:40,363 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:07:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:40,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:07:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:40,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:07:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:41,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-02-15 03:07:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:41,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-15 03:07:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:41,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:07:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:41,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-15 03:07:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:41,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-02-15 03:07:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:41,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:07:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:07:41,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:07:41,976 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:07:41,976 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250896448] [2022-02-15 03:07:41,976 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [250896448] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:07:41,976 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:07:41,976 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-02-15 03:07:41,976 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158717802] [2022-02-15 03:07:41,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:07:41,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 03:07:41,977 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:07:41,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 03:07:41,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2022-02-15 03:07:41,977 INFO L87 Difference]: Start difference. First operand 7168 states and 10687 transitions. Second operand has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 15 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:07:53,479 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:07:55,606 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:07:57,768 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:05,181 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:13,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:08:13,861 INFO L93 Difference]: Finished difference Result 15148 states and 23160 transitions. [2022-02-15 03:08:13,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-15 03:08:13,864 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 15 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2022-02-15 03:08:13,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:08:13,897 INFO L225 Difference]: With dead ends: 15148 [2022-02-15 03:08:13,897 INFO L226 Difference]: Without dead ends: 7960 [2022-02-15 03:08:14,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=275, Invalid=1531, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 03:08:14,022 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2605 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 9446 mSolverCounterSat, 1189 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2635 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 10639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1189 IncrementalHoareTripleChecker+Valid, 9446 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.5s IncrementalHoareTripleChecker+Time [2022-02-15 03:08:14,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2635 Valid, 2998 Invalid, 10639 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1189 Valid, 9446 Invalid, 4 Unknown, 0 Unchecked, 27.5s Time] [2022-02-15 03:08:14,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7960 states. [2022-02-15 03:08:15,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7960 to 7189. [2022-02-15 03:08:15,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7189 states, 5785 states have (on average 1.4319792566983578) internal successors, (8284), 5935 states have internal predecessors, (8284), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:08:15,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7189 states to 7189 states and 10708 transitions. [2022-02-15 03:08:15,948 INFO L78 Accepts]: Start accepts. Automaton has 7189 states and 10708 transitions. Word has length 73 [2022-02-15 03:08:15,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:08:15,948 INFO L470 AbstractCegarLoop]: Abstraction has 7189 states and 10708 transitions. [2022-02-15 03:08:15,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 15 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:08:15,948 INFO L276 IsEmpty]: Start isEmpty. Operand 7189 states and 10708 transitions. [2022-02-15 03:08:15,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-15 03:08:15,949 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:08:15,949 INFO L514 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:08:15,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-15 03:08:15,949 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:08:15,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:08:15,950 INFO L85 PathProgramCache]: Analyzing trace with hash -834405908, now seen corresponding path program 6 times [2022-02-15 03:08:15,950 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:08:15,950 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440940444] [2022-02-15 03:08:15,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:08:15,951 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:08:15,951 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:08:15,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:08:15,962 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:08:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:16,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:08:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:16,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:08:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:17,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-02-15 03:08:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:17,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-02-15 03:08:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:17,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:08:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:17,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-02-15 03:08:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:17,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-02-15 03:08:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:17,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:08:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:17,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:08:17,936 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:08:17,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440940444] [2022-02-15 03:08:17,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1440940444] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:08:17,936 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:08:17,936 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-02-15 03:08:17,936 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533785225] [2022-02-15 03:08:17,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:08:17,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 03:08:17,936 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:08:17,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 03:08:17,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2022-02-15 03:08:17,937 INFO L87 Difference]: Start difference. First operand 7189 states and 10708 transitions. Second operand has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 16 states have internal predecessors, (56), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:08:30,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:32,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:34,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:43,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:08:52,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:08:52,342 INFO L93 Difference]: Finished difference Result 15189 states and 23201 transitions. [2022-02-15 03:08:52,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 03:08:52,343 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 16 states have internal predecessors, (56), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2022-02-15 03:08:52,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:08:52,377 INFO L225 Difference]: With dead ends: 15189 [2022-02-15 03:08:52,377 INFO L226 Difference]: Without dead ends: 7981 [2022-02-15 03:08:52,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=289, Invalid=1691, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 03:08:52,403 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1980 mSDsluCounter, 2307 mSDsCounter, 0 mSdLazyCounter, 9315 mSolverCounterSat, 916 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2010 SdHoareTripleChecker+Valid, 3007 SdHoareTripleChecker+Invalid, 10235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 916 IncrementalHoareTripleChecker+Valid, 9315 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.7s IncrementalHoareTripleChecker+Time [2022-02-15 03:08:52,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2010 Valid, 3007 Invalid, 10235 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [916 Valid, 9315 Invalid, 4 Unknown, 0 Unchecked, 29.7s Time] [2022-02-15 03:08:52,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7981 states. [2022-02-15 03:08:54,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7981 to 7210. [2022-02-15 03:08:54,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7210 states, 5806 states have (on average 1.4304168101963486) internal successors, (8305), 5956 states have internal predecessors, (8305), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:08:54,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7210 states to 7210 states and 10729 transitions. [2022-02-15 03:08:54,274 INFO L78 Accepts]: Start accepts. Automaton has 7210 states and 10729 transitions. Word has length 74 [2022-02-15 03:08:54,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:08:54,274 INFO L470 AbstractCegarLoop]: Abstraction has 7210 states and 10729 transitions. [2022-02-15 03:08:54,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 16 states have internal predecessors, (56), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:08:54,274 INFO L276 IsEmpty]: Start isEmpty. Operand 7210 states and 10729 transitions. [2022-02-15 03:08:54,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-15 03:08:54,275 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:08:54,275 INFO L514 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:08:54,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-15 03:08:54,276 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:08:54,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:08:54,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1951912836, now seen corresponding path program 7 times [2022-02-15 03:08:54,276 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:08:54,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122633093] [2022-02-15 03:08:54,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:08:54,277 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:08:54,277 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:08:54,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:08:54,289 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:08:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:54,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:08:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:54,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:08:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:55,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-02-15 03:08:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:55,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:08:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:56,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:08:56,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:56,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-15 03:08:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:56,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-02-15 03:08:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:56,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:08:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:08:56,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:08:56,341 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:08:56,341 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122633093] [2022-02-15 03:08:56,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2122633093] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:08:56,341 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:08:56,341 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-02-15 03:08:56,341 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758188156] [2022-02-15 03:08:56,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:08:56,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-15 03:08:56,342 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:08:56,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-15 03:08:56,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-02-15 03:08:56,342 INFO L87 Difference]: Start difference. First operand 7210 states and 10729 transitions. Second operand has 25 states, 25 states have (on average 2.28) internal successors, (57), 17 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:09:08,142 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:09:15,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:09:15,106 INFO L93 Difference]: Finished difference Result 15230 states and 23242 transitions. [2022-02-15 03:09:15,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 03:09:15,108 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 17 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-02-15 03:09:15,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:09:15,146 INFO L225 Difference]: With dead ends: 15230 [2022-02-15 03:09:15,146 INFO L226 Difference]: Without dead ends: 8002 [2022-02-15 03:09:15,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=303, Invalid=1859, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 03:09:15,180 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1595 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 5045 mSolverCounterSat, 714 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1625 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 5760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 714 IncrementalHoareTripleChecker+Valid, 5045 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-02-15 03:09:15,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1625 Valid, 1733 Invalid, 5760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [714 Valid, 5045 Invalid, 1 Unknown, 0 Unchecked, 13.6s Time] [2022-02-15 03:09:15,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8002 states. [2022-02-15 03:09:17,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8002 to 7231. [2022-02-15 03:09:17,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7231 states, 5827 states have (on average 1.4288656255362966) internal successors, (8326), 5977 states have internal predecessors, (8326), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:09:17,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7231 states to 7231 states and 10750 transitions. [2022-02-15 03:09:17,068 INFO L78 Accepts]: Start accepts. Automaton has 7231 states and 10750 transitions. Word has length 75 [2022-02-15 03:09:17,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:09:17,069 INFO L470 AbstractCegarLoop]: Abstraction has 7231 states and 10750 transitions. [2022-02-15 03:09:17,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 17 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:09:17,069 INFO L276 IsEmpty]: Start isEmpty. Operand 7231 states and 10750 transitions. [2022-02-15 03:09:17,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-15 03:09:17,070 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:09:17,070 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:09:17,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-15 03:09:17,070 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:09:17,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:09:17,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2060078060, now seen corresponding path program 8 times [2022-02-15 03:09:17,071 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:09:17,071 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792671610] [2022-02-15 03:09:17,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:09:17,072 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:09:17,072 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:09:17,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:09:17,083 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:09:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:17,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:09:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:17,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:09:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:19,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-15 03:09:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:19,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-02-15 03:09:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:19,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:09:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:19,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-02-15 03:09:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:19,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-02-15 03:09:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:19,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:09:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:09:19,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:09:19,583 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:09:19,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792671610] [2022-02-15 03:09:19,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [792671610] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:09:19,584 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:09:19,584 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-02-15 03:09:19,584 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252457256] [2022-02-15 03:09:19,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:09:19,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-15 03:09:19,584 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:09:19,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-15 03:09:19,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2022-02-15 03:09:19,585 INFO L87 Difference]: Start difference. First operand 7231 states and 10750 transitions. Second operand has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 18 states have internal predecessors, (58), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:09:38,339 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:09:40,518 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:09:42,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:09:53,963 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:10:05,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:10:05,397 INFO L93 Difference]: Finished difference Result 15271 states and 23283 transitions. [2022-02-15 03:10:05,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 03:10:05,399 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 18 states have internal predecessors, (58), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2022-02-15 03:10:05,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:10:05,437 INFO L225 Difference]: With dead ends: 15271 [2022-02-15 03:10:05,437 INFO L226 Difference]: Without dead ends: 8023 [2022-02-15 03:10:05,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=317, Invalid=2035, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 03:10:05,465 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2154 mSDsluCounter, 2986 mSDsCounter, 0 mSdLazyCounter, 12431 mSolverCounterSat, 926 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2184 SdHoareTripleChecker+Valid, 3686 SdHoareTripleChecker+Invalid, 13361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 926 IncrementalHoareTripleChecker+Valid, 12431 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.7s IncrementalHoareTripleChecker+Time [2022-02-15 03:10:05,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2184 Valid, 3686 Invalid, 13361 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [926 Valid, 12431 Invalid, 4 Unknown, 0 Unchecked, 39.7s Time] [2022-02-15 03:10:05,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8023 states. [2022-02-15 03:10:07,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8023 to 7252. [2022-02-15 03:10:07,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7252 states, 5848 states have (on average 1.427325581395349) internal successors, (8347), 5998 states have internal predecessors, (8347), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:10:07,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7252 states to 7252 states and 10771 transitions. [2022-02-15 03:10:07,672 INFO L78 Accepts]: Start accepts. Automaton has 7252 states and 10771 transitions. Word has length 76 [2022-02-15 03:10:07,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:10:07,673 INFO L470 AbstractCegarLoop]: Abstraction has 7252 states and 10771 transitions. [2022-02-15 03:10:07,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 18 states have internal predecessors, (58), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:10:07,673 INFO L276 IsEmpty]: Start isEmpty. Operand 7252 states and 10771 transitions. [2022-02-15 03:10:07,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-15 03:10:07,674 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:10:07,674 INFO L514 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:10:07,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-15 03:10:07,674 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:10:07,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:10:07,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1877744252, now seen corresponding path program 9 times [2022-02-15 03:10:07,674 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:10:07,675 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185395053] [2022-02-15 03:10:07,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:10:07,676 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:10:07,676 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:10:07,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:10:07,687 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:10:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:08,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:10:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:08,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:10:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:10,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-02-15 03:10:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:11,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 03:10:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:11,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:10:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:11,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-02-15 03:10:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:11,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-02-15 03:10:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:11,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:10:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:11,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:10:11,732 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:10:11,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185395053] [2022-02-15 03:10:11,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [185395053] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:10:11,732 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:10:11,732 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-02-15 03:10:11,732 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383842057] [2022-02-15 03:10:11,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:10:11,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-15 03:10:11,732 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:10:11,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-15 03:10:11,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-02-15 03:10:11,734 INFO L87 Difference]: Start difference. First operand 7252 states and 10771 transitions. Second operand has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 19 states have internal predecessors, (59), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:10:32,758 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 [] [2022-02-15 03:10:42,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:10:42,542 INFO L93 Difference]: Finished difference Result 15312 states and 23324 transitions. [2022-02-15 03:10:42,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 03:10:42,544 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 19 states have internal predecessors, (59), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2022-02-15 03:10:42,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:10:42,583 INFO L225 Difference]: With dead ends: 15312 [2022-02-15 03:10:42,584 INFO L226 Difference]: Without dead ends: 8044 [2022-02-15 03:10:42,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=331, Invalid=2219, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 03:10:42,617 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2054 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 8482 mSolverCounterSat, 949 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2084 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 9432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 949 IncrementalHoareTripleChecker+Valid, 8482 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2022-02-15 03:10:42,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2084 Valid, 2727 Invalid, 9432 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [949 Valid, 8482 Invalid, 1 Unknown, 0 Unchecked, 24.2s Time] [2022-02-15 03:10:42,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8044 states. [2022-02-15 03:10:44,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8044 to 7273. [2022-02-15 03:10:44,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7273 states, 5869 states have (on average 1.4257965581870846) internal successors, (8368), 6019 states have internal predecessors, (8368), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:10:44,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7273 states to 7273 states and 10792 transitions. [2022-02-15 03:10:44,887 INFO L78 Accepts]: Start accepts. Automaton has 7273 states and 10792 transitions. Word has length 77 [2022-02-15 03:10:44,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:10:44,887 INFO L470 AbstractCegarLoop]: Abstraction has 7273 states and 10792 transitions. [2022-02-15 03:10:44,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 19 states have internal predecessors, (59), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:10:44,887 INFO L276 IsEmpty]: Start isEmpty. Operand 7273 states and 10792 transitions. [2022-02-15 03:10:44,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-15 03:10:44,888 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:10:44,888 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:10:44,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-15 03:10:44,888 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:10:44,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:10:44,889 INFO L85 PathProgramCache]: Analyzing trace with hash 812230785, now seen corresponding path program 7 times [2022-02-15 03:10:44,889 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:10:44,889 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736300556] [2022-02-15 03:10:44,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:10:44,890 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:10:44,890 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:10:44,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:10:44,902 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:10:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:45,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:10:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:45,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:10:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:47,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-02-15 03:10:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:47,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-02-15 03:10:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:48,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:10:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:48,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-15 03:10:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:48,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-02-15 03:10:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:48,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:10:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:10:48,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:10:48,518 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:10:48,518 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736300556] [2022-02-15 03:10:48,518 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1736300556] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:10:48,518 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:10:48,518 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-02-15 03:10:48,518 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404593559] [2022-02-15 03:10:48,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:10:48,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-15 03:10:48,519 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:10:48,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-15 03:10:48,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2022-02-15 03:10:48,519 INFO L87 Difference]: Start difference. First operand 7273 states and 10792 transitions. Second operand has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 20 states have internal predecessors, (61), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:11:03,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:11:09,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:11:09,742 INFO L93 Difference]: Finished difference Result 15353 states and 23365 transitions. [2022-02-15 03:11:09,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 03:11:09,744 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 20 states have internal predecessors, (61), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 79 [2022-02-15 03:11:09,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:11:09,780 INFO L225 Difference]: With dead ends: 15353 [2022-02-15 03:11:09,781 INFO L226 Difference]: Without dead ends: 8065 [2022-02-15 03:11:09,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=345, Invalid=2411, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 03:11:09,810 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1901 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 4763 mSolverCounterSat, 855 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1931 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 5619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 855 IncrementalHoareTripleChecker+Valid, 4763 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-02-15 03:11:09,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1931 Valid, 1733 Invalid, 5619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [855 Valid, 4763 Invalid, 1 Unknown, 0 Unchecked, 14.2s Time] [2022-02-15 03:11:09,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8065 states. [2022-02-15 03:11:11,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8065 to 7294. [2022-02-15 03:11:11,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7294 states, 5890 states have (on average 1.4242784380305602) internal successors, (8389), 6040 states have internal predecessors, (8389), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:11:11,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7294 states to 7294 states and 10813 transitions. [2022-02-15 03:11:11,837 INFO L78 Accepts]: Start accepts. Automaton has 7294 states and 10813 transitions. Word has length 79 [2022-02-15 03:11:11,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:11:11,837 INFO L470 AbstractCegarLoop]: Abstraction has 7294 states and 10813 transitions. [2022-02-15 03:11:11,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 20 states have internal predecessors, (61), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:11:11,838 INFO L276 IsEmpty]: Start isEmpty. Operand 7294 states and 10813 transitions. [2022-02-15 03:11:11,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-15 03:11:11,838 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:11:11,839 INFO L514 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:11:11,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-15 03:11:11,840 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:11:11,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:11:11,840 INFO L85 PathProgramCache]: Analyzing trace with hash 2039386097, now seen corresponding path program 8 times [2022-02-15 03:11:11,840 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:11:11,840 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293575018] [2022-02-15 03:11:11,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:11:11,842 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:11:11,842 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:11:11,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:11:11,856 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:11:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:12,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:11:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:12,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:11:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:15,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-02-15 03:11:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:15,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-15 03:11:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:15,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:11:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:15,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-02-15 03:11:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:16,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-02-15 03:11:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:16,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:11:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:16,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:11:16,246 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:11:16,246 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293575018] [2022-02-15 03:11:16,246 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [293575018] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:11:16,246 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:11:16,246 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-02-15 03:11:16,246 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948086658] [2022-02-15 03:11:16,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:11:16,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-15 03:11:16,246 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:11:16,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-15 03:11:16,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2022-02-15 03:11:16,247 INFO L87 Difference]: Start difference. First operand 7294 states and 10813 transitions. Second operand has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 21 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:11:35,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:11:44,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:11:44,273 INFO L93 Difference]: Finished difference Result 15394 states and 23406 transitions. [2022-02-15 03:11:44,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 03:11:44,275 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 21 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2022-02-15 03:11:44,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:11:44,314 INFO L225 Difference]: With dead ends: 15394 [2022-02-15 03:11:44,315 INFO L226 Difference]: Without dead ends: 8086 [2022-02-15 03:11:44,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=359, Invalid=2611, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 03:11:44,342 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1508 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 6964 mSolverCounterSat, 732 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 2197 SdHoareTripleChecker+Invalid, 7697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 732 IncrementalHoareTripleChecker+Valid, 6964 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time [2022-02-15 03:11:44,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1538 Valid, 2197 Invalid, 7697 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [732 Valid, 6964 Invalid, 1 Unknown, 0 Unchecked, 20.1s Time] [2022-02-15 03:11:44,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8086 states. [2022-02-15 03:11:46,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8086 to 7315. [2022-02-15 03:11:46,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7315 states, 5911 states have (on average 1.4227711047200136) internal successors, (8410), 6061 states have internal predecessors, (8410), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:11:46,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7315 states to 7315 states and 10834 transitions. [2022-02-15 03:11:46,439 INFO L78 Accepts]: Start accepts. Automaton has 7315 states and 10834 transitions. Word has length 80 [2022-02-15 03:11:46,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:11:46,439 INFO L470 AbstractCegarLoop]: Abstraction has 7315 states and 10834 transitions. [2022-02-15 03:11:46,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 21 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:11:46,439 INFO L276 IsEmpty]: Start isEmpty. Operand 7315 states and 10834 transitions. [2022-02-15 03:11:46,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-02-15 03:11:46,440 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:11:46,440 INFO L514 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:11:46,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-15 03:11:46,440 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:11:46,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:11:46,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1676578836, now seen corresponding path program 10 times [2022-02-15 03:11:46,441 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:11:46,441 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391769950] [2022-02-15 03:11:46,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:11:46,442 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:11:46,442 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:11:46,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:11:46,455 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:11:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:46,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:11:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:46,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:11:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:50,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-02-15 03:11:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:50,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-15 03:11:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:50,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:11:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:50,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-02-15 03:11:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:51,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-02-15 03:11:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:51,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:11:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:11:51,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:11:51,456 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:11:51,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391769950] [2022-02-15 03:11:51,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [391769950] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:11:51,456 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:11:51,456 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-02-15 03:11:51,456 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929756705] [2022-02-15 03:11:51,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:11:51,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-15 03:11:51,456 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:11:51,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-15 03:11:51,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2022-02-15 03:11:51,457 INFO L87 Difference]: Start difference. First operand 7315 states and 10834 transitions. Second operand has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 22 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:12:08,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:12:10,455 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:12:19,560 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:12:29,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:12:29,416 INFO L93 Difference]: Finished difference Result 15435 states and 23447 transitions. [2022-02-15 03:12:29,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 03:12:29,417 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 22 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2022-02-15 03:12:29,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:12:29,460 INFO L225 Difference]: With dead ends: 15435 [2022-02-15 03:12:29,460 INFO L226 Difference]: Without dead ends: 8107 [2022-02-15 03:12:29,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=373, Invalid=2819, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 03:12:29,499 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2258 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 6929 mSolverCounterSat, 1034 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 7966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1034 IncrementalHoareTripleChecker+Valid, 6929 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.7s IncrementalHoareTripleChecker+Time [2022-02-15 03:12:29,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2288 Valid, 2272 Invalid, 7966 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1034 Valid, 6929 Invalid, 3 Unknown, 0 Unchecked, 29.7s Time] [2022-02-15 03:12:29,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8107 states. [2022-02-15 03:12:31,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8107 to 7336. [2022-02-15 03:12:31,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7336 states, 5932 states have (on average 1.4212744436952125) internal successors, (8431), 6082 states have internal predecessors, (8431), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:12:31,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7336 states to 7336 states and 10855 transitions. [2022-02-15 03:12:31,711 INFO L78 Accepts]: Start accepts. Automaton has 7336 states and 10855 transitions. Word has length 80 [2022-02-15 03:12:31,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:12:31,711 INFO L470 AbstractCegarLoop]: Abstraction has 7336 states and 10855 transitions. [2022-02-15 03:12:31,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 22 states have internal predecessors, (62), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:12:31,712 INFO L276 IsEmpty]: Start isEmpty. Operand 7336 states and 10855 transitions. [2022-02-15 03:12:31,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-02-15 03:12:31,712 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:12:31,712 INFO L514 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:12:31,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-15 03:12:31,713 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:12:31,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:12:31,713 INFO L85 PathProgramCache]: Analyzing trace with hash 2005497468, now seen corresponding path program 11 times [2022-02-15 03:12:31,713 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:12:31,713 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961764342] [2022-02-15 03:12:31,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:12:31,715 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:12:31,715 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:12:31,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:12:31,726 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:12:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:31,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:12:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:32,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:12:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:37,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-02-15 03:12:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:37,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-02-15 03:12:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:37,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:12:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:38,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-02-15 03:12:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:38,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-02-15 03:12:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:38,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:12:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:12:38,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:12:38,738 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:12:38,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961764342] [2022-02-15 03:12:38,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [961764342] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:12:38,738 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:12:38,738 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-02-15 03:12:38,738 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495643951] [2022-02-15 03:12:38,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:12:38,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 03:12:38,739 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:12:38,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 03:12:38,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2022-02-15 03:12:38,740 INFO L87 Difference]: Start difference. First operand 7336 states and 10855 transitions. Second operand has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 23 states have internal predecessors, (63), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:13:18,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:20,542 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:22,732 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:24,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:27,108 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:29,295 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:13:51,125 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 03:14:15,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 03:14:15,713 INFO L93 Difference]: Finished difference Result 15476 states and 23488 transitions. [2022-02-15 03:14:15,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 03:14:15,715 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 23 states have internal predecessors, (63), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 81 [2022-02-15 03:14:15,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 03:14:15,763 INFO L225 Difference]: With dead ends: 15476 [2022-02-15 03:14:15,763 INFO L226 Difference]: Without dead ends: 8128 [2022-02-15 03:14:15,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=387, Invalid=3035, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 03:14:15,793 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 2360 mSDsluCounter, 4235 mSDsCounter, 0 mSdLazyCounter, 17248 mSolverCounterSat, 1098 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2390 SdHoareTripleChecker+Valid, 4935 SdHoareTripleChecker+Invalid, 18353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1098 IncrementalHoareTripleChecker+Valid, 17248 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85.3s IncrementalHoareTripleChecker+Time [2022-02-15 03:14:15,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2390 Valid, 4935 Invalid, 18353 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1098 Valid, 17248 Invalid, 7 Unknown, 0 Unchecked, 85.3s Time] [2022-02-15 03:14:15,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8128 states. [2022-02-15 03:14:18,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8128 to 7357. [2022-02-15 03:14:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7357 states, 5953 states have (on average 1.4197883420124306) internal successors, (8452), 6103 states have internal predecessors, (8452), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-02-15 03:14:18,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7357 states to 7357 states and 10876 transitions. [2022-02-15 03:14:18,333 INFO L78 Accepts]: Start accepts. Automaton has 7357 states and 10876 transitions. Word has length 81 [2022-02-15 03:14:18,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 03:14:18,333 INFO L470 AbstractCegarLoop]: Abstraction has 7357 states and 10876 transitions. [2022-02-15 03:14:18,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 23 states have internal predecessors, (63), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-15 03:14:18,333 INFO L276 IsEmpty]: Start isEmpty. Operand 7357 states and 10876 transitions. [2022-02-15 03:14:18,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-15 03:14:18,334 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 03:14:18,334 INFO L514 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 03:14:18,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-15 03:14:18,334 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 03:14:18,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 03:14:18,335 INFO L85 PathProgramCache]: Analyzing trace with hash -970980223, now seen corresponding path program 9 times [2022-02-15 03:14:18,335 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 03:14:18,335 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41374288] [2022-02-15 03:14:18,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 03:14:18,336 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-15 03:14:18,336 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-02-15 03:14:18,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 03:14:18,349 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 03:14:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:14:18,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 03:14:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:14:18,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 03:14:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:14:25,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-02-15 03:14:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:14:25,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-15 03:14:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:14:26,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:14:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:14:26,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-02-15 03:14:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:14:26,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-02-15 03:14:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:14:27,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-15 03:14:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 03:14:27,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 03:14:27,351 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 03:14:27,351 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41374288] [2022-02-15 03:14:27,351 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [41374288] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 03:14:27,351 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 03:14:27,351 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-02-15 03:14:27,351 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157300717] [2022-02-15 03:14:27,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 03:14:27,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-15 03:14:27,353 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 03:14:27,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-15 03:14:27,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2022-02-15 03:14:27,354 INFO L87 Difference]: Start difference. First operand 7357 states and 10876 transitions. Second operand has 32 states, 32 states have (on average 2.03125) internal successors, (65), 24 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)