/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-3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-19 06:57:58,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 06:57:58,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 06:57:58,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-19 06:57:58,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-19 06:57:58,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-19 06:57:58,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-19 06:57:58,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-19 06:57:58,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-19 06:57:58,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-19 06:57:58,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-19 06:57:58,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-19 06:57:58,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-19 06:57:58,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-19 06:57:58,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-19 06:57:59,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-19 06:57:59,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-19 06:57:59,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-19 06:57:59,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-19 06:57:59,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-19 06:57:59,008 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-19 06:57:59,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-19 06:57:59,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-19 06:57:59,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-19 06:57:59,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-19 06:57:59,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-19 06:57:59,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 06:57:59,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 06:57:59,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 06:57:59,023 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-03-19 06:57:59,031 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 06:57:59,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 06:57:59,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 06:57:59,033 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-19 06:57:59,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 06:57:59,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-19 06:57:59,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 06:57:59,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 06:57:59,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 06:57:59,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 06:57:59,034 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-19 06:57:59,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 06:57:59,034 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 06:57:59,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 06:57:59,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 06:57:59,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 06:57:59,035 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-19 06:57:59,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 06:57:59,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 06:57:59,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 06:57:59,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-19 06:57:59,035 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-19 06:57:59,035 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-19 06:57:59,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 06:57:59,035 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-19 06:57:59,036 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 06:57:59,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 06:57:59,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 06:57:59,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 06:57:59,230 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 06:57:59,232 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 06:57:59,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c [2022-03-19 06:57:59,267 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/383fa1cda/e97810b55f374d59a668c944ec47c6f5/FLAGe780fb9d2 [2022-03-19 06:57:59,782 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 06:57:59,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c [2022-03-19 06:57:59,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/383fa1cda/e97810b55f374d59a668c944ec47c6f5/FLAGe780fb9d2 [2022-03-19 06:58:00,053 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/383fa1cda/e97810b55f374d59a668c944ec47c6f5 [2022-03-19 06:58:00,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 06:58:00,056 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 06:58:00,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 06:58:00,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 06:58:00,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 06:58:00,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 06:58:00" (1/1) ... [2022-03-19 06:58:00,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d042187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:58:00, skipping insertion in model container [2022-03-19 06:58:00,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 06:58:00" (1/1) ... [2022-03-19 06:58:00,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 06:58:00,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 06:58:00,562 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c[77246,77259] [2022-03-19 06:58:00,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 06:58:00,958 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 06:58:01,002 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c[77246,77259] [2022-03-19 06:58:01,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 06:58:01,246 INFO L208 MainTranslator]: Completed translation [2022-03-19 06:58:01,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:58:01 WrapperNode [2022-03-19 06:58:01,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 06:58:01,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 06:58:01,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 06:58:01,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 06:58:01,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:58:01" (1/1) ... [2022-03-19 06:58:01,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:58:01" (1/1) ... [2022-03-19 06:58:01,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:58:01" (1/1) ... [2022-03-19 06:58:01,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:58:01" (1/1) ... [2022-03-19 06:58:01,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:58:01" (1/1) ... [2022-03-19 06:58:01,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:58:01" (1/1) ... [2022-03-19 06:58:01,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:58:01" (1/1) ... [2022-03-19 06:58:01,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 06:58:01,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 06:58:01,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 06:58:01,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 06:58:01,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:58:01" (1/1) ... [2022-03-19 06:58:01,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 06:58:01,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 06:58:01,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-19 06:58:01,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-19 06:58:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 06:58:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 06:58:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 06:58:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-03-19 06:58:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-03-19 06:58:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-19 06:58:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-19 06:58:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-03-19 06:58:01,659 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyUnload [2022-03-19 06:58:01,659 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyAddDevice [2022-03-19 06:58:01,659 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConfigCallBack [2022-03-19 06:58:01,659 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-03-19 06:58:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-03-19 06:58:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-03-19 06:58:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-03-19 06:58:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-03-19 06:58:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-03-19 06:58:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-03-19 06:58:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPower [2022-03-19 06:58:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyReadWrite [2022-03-19 06:58:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInterpretError [2022-03-19 06:58:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFinishOperation [2022-03-19 06:58:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure FlStartDrive [2022-03-19 06:58:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDatarateSpecifyConfigure [2022-03-19 06:58:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure FlRecalibrateDrive [2022-03-19 06:58:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDetermineMediaType [2022-03-19 06:58:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAllocateIoBuffer [2022-03-19 06:58:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFreeIoBuffer [2022-03-19 06:58:01,661 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyThread [2022-03-19 06:58:01,661 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConsolidateMediaTypeWithBootSector [2022-03-19 06:58:01,661 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckBootSector [2022-03-19 06:58:01,661 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWriteTrack [2022-03-19 06:58:01,661 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWrite [2022-03-19 06:58:01,661 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFormat [2022-03-19 06:58:01,661 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2022-03-19 06:58:01,661 INFO L138 BoogieDeclarations]: Found implementation of procedure FlIssueCommand [2022-03-19 06:58:01,661 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInitializeControllerHardware [2022-03-19 06:58:01,661 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-03-19 06:58:01,661 INFO L138 BoogieDeclarations]: Found implementation of procedure FlHdbit [2022-03-19 06:58:01,661 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-03-19 06:58:01,661 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCancelQueuedRequest [2022-03-19 06:58:01,661 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-03-19 06:58:01,661 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-19 06:58:01,661 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 06:58:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-03-19 06:58:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-03-19 06:58:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-03-19 06:58:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-03-19 06:58:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-03-19 06:58:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-03-19 06:58:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-03-19 06:58:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-03-19 06:58:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-03-19 06:58:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-03-19 06:58:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-19 06:58:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-03-19 06:58:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-03-19 06:58:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-03-19 06:58:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-03-19 06:58:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-03-19 06:58:01,663 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-03-19 06:58:01,663 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-03-19 06:58:01,663 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-03-19 06:58:01,663 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-03-19 06:58:01,663 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-03-19 06:58:01,663 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-03-19 06:58:01,663 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-03-19 06:58:01,663 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-03-19 06:58:01,663 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-19 06:58:01,663 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-19 06:58:01,663 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-19 06:58:01,663 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-03-19 06:58:01,663 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-03-19 06:58:01,663 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-03-19 06:58:01,663 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-03-19 06:58:01,663 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-03-19 06:58:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-03-19 06:58:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-03-19 06:58:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-19 06:58:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-19 06:58:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-03-19 06:58:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-03-19 06:58:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-03-19 06:58:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-03-19 06:58:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-03-19 06:58:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-03-19 06:58:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-03-19 06:58:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-03-19 06:58:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-19 06:58:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-03-19 06:58:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-03-19 06:58:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-03-19 06:58:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-03-19 06:58:01,665 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-03-19 06:58:01,665 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-03-19 06:58:01,665 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-03-19 06:58:01,665 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-03-19 06:58:01,665 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-03-19 06:58:01,665 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-03-19 06:58:01,665 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-03-19 06:58:01,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-19 06:58:01,665 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-03-19 06:58:01,665 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-03-19 06:58:01,665 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-03-19 06:58:01,665 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 06:58:01,665 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 06:58:01,665 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 06:58:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 06:58:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-19 06:58:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-19 06:58:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-19 06:58:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-19 06:58:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-03-19 06:58:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2022-03-19 06:58:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure swprintf [2022-03-19 06:58:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-19 06:58:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-03-19 06:58:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-03-19 06:58:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-03-19 06:58:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-03-19 06:58:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-03-19 06:58:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-03-19 06:58:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-03-19 06:58:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-03-19 06:58:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-03-19 06:58:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-03-19 06:58:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-03-19 06:58:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 06:58:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 06:58:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-03-19 06:58:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-19 06:58:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-03-19 06:58:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-03-19 06:58:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-03-19 06:58:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-19 06:58:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-03-19 06:58:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-03-19 06:58:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-03-19 06:58:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-03-19 06:58:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-03-19 06:58:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-03-19 06:58:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-03-19 06:58:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-03-19 06:58:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-03-19 06:58:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-03-19 06:58:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-03-19 06:58:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-03-19 06:58:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-03-19 06:58:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-03-19 06:58:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-03-19 06:58:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-03-19 06:58:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-03-19 06:58:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-03-19 06:58:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-03-19 06:58:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-03-19 06:58:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-19 06:58:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-19 06:58:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-19 06:58:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-03-19 06:58:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-03-19 06:58:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-03-19 06:58:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-03-19 06:58:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-03-19 06:58:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-03-19 06:58:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-03-19 06:58:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-03-19 06:58:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-03-19 06:58:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-03-19 06:58:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-03-19 06:58:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-03-19 06:58:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-03-19 06:58:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-19 06:58:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-03-19 06:58:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-03-19 06:58:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-03-19 06:58:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-19 06:58:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-03-19 06:58:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyUnload [2022-03-19 06:58:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure FlConfigCallBack [2022-03-19 06:58:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure FlInitializeControllerHardware [2022-03-19 06:58:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-03-19 06:58:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-03-19 06:58:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyReadWrite [2022-03-19 06:58:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure FlRecalibrateDrive [2022-03-19 06:58:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure FlDatarateSpecifyConfigure [2022-03-19 06:58:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure FlStartDrive [2022-03-19 06:58:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure FlFinishOperation [2022-03-19 06:58:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure FlDetermineMediaType [2022-03-19 06:58:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyThread [2022-03-19 06:58:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWrite [2022-03-19 06:58:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure FlFormat [2022-03-19 06:58:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure FlIssueCommand [2022-03-19 06:58:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2022-03-19 06:58:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-03-19 06:58:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure FlInterpretError [2022-03-19 06:58:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure FlAllocateIoBuffer [2022-03-19 06:58:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure FlFreeIoBuffer [2022-03-19 06:58:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure FlConsolidateMediaTypeWithBootSector [2022-03-19 06:58:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckBootSector [2022-03-19 06:58:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWriteTrack [2022-03-19 06:58:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-03-19 06:58:01,676 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyAddDevice [2022-03-19 06:58:01,676 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-03-19 06:58:01,679 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPower [2022-03-19 06:58:01,679 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-03-19 06:58:01,679 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-03-19 06:58:01,680 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-03-19 06:58:01,680 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-03-19 06:58:01,681 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCancelQueuedRequest [2022-03-19 06:58:01,681 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-03-19 06:58:01,681 INFO L130 BoogieDeclarations]: Found specification of procedure FlHdbit [2022-03-19 06:58:01,681 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-19 06:58:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-19 06:58:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-19 06:58:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-19 06:58:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-19 06:58:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 06:58:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-03-19 06:58:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-03-19 06:58:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-03-19 06:58:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-19 06:58:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-19 06:58:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 06:58:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-19 06:58:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-03-19 06:58:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 06:58:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 06:58:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 06:58:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-19 06:58:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-19 06:58:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-19 06:58:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-19 06:58:02,174 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 06:58:02,178 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 06:58:02,209 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:02,271 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:58:02,271 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:58:02,271 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:02,276 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:58:02,276 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:58:04,057 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:04,061 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:58:04,061 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:58:04,061 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:04,068 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:58:04,068 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:58:04,071 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:04,076 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:58:04,076 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:58:04,114 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:04,126 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:58:04,126 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:58:04,127 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:04,136 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:58:04,136 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:58:04,137 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:04,144 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:58:04,144 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:58:04,201 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:04,244 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-03-19 06:58:04,244 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-03-19 06:58:04,297 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:04,301 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:58:04,301 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:58:04,301 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:04,304 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:58:04,305 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:58:04,305 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:04,310 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:58:04,310 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:58:04,318 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:04,336 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:58:04,336 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:58:04,336 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:04,339 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:58:04,340 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:58:10,418 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:10,431 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-19 06:58:10,431 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-19 06:58:10,483 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:10,905 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-03-19 06:58:10,905 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-03-19 06:58:11,204 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:11,208 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:58:11,208 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:58:11,261 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:11,285 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-03-19 06:58:11,285 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-03-19 06:58:11,287 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:11,395 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-19 06:58:11,396 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-19 06:58:11,396 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:11,442 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-03-19 06:58:11,442 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-03-19 06:58:21,213 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:21,217 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:58:21,217 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:58:21,280 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:21,283 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:58:21,283 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:58:21,296 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:22,777 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-03-19 06:58:22,778 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-03-19 06:58:22,807 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:22,977 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-03-19 06:58:22,978 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-03-19 06:58:22,979 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:22,991 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-19 06:58:22,991 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-19 06:58:22,991 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:23,016 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-19 06:58:23,016 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-19 06:58:23,019 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:23,026 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-19 06:58:23,026 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-19 06:58:23,056 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:23,059 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:58:23,059 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:58:23,067 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:23,071 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:58:23,071 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:58:23,071 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:23,128 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume !false; [2022-03-19 06:58:23,128 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume false; [2022-03-19 06:58:23,167 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:58:25,525 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2022-03-19 06:58:25,525 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2022-03-19 06:58:25,562 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 06:58:25,579 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 06:58:25,579 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2022-03-19 06:58:25,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 06:58:25 BoogieIcfgContainer [2022-03-19 06:58:25,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 06:58:25,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 06:58:25,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 06:58:25,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 06:58:25,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 06:58:00" (1/3) ... [2022-03-19 06:58:25,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bd059d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 06:58:25, skipping insertion in model container [2022-03-19 06:58:25,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:58:01" (2/3) ... [2022-03-19 06:58:25,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bd059d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 06:58:25, skipping insertion in model container [2022-03-19 06:58:25,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 06:58:25" (3/3) ... [2022-03-19 06:58:25,599 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-3.c [2022-03-19 06:58:25,602 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-19 06:58:25,602 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 06:58:25,633 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 06:58:25,637 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, 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 [2022-03-19 06:58:25,637 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 06:58:25,670 INFO L276 IsEmpty]: Start isEmpty. Operand has 1463 states, 1158 states have (on average 1.5215889464594128) internal successors, (1762), 1199 states have internal predecessors, (1762), 227 states have call successors, (227), 73 states have call predecessors, (227), 73 states have return successors, (227), 221 states have call predecessors, (227), 227 states have call successors, (227) [2022-03-19 06:58:25,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-19 06:58:25,678 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:58:25,678 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:58:25,679 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:58:25,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:58:25,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1208806804, now seen corresponding path program 1 times [2022-03-19 06:58:25,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:58:25,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2038603766] [2022-03-19 06:58:25,693 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:58:25,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1208806804, now seen corresponding path program 2 times [2022-03-19 06:58:25,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:58:25,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951697745] [2022-03-19 06:58:25,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:58:25,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:58:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:26,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:58:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:26,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:58:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:26,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:58:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:26,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 06:58:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:26,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:58:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:26,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:58:26,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:58:26,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951697745] [2022-03-19 06:58:26,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951697745] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:58:26,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:58:26,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:58:26,443 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:58:26,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2038603766] [2022-03-19 06:58:26,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2038603766] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:58:26,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:58:26,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:58:26,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830752069] [2022-03-19 06:58:26,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:58:26,446 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 06:58:26,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:58:26,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 06:58:26,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-19 06:58:26,473 INFO L87 Difference]: Start difference. First operand has 1463 states, 1158 states have (on average 1.5215889464594128) internal successors, (1762), 1199 states have internal predecessors, (1762), 227 states have call successors, (227), 73 states have call predecessors, (227), 73 states have return successors, (227), 221 states have call predecessors, (227), 227 states have call successors, (227) Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:58:34,361 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:58:35,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:58:35,547 INFO L93 Difference]: Finished difference Result 1453 states and 2231 transitions. [2022-03-19 06:58:35,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 06:58:35,561 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2022-03-19 06:58:35,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:58:35,592 INFO L225 Difference]: With dead ends: 1453 [2022-03-19 06:58:35,593 INFO L226 Difference]: Without dead ends: 858 [2022-03-19 06:58:35,601 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-03-19 06:58:35,605 INFO L912 BasicCegarLoop]: 747 mSDtfsCounter, 1345 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 3103 mSolverCounterSat, 617 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 3721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 3103 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-03-19 06:58:35,610 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1379 Valid, 1283 Invalid, 3721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [617 Valid, 3103 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2022-03-19 06:58:35,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2022-03-19 06:58:35,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 670. [2022-03-19 06:58:35,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 502 states have (on average 1.4203187250996017) internal successors, (713), 534 states have internal predecessors, (713), 121 states have call successors, (121), 48 states have call predecessors, (121), 46 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-03-19 06:58:35,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 931 transitions. [2022-03-19 06:58:35,748 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 931 transitions. Word has length 37 [2022-03-19 06:58:35,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:58:35,749 INFO L478 AbstractCegarLoop]: Abstraction has 670 states and 931 transitions. [2022-03-19 06:58:35,749 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:58:35,749 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 931 transitions. [2022-03-19 06:58:35,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-19 06:58:35,750 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:58:35,750 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:58:35,764 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 06:58:35,765 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:58:35,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:58:35,766 INFO L85 PathProgramCache]: Analyzing trace with hash 171558063, now seen corresponding path program 1 times [2022-03-19 06:58:35,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:58:35,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1932893954] [2022-03-19 06:58:35,766 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:58:35,766 INFO L85 PathProgramCache]: Analyzing trace with hash 171558063, now seen corresponding path program 2 times [2022-03-19 06:58:35,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:58:35,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494581328] [2022-03-19 06:58:35,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:58:35,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:58:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:36,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:58:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:36,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:58:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:36,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:58:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:36,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 06:58:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:36,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:58:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:36,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 06:58:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:36,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:58:36,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:58:36,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494581328] [2022-03-19 06:58:36,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494581328] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:58:36,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:58:36,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:58:36,270 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:58:36,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1932893954] [2022-03-19 06:58:36,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1932893954] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:58:36,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:58:36,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:58:36,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338147712] [2022-03-19 06:58:36,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:58:36,271 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 06:58:36,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:58:36,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 06:58:36,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-19 06:58:36,272 INFO L87 Difference]: Start difference. First operand 670 states and 931 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:58:42,483 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:58:46,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:58:46,242 INFO L93 Difference]: Finished difference Result 1951 states and 2856 transitions. [2022-03-19 06:58:46,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-19 06:58:46,242 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2022-03-19 06:58:46,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:58:46,251 INFO L225 Difference]: With dead ends: 1951 [2022-03-19 06:58:46,251 INFO L226 Difference]: Without dead ends: 1471 [2022-03-19 06:58:46,252 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-03-19 06:58:46,253 INFO L912 BasicCegarLoop]: 940 mSDtfsCounter, 3479 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 3510 mSolverCounterSat, 1400 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3520 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 4911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1400 IncrementalHoareTripleChecker+Valid, 3510 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-03-19 06:58:46,253 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3520 Valid, 1665 Invalid, 4911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1400 Valid, 3510 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2022-03-19 06:58:46,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2022-03-19 06:58:46,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1230. [2022-03-19 06:58:46,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 946 states have (on average 1.4038054968287526) internal successors, (1328), 977 states have internal predecessors, (1328), 187 states have call successors, (187), 83 states have call predecessors, (187), 96 states have return successors, (247), 179 states have call predecessors, (247), 171 states have call successors, (247) [2022-03-19 06:58:46,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1762 transitions. [2022-03-19 06:58:46,377 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1762 transitions. Word has length 42 [2022-03-19 06:58:46,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:58:46,377 INFO L478 AbstractCegarLoop]: Abstraction has 1230 states and 1762 transitions. [2022-03-19 06:58:46,377 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:58:46,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1762 transitions. [2022-03-19 06:58:46,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-19 06:58:46,385 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:58:46,385 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:58:46,385 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-19 06:58:46,385 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:58:46,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:58:46,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1220689, now seen corresponding path program 1 times [2022-03-19 06:58:46,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:58:46,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1447847832] [2022-03-19 06:58:46,386 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:58:46,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1220689, now seen corresponding path program 2 times [2022-03-19 06:58:46,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:58:46,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327143174] [2022-03-19 06:58:46,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:58:46,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:58:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:46,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:58:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:46,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:58:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:46,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:58:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:46,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 06:58:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:46,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:58:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:46,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 06:58:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:46,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-19 06:58:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:46,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:58:46,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:58:46,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327143174] [2022-03-19 06:58:46,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327143174] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:58:46,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:58:46,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:58:46,989 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:58:46,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1447847832] [2022-03-19 06:58:46,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1447847832] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:58:46,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:58:46,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:58:46,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692928470] [2022-03-19 06:58:46,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:58:46,990 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 06:58:46,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:58:46,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 06:58:46,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-19 06:58:46,994 INFO L87 Difference]: Start difference. First operand 1230 states and 1762 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 06:58:52,322 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:58:55,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:58:55,515 INFO L93 Difference]: Finished difference Result 2279 states and 3379 transitions. [2022-03-19 06:58:55,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-19 06:58:55,515 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2022-03-19 06:58:55,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:58:55,525 INFO L225 Difference]: With dead ends: 2279 [2022-03-19 06:58:55,525 INFO L226 Difference]: Without dead ends: 2260 [2022-03-19 06:58:55,526 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-03-19 06:58:55,526 INFO L912 BasicCegarLoop]: 722 mSDtfsCounter, 3868 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 2854 mSolverCounterSat, 1490 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3928 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 4345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1490 IncrementalHoareTripleChecker+Valid, 2854 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-03-19 06:58:55,526 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3928 Valid, 1302 Invalid, 4345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1490 Valid, 2854 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2022-03-19 06:58:55,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2022-03-19 06:58:55,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 1905. [2022-03-19 06:58:55,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1476 states have (on average 1.420731707317073) internal successors, (2097), 1527 states have internal predecessors, (2097), 279 states have call successors, (279), 129 states have call predecessors, (279), 149 states have return successors, (393), 262 states have call predecessors, (393), 263 states have call successors, (393) [2022-03-19 06:58:55,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2769 transitions. [2022-03-19 06:58:55,802 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2769 transitions. Word has length 54 [2022-03-19 06:58:55,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:58:55,802 INFO L478 AbstractCegarLoop]: Abstraction has 1905 states and 2769 transitions. [2022-03-19 06:58:55,802 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 06:58:55,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2769 transitions. [2022-03-19 06:58:55,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-19 06:58:55,803 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:58:55,803 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:58:55,803 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-19 06:58:55,803 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:58:55,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:58:55,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1955103331, now seen corresponding path program 1 times [2022-03-19 06:58:55,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:58:55,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [896245349] [2022-03-19 06:58:55,804 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:58:55,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1955103331, now seen corresponding path program 2 times [2022-03-19 06:58:55,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:58:55,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911044313] [2022-03-19 06:58:55,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:58:55,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:58:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:56,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:58:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:56,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:58:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:56,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:58:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:56,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 06:58:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:56,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:58:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:56,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 06:58:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:56,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:58:56,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:58:56,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911044313] [2022-03-19 06:58:56,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911044313] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:58:56,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:58:56,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:58:56,299 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:58:56,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [896245349] [2022-03-19 06:58:56,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [896245349] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:58:56,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:58:56,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:58:56,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655762726] [2022-03-19 06:58:56,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:58:56,300 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 06:58:56,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:58:56,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 06:58:56,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-19 06:58:56,300 INFO L87 Difference]: Start difference. First operand 1905 states and 2769 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:59:02,775 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:04,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:59:04,417 INFO L93 Difference]: Finished difference Result 2254 states and 3363 transitions. [2022-03-19 06:59:04,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 06:59:04,418 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-03-19 06:59:04,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:59:04,446 INFO L225 Difference]: With dead ends: 2254 [2022-03-19 06:59:04,447 INFO L226 Difference]: Without dead ends: 2250 [2022-03-19 06:59:04,461 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-03-19 06:59:04,461 INFO L912 BasicCegarLoop]: 726 mSDtfsCounter, 1720 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 3121 mSolverCounterSat, 754 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 3876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 754 IncrementalHoareTripleChecker+Valid, 3121 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-03-19 06:59:04,462 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 1278 Invalid, 3876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [754 Valid, 3121 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-03-19 06:59:04,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2022-03-19 06:59:04,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 1942. [2022-03-19 06:59:04,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1509 states have (on average 1.420808482438701) internal successors, (2144), 1557 states have internal predecessors, (2144), 281 states have call successors, (281), 132 states have call predecessors, (281), 151 states have return successors, (395), 264 states have call predecessors, (395), 265 states have call successors, (395) [2022-03-19 06:59:04,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 2820 transitions. [2022-03-19 06:59:04,763 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 2820 transitions. Word has length 55 [2022-03-19 06:59:04,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:59:04,763 INFO L478 AbstractCegarLoop]: Abstraction has 1942 states and 2820 transitions. [2022-03-19 06:59:04,763 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:59:04,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 2820 transitions. [2022-03-19 06:59:04,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-19 06:59:04,765 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:59:04,765 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:59:04,765 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-19 06:59:04,765 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:59:04,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:59:04,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1599289490, now seen corresponding path program 1 times [2022-03-19 06:59:04,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:04,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1217628965] [2022-03-19 06:59:04,766 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:59:04,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1599289490, now seen corresponding path program 2 times [2022-03-19 06:59:04,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:59:04,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954637830] [2022-03-19 06:59:04,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:59:04,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:59:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:04,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:59:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:05,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:59:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:05,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:59:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:05,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 06:59:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:05,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:59:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:05,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 06:59:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:05,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:59:05,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:59:05,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954637830] [2022-03-19 06:59:05,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954637830] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:59:05,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:59:05,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:59:05,165 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:59:05,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1217628965] [2022-03-19 06:59:05,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1217628965] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:59:05,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:59:05,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:59:05,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030036880] [2022-03-19 06:59:05,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:59:05,166 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 06:59:05,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:05,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 06:59:05,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-19 06:59:05,166 INFO L87 Difference]: Start difference. First operand 1942 states and 2820 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:59:12,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:16,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:59:16,876 INFO L93 Difference]: Finished difference Result 3881 states and 5849 transitions. [2022-03-19 06:59:16,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-19 06:59:16,877 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-03-19 06:59:16,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:59:16,891 INFO L225 Difference]: With dead ends: 3881 [2022-03-19 06:59:16,891 INFO L226 Difference]: Without dead ends: 3878 [2022-03-19 06:59:16,892 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-03-19 06:59:16,897 INFO L912 BasicCegarLoop]: 1153 mSDtfsCounter, 2146 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 4388 mSolverCounterSat, 911 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2192 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 5300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 911 IncrementalHoareTripleChecker+Valid, 4388 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-03-19 06:59:16,897 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2192 Valid, 1874 Invalid, 5300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [911 Valid, 4388 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-03-19 06:59:16,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2022-03-19 06:59:17,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3105. [2022-03-19 06:59:17,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3105 states, 2444 states have (on average 1.4320785597381342) internal successors, (3500), 2499 states have internal predecessors, (3500), 415 states have call successors, (415), 218 states have call predecessors, (415), 245 states have return successors, (609), 399 states have call predecessors, (609), 399 states have call successors, (609) [2022-03-19 06:59:17,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3105 states to 3105 states and 4524 transitions. [2022-03-19 06:59:17,409 INFO L78 Accepts]: Start accepts. Automaton has 3105 states and 4524 transitions. Word has length 55 [2022-03-19 06:59:17,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:59:17,411 INFO L478 AbstractCegarLoop]: Abstraction has 3105 states and 4524 transitions. [2022-03-19 06:59:17,411 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:59:17,411 INFO L276 IsEmpty]: Start isEmpty. Operand 3105 states and 4524 transitions. [2022-03-19 06:59:17,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-19 06:59:17,412 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:59:17,413 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:59:17,413 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-19 06:59:17,413 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:59:17,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:59:17,413 INFO L85 PathProgramCache]: Analyzing trace with hash 2095199445, now seen corresponding path program 1 times [2022-03-19 06:59:17,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:17,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1158389962] [2022-03-19 06:59:17,414 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:59:17,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2095199445, now seen corresponding path program 2 times [2022-03-19 06:59:17,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:59:17,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168968481] [2022-03-19 06:59:17,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:59:17,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:59:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:17,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:59:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:17,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:59:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:17,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:59:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:17,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 06:59:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:17,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:59:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:17,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 06:59:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:17,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:59:17,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:59:17,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168968481] [2022-03-19 06:59:17,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168968481] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:59:17,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:59:17,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:59:17,901 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:59:17,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1158389962] [2022-03-19 06:59:17,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1158389962] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:59:17,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:59:17,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:59:17,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880698156] [2022-03-19 06:59:17,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:59:17,902 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 06:59:17,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:17,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 06:59:17,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-19 06:59:17,903 INFO L87 Difference]: Start difference. First operand 3105 states and 4524 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 06:59:24,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:32,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:59:32,257 INFO L93 Difference]: Finished difference Result 6653 states and 9861 transitions. [2022-03-19 06:59:32,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-19 06:59:32,261 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-03-19 06:59:32,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:59:32,295 INFO L225 Difference]: With dead ends: 6653 [2022-03-19 06:59:32,295 INFO L226 Difference]: Without dead ends: 3833 [2022-03-19 06:59:32,302 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2022-03-19 06:59:32,303 INFO L912 BasicCegarLoop]: 981 mSDtfsCounter, 5008 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 6688 mSolverCounterSat, 2196 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5054 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 8885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2196 IncrementalHoareTripleChecker+Valid, 6688 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-03-19 06:59:32,304 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [5054 Valid, 2055 Invalid, 8885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2196 Valid, 6688 Invalid, 1 Unknown, 0 Unchecked, 11.8s Time] [2022-03-19 06:59:32,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2022-03-19 06:59:32,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 3099. [2022-03-19 06:59:32,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3099 states, 2438 states have (on average 1.4298605414273995) internal successors, (3486), 2493 states have internal predecessors, (3486), 415 states have call successors, (415), 218 states have call predecessors, (415), 245 states have return successors, (609), 399 states have call predecessors, (609), 399 states have call successors, (609) [2022-03-19 06:59:32,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 4510 transitions. [2022-03-19 06:59:32,793 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 4510 transitions. Word has length 56 [2022-03-19 06:59:32,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:59:32,793 INFO L478 AbstractCegarLoop]: Abstraction has 3099 states and 4510 transitions. [2022-03-19 06:59:32,793 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 06:59:32,793 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 4510 transitions. [2022-03-19 06:59:32,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-19 06:59:32,794 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:59:32,794 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:59:32,795 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-19 06:59:32,795 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:59:32,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:59:32,795 INFO L85 PathProgramCache]: Analyzing trace with hash 2082718779, now seen corresponding path program 1 times [2022-03-19 06:59:32,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:32,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1344403287] [2022-03-19 06:59:32,795 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:59:32,796 INFO L85 PathProgramCache]: Analyzing trace with hash 2082718779, now seen corresponding path program 2 times [2022-03-19 06:59:32,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:59:32,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132884478] [2022-03-19 06:59:32,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:59:32,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:59:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:33,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:59:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:33,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:59:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:33,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:59:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:33,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 06:59:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:33,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:59:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:33,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 06:59:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:33,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-19 06:59:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:33,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:59:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:33,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:59:33,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:59:33,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132884478] [2022-03-19 06:59:33,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132884478] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:59:33,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:59:33,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:59:33,291 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:59:33,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1344403287] [2022-03-19 06:59:33,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1344403287] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:59:33,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:59:33,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:59:33,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863528922] [2022-03-19 06:59:33,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:59:33,291 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 06:59:33,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:33,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 06:59:33,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-19 06:59:33,292 INFO L87 Difference]: Start difference. First operand 3099 states and 4510 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 06:59:37,990 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:41,972 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:46,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:59:46,408 INFO L93 Difference]: Finished difference Result 4462 states and 6724 transitions. [2022-03-19 06:59:46,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-19 06:59:46,458 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 56 [2022-03-19 06:59:46,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:59:46,473 INFO L225 Difference]: With dead ends: 4462 [2022-03-19 06:59:46,474 INFO L226 Difference]: Without dead ends: 4457 [2022-03-19 06:59:46,474 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2022-03-19 06:59:46,475 INFO L912 BasicCegarLoop]: 1060 mSDtfsCounter, 2954 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 4421 mSolverCounterSat, 1423 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2988 SdHoareTripleChecker+Valid, 2028 SdHoareTripleChecker+Invalid, 5846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1423 IncrementalHoareTripleChecker+Valid, 4421 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:59:46,476 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2988 Valid, 2028 Invalid, 5846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1423 Valid, 4421 Invalid, 2 Unknown, 0 Unchecked, 11.6s Time] [2022-03-19 06:59:46,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4457 states. [2022-03-19 06:59:46,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4457 to 3755. [2022-03-19 06:59:46,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 2956 states have (on average 1.4336941813261164) internal successors, (4238), 3023 states have internal predecessors, (4238), 500 states have call successors, (500), 258 states have call predecessors, (500), 298 states have return successors, (751), 491 states have call predecessors, (751), 484 states have call successors, (751) [2022-03-19 06:59:47,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5489 transitions. [2022-03-19 06:59:47,052 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5489 transitions. Word has length 56 [2022-03-19 06:59:47,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:59:47,053 INFO L478 AbstractCegarLoop]: Abstraction has 3755 states and 5489 transitions. [2022-03-19 06:59:47,053 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 06:59:47,053 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5489 transitions. [2022-03-19 06:59:47,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-19 06:59:47,054 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:59:47,054 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:59:47,054 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-19 06:59:47,054 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:59:47,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:59:47,055 INFO L85 PathProgramCache]: Analyzing trace with hash 590370335, now seen corresponding path program 1 times [2022-03-19 06:59:47,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:47,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [448941121] [2022-03-19 06:59:47,055 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:59:47,055 INFO L85 PathProgramCache]: Analyzing trace with hash 590370335, now seen corresponding path program 2 times [2022-03-19 06:59:47,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:59:47,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176529975] [2022-03-19 06:59:47,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:59:47,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:59:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:47,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:59:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:47,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:59:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:47,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:59:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:47,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 06:59:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:47,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:59:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:47,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 06:59:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:47,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-19 06:59:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:47,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:59:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:47,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:59:47,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:59:47,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176529975] [2022-03-19 06:59:47,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176529975] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:59:47,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:59:47,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:59:47,542 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:59:47,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [448941121] [2022-03-19 06:59:47,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [448941121] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:59:47,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:59:47,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:59:47,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91623738] [2022-03-19 06:59:47,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:59:47,543 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 06:59:47,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:47,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 06:59:47,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-19 06:59:47,543 INFO L87 Difference]: Start difference. First operand 3755 states and 5489 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:59:55,833 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:00:01,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:00:01,155 INFO L93 Difference]: Finished difference Result 4457 states and 6713 transitions. [2022-03-19 07:00:01,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-19 07:00:01,156 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2022-03-19 07:00:01,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:00:01,176 INFO L225 Difference]: With dead ends: 4457 [2022-03-19 07:00:01,176 INFO L226 Difference]: Without dead ends: 4451 [2022-03-19 07:00:01,177 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2022-03-19 07:00:01,178 INFO L912 BasicCegarLoop]: 1033 mSDtfsCounter, 4616 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 4435 mSolverCounterSat, 2197 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4666 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 6633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2197 IncrementalHoareTripleChecker+Valid, 4435 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-03-19 07:00:01,178 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [4666 Valid, 1836 Invalid, 6633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2197 Valid, 4435 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2022-03-19 07:00:01,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2022-03-19 07:00:01,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 3755. [2022-03-19 07:00:01,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 2956 states have (on average 1.4333558863328824) internal successors, (4237), 3023 states have internal predecessors, (4237), 500 states have call successors, (500), 258 states have call predecessors, (500), 298 states have return successors, (751), 491 states have call predecessors, (751), 484 states have call successors, (751) [2022-03-19 07:00:01,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5488 transitions. [2022-03-19 07:00:01,898 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5488 transitions. Word has length 57 [2022-03-19 07:00:01,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:00:01,898 INFO L478 AbstractCegarLoop]: Abstraction has 3755 states and 5488 transitions. [2022-03-19 07:00:01,898 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 07:00:01,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5488 transitions. [2022-03-19 07:00:01,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-19 07:00:01,899 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:00:01,899 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:00:01,899 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-19 07:00:01,899 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:00:01,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:00:01,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1470236357, now seen corresponding path program 1 times [2022-03-19 07:00:01,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:01,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [809996053] [2022-03-19 07:00:01,900 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:00:01,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1470236357, now seen corresponding path program 2 times [2022-03-19 07:00:01,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:00:01,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508201225] [2022-03-19 07:00:01,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:00:01,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:00:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:02,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:00:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:02,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:00:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:02,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:00:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:02,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:00:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:02,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:02,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 07:00:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:02,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 07:00:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:02,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:02,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:00:02,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:00:02,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508201225] [2022-03-19 07:00:02,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508201225] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:02,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:02,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:00:02,320 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:00:02,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [809996053] [2022-03-19 07:00:02,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [809996053] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:02,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:02,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:00:02,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842728149] [2022-03-19 07:00:02,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:00:02,320 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 07:00:02,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:02,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 07:00:02,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-19 07:00:02,321 INFO L87 Difference]: Start difference. First operand 3755 states and 5488 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 07:00:10,484 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:00:16,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:00:16,797 INFO L93 Difference]: Finished difference Result 4453 states and 6707 transitions. [2022-03-19 07:00:16,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-19 07:00:16,798 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 5 states have internal predecessors, (41), 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 59 [2022-03-19 07:00:16,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:00:16,820 INFO L225 Difference]: With dead ends: 4453 [2022-03-19 07:00:16,820 INFO L226 Difference]: Without dead ends: 4447 [2022-03-19 07:00:16,822 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2022-03-19 07:00:16,822 INFO L912 BasicCegarLoop]: 1031 mSDtfsCounter, 4046 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 4974 mSolverCounterSat, 1938 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4096 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 6913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1938 IncrementalHoareTripleChecker+Valid, 4974 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-03-19 07:00:16,822 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [4096 Valid, 1932 Invalid, 6913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1938 Valid, 4974 Invalid, 1 Unknown, 0 Unchecked, 11.6s Time] [2022-03-19 07:00:16,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4447 states. [2022-03-19 07:00:17,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4447 to 3755. [2022-03-19 07:00:17,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 2956 states have (on average 1.4330175913396481) internal successors, (4236), 3023 states have internal predecessors, (4236), 500 states have call successors, (500), 258 states have call predecessors, (500), 298 states have return successors, (751), 491 states have call predecessors, (751), 484 states have call successors, (751) [2022-03-19 07:00:17,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5487 transitions. [2022-03-19 07:00:17,512 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5487 transitions. Word has length 59 [2022-03-19 07:00:17,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:00:17,512 INFO L478 AbstractCegarLoop]: Abstraction has 3755 states and 5487 transitions. [2022-03-19 07:00:17,513 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 07:00:17,513 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5487 transitions. [2022-03-19 07:00:17,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-19 07:00:17,514 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:00:17,514 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:00:17,514 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-19 07:00:17,514 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:00:17,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:00:17,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1749808949, now seen corresponding path program 1 times [2022-03-19 07:00:17,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:17,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [90814606] [2022-03-19 07:00:17,515 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:00:17,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1749808949, now seen corresponding path program 2 times [2022-03-19 07:00:17,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:00:17,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414239913] [2022-03-19 07:00:17,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:00:17,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:00:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:17,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:00:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:17,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:00:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:17,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:00:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:17,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:00:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:17,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:17,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 07:00:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:17,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 07:00:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:18,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:18,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:00:18,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:00:18,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414239913] [2022-03-19 07:00:18,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414239913] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:18,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:18,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:00:18,047 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:00:18,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [90814606] [2022-03-19 07:00:18,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [90814606] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:18,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:18,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:00:18,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612422471] [2022-03-19 07:00:18,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:00:18,047 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 07:00:18,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:18,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 07:00:18,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-19 07:00:18,048 INFO L87 Difference]: Start difference. First operand 3755 states and 5487 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:00:27,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:00:31,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:00:31,309 INFO L93 Difference]: Finished difference Result 4464 states and 6725 transitions. [2022-03-19 07:00:31,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-19 07:00:31,310 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 60 [2022-03-19 07:00:31,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:00:31,360 INFO L225 Difference]: With dead ends: 4464 [2022-03-19 07:00:31,360 INFO L226 Difference]: Without dead ends: 4447 [2022-03-19 07:00:31,363 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-03-19 07:00:31,363 INFO L912 BasicCegarLoop]: 723 mSDtfsCounter, 1847 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 5204 mSolverCounterSat, 828 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 1906 SdHoareTripleChecker+Invalid, 6033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 828 IncrementalHoareTripleChecker+Valid, 5204 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-03-19 07:00:31,364 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1886 Valid, 1906 Invalid, 6033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [828 Valid, 5204 Invalid, 1 Unknown, 0 Unchecked, 11.7s Time] [2022-03-19 07:00:31,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4447 states. [2022-03-19 07:00:31,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4447 to 3753. [2022-03-19 07:00:32,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3753 states, 2955 states have (on average 1.4328257191201355) internal successors, (4234), 3022 states have internal predecessors, (4234), 499 states have call successors, (499), 258 states have call predecessors, (499), 298 states have return successors, (750), 490 states have call predecessors, (750), 483 states have call successors, (750) [2022-03-19 07:00:32,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3753 states to 3753 states and 5483 transitions. [2022-03-19 07:00:32,010 INFO L78 Accepts]: Start accepts. Automaton has 3753 states and 5483 transitions. Word has length 60 [2022-03-19 07:00:32,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:00:32,010 INFO L478 AbstractCegarLoop]: Abstraction has 3753 states and 5483 transitions. [2022-03-19 07:00:32,010 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:00:32,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3753 states and 5483 transitions. [2022-03-19 07:00:32,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-19 07:00:32,011 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:00:32,011 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:00:32,012 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-19 07:00:32,012 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:00:32,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:00:32,012 INFO L85 PathProgramCache]: Analyzing trace with hash -449310488, now seen corresponding path program 1 times [2022-03-19 07:00:32,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:32,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [810436456] [2022-03-19 07:00:32,013 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:00:32,013 INFO L85 PathProgramCache]: Analyzing trace with hash -449310488, now seen corresponding path program 2 times [2022-03-19 07:00:32,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:00:32,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795366718] [2022-03-19 07:00:32,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:00:32,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:00:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:32,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:00:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:32,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:00:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:32,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:00:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:32,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:00:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:32,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:32,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 07:00:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:32,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-19 07:00:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:32,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:32,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:00:32,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:00:32,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795366718] [2022-03-19 07:00:32,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795366718] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:32,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:32,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:00:32,562 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:00:32,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [810436456] [2022-03-19 07:00:32,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [810436456] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:32,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:32,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:00:32,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387996245] [2022-03-19 07:00:32,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:00:32,562 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 07:00:32,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:32,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 07:00:32,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-19 07:00:32,563 INFO L87 Difference]: Start difference. First operand 3753 states and 5483 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:00:41,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:00:44,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:00:44,390 INFO L93 Difference]: Finished difference Result 4462 states and 6721 transitions. [2022-03-19 07:00:44,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-19 07:00:44,391 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 59 [2022-03-19 07:00:44,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:00:44,401 INFO L225 Difference]: With dead ends: 4462 [2022-03-19 07:00:44,402 INFO L226 Difference]: Without dead ends: 4440 [2022-03-19 07:00:44,403 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-03-19 07:00:44,403 INFO L912 BasicCegarLoop]: 719 mSDtfsCounter, 1783 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 5325 mSolverCounterSat, 744 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1822 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 6070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 744 IncrementalHoareTripleChecker+Valid, 5325 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-03-19 07:00:44,404 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1822 Valid, 1847 Invalid, 6070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [744 Valid, 5325 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2022-03-19 07:00:44,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4440 states. [2022-03-19 07:00:45,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4440 to 3746. [2022-03-19 07:00:45,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3746 states, 2951 states have (on average 1.4330735343951202) internal successors, (4229), 3018 states have internal predecessors, (4229), 497 states have call successors, (497), 257 states have call predecessors, (497), 297 states have return successors, (748), 488 states have call predecessors, (748), 481 states have call successors, (748) [2022-03-19 07:00:45,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3746 states to 3746 states and 5474 transitions. [2022-03-19 07:00:45,126 INFO L78 Accepts]: Start accepts. Automaton has 3746 states and 5474 transitions. Word has length 59 [2022-03-19 07:00:45,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:00:45,127 INFO L478 AbstractCegarLoop]: Abstraction has 3746 states and 5474 transitions. [2022-03-19 07:00:45,127 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:00:45,127 INFO L276 IsEmpty]: Start isEmpty. Operand 3746 states and 5474 transitions. [2022-03-19 07:00:45,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-19 07:00:45,128 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:00:45,128 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:00:45,128 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-19 07:00:45,128 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:00:45,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:00:45,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1939971839, now seen corresponding path program 1 times [2022-03-19 07:00:45,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:45,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [652900795] [2022-03-19 07:00:45,129 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:00:45,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1939971839, now seen corresponding path program 2 times [2022-03-19 07:00:45,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:00:45,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73091499] [2022-03-19 07:00:45,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:00:45,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:00:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:45,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:00:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:45,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:00:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:45,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:00:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:45,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:00:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:45,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:45,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 07:00:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:45,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-19 07:00:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:45,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:45,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:00:45,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:00:45,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73091499] [2022-03-19 07:00:45,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73091499] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:45,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:45,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 07:00:45,579 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:00:45,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [652900795] [2022-03-19 07:00:45,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [652900795] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:45,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:45,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 07:00:45,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812337499] [2022-03-19 07:00:45,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:00:45,580 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 07:00:45,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:45,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 07:00:45,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-19 07:00:45,580 INFO L87 Difference]: Start difference. First operand 3746 states and 5474 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 07:00:51,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:00:58,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:00:58,540 INFO L93 Difference]: Finished difference Result 12172 states and 18769 transitions. [2022-03-19 07:00:58,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-19 07:00:58,541 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2022-03-19 07:00:58,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:00:58,566 INFO L225 Difference]: With dead ends: 12172 [2022-03-19 07:00:58,567 INFO L226 Difference]: Without dead ends: 8670 [2022-03-19 07:00:58,583 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-03-19 07:00:58,584 INFO L912 BasicCegarLoop]: 920 mSDtfsCounter, 4217 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 3263 mSolverCounterSat, 1889 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4276 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 5153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1889 IncrementalHoareTripleChecker+Valid, 3263 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-03-19 07:00:58,584 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [4276 Valid, 1771 Invalid, 5153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1889 Valid, 3263 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2022-03-19 07:00:58,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8670 states. [2022-03-19 07:00:59,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8670 to 7477. [2022-03-19 07:00:59,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7477 states, 5891 states have (on average 1.443388219317603) internal successors, (8503), 6073 states have internal predecessors, (8503), 1008 states have call successors, (1008), 475 states have call predecessors, (1008), 577 states have return successors, (1804), 964 states have call predecessors, (1804), 995 states have call successors, (1804) [2022-03-19 07:01:00,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7477 states to 7477 states and 11315 transitions. [2022-03-19 07:01:00,023 INFO L78 Accepts]: Start accepts. Automaton has 7477 states and 11315 transitions. Word has length 63 [2022-03-19 07:01:00,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:01:00,023 INFO L478 AbstractCegarLoop]: Abstraction has 7477 states and 11315 transitions. [2022-03-19 07:01:00,023 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (13), 10 states have call predecessors, (13), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 07:01:00,023 INFO L276 IsEmpty]: Start isEmpty. Operand 7477 states and 11315 transitions. [2022-03-19 07:01:00,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-19 07:01:00,026 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:01:00,026 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:01:00,026 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-19 07:01:00,026 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:01:00,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:01:00,027 INFO L85 PathProgramCache]: Analyzing trace with hash -858477288, now seen corresponding path program 1 times [2022-03-19 07:01:00,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:00,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1168107908] [2022-03-19 07:01:00,027 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:01:00,027 INFO L85 PathProgramCache]: Analyzing trace with hash -858477288, now seen corresponding path program 2 times [2022-03-19 07:01:00,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:01:00,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840647165] [2022-03-19 07:01:00,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:01:00,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:01:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:00,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:01:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:00,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:01:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:00,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:01:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:00,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:01:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:00,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:00,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 07:01:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:00,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-19 07:01:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:00,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:01:00,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:01:00,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840647165] [2022-03-19 07:01:00,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840647165] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:00,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:00,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 07:01:00,423 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:01:00,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1168107908] [2022-03-19 07:01:00,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1168107908] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:00,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:00,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 07:01:00,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518877900] [2022-03-19 07:01:00,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:01:00,424 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 07:01:00,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:00,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 07:01:00,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-19 07:01:00,424 INFO L87 Difference]: Start difference. First operand 7477 states and 11315 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 07:01:08,574 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:01:13,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:01:13,168 INFO L93 Difference]: Finished difference Result 15189 states and 23518 transitions. [2022-03-19 07:01:13,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-19 07:01:13,169 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 61 [2022-03-19 07:01:13,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:01:13,203 INFO L225 Difference]: With dead ends: 15189 [2022-03-19 07:01:13,204 INFO L226 Difference]: Without dead ends: 8787 [2022-03-19 07:01:13,224 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-03-19 07:01:13,225 INFO L912 BasicCegarLoop]: 709 mSDtfsCounter, 1515 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 3913 mSolverCounterSat, 647 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 4561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 3913 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-03-19 07:01:13,225 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1551 Valid, 1398 Invalid, 4561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 3913 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2022-03-19 07:01:13,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8787 states. [2022-03-19 07:01:14,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8787 to 7633. [2022-03-19 07:01:14,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7633 states, 6047 states have (on average 1.4359186373408301) internal successors, (8683), 6229 states have internal predecessors, (8683), 1008 states have call successors, (1008), 475 states have call predecessors, (1008), 577 states have return successors, (1804), 964 states have call predecessors, (1804), 995 states have call successors, (1804) [2022-03-19 07:01:14,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7633 states to 7633 states and 11495 transitions. [2022-03-19 07:01:14,750 INFO L78 Accepts]: Start accepts. Automaton has 7633 states and 11495 transitions. Word has length 61 [2022-03-19 07:01:14,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:01:14,750 INFO L478 AbstractCegarLoop]: Abstraction has 7633 states and 11495 transitions. [2022-03-19 07:01:14,750 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 07:01:14,750 INFO L276 IsEmpty]: Start isEmpty. Operand 7633 states and 11495 transitions. [2022-03-19 07:01:14,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-19 07:01:14,751 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:01:14,751 INFO L500 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] [2022-03-19 07:01:14,751 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-19 07:01:14,752 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:01:14,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:01:14,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1733980064, now seen corresponding path program 1 times [2022-03-19 07:01:14,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:14,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1588276497] [2022-03-19 07:01:14,753 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:01:14,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1733980064, now seen corresponding path program 2 times [2022-03-19 07:01:14,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:01:14,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548127733] [2022-03-19 07:01:14,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:01:14,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:01:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:15,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:01:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:15,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:01:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:15,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:01:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:15,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:01:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:15,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:15,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 07:01:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:15,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-19 07:01:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:15,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 07:01:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:15,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:01:15,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:01:15,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548127733] [2022-03-19 07:01:15,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548127733] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:15,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:15,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:01:15,394 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:01:15,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1588276497] [2022-03-19 07:01:15,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1588276497] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:15,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:15,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:01:15,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842446971] [2022-03-19 07:01:15,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:01:15,394 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 07:01:15,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:15,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 07:01:15,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-03-19 07:01:15,395 INFO L87 Difference]: Start difference. First operand 7633 states and 11495 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:01:23,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:01:28,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:01:28,648 INFO L93 Difference]: Finished difference Result 8715 states and 13445 transitions. [2022-03-19 07:01:28,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-19 07:01:28,649 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 64 [2022-03-19 07:01:28,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:01:28,692 INFO L225 Difference]: With dead ends: 8715 [2022-03-19 07:01:28,692 INFO L226 Difference]: Without dead ends: 8699 [2022-03-19 07:01:28,696 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2022-03-19 07:01:28,696 INFO L912 BasicCegarLoop]: 718 mSDtfsCounter, 1954 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 4557 mSolverCounterSat, 864 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 5422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 4557 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-03-19 07:01:28,696 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1992 Valid, 1733 Invalid, 5422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 4557 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2022-03-19 07:01:28,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8699 states. [2022-03-19 07:01:30,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8699 to 7639. [2022-03-19 07:01:30,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7639 states, 6050 states have (on average 1.4357024793388429) internal successors, (8686), 6235 states have internal predecessors, (8686), 1008 states have call successors, (1008), 475 states have call predecessors, (1008), 580 states have return successors, (1826), 964 states have call predecessors, (1826), 995 states have call successors, (1826) [2022-03-19 07:01:30,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7639 states to 7639 states and 11520 transitions. [2022-03-19 07:01:30,304 INFO L78 Accepts]: Start accepts. Automaton has 7639 states and 11520 transitions. Word has length 64 [2022-03-19 07:01:30,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:01:30,305 INFO L478 AbstractCegarLoop]: Abstraction has 7639 states and 11520 transitions. [2022-03-19 07:01:30,305 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:01:30,305 INFO L276 IsEmpty]: Start isEmpty. Operand 7639 states and 11520 transitions. [2022-03-19 07:01:30,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-19 07:01:30,306 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:01:30,307 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:01:30,307 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-19 07:01:30,307 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:01:30,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:01:30,307 INFO L85 PathProgramCache]: Analyzing trace with hash 326599203, now seen corresponding path program 1 times [2022-03-19 07:01:30,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:30,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [165460588] [2022-03-19 07:01:30,307 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:01:30,308 INFO L85 PathProgramCache]: Analyzing trace with hash 326599203, now seen corresponding path program 2 times [2022-03-19 07:01:30,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:01:30,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485180701] [2022-03-19 07:01:30,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:01:30,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:01:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:30,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:01:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:30,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:01:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:30,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:01:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:30,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:01:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:30,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:30,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 07:01:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:30,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-19 07:01:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:30,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 07:01:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:30,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:01:30,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:01:30,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485180701] [2022-03-19 07:01:30,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485180701] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:30,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:30,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:01:30,882 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:01:30,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [165460588] [2022-03-19 07:01:30,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [165460588] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:30,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:30,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:01:30,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604339547] [2022-03-19 07:01:30,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:01:30,882 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 07:01:30,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:30,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 07:01:30,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-03-19 07:01:30,883 INFO L87 Difference]: Start difference. First operand 7639 states and 11520 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:01:35,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:01:39,984 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:01:45,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:01:45,143 INFO L93 Difference]: Finished difference Result 8707 states and 13419 transitions. [2022-03-19 07:01:45,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 07:01:45,143 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 65 [2022-03-19 07:01:45,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:01:45,167 INFO L225 Difference]: With dead ends: 8707 [2022-03-19 07:01:45,167 INFO L226 Difference]: Without dead ends: 8687 [2022-03-19 07:01:45,172 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-03-19 07:01:45,173 INFO L912 BasicCegarLoop]: 727 mSDtfsCounter, 2003 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 4566 mSolverCounterSat, 876 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2041 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 5443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 4566 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-03-19 07:01:45,173 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2041 Valid, 1790 Invalid, 5443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [876 Valid, 4566 Invalid, 1 Unknown, 0 Unchecked, 11.4s Time] [2022-03-19 07:01:45,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8687 states. [2022-03-19 07:01:46,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8687 to 7637. [2022-03-19 07:01:46,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7637 states, 6049 states have (on average 1.4356091916019176) internal successors, (8684), 6234 states have internal predecessors, (8684), 1007 states have call successors, (1007), 475 states have call predecessors, (1007), 580 states have return successors, (1825), 963 states have call predecessors, (1825), 994 states have call successors, (1825) [2022-03-19 07:01:46,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 11516 transitions. [2022-03-19 07:01:46,840 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 11516 transitions. Word has length 65 [2022-03-19 07:01:46,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:01:46,841 INFO L478 AbstractCegarLoop]: Abstraction has 7637 states and 11516 transitions. [2022-03-19 07:01:46,842 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:01:46,842 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 11516 transitions. [2022-03-19 07:01:46,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-19 07:01:46,860 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:01:46,861 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:01:46,861 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-19 07:01:46,862 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:01:46,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:01:46,862 INFO L85 PathProgramCache]: Analyzing trace with hash -455424616, now seen corresponding path program 1 times [2022-03-19 07:01:46,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:46,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1651800052] [2022-03-19 07:01:46,864 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:01:46,864 INFO L85 PathProgramCache]: Analyzing trace with hash -455424616, now seen corresponding path program 2 times [2022-03-19 07:01:46,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:01:46,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653375149] [2022-03-19 07:01:46,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:01:46,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:01:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:47,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:01:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:47,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:01:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:47,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:01:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:47,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:01:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:47,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:47,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 07:01:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:47,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-19 07:01:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:47,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 07:01:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:47,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:01:47,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:01:47,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653375149] [2022-03-19 07:01:47,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653375149] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:47,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:47,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:01:47,494 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:01:47,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1651800052] [2022-03-19 07:01:47,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1651800052] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:01:47,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:01:47,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:01:47,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194965771] [2022-03-19 07:01:47,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:01:47,494 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 07:01:47,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:47,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 07:01:47,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-03-19 07:01:47,495 INFO L87 Difference]: Start difference. First operand 7637 states and 11516 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 07:01:55,364 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:02:00,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:02:00,173 INFO L93 Difference]: Finished difference Result 16296 states and 24880 transitions. [2022-03-19 07:02:00,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 07:02:00,174 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2022-03-19 07:02:00,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:02:00,199 INFO L225 Difference]: With dead ends: 16296 [2022-03-19 07:02:00,199 INFO L226 Difference]: Without dead ends: 8687 [2022-03-19 07:02:00,225 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2022-03-19 07:02:00,225 INFO L912 BasicCegarLoop]: 712 mSDtfsCounter, 1816 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 4957 mSolverCounterSat, 819 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 5777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 819 IncrementalHoareTripleChecker+Valid, 4957 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-03-19 07:02:00,225 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1853 Valid, 1824 Invalid, 5777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [819 Valid, 4957 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2022-03-19 07:02:00,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8687 states. [2022-03-19 07:02:01,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8687 to 7637. [2022-03-19 07:02:01,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7637 states, 6049 states have (on average 1.4354438750206646) internal successors, (8683), 6234 states have internal predecessors, (8683), 1007 states have call successors, (1007), 475 states have call predecessors, (1007), 580 states have return successors, (1825), 963 states have call predecessors, (1825), 994 states have call successors, (1825) [2022-03-19 07:02:01,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 11515 transitions. [2022-03-19 07:02:02,001 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 11515 transitions. Word has length 67 [2022-03-19 07:02:02,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:02:02,002 INFO L478 AbstractCegarLoop]: Abstraction has 7637 states and 11515 transitions. [2022-03-19 07:02:02,002 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 07:02:02,002 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 11515 transitions. [2022-03-19 07:02:02,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-19 07:02:02,003 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:02:02,003 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:02:02,003 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-19 07:02:02,003 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:02:02,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:02:02,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2112328753, now seen corresponding path program 1 times [2022-03-19 07:02:02,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:02,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [929331273] [2022-03-19 07:02:02,004 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:02:02,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2112328753, now seen corresponding path program 2 times [2022-03-19 07:02:02,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:02:02,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634284869] [2022-03-19 07:02:02,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:02:02,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:02:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:02,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:02:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:02,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:02:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:02,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:02:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:02,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:02:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:02,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:02,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:02:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:02,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-19 07:02:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:02,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 07:02:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:02,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:02:02,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:02:02,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634284869] [2022-03-19 07:02:02,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634284869] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:02,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:02,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:02:02,503 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:02:02,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [929331273] [2022-03-19 07:02:02,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [929331273] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:02,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:02,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:02:02,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929522955] [2022-03-19 07:02:02,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:02:02,504 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 07:02:02,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:02,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 07:02:02,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-03-19 07:02:02,504 INFO L87 Difference]: Start difference. First operand 7637 states and 11515 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:02:10,268 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:02:15,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:02:15,120 INFO L93 Difference]: Finished difference Result 8702 states and 13411 transitions. [2022-03-19 07:02:15,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 07:02:15,120 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 71 [2022-03-19 07:02:15,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:02:15,140 INFO L225 Difference]: With dead ends: 8702 [2022-03-19 07:02:15,140 INFO L226 Difference]: Without dead ends: 8682 [2022-03-19 07:02:15,142 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-03-19 07:02:15,143 INFO L912 BasicCegarLoop]: 723 mSDtfsCounter, 2280 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 4232 mSolverCounterSat, 1051 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2318 SdHoareTripleChecker+Valid, 1879 SdHoareTripleChecker+Invalid, 5284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1051 IncrementalHoareTripleChecker+Valid, 4232 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-03-19 07:02:15,143 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2318 Valid, 1879 Invalid, 5284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1051 Valid, 4232 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2022-03-19 07:02:15,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8682 states. [2022-03-19 07:02:16,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8682 to 7632. [2022-03-19 07:02:16,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7632 states, 6046 states have (on average 1.4354945418458485) internal successors, (8679), 6231 states have internal predecessors, (8679), 1006 states have call successors, (1006), 475 states have call predecessors, (1006), 579 states have return successors, (1823), 961 states have call predecessors, (1823), 993 states have call successors, (1823) [2022-03-19 07:02:16,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7632 states to 7632 states and 11508 transitions. [2022-03-19 07:02:16,973 INFO L78 Accepts]: Start accepts. Automaton has 7632 states and 11508 transitions. Word has length 71 [2022-03-19 07:02:16,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:02:16,974 INFO L478 AbstractCegarLoop]: Abstraction has 7632 states and 11508 transitions. [2022-03-19 07:02:16,974 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:02:16,974 INFO L276 IsEmpty]: Start isEmpty. Operand 7632 states and 11508 transitions. [2022-03-19 07:02:16,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-19 07:02:16,975 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:02:16,975 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:02:16,975 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-19 07:02:16,975 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:02:16,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:02:16,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1256030660, now seen corresponding path program 1 times [2022-03-19 07:02:16,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:16,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [558751196] [2022-03-19 07:02:16,976 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:02:16,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1256030660, now seen corresponding path program 2 times [2022-03-19 07:02:16,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:02:16,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464065535] [2022-03-19 07:02:16,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:02:16,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:02:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:17,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:02:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:17,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:02:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:17,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:02:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:17,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:02:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:17,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:17,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:02:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:17,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 07:02:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:17,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-19 07:02:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:17,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:02:17,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:02:17,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464065535] [2022-03-19 07:02:17,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464065535] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:17,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:17,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 07:02:17,569 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:02:17,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [558751196] [2022-03-19 07:02:17,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [558751196] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:17,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:17,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 07:02:17,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579302778] [2022-03-19 07:02:17,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:02:17,569 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 07:02:17,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:17,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 07:02:17,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-03-19 07:02:17,570 INFO L87 Difference]: Start difference. First operand 7632 states and 11508 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 07:02:23,689 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:02:25,844 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:02:32,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:02:44,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:02:44,961 INFO L93 Difference]: Finished difference Result 14564 states and 22493 transitions. [2022-03-19 07:02:44,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-19 07:02:44,961 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 72 [2022-03-19 07:02:44,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:02:44,990 INFO L225 Difference]: With dead ends: 14564 [2022-03-19 07:02:44,990 INFO L226 Difference]: Without dead ends: 10286 [2022-03-19 07:02:45,006 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=566, Invalid=2404, Unknown=0, NotChecked=0, Total=2970 [2022-03-19 07:02:45,006 INFO L912 BasicCegarLoop]: 1101 mSDtfsCounter, 3789 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 8042 mSolverCounterSat, 2037 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3797 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 10082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2037 IncrementalHoareTripleChecker+Valid, 8042 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2022-03-19 07:02:45,007 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3797 Valid, 2404 Invalid, 10082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2037 Valid, 8042 Invalid, 3 Unknown, 0 Unchecked, 22.1s Time] [2022-03-19 07:02:45,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10286 states. [2022-03-19 07:02:46,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10286 to 8242. [2022-03-19 07:02:46,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8242 states, 6535 states have (on average 1.434583014537108) internal successors, (9375), 6726 states have internal predecessors, (9375), 1073 states have call successors, (1073), 517 states have call predecessors, (1073), 633 states have return successors, (1965), 1033 states have call predecessors, (1965), 1059 states have call successors, (1965) [2022-03-19 07:02:46,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8242 states to 8242 states and 12413 transitions. [2022-03-19 07:02:46,987 INFO L78 Accepts]: Start accepts. Automaton has 8242 states and 12413 transitions. Word has length 72 [2022-03-19 07:02:46,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:02:46,988 INFO L478 AbstractCegarLoop]: Abstraction has 8242 states and 12413 transitions. [2022-03-19 07:02:46,989 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 07:02:46,989 INFO L276 IsEmpty]: Start isEmpty. Operand 8242 states and 12413 transitions. [2022-03-19 07:02:46,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-19 07:02:46,990 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:02:46,990 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:02:46,990 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-19 07:02:46,990 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:02:46,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:02:46,991 INFO L85 PathProgramCache]: Analyzing trace with hash -26354390, now seen corresponding path program 1 times [2022-03-19 07:02:46,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:46,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1043777885] [2022-03-19 07:02:46,991 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:02:46,991 INFO L85 PathProgramCache]: Analyzing trace with hash -26354390, now seen corresponding path program 2 times [2022-03-19 07:02:46,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:02:46,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911841121] [2022-03-19 07:02:46,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:02:46,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:02:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:47,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:02:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:47,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:02:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:47,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:02:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:47,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:02:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:47,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:02:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:47,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:02:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:47,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 07:02:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:47,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:02:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:02:47,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:02:47,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:02:47,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911841121] [2022-03-19 07:02:47,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911841121] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:47,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:47,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:02:47,606 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:02:47,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1043777885] [2022-03-19 07:02:47,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1043777885] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:02:47,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:02:47,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:02:47,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694723025] [2022-03-19 07:02:47,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:02:47,607 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 07:02:47,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:02:47,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 07:02:47,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-19 07:02:47,607 INFO L87 Difference]: Start difference. First operand 8242 states and 12413 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:02:57,717 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:03:03,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:03:03,679 INFO L93 Difference]: Finished difference Result 16692 states and 25780 transitions. [2022-03-19 07:03:03,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 07:03:03,679 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 73 [2022-03-19 07:03:03,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:03:03,727 INFO L225 Difference]: With dead ends: 16692 [2022-03-19 07:03:03,727 INFO L226 Difference]: Without dead ends: 9642 [2022-03-19 07:03:03,743 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-03-19 07:03:03,743 INFO L912 BasicCegarLoop]: 681 mSDtfsCounter, 1764 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 5316 mSolverCounterSat, 791 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1799 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 6108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 791 IncrementalHoareTripleChecker+Valid, 5316 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-03-19 07:03:03,743 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1799 Valid, 1760 Invalid, 6108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [791 Valid, 5316 Invalid, 1 Unknown, 0 Unchecked, 12.1s Time] [2022-03-19 07:03:03,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9642 states. [2022-03-19 07:03:05,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9642 to 8322. [2022-03-19 07:03:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8322 states, 6593 states have (on average 1.4307598968603064) internal successors, (9433), 6794 states have internal predecessors, (9433), 1073 states have call successors, (1073), 517 states have call predecessors, (1073), 655 states have return successors, (2032), 1045 states have call predecessors, (2032), 1059 states have call successors, (2032) [2022-03-19 07:03:05,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8322 states to 8322 states and 12538 transitions. [2022-03-19 07:03:05,725 INFO L78 Accepts]: Start accepts. Automaton has 8322 states and 12538 transitions. Word has length 73 [2022-03-19 07:03:05,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:03:05,725 INFO L478 AbstractCegarLoop]: Abstraction has 8322 states and 12538 transitions. [2022-03-19 07:03:05,725 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:03:05,726 INFO L276 IsEmpty]: Start isEmpty. Operand 8322 states and 12538 transitions. [2022-03-19 07:03:05,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-19 07:03:05,727 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:03:05,727 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:03:05,727 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-19 07:03:05,727 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:03:05,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:03:05,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1359799553, now seen corresponding path program 1 times [2022-03-19 07:03:05,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:03:05,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1437409275] [2022-03-19 07:03:05,728 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:03:05,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1359799553, now seen corresponding path program 2 times [2022-03-19 07:03:05,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:03:05,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473446200] [2022-03-19 07:03:05,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:03:05,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:03:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:05,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:03:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:03:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:03:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:03:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:03:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:03:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 07:03:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-19 07:03:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:06,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:03:06,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:03:06,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473446200] [2022-03-19 07:03:06,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473446200] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:03:06,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:03:06,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 07:03:06,271 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:03:06,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1437409275] [2022-03-19 07:03:06,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1437409275] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:03:06,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:03:06,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 07:03:06,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649869339] [2022-03-19 07:03:06,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:03:06,271 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 07:03:06,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:03:06,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 07:03:06,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-19 07:03:06,272 INFO L87 Difference]: Start difference. First operand 8322 states and 12538 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 07:03:13,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:03:19,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:03:19,400 INFO L93 Difference]: Finished difference Result 17616 states and 27205 transitions. [2022-03-19 07:03:19,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-19 07:03:19,401 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2022-03-19 07:03:19,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:03:19,429 INFO L225 Difference]: With dead ends: 17616 [2022-03-19 07:03:19,429 INFO L226 Difference]: Without dead ends: 9548 [2022-03-19 07:03:19,468 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=222, Invalid=590, Unknown=0, NotChecked=0, Total=812 [2022-03-19 07:03:19,470 INFO L912 BasicCegarLoop]: 658 mSDtfsCounter, 2654 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 3057 mSolverCounterSat, 1134 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2704 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 4192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1134 IncrementalHoareTripleChecker+Valid, 3057 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-03-19 07:03:19,470 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2704 Valid, 1301 Invalid, 4192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1134 Valid, 3057 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2022-03-19 07:03:19,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9548 states. [2022-03-19 07:03:21,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9548 to 8341. [2022-03-19 07:03:21,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8341 states, 6612 states have (on average 1.4310344827586208) internal successors, (9462), 6813 states have internal predecessors, (9462), 1073 states have call successors, (1073), 517 states have call predecessors, (1073), 655 states have return successors, (2032), 1045 states have call predecessors, (2032), 1059 states have call successors, (2032) [2022-03-19 07:03:21,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8341 states to 8341 states and 12567 transitions. [2022-03-19 07:03:21,687 INFO L78 Accepts]: Start accepts. Automaton has 8341 states and 12567 transitions. Word has length 74 [2022-03-19 07:03:21,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:03:21,687 INFO L478 AbstractCegarLoop]: Abstraction has 8341 states and 12567 transitions. [2022-03-19 07:03:21,687 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 07:03:21,687 INFO L276 IsEmpty]: Start isEmpty. Operand 8341 states and 12567 transitions. [2022-03-19 07:03:21,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-19 07:03:21,688 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:03:21,688 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:03:21,689 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-19 07:03:21,689 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:03:21,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:03:21,689 INFO L85 PathProgramCache]: Analyzing trace with hash 941023037, now seen corresponding path program 1 times [2022-03-19 07:03:21,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:03:21,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1141027465] [2022-03-19 07:03:21,689 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:03:21,689 INFO L85 PathProgramCache]: Analyzing trace with hash 941023037, now seen corresponding path program 2 times [2022-03-19 07:03:21,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:03:21,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145600306] [2022-03-19 07:03:21,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:03:21,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:03:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:21,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:03:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:21,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:03:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:21,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:03:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:21,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:03:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:22,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:03:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:22,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:03:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:22,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 07:03:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:22,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-19 07:03:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:22,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:03:22,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:03:22,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145600306] [2022-03-19 07:03:22,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145600306] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:03:22,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:03:22,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 07:03:22,169 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:03:22,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1141027465] [2022-03-19 07:03:22,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1141027465] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:03:22,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:03:22,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 07:03:22,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203024523] [2022-03-19 07:03:22,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:03:22,169 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 07:03:22,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:03:22,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 07:03:22,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-03-19 07:03:22,170 INFO L87 Difference]: Start difference. First operand 8341 states and 12567 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 07:03:32,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:03:38,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:03:38,904 INFO L93 Difference]: Finished difference Result 13651 states and 20845 transitions. [2022-03-19 07:03:38,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-19 07:03:38,905 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2022-03-19 07:03:38,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:03:38,933 INFO L225 Difference]: With dead ends: 13651 [2022-03-19 07:03:38,934 INFO L226 Difference]: Without dead ends: 9322 [2022-03-19 07:03:38,951 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=374, Invalid=1432, Unknown=0, NotChecked=0, Total=1806 [2022-03-19 07:03:38,953 INFO L912 BasicCegarLoop]: 671 mSDtfsCounter, 2725 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 5177 mSolverCounterSat, 1124 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2756 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 6302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1124 IncrementalHoareTripleChecker+Valid, 5177 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-03-19 07:03:38,953 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2756 Valid, 1553 Invalid, 6302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1124 Valid, 5177 Invalid, 1 Unknown, 0 Unchecked, 11.7s Time] [2022-03-19 07:03:38,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9322 states. [2022-03-19 07:03:41,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9322 to 7543. [2022-03-19 07:03:41,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7543 states, 5980 states have (on average 1.4295986622073578) internal successors, (8549), 6169 states have internal predecessors, (8549), 970 states have call successors, (970), 471 states have call predecessors, (970), 592 states have return successors, (1659), 937 states have call predecessors, (1659), 956 states have call successors, (1659) [2022-03-19 07:03:41,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7543 states to 7543 states and 11178 transitions. [2022-03-19 07:03:41,064 INFO L78 Accepts]: Start accepts. Automaton has 7543 states and 11178 transitions. Word has length 74 [2022-03-19 07:03:41,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:03:41,064 INFO L478 AbstractCegarLoop]: Abstraction has 7543 states and 11178 transitions. [2022-03-19 07:03:41,064 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 07:03:41,064 INFO L276 IsEmpty]: Start isEmpty. Operand 7543 states and 11178 transitions. [2022-03-19 07:03:41,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-19 07:03:41,066 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:03:41,066 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:03:41,066 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-19 07:03:41,066 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:03:41,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:03:41,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1087715839, now seen corresponding path program 1 times [2022-03-19 07:03:41,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:03:41,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1559521432] [2022-03-19 07:03:41,066 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:03:41,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1087715839, now seen corresponding path program 2 times [2022-03-19 07:03:41,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:03:41,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176861294] [2022-03-19 07:03:41,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:03:41,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:03:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:41,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:03:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:41,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:03:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:41,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:03:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:41,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:03:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:41,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:03:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:41,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:03:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:41,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 07:03:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:41,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-19 07:03:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:03:41,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:03:41,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:03:41,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176861294] [2022-03-19 07:03:41,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176861294] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:03:41,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:03:41,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:03:41,621 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:03:41,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1559521432] [2022-03-19 07:03:41,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1559521432] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:03:41,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:03:41,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:03:41,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027913165] [2022-03-19 07:03:41,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:03:41,621 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 07:03:41,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:03:41,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 07:03:41,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-19 07:03:41,621 INFO L87 Difference]: Start difference. First operand 7543 states and 11178 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:03:49,657 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:03:54,146 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:04:01,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:04:01,383 INFO L93 Difference]: Finished difference Result 11702 states and 17816 transitions. [2022-03-19 07:04:01,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-19 07:04:01,385 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 74 [2022-03-19 07:04:01,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:04:01,411 INFO L225 Difference]: With dead ends: 11702 [2022-03-19 07:04:01,412 INFO L226 Difference]: Without dead ends: 11689 [2022-03-19 07:04:01,415 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=231, Invalid=639, Unknown=0, NotChecked=0, Total=870 [2022-03-19 07:04:01,415 INFO L912 BasicCegarLoop]: 1151 mSDtfsCounter, 2428 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 5149 mSolverCounterSat, 1105 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2475 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 6255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1105 IncrementalHoareTripleChecker+Valid, 5149 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2022-03-19 07:04:01,415 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2475 Valid, 1983 Invalid, 6255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1105 Valid, 5149 Invalid, 1 Unknown, 0 Unchecked, 14.5s Time] [2022-03-19 07:04:01,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11689 states. [2022-03-19 07:04:03,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11689 to 8174. [2022-03-19 07:04:03,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8174 states, 6492 states have (on average 1.4322242760320394) internal successors, (9298), 6682 states have internal predecessors, (9298), 1039 states have call successors, (1039), 512 states have call predecessors, (1039), 642 states have return successors, (1773), 1015 states have call predecessors, (1773), 1025 states have call successors, (1773) [2022-03-19 07:04:03,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8174 states to 8174 states and 12110 transitions. [2022-03-19 07:04:03,836 INFO L78 Accepts]: Start accepts. Automaton has 8174 states and 12110 transitions. Word has length 74 [2022-03-19 07:04:03,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:04:03,836 INFO L478 AbstractCegarLoop]: Abstraction has 8174 states and 12110 transitions. [2022-03-19 07:04:03,836 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:04:03,837 INFO L276 IsEmpty]: Start isEmpty. Operand 8174 states and 12110 transitions. [2022-03-19 07:04:03,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-19 07:04:03,838 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:04:03,838 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:04:03,838 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-19 07:04:03,838 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:04:03,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:04:03,838 INFO L85 PathProgramCache]: Analyzing trace with hash -189949733, now seen corresponding path program 1 times [2022-03-19 07:04:03,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:04:03,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1262518634] [2022-03-19 07:04:03,838 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:04:03,839 INFO L85 PathProgramCache]: Analyzing trace with hash -189949733, now seen corresponding path program 2 times [2022-03-19 07:04:03,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:04:03,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086187197] [2022-03-19 07:04:03,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:04:03,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:04:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:04,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:04:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:04,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:04:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:04,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:04:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:04,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:04:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:04,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:04:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:04,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:04:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:04,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 07:04:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:04,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-19 07:04:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:04,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:04:04,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:04:04,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086187197] [2022-03-19 07:04:04,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086187197] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:04:04,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:04:04,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:04:04,501 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:04:04,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1262518634] [2022-03-19 07:04:04,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1262518634] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:04:04,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:04:04,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:04:04,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41889527] [2022-03-19 07:04:04,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:04:04,501 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 07:04:04,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:04:04,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 07:04:04,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-03-19 07:04:04,502 INFO L87 Difference]: Start difference. First operand 8174 states and 12110 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 07:04:14,867 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:04:25,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:04:25,715 INFO L93 Difference]: Finished difference Result 10307 states and 15642 transitions. [2022-03-19 07:04:25,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-19 07:04:25,716 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-03-19 07:04:25,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:04:25,743 INFO L225 Difference]: With dead ends: 10307 [2022-03-19 07:04:25,743 INFO L226 Difference]: Without dead ends: 10303 [2022-03-19 07:04:25,748 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=542, Invalid=1810, Unknown=0, NotChecked=0, Total=2352 [2022-03-19 07:04:25,749 INFO L912 BasicCegarLoop]: 1097 mSDtfsCounter, 4132 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 5213 mSolverCounterSat, 1988 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4172 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 7202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1988 IncrementalHoareTripleChecker+Valid, 5213 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-03-19 07:04:25,749 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [4172 Valid, 2094 Invalid, 7202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1988 Valid, 5213 Invalid, 1 Unknown, 0 Unchecked, 14.4s Time] [2022-03-19 07:04:25,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10303 states. [2022-03-19 07:04:28,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10303 to 8176. [2022-03-19 07:04:28,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8176 states, 6494 states have (on average 1.4320911610717586) internal successors, (9300), 6684 states have internal predecessors, (9300), 1039 states have call successors, (1039), 512 states have call predecessors, (1039), 642 states have return successors, (1773), 1015 states have call predecessors, (1773), 1025 states have call successors, (1773) [2022-03-19 07:04:28,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8176 states to 8176 states and 12112 transitions. [2022-03-19 07:04:28,232 INFO L78 Accepts]: Start accepts. Automaton has 8176 states and 12112 transitions. Word has length 75 [2022-03-19 07:04:28,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:04:28,232 INFO L478 AbstractCegarLoop]: Abstraction has 8176 states and 12112 transitions. [2022-03-19 07:04:28,233 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 07:04:28,233 INFO L276 IsEmpty]: Start isEmpty. Operand 8176 states and 12112 transitions. [2022-03-19 07:04:28,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-19 07:04:28,234 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:04:28,234 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:04:28,234 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-19 07:04:28,234 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:04:28,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:04:28,234 INFO L85 PathProgramCache]: Analyzing trace with hash -189672903, now seen corresponding path program 1 times [2022-03-19 07:04:28,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:04:28,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [200043367] [2022-03-19 07:04:28,235 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:04:28,235 INFO L85 PathProgramCache]: Analyzing trace with hash -189672903, now seen corresponding path program 2 times [2022-03-19 07:04:28,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:04:28,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253644014] [2022-03-19 07:04:28,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:04:28,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:04:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:28,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:04:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:28,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:04:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:28,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:04:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:28,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:04:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:28,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:04:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:28,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:04:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:28,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 07:04:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:28,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-19 07:04:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:04:28,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:04:28,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253644014] [2022-03-19 07:04:28,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253644014] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:04:28,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:04:28,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-19 07:04:28,709 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:04:28,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [200043367] [2022-03-19 07:04:28,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [200043367] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:04:28,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:04:28,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-19 07:04:28,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733865646] [2022-03-19 07:04:28,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:04:28,710 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-19 07:04:28,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:04:28,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-19 07:04:28,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-03-19 07:04:28,710 INFO L87 Difference]: Start difference. First operand 8176 states and 12112 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:04:40,211 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:04:47,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:04:47,321 INFO L93 Difference]: Finished difference Result 9304 states and 14131 transitions. [2022-03-19 07:04:47,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-19 07:04:47,322 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 75 [2022-03-19 07:04:47,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:04:47,340 INFO L225 Difference]: With dead ends: 9304 [2022-03-19 07:04:47,341 INFO L226 Difference]: Without dead ends: 9290 [2022-03-19 07:04:47,343 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2022-03-19 07:04:47,343 INFO L912 BasicCegarLoop]: 704 mSDtfsCounter, 1773 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 7214 mSolverCounterSat, 759 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 7974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 759 IncrementalHoareTripleChecker+Valid, 7214 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-03-19 07:04:47,343 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1812 Valid, 2289 Invalid, 7974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [759 Valid, 7214 Invalid, 1 Unknown, 0 Unchecked, 14.1s Time] [2022-03-19 07:04:47,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9290 states. [2022-03-19 07:04:49,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9290 to 8178. [2022-03-19 07:04:49,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8178 states, 6495 states have (on average 1.4320246343341032) internal successors, (9301), 6686 states have internal predecessors, (9301), 1039 states have call successors, (1039), 512 states have call predecessors, (1039), 643 states have return successors, (1789), 1015 states have call predecessors, (1789), 1025 states have call successors, (1789) [2022-03-19 07:04:49,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8178 states to 8178 states and 12129 transitions. [2022-03-19 07:04:49,829 INFO L78 Accepts]: Start accepts. Automaton has 8178 states and 12129 transitions. Word has length 75 [2022-03-19 07:04:49,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:04:49,829 INFO L478 AbstractCegarLoop]: Abstraction has 8178 states and 12129 transitions. [2022-03-19 07:04:49,830 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:04:49,830 INFO L276 IsEmpty]: Start isEmpty. Operand 8178 states and 12129 transitions. [2022-03-19 07:04:49,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-19 07:04:49,831 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:04:49,831 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:04:49,831 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-19 07:04:49,831 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:04:49,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:04:49,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1279361975, now seen corresponding path program 1 times [2022-03-19 07:04:49,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:04:49,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1937758134] [2022-03-19 07:04:49,832 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:04:49,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1279361975, now seen corresponding path program 2 times [2022-03-19 07:04:49,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:04:49,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138262260] [2022-03-19 07:04:49,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:04:49,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:04:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:50,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:04:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:50,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:04:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:50,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:04:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:50,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:04:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:50,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:04:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:50,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:04:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:50,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-19 07:04:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:50,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 07:04:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:04:50,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:04:50,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:04:50,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138262260] [2022-03-19 07:04:50,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138262260] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:04:50,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:04:50,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-19 07:04:50,313 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:04:50,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1937758134] [2022-03-19 07:04:50,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1937758134] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:04:50,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:04:50,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-19 07:04:50,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415519865] [2022-03-19 07:04:50,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:04:50,314 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-19 07:04:50,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:04:50,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-19 07:04:50,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-03-19 07:04:50,314 INFO L87 Difference]: Start difference. First operand 8178 states and 12129 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:04:58,128 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:04:59,960 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:05:02,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:05:04,186 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:05:10,843 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:05:18,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:05:18,331 INFO L93 Difference]: Finished difference Result 9297 states and 14075 transitions. [2022-03-19 07:05:18,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-19 07:05:18,331 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 75 [2022-03-19 07:05:18,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:05:18,356 INFO L225 Difference]: With dead ends: 9297 [2022-03-19 07:05:18,357 INFO L226 Difference]: Without dead ends: 9244 [2022-03-19 07:05:18,362 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2022-03-19 07:05:18,362 INFO L912 BasicCegarLoop]: 700 mSDtfsCounter, 1530 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 7717 mSolverCounterSat, 622 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 2247 SdHoareTripleChecker+Invalid, 8342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 7717 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time [2022-03-19 07:05:18,362 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1569 Valid, 2247 Invalid, 8342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 7717 Invalid, 3 Unknown, 0 Unchecked, 23.5s Time] [2022-03-19 07:05:18,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9244 states. [2022-03-19 07:05:20,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9244 to 8141. [2022-03-19 07:05:20,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8141 states, 6463 states have (on average 1.4324617050905153) internal successors, (9258), 6654 states have internal predecessors, (9258), 1036 states have call successors, (1036), 510 states have call predecessors, (1036), 641 states have return successors, (1785), 1012 states have call predecessors, (1785), 1022 states have call successors, (1785) [2022-03-19 07:05:20,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8141 states to 8141 states and 12079 transitions. [2022-03-19 07:05:20,875 INFO L78 Accepts]: Start accepts. Automaton has 8141 states and 12079 transitions. Word has length 75 [2022-03-19 07:05:20,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:05:20,875 INFO L478 AbstractCegarLoop]: Abstraction has 8141 states and 12079 transitions. [2022-03-19 07:05:20,875 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:05:20,875 INFO L276 IsEmpty]: Start isEmpty. Operand 8141 states and 12079 transitions. [2022-03-19 07:05:20,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-19 07:05:20,876 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:05:20,876 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:05:20,876 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-19 07:05:20,876 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:05:20,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:05:20,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1573546191, now seen corresponding path program 1 times [2022-03-19 07:05:20,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:05:20,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [470425952] [2022-03-19 07:05:20,877 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:05:20,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1573546191, now seen corresponding path program 2 times [2022-03-19 07:05:20,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:05:20,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670874203] [2022-03-19 07:05:20,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:05:20,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:05:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:21,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:05:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:21,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:05:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:21,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:05:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:21,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:05:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:21,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:05:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:21,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:05:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:21,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 07:05:21,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:21,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 07:05:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:21,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 07:05:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:21,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:05:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:21,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:05:21,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:05:21,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670874203] [2022-03-19 07:05:21,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670874203] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:05:21,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:05:21,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:05:21,510 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:05:21,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [470425952] [2022-03-19 07:05:21,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [470425952] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:05:21,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:05:21,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:05:21,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821299173] [2022-03-19 07:05:21,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:05:21,510 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 07:05:21,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:05:21,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 07:05:21,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-03-19 07:05:21,511 INFO L87 Difference]: Start difference. First operand 8141 states and 12079 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-03-19 07:05:29,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:05:38,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:05:38,218 INFO L93 Difference]: Finished difference Result 13028 states and 19595 transitions. [2022-03-19 07:05:38,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-19 07:05:38,219 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 78 [2022-03-19 07:05:38,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:05:38,240 INFO L225 Difference]: With dead ends: 13028 [2022-03-19 07:05:38,241 INFO L226 Difference]: Without dead ends: 9114 [2022-03-19 07:05:38,253 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=180, Invalid=522, Unknown=0, NotChecked=0, Total=702 [2022-03-19 07:05:38,254 INFO L912 BasicCegarLoop]: 1111 mSDtfsCounter, 2628 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 3979 mSolverCounterSat, 1241 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2681 SdHoareTripleChecker+Valid, 1906 SdHoareTripleChecker+Invalid, 5221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1241 IncrementalHoareTripleChecker+Valid, 3979 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-03-19 07:05:38,254 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2681 Valid, 1906 Invalid, 5221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1241 Valid, 3979 Invalid, 1 Unknown, 0 Unchecked, 11.7s Time] [2022-03-19 07:05:38,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9114 states. [2022-03-19 07:05:40,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9114 to 7494. [2022-03-19 07:05:40,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7494 states, 5938 states have (on average 1.4292691141798586) internal successors, (8487), 6124 states have internal predecessors, (8487), 963 states have call successors, (963), 469 states have call predecessors, (963), 592 states have return successors, (1562), 932 states have call predecessors, (1562), 941 states have call successors, (1562) [2022-03-19 07:05:40,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7494 states to 7494 states and 11012 transitions. [2022-03-19 07:05:40,742 INFO L78 Accepts]: Start accepts. Automaton has 7494 states and 11012 transitions. Word has length 78 [2022-03-19 07:05:40,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:05:40,743 INFO L478 AbstractCegarLoop]: Abstraction has 7494 states and 11012 transitions. [2022-03-19 07:05:40,743 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-03-19 07:05:40,743 INFO L276 IsEmpty]: Start isEmpty. Operand 7494 states and 11012 transitions. [2022-03-19 07:05:40,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-19 07:05:40,744 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:05:40,744 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:05:40,744 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-19 07:05:40,744 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:05:40,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:05:40,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1608608426, now seen corresponding path program 1 times [2022-03-19 07:05:40,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:05:40,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1846205639] [2022-03-19 07:05:40,745 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:05:40,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1608608426, now seen corresponding path program 2 times [2022-03-19 07:05:40,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:05:40,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081415898] [2022-03-19 07:05:40,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:05:40,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:05:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:40,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:05:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:41,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:05:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:41,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:05:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:41,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:05:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:41,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:05:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:41,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:05:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:41,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 07:05:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:41,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 07:05:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:41,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 07:05:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:41,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:05:41,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:05:41,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081415898] [2022-03-19 07:05:41,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081415898] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:05:41,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:05:41,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 07:05:41,238 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:05:41,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1846205639] [2022-03-19 07:05:41,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1846205639] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:05:41,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:05:41,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 07:05:41,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583592623] [2022-03-19 07:05:41,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:05:41,239 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 07:05:41,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:05:41,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 07:05:41,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-19 07:05:41,239 INFO L87 Difference]: Start difference. First operand 7494 states and 11012 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-19 07:05:49,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:05:55,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:05:55,376 INFO L93 Difference]: Finished difference Result 14828 states and 22189 transitions. [2022-03-19 07:05:55,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-19 07:05:55,377 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 79 [2022-03-19 07:05:55,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:05:55,399 INFO L225 Difference]: With dead ends: 14828 [2022-03-19 07:05:55,399 INFO L226 Difference]: Without dead ends: 8502 [2022-03-19 07:05:55,415 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-03-19 07:05:55,415 INFO L912 BasicCegarLoop]: 664 mSDtfsCounter, 1652 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 2677 mSolverCounterSat, 714 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 3392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 714 IncrementalHoareTripleChecker+Valid, 2677 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-03-19 07:05:55,415 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1687 Valid, 1193 Invalid, 3392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [714 Valid, 2677 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-03-19 07:05:55,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8502 states. [2022-03-19 07:05:57,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8502 to 7452. [2022-03-19 07:05:57,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7452 states, 5892 states have (on average 1.4285471826205023) internal successors, (8417), 6096 states have internal predecessors, (8417), 967 states have call successors, (967), 469 states have call predecessors, (967), 592 states have return successors, (1566), 918 states have call predecessors, (1566), 945 states have call successors, (1566) [2022-03-19 07:05:57,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7452 states to 7452 states and 10950 transitions. [2022-03-19 07:05:57,933 INFO L78 Accepts]: Start accepts. Automaton has 7452 states and 10950 transitions. Word has length 79 [2022-03-19 07:05:57,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:05:57,933 INFO L478 AbstractCegarLoop]: Abstraction has 7452 states and 10950 transitions. [2022-03-19 07:05:57,933 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-19 07:05:57,933 INFO L276 IsEmpty]: Start isEmpty. Operand 7452 states and 10950 transitions. [2022-03-19 07:05:57,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-19 07:05:57,948 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:05:57,948 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:05:57,948 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-19 07:05:57,963 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:05:57,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:05:57,963 INFO L85 PathProgramCache]: Analyzing trace with hash -697853230, now seen corresponding path program 1 times [2022-03-19 07:05:57,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:05:57,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2108314733] [2022-03-19 07:05:57,966 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:05:57,966 INFO L85 PathProgramCache]: Analyzing trace with hash -697853230, now seen corresponding path program 2 times [2022-03-19 07:05:57,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:05:57,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636831088] [2022-03-19 07:05:57,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:05:57,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:05:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:58,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:05:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:58,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:05:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:58,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:05:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:58,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:05:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:58,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:05:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:58,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:05:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:58,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 07:05:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:58,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:05:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:05:58,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:05:58,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:05:58,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636831088] [2022-03-19 07:05:58,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636831088] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:05:58,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:05:58,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:05:58,487 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:05:58,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2108314733] [2022-03-19 07:05:58,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2108314733] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:05:58,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:05:58,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:05:58,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983107331] [2022-03-19 07:05:58,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:05:58,487 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 07:05:58,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:05:58,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 07:05:58,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-19 07:05:58,488 INFO L87 Difference]: Start difference. First operand 7452 states and 10950 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 3 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) [2022-03-19 07:06:07,308 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:06:14,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:06:14,068 INFO L93 Difference]: Finished difference Result 11678 states and 17536 transitions. [2022-03-19 07:06:14,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-19 07:06:14,069 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 3 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 [2022-03-19 07:06:14,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:06:14,087 INFO L225 Difference]: With dead ends: 11678 [2022-03-19 07:06:14,088 INFO L226 Difference]: Without dead ends: 8716 [2022-03-19 07:06:14,096 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2022-03-19 07:06:14,097 INFO L912 BasicCegarLoop]: 652 mSDtfsCounter, 1478 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 3294 mSolverCounterSat, 694 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 3989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 694 IncrementalHoareTripleChecker+Valid, 3294 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-03-19 07:06:14,097 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1511 Valid, 1253 Invalid, 3989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [694 Valid, 3294 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2022-03-19 07:06:14,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8716 states. [2022-03-19 07:06:16,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8716 to 7652. [2022-03-19 07:06:16,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7652 states, 6092 states have (on average 1.4276099803020355) internal successors, (8697), 6296 states have internal predecessors, (8697), 967 states have call successors, (967), 469 states have call predecessors, (967), 592 states have return successors, (1566), 918 states have call predecessors, (1566), 945 states have call successors, (1566) [2022-03-19 07:06:16,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7652 states to 7652 states and 11230 transitions. [2022-03-19 07:06:16,823 INFO L78 Accepts]: Start accepts. Automaton has 7652 states and 11230 transitions. Word has length 80 [2022-03-19 07:06:16,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:06:16,823 INFO L478 AbstractCegarLoop]: Abstraction has 7652 states and 11230 transitions. [2022-03-19 07:06:16,823 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 3 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) [2022-03-19 07:06:16,823 INFO L276 IsEmpty]: Start isEmpty. Operand 7652 states and 11230 transitions. [2022-03-19 07:06:16,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-03-19 07:06:16,824 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:06:16,824 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:06:16,824 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-19 07:06:16,825 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:06:16,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:06:16,825 INFO L85 PathProgramCache]: Analyzing trace with hash -192162812, now seen corresponding path program 1 times [2022-03-19 07:06:16,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:06:16,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1796042122] [2022-03-19 07:06:16,825 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:06:16,825 INFO L85 PathProgramCache]: Analyzing trace with hash -192162812, now seen corresponding path program 2 times [2022-03-19 07:06:16,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:06:16,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521640585] [2022-03-19 07:06:16,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:06:16,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:06:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:17,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:06:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:17,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:06:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:17,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:06:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:17,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:06:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:17,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:06:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:17,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:06:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:17,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 07:06:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:17,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-19 07:06:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:17,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-19 07:06:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:06:17,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:06:17,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521640585] [2022-03-19 07:06:17,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521640585] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:06:17,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:06:17,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:06:17,284 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:06:17,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1796042122] [2022-03-19 07:06:17,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1796042122] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:06:17,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:06:17,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:06:17,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984604678] [2022-03-19 07:06:17,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:06:17,284 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 07:06:17,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:06:17,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 07:06:17,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-19 07:06:17,285 INFO L87 Difference]: Start difference. First operand 7652 states and 11230 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (14), 9 states have call predecessors, (14), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 07:06:24,837 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:06:34,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:06:34,946 INFO L93 Difference]: Finished difference Result 10659 states and 15722 transitions. [2022-03-19 07:06:34,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-19 07:06:34,947 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (14), 9 states have call predecessors, (14), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 84 [2022-03-19 07:06:34,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:06:34,960 INFO L225 Difference]: With dead ends: 10659 [2022-03-19 07:06:34,960 INFO L226 Difference]: Without dead ends: 6505 [2022-03-19 07:06:34,969 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=271, Invalid=989, Unknown=0, NotChecked=0, Total=1260 [2022-03-19 07:06:34,969 INFO L912 BasicCegarLoop]: 977 mSDtfsCounter, 4218 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 4755 mSolverCounterSat, 1724 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4268 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 6480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1724 IncrementalHoareTripleChecker+Valid, 4755 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-03-19 07:06:34,969 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [4268 Valid, 1797 Invalid, 6480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1724 Valid, 4755 Invalid, 1 Unknown, 0 Unchecked, 13.0s Time] [2022-03-19 07:06:34,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6505 states. [2022-03-19 07:06:36,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6505 to 5514. [2022-03-19 07:06:36,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5514 states, 4422 states have (on average 1.4194934418815015) internal successors, (6277), 4539 states have internal predecessors, (6277), 672 states have call successors, (672), 347 states have call predecessors, (672), 419 states have return successors, (910), 649 states have call predecessors, (910), 654 states have call successors, (910) [2022-03-19 07:06:36,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5514 states to 5514 states and 7859 transitions. [2022-03-19 07:06:36,976 INFO L78 Accepts]: Start accepts. Automaton has 5514 states and 7859 transitions. Word has length 84 [2022-03-19 07:06:36,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:06:36,976 INFO L478 AbstractCegarLoop]: Abstraction has 5514 states and 7859 transitions. [2022-03-19 07:06:36,976 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (14), 9 states have call predecessors, (14), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 07:06:36,976 INFO L276 IsEmpty]: Start isEmpty. Operand 5514 states and 7859 transitions. [2022-03-19 07:06:36,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-03-19 07:06:36,977 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:06:36,977 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:06:36,977 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-19 07:06:36,978 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:06:36,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:06:36,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1582799931, now seen corresponding path program 1 times [2022-03-19 07:06:36,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:06:36,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [503263054] [2022-03-19 07:06:36,978 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:06:36,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1582799931, now seen corresponding path program 2 times [2022-03-19 07:06:36,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:06:36,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188704677] [2022-03-19 07:06:36,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:06:36,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:06:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:37,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:06:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:37,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:06:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:37,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:06:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:37,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:06:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:37,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:06:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:37,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:06:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:37,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 07:06:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:37,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-19 07:06:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:37,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:06:37,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:06:37,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188704677] [2022-03-19 07:06:37,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188704677] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:06:37,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:06:37,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:06:37,418 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:06:37,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [503263054] [2022-03-19 07:06:37,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [503263054] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:06:37,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:06:37,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:06:37,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031508524] [2022-03-19 07:06:37,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:06:37,419 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 07:06:37,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:06:37,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 07:06:37,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-19 07:06:37,420 INFO L87 Difference]: Start difference. First operand 5514 states and 7859 transitions. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 3 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) [2022-03-19 07:06:45,314 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:06:51,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:06:51,481 INFO L93 Difference]: Finished difference Result 9386 states and 13609 transitions. [2022-03-19 07:06:51,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-19 07:06:51,481 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 3 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 [2022-03-19 07:06:51,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:06:51,495 INFO L225 Difference]: With dead ends: 9386 [2022-03-19 07:06:51,495 INFO L226 Difference]: Without dead ends: 6493 [2022-03-19 07:06:51,501 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-03-19 07:06:51,501 INFO L912 BasicCegarLoop]: 666 mSDtfsCounter, 1311 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 3785 mSolverCounterSat, 539 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 4325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 3785 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-03-19 07:06:51,501 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1348 Valid, 1433 Invalid, 4325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 3785 Invalid, 1 Unknown, 0 Unchecked, 10.1s Time] [2022-03-19 07:06:51,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6493 states. [2022-03-19 07:06:53,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6493 to 5470. [2022-03-19 07:06:53,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5470 states, 4378 states have (on average 1.42188213796254) internal successors, (6225), 4495 states have internal predecessors, (6225), 672 states have call successors, (672), 347 states have call predecessors, (672), 419 states have return successors, (910), 649 states have call predecessors, (910), 654 states have call successors, (910) [2022-03-19 07:06:53,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5470 states to 5470 states and 7807 transitions. [2022-03-19 07:06:53,573 INFO L78 Accepts]: Start accepts. Automaton has 5470 states and 7807 transitions. Word has length 81 [2022-03-19 07:06:53,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:06:53,574 INFO L478 AbstractCegarLoop]: Abstraction has 5470 states and 7807 transitions. [2022-03-19 07:06:53,574 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 3 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) [2022-03-19 07:06:53,574 INFO L276 IsEmpty]: Start isEmpty. Operand 5470 states and 7807 transitions. [2022-03-19 07:06:53,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-03-19 07:06:53,575 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:06:53,575 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:06:53,575 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-19 07:06:53,575 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:06:53,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:06:53,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1178730404, now seen corresponding path program 1 times [2022-03-19 07:06:53,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:06:53,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1855825061] [2022-03-19 07:06:53,576 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:06:53,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1178730404, now seen corresponding path program 2 times [2022-03-19 07:06:53,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:06:53,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528306211] [2022-03-19 07:06:53,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:06:53,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:06:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:53,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:06:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:53,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:06:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:53,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:06:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:53,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:06:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:54,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:06:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:54,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:06:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:54,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-19 07:06:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:54,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:06:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:06:54,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:06:54,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:06:54,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528306211] [2022-03-19 07:06:54,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528306211] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:06:54,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:06:54,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-19 07:06:54,272 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:06:54,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1855825061] [2022-03-19 07:06:54,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1855825061] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:06:54,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:06:54,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-19 07:06:54,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508574230] [2022-03-19 07:06:54,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:06:54,273 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-19 07:06:54,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:06:54,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-19 07:06:54,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-19 07:06:54,274 INFO L87 Difference]: Start difference. First operand 5470 states and 7807 transitions. Second operand has 16 states, 16 states have (on average 3.9375) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:07:01,788 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:07:06,527 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:07:13,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:07:13,414 INFO L93 Difference]: Finished difference Result 6392 states and 9330 transitions. [2022-03-19 07:07:13,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-19 07:07:13,415 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 81 [2022-03-19 07:07:13,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:07:13,429 INFO L225 Difference]: With dead ends: 6392 [2022-03-19 07:07:13,429 INFO L226 Difference]: Without dead ends: 6372 [2022-03-19 07:07:13,432 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2022-03-19 07:07:13,432 INFO L912 BasicCegarLoop]: 662 mSDtfsCounter, 1658 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 6611 mSolverCounterSat, 719 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1697 SdHoareTripleChecker+Valid, 2214 SdHoareTripleChecker+Invalid, 7331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 719 IncrementalHoareTripleChecker+Valid, 6611 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-03-19 07:07:13,432 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1697 Valid, 2214 Invalid, 7331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [719 Valid, 6611 Invalid, 1 Unknown, 0 Unchecked, 15.1s Time] [2022-03-19 07:07:13,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6372 states. [2022-03-19 07:07:15,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6372 to 5466. [2022-03-19 07:07:15,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5466 states, 4375 states have (on average 1.4219428571428572) internal successors, (6221), 4492 states have internal predecessors, (6221), 671 states have call successors, (671), 347 states have call predecessors, (671), 419 states have return successors, (909), 648 states have call predecessors, (909), 653 states have call successors, (909) [2022-03-19 07:07:15,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5466 states to 5466 states and 7801 transitions. [2022-03-19 07:07:15,570 INFO L78 Accepts]: Start accepts. Automaton has 5466 states and 7801 transitions. Word has length 81 [2022-03-19 07:07:15,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:07:15,571 INFO L478 AbstractCegarLoop]: Abstraction has 5466 states and 7801 transitions. [2022-03-19 07:07:15,571 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:07:15,571 INFO L276 IsEmpty]: Start isEmpty. Operand 5466 states and 7801 transitions. [2022-03-19 07:07:15,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-03-19 07:07:15,572 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:07:15,572 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:07:15,572 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-19 07:07:15,572 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:07:15,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:07:15,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1957637781, now seen corresponding path program 1 times [2022-03-19 07:07:15,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:07:15,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [471428035] [2022-03-19 07:07:15,573 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:07:15,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1957637781, now seen corresponding path program 2 times [2022-03-19 07:07:15,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:07:15,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703823323] [2022-03-19 07:07:15,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:07:15,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:07:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:15,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:07:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:15,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:07:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:15,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:07:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:15,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:07:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:15,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:07:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:15,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:07:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:16,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 07:07:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:16,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 07:07:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:16,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:07:16,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:07:16,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703823323] [2022-03-19 07:07:16,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703823323] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:07:16,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:07:16,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 07:07:16,106 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:07:16,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [471428035] [2022-03-19 07:07:16,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [471428035] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:07:16,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:07:16,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 07:07:16,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772925433] [2022-03-19 07:07:16,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:07:16,107 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 07:07:16,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:07:16,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 07:07:16,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-19 07:07:16,107 INFO L87 Difference]: Start difference. First operand 5466 states and 7801 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 07:07:26,607 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:07:32,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:07:32,803 INFO L93 Difference]: Finished difference Result 6465 states and 9486 transitions. [2022-03-19 07:07:32,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-19 07:07:32,803 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 5 states have internal predecessors, (64), 3 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 82 [2022-03-19 07:07:32,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:07:32,816 INFO L225 Difference]: With dead ends: 6465 [2022-03-19 07:07:32,816 INFO L226 Difference]: Without dead ends: 6449 [2022-03-19 07:07:32,819 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2022-03-19 07:07:32,819 INFO L912 BasicCegarLoop]: 664 mSDtfsCounter, 1788 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 5198 mSolverCounterSat, 798 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1826 SdHoareTripleChecker+Valid, 1930 SdHoareTripleChecker+Invalid, 5997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 5198 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-03-19 07:07:32,819 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1826 Valid, 1930 Invalid, 5997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 5198 Invalid, 1 Unknown, 0 Unchecked, 12.6s Time] [2022-03-19 07:07:32,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6449 states. [2022-03-19 07:07:34,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6449 to 5471. [2022-03-19 07:07:34,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5471 states, 4378 states have (on average 1.4221105527638191) internal successors, (6226), 4496 states have internal predecessors, (6226), 673 states have call successors, (673), 347 states have call predecessors, (673), 419 states have return successors, (911), 649 states have call predecessors, (911), 655 states have call successors, (911) [2022-03-19 07:07:34,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5471 states to 5471 states and 7810 transitions. [2022-03-19 07:07:34,917 INFO L78 Accepts]: Start accepts. Automaton has 5471 states and 7810 transitions. Word has length 82 [2022-03-19 07:07:34,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:07:34,917 INFO L478 AbstractCegarLoop]: Abstraction has 5471 states and 7810 transitions. [2022-03-19 07:07:34,917 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 07:07:34,917 INFO L276 IsEmpty]: Start isEmpty. Operand 5471 states and 7810 transitions. [2022-03-19 07:07:34,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-03-19 07:07:34,919 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:07:34,919 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:07:34,919 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-19 07:07:34,919 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:07:34,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:07:34,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1156094369, now seen corresponding path program 1 times [2022-03-19 07:07:34,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:07:34,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2027462318] [2022-03-19 07:07:34,920 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:07:34,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1156094369, now seen corresponding path program 2 times [2022-03-19 07:07:34,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:07:34,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875469482] [2022-03-19 07:07:34,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:07:34,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:07:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:35,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:07:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:35,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:07:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:35,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:07:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:35,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:07:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:35,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:07:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:35,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:07:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:35,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 07:07:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:35,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:07:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:35,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 07:07:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:07:35,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:07:35,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875469482] [2022-03-19 07:07:35,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875469482] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:07:35,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:07:35,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 07:07:35,386 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:07:35,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2027462318] [2022-03-19 07:07:35,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2027462318] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:07:35,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:07:35,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 07:07:35,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942534410] [2022-03-19 07:07:35,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:07:35,388 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 07:07:35,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:07:35,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 07:07:35,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-03-19 07:07:35,388 INFO L87 Difference]: Start difference. First operand 5471 states and 7810 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 11 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 07:07:46,343 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:07:52,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:07:52,595 INFO L93 Difference]: Finished difference Result 9470 states and 13860 transitions. [2022-03-19 07:07:52,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-19 07:07:52,595 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 11 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 84 [2022-03-19 07:07:52,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:07:52,609 INFO L225 Difference]: With dead ends: 9470 [2022-03-19 07:07:52,609 INFO L226 Difference]: Without dead ends: 6608 [2022-03-19 07:07:52,615 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2022-03-19 07:07:52,616 INFO L912 BasicCegarLoop]: 654 mSDtfsCounter, 1875 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 4514 mSolverCounterSat, 873 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1908 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 5388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 873 IncrementalHoareTripleChecker+Valid, 4514 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-03-19 07:07:52,616 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1908 Valid, 1584 Invalid, 5388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [873 Valid, 4514 Invalid, 1 Unknown, 0 Unchecked, 12.8s Time] [2022-03-19 07:07:52,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6608 states. [2022-03-19 07:07:54,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6608 to 5465. [2022-03-19 07:07:54,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5465 states, 4372 states have (on average 1.4226898444647758) internal successors, (6220), 4490 states have internal predecessors, (6220), 673 states have call successors, (673), 347 states have call predecessors, (673), 419 states have return successors, (911), 649 states have call predecessors, (911), 655 states have call successors, (911) [2022-03-19 07:07:54,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5465 states to 5465 states and 7804 transitions. [2022-03-19 07:07:54,785 INFO L78 Accepts]: Start accepts. Automaton has 5465 states and 7804 transitions. Word has length 84 [2022-03-19 07:07:54,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:07:54,786 INFO L478 AbstractCegarLoop]: Abstraction has 5465 states and 7804 transitions. [2022-03-19 07:07:54,786 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 11 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 07:07:54,786 INFO L276 IsEmpty]: Start isEmpty. Operand 5465 states and 7804 transitions. [2022-03-19 07:07:54,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-03-19 07:07:54,787 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:07:54,787 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:07:54,787 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-19 07:07:54,787 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:07:54,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:07:54,787 INFO L85 PathProgramCache]: Analyzing trace with hash -252551860, now seen corresponding path program 1 times [2022-03-19 07:07:54,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:07:54,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2108273049] [2022-03-19 07:07:54,788 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:07:54,788 INFO L85 PathProgramCache]: Analyzing trace with hash -252551860, now seen corresponding path program 2 times [2022-03-19 07:07:54,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:07:54,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9429773] [2022-03-19 07:07:54,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:07:54,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:07:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:55,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:07:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:55,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:07:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:55,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:07:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:55,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:07:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:55,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:07:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:55,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:07:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:55,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 07:07:55,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:55,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 07:07:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:07:55,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:07:55,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:07:55,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9429773] [2022-03-19 07:07:55,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9429773] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:07:55,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:07:55,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:07:55,282 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:07:55,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2108273049] [2022-03-19 07:07:55,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2108273049] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:07:55,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:07:55,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:07:55,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825196311] [2022-03-19 07:07:55,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:07:55,302 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 07:07:55,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:07:55,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 07:07:55,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-19 07:07:55,303 INFO L87 Difference]: Start difference. First operand 5465 states and 7804 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:08:04,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:08:10,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:08:10,650 INFO L93 Difference]: Finished difference Result 11441 states and 16746 transitions. [2022-03-19 07:08:10,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-19 07:08:10,650 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 83 [2022-03-19 07:08:10,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:08:10,689 INFO L225 Difference]: With dead ends: 11441 [2022-03-19 07:08:10,689 INFO L226 Difference]: Without dead ends: 6534 [2022-03-19 07:08:10,699 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2022-03-19 07:08:10,699 INFO L912 BasicCegarLoop]: 649 mSDtfsCounter, 1833 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 4115 mSolverCounterSat, 830 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1867 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 4946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 830 IncrementalHoareTripleChecker+Valid, 4115 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-03-19 07:08:10,700 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1867 Valid, 1519 Invalid, 4946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [830 Valid, 4115 Invalid, 1 Unknown, 0 Unchecked, 11.1s Time] [2022-03-19 07:08:10,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6534 states. [2022-03-19 07:08:12,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6534 to 5477. [2022-03-19 07:08:12,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5477 states, 4384 states have (on average 1.4215328467153285) internal successors, (6232), 4490 states have internal predecessors, (6232), 673 states have call successors, (673), 347 states have call predecessors, (673), 419 states have return successors, (911), 661 states have call predecessors, (911), 655 states have call successors, (911) [2022-03-19 07:08:12,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5477 states to 5477 states and 7816 transitions. [2022-03-19 07:08:12,865 INFO L78 Accepts]: Start accepts. Automaton has 5477 states and 7816 transitions. Word has length 83 [2022-03-19 07:08:12,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:08:12,866 INFO L478 AbstractCegarLoop]: Abstraction has 5477 states and 7816 transitions. [2022-03-19 07:08:12,866 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:08:12,866 INFO L276 IsEmpty]: Start isEmpty. Operand 5477 states and 7816 transitions. [2022-03-19 07:08:12,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-03-19 07:08:12,867 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:08:12,867 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:08:12,867 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-19 07:08:12,867 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:08:12,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:08:12,867 INFO L85 PathProgramCache]: Analyzing trace with hash 5334329, now seen corresponding path program 1 times [2022-03-19 07:08:12,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:08:12,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1329423658] [2022-03-19 07:08:12,867 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:08:12,868 INFO L85 PathProgramCache]: Analyzing trace with hash 5334329, now seen corresponding path program 2 times [2022-03-19 07:08:12,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:08:12,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775158091] [2022-03-19 07:08:12,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:08:12,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:08:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:13,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:08:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:13,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:08:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:13,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:08:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:13,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:08:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:13,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:08:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:13,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:08:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:13,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-19 07:08:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:13,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:08:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:13,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-19 07:08:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:13,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:08:13,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:08:13,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775158091] [2022-03-19 07:08:13,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775158091] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:08:13,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:08:13,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 07:08:13,322 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:08:13,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1329423658] [2022-03-19 07:08:13,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1329423658] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:08:13,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:08:13,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 07:08:13,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421713495] [2022-03-19 07:08:13,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:08:13,322 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 07:08:13,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:08:13,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 07:08:13,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-03-19 07:08:13,323 INFO L87 Difference]: Start difference. First operand 5477 states and 7816 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (11), 11 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 07:08:18,799 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:08:25,080 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:08:31,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:08:31,305 INFO L93 Difference]: Finished difference Result 6409 states and 9350 transitions. [2022-03-19 07:08:31,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-19 07:08:31,306 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (11), 11 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 84 [2022-03-19 07:08:31,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:08:31,317 INFO L225 Difference]: With dead ends: 6409 [2022-03-19 07:08:31,318 INFO L226 Difference]: Without dead ends: 6387 [2022-03-19 07:08:31,319 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2022-03-19 07:08:31,319 INFO L912 BasicCegarLoop]: 666 mSDtfsCounter, 1798 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 5210 mSolverCounterSat, 778 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1836 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 5990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 5210 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-03-19 07:08:31,319 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1836 Valid, 1940 Invalid, 5990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 5210 Invalid, 2 Unknown, 0 Unchecked, 13.9s Time] [2022-03-19 07:08:31,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6387 states. [2022-03-19 07:08:33,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6387 to 5476. [2022-03-19 07:08:33,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5476 states, 4384 states have (on average 1.4213047445255473) internal successors, (6231), 4489 states have internal predecessors, (6231), 672 states have call successors, (672), 347 states have call predecessors, (672), 419 states have return successors, (910), 661 states have call predecessors, (910), 654 states have call successors, (910) [2022-03-19 07:08:33,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5476 states to 5476 states and 7813 transitions. [2022-03-19 07:08:33,553 INFO L78 Accepts]: Start accepts. Automaton has 5476 states and 7813 transitions. Word has length 84 [2022-03-19 07:08:33,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:08:33,553 INFO L478 AbstractCegarLoop]: Abstraction has 5476 states and 7813 transitions. [2022-03-19 07:08:33,553 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (11), 11 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 07:08:33,553 INFO L276 IsEmpty]: Start isEmpty. Operand 5476 states and 7813 transitions. [2022-03-19 07:08:33,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-03-19 07:08:33,554 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:08:33,554 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:08:33,555 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-19 07:08:33,555 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:08:33,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:08:33,555 INFO L85 PathProgramCache]: Analyzing trace with hash 174205264, now seen corresponding path program 1 times [2022-03-19 07:08:33,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:08:33,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1568897872] [2022-03-19 07:08:33,555 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:08:33,555 INFO L85 PathProgramCache]: Analyzing trace with hash 174205264, now seen corresponding path program 2 times [2022-03-19 07:08:33,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:08:33,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565172769] [2022-03-19 07:08:33,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:08:33,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:08:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:33,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:08:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:33,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:08:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:33,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:08:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:33,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:08:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:33,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:08:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:33,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:08:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:33,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 07:08:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:33,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 07:08:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:08:33,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:08:33,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565172769] [2022-03-19 07:08:33,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565172769] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:08:33,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:08:33,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:08:33,998 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:08:33,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1568897872] [2022-03-19 07:08:33,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1568897872] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:08:33,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:08:33,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:08:33,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013250947] [2022-03-19 07:08:33,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:08:33,998 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 07:08:33,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:08:33,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 07:08:33,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-19 07:08:33,999 INFO L87 Difference]: Start difference. First operand 5476 states and 7813 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 07:08:41,449 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:08:46,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:08:46,945 INFO L93 Difference]: Finished difference Result 9560 states and 13887 transitions. [2022-03-19 07:08:46,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-19 07:08:46,945 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2022-03-19 07:08:46,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:08:46,973 INFO L225 Difference]: With dead ends: 9560 [2022-03-19 07:08:46,973 INFO L226 Difference]: Without dead ends: 6699 [2022-03-19 07:08:46,996 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2022-03-19 07:08:47,007 INFO L912 BasicCegarLoop]: 651 mSDtfsCounter, 2442 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 2507 mSolverCounterSat, 1069 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2479 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 3577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1069 IncrementalHoareTripleChecker+Valid, 2507 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-03-19 07:08:47,007 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2479 Valid, 1250 Invalid, 3577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1069 Valid, 2507 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2022-03-19 07:08:47,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6699 states. [2022-03-19 07:08:49,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6699 to 5536. [2022-03-19 07:08:49,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5536 states, 4444 states have (on average 1.4156165616561656) internal successors, (6291), 4549 states have internal predecessors, (6291), 672 states have call successors, (672), 347 states have call predecessors, (672), 419 states have return successors, (910), 661 states have call predecessors, (910), 654 states have call successors, (910) [2022-03-19 07:08:49,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5536 states to 5536 states and 7873 transitions. [2022-03-19 07:08:49,250 INFO L78 Accepts]: Start accepts. Automaton has 5536 states and 7873 transitions. Word has length 84 [2022-03-19 07:08:49,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:08:49,250 INFO L478 AbstractCegarLoop]: Abstraction has 5536 states and 7873 transitions. [2022-03-19 07:08:49,250 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 07:08:49,250 INFO L276 IsEmpty]: Start isEmpty. Operand 5536 states and 7873 transitions. [2022-03-19 07:08:49,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-03-19 07:08:49,251 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:08:49,252 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:08:49,252 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-19 07:08:49,252 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:08:49,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:08:49,252 INFO L85 PathProgramCache]: Analyzing trace with hash -848816393, now seen corresponding path program 1 times [2022-03-19 07:08:49,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:08:49,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [631424052] [2022-03-19 07:08:49,252 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:08:49,252 INFO L85 PathProgramCache]: Analyzing trace with hash -848816393, now seen corresponding path program 2 times [2022-03-19 07:08:49,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:08:49,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195112653] [2022-03-19 07:08:49,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:08:49,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:08:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:49,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:08:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:49,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:08:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:49,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:08:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:49,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:08:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:49,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:08:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:49,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:08:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:49,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-19 07:08:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:49,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-19 07:08:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:49,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-19 07:08:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:49,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:08:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:49,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-19 07:08:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:08:49,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:08:49,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:08:49,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195112653] [2022-03-19 07:08:49,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195112653] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:08:49,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:08:49,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:08:49,643 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:08:49,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [631424052] [2022-03-19 07:08:49,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [631424052] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:08:49,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:08:49,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:08:49,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612537643] [2022-03-19 07:08:49,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:08:49,644 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 07:08:49,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:08:49,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 07:08:49,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-19 07:08:49,644 INFO L87 Difference]: Start difference. First operand 5536 states and 7873 transitions. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (16), 10 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-03-19 07:08:57,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:09:03,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:09:03,865 INFO L93 Difference]: Finished difference Result 9783 states and 14172 transitions. [2022-03-19 07:09:03,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-19 07:09:03,865 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (16), 10 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 90 [2022-03-19 07:09:03,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:09:03,897 INFO L225 Difference]: With dead ends: 9783 [2022-03-19 07:09:03,897 INFO L226 Difference]: Without dead ends: 6467 [2022-03-19 07:09:03,903 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=245, Invalid=685, Unknown=0, NotChecked=0, Total=930 [2022-03-19 07:09:03,904 INFO L912 BasicCegarLoop]: 638 mSDtfsCounter, 1646 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 3054 mSolverCounterSat, 725 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 3780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 725 IncrementalHoareTripleChecker+Valid, 3054 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-03-19 07:09:03,904 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1684 Valid, 1419 Invalid, 3780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [725 Valid, 3054 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2022-03-19 07:09:03,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6467 states. [2022-03-19 07:09:06,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6467 to 5505. [2022-03-19 07:09:06,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5505 states, 4421 states have (on average 1.4159692377290205) internal successors, (6260), 4524 states have internal predecessors, (6260), 669 states have call successors, (669), 345 states have call predecessors, (669), 414 states have return successors, (888), 657 states have call predecessors, (888), 651 states have call successors, (888) [2022-03-19 07:09:06,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5505 states to 5505 states and 7817 transitions. [2022-03-19 07:09:06,183 INFO L78 Accepts]: Start accepts. Automaton has 5505 states and 7817 transitions. Word has length 90 [2022-03-19 07:09:06,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:09:06,184 INFO L478 AbstractCegarLoop]: Abstraction has 5505 states and 7817 transitions. [2022-03-19 07:09:06,184 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (16), 10 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-03-19 07:09:06,184 INFO L276 IsEmpty]: Start isEmpty. Operand 5505 states and 7817 transitions. [2022-03-19 07:09:06,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-03-19 07:09:06,185 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:09:06,185 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:09:06,185 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-19 07:09:06,185 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:09:06,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:09:06,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1334190776, now seen corresponding path program 1 times [2022-03-19 07:09:06,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:09:06,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [35770281] [2022-03-19 07:09:06,186 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:09:06,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1334190776, now seen corresponding path program 2 times [2022-03-19 07:09:06,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:09:06,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074409239] [2022-03-19 07:09:06,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:09:06,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:09:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:06,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:09:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:06,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:09:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:06,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:09:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:06,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:09:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:06,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:09:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:06,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:09:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:06,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 07:09:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:06,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:09:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:06,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 07:09:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:06,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:09:06,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:09:06,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074409239] [2022-03-19 07:09:06,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074409239] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:09:06,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:09:06,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:09:06,656 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:09:06,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [35770281] [2022-03-19 07:09:06,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [35770281] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:09:06,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:09:06,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 07:09:06,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617693944] [2022-03-19 07:09:06,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:09:06,656 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 07:09:06,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:09:06,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 07:09:06,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-19 07:09:06,657 INFO L87 Difference]: Start difference. First operand 5505 states and 7817 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-19 07:09:17,538 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:09:23,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:09:23,999 INFO L93 Difference]: Finished difference Result 11488 states and 16729 transitions. [2022-03-19 07:09:23,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-19 07:09:24,000 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) Word has length 86 [2022-03-19 07:09:24,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:09:24,014 INFO L225 Difference]: With dead ends: 11488 [2022-03-19 07:09:24,014 INFO L226 Difference]: Without dead ends: 6490 [2022-03-19 07:09:24,023 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2022-03-19 07:09:24,023 INFO L912 BasicCegarLoop]: 637 mSDtfsCounter, 1532 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 4791 mSolverCounterSat, 656 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 5448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 4791 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-03-19 07:09:24,024 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1567 Valid, 1583 Invalid, 5448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 4791 Invalid, 1 Unknown, 0 Unchecked, 12.9s Time] [2022-03-19 07:09:24,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6490 states. [2022-03-19 07:09:26,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6490 to 5565. [2022-03-19 07:09:26,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5565 states, 4466 states have (on average 1.4117778772951186) internal successors, (6305), 4569 states have internal predecessors, (6305), 669 states have call successors, (669), 345 states have call predecessors, (669), 429 states have return successors, (903), 672 states have call predecessors, (903), 651 states have call successors, (903) [2022-03-19 07:09:26,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5565 states to 5565 states and 7877 transitions. [2022-03-19 07:09:26,437 INFO L78 Accepts]: Start accepts. Automaton has 5565 states and 7877 transitions. Word has length 86 [2022-03-19 07:09:26,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:09:26,437 INFO L478 AbstractCegarLoop]: Abstraction has 5565 states and 7877 transitions. [2022-03-19 07:09:26,437 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-19 07:09:26,437 INFO L276 IsEmpty]: Start isEmpty. Operand 5565 states and 7877 transitions. [2022-03-19 07:09:26,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-03-19 07:09:26,439 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:09:26,439 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:09:26,439 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-19 07:09:26,439 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:09:26,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:09:26,439 INFO L85 PathProgramCache]: Analyzing trace with hash -680978953, now seen corresponding path program 1 times [2022-03-19 07:09:26,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:09:26,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1589746354] [2022-03-19 07:09:26,440 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:09:26,440 INFO L85 PathProgramCache]: Analyzing trace with hash -680978953, now seen corresponding path program 2 times [2022-03-19 07:09:26,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:09:26,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389412869] [2022-03-19 07:09:26,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:09:26,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:09:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:26,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:09:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:26,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:09:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:26,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:09:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:26,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:09:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:26,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:09:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:26,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:09:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:26,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 07:09:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:26,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 07:09:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:26,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 07:09:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:26,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:09:26,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:09:26,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389412869] [2022-03-19 07:09:26,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389412869] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:09:26,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:09:26,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 07:09:26,935 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:09:26,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1589746354] [2022-03-19 07:09:26,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1589746354] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:09:26,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:09:26,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 07:09:26,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654053830] [2022-03-19 07:09:26,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:09:26,935 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 07:09:26,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:09:26,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 07:09:26,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-19 07:09:26,935 INFO L87 Difference]: Start difference. First operand 5565 states and 7877 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-19 07:09:32,772 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:09:34,901 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:09:41,157 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:09:48,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:09:48,081 INFO L93 Difference]: Finished difference Result 11610 states and 16812 transitions. [2022-03-19 07:09:48,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-19 07:09:48,081 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) Word has length 86 [2022-03-19 07:09:48,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:09:48,096 INFO L225 Difference]: With dead ends: 11610 [2022-03-19 07:09:48,096 INFO L226 Difference]: Without dead ends: 6571 [2022-03-19 07:09:48,106 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2022-03-19 07:09:48,107 INFO L912 BasicCegarLoop]: 633 mSDtfsCounter, 1640 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 4898 mSolverCounterSat, 733 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1675 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 5634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 733 IncrementalHoareTripleChecker+Valid, 4898 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-03-19 07:09:48,108 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1675 Valid, 1681 Invalid, 5634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [733 Valid, 4898 Invalid, 3 Unknown, 0 Unchecked, 16.1s Time] [2022-03-19 07:09:48,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6571 states. [2022-03-19 07:09:50,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6571 to 5586. [2022-03-19 07:09:50,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5586 states, 4487 states have (on average 1.4098506797414754) internal successors, (6326), 4593 states have internal predecessors, (6326), 669 states have call successors, (669), 345 states have call predecessors, (669), 429 states have return successors, (903), 669 states have call predecessors, (903), 651 states have call successors, (903) [2022-03-19 07:09:50,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5586 states to 5586 states and 7898 transitions. [2022-03-19 07:09:50,527 INFO L78 Accepts]: Start accepts. Automaton has 5586 states and 7898 transitions. Word has length 86 [2022-03-19 07:09:50,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:09:50,527 INFO L478 AbstractCegarLoop]: Abstraction has 5586 states and 7898 transitions. [2022-03-19 07:09:50,527 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-19 07:09:50,527 INFO L276 IsEmpty]: Start isEmpty. Operand 5586 states and 7898 transitions. [2022-03-19 07:09:50,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-19 07:09:50,528 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:09:50,528 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:09:50,528 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-19 07:09:50,528 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:09:50,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:09:50,529 INFO L85 PathProgramCache]: Analyzing trace with hash -520968227, now seen corresponding path program 1 times [2022-03-19 07:09:50,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:09:50,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [120750647] [2022-03-19 07:09:50,529 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:09:50,529 INFO L85 PathProgramCache]: Analyzing trace with hash -520968227, now seen corresponding path program 2 times [2022-03-19 07:09:50,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:09:50,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003139143] [2022-03-19 07:09:50,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:09:50,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:09:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:50,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:09:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:50,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:09:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:50,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:09:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:50,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:09:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:50,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:09:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:50,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:09:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:51,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 07:09:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:51,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 07:09:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:51,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 07:09:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:51,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-19 07:09:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:51,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-19 07:09:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:09:51,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 07:09:51,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:09:51,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003139143] [2022-03-19 07:09:51,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003139143] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:09:51,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:09:51,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-19 07:09:51,193 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:09:51,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [120750647] [2022-03-19 07:09:51,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [120750647] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:09:51,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:09:51,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-19 07:09:51,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731569364] [2022-03-19 07:09:51,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:09:51,193 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-19 07:09:51,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:09:51,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-19 07:09:51,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-03-19 07:09:51,194 INFO L87 Difference]: Start difference. First operand 5586 states and 7898 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (13), 11 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11) [2022-03-19 07:10:03,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:10:10,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:10:10,585 INFO L93 Difference]: Finished difference Result 6534 states and 9475 transitions. [2022-03-19 07:10:10,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-19 07:10:10,585 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (13), 11 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11) Word has length 88 [2022-03-19 07:10:10,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:10:10,597 INFO L225 Difference]: With dead ends: 6534 [2022-03-19 07:10:10,597 INFO L226 Difference]: Without dead ends: 6518 [2022-03-19 07:10:10,599 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2022-03-19 07:10:10,599 INFO L912 BasicCegarLoop]: 671 mSDtfsCounter, 2013 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 6417 mSolverCounterSat, 909 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2052 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 7327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 909 IncrementalHoareTripleChecker+Valid, 6417 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-03-19 07:10:10,599 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2052 Valid, 2268 Invalid, 7327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [909 Valid, 6417 Invalid, 1 Unknown, 0 Unchecked, 14.6s Time] [2022-03-19 07:10:10,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6518 states. [2022-03-19 07:10:13,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6518 to 5586. [2022-03-19 07:10:13,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5586 states, 4487 states have (on average 1.4098506797414754) internal successors, (6326), 4593 states have internal predecessors, (6326), 669 states have call successors, (669), 345 states have call predecessors, (669), 429 states have return successors, (903), 669 states have call predecessors, (903), 651 states have call successors, (903) [2022-03-19 07:10:13,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5586 states to 5586 states and 7898 transitions. [2022-03-19 07:10:13,022 INFO L78 Accepts]: Start accepts. Automaton has 5586 states and 7898 transitions. Word has length 88 [2022-03-19 07:10:13,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:10:13,023 INFO L478 AbstractCegarLoop]: Abstraction has 5586 states and 7898 transitions. [2022-03-19 07:10:13,023 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (13), 11 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11) [2022-03-19 07:10:13,023 INFO L276 IsEmpty]: Start isEmpty. Operand 5586 states and 7898 transitions. [2022-03-19 07:10:13,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-19 07:10:13,024 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:10:13,024 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:10:13,024 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-19 07:10:13,024 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:10:13,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:10:13,024 INFO L85 PathProgramCache]: Analyzing trace with hash -243689622, now seen corresponding path program 1 times [2022-03-19 07:10:13,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:10:13,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [599529592] [2022-03-19 07:10:13,025 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:10:13,025 INFO L85 PathProgramCache]: Analyzing trace with hash -243689622, now seen corresponding path program 2 times [2022-03-19 07:10:13,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:10:13,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44989453] [2022-03-19 07:10:13,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:10:13,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:10:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:10:13,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:10:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:10:13,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:10:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:10:13,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:10:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:10:13,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:10:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:10:13,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:10:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:10:13,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:10:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:10:13,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-19 07:10:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:10:13,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 07:10:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:10:13,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:10:13,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:10:13,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44989453] [2022-03-19 07:10:13,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44989453] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:10:13,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:10:13,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-19 07:10:13,647 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:10:13,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [599529592] [2022-03-19 07:10:13,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [599529592] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:10:13,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:10:13,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-19 07:10:13,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380693559] [2022-03-19 07:10:13,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:10:13,647 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-19 07:10:13,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:10:13,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-19 07:10:13,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-03-19 07:10:13,649 INFO L87 Difference]: Start difference. First operand 5586 states and 7898 transitions. Second operand has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:10:20,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:10:22,757 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:10:24,908 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:10:32,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:10:39,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:10:39,513 INFO L93 Difference]: Finished difference Result 6515 states and 9424 transitions. [2022-03-19 07:10:39,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-19 07:10:39,513 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 85 [2022-03-19 07:10:39,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:10:39,527 INFO L225 Difference]: With dead ends: 6515 [2022-03-19 07:10:39,528 INFO L226 Difference]: Without dead ends: 6492 [2022-03-19 07:10:39,530 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2022-03-19 07:10:39,530 INFO L912 BasicCegarLoop]: 663 mSDtfsCounter, 1677 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 7093 mSolverCounterSat, 757 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 2310 SdHoareTripleChecker+Invalid, 7854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 757 IncrementalHoareTripleChecker+Valid, 7093 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2022-03-19 07:10:39,530 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1716 Valid, 2310 Invalid, 7854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [757 Valid, 7093 Invalid, 4 Unknown, 0 Unchecked, 21.3s Time] [2022-03-19 07:10:39,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6492 states. [2022-03-19 07:10:41,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6492 to 5582. [2022-03-19 07:10:41,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5582 states, 4484 states have (on average 1.4099018733273863) internal successors, (6322), 4590 states have internal predecessors, (6322), 668 states have call successors, (668), 345 states have call predecessors, (668), 429 states have return successors, (902), 668 states have call predecessors, (902), 650 states have call successors, (902) [2022-03-19 07:10:42,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5582 states to 5582 states and 7892 transitions. [2022-03-19 07:10:42,004 INFO L78 Accepts]: Start accepts. Automaton has 5582 states and 7892 transitions. Word has length 85 [2022-03-19 07:10:42,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:10:42,004 INFO L478 AbstractCegarLoop]: Abstraction has 5582 states and 7892 transitions. [2022-03-19 07:10:42,004 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:10:42,004 INFO L276 IsEmpty]: Start isEmpty. Operand 5582 states and 7892 transitions. [2022-03-19 07:10:42,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-19 07:10:42,005 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:10:42,005 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:10:42,005 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-19 07:10:42,006 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:10:42,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:10:42,006 INFO L85 PathProgramCache]: Analyzing trace with hash -19498270, now seen corresponding path program 1 times [2022-03-19 07:10:42,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:10:42,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1331337659] [2022-03-19 07:10:42,006 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:10:42,006 INFO L85 PathProgramCache]: Analyzing trace with hash -19498270, now seen corresponding path program 2 times [2022-03-19 07:10:42,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:10:42,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737671319] [2022-03-19 07:10:42,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:10:42,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:10:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:10:42,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:10:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:10:42,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:10:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:10:42,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:10:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:10:42,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:10:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:10:42,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:10:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:10:42,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:10:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:10:42,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-19 07:10:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:10:42,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 07:10:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:10:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:10:42,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:10:42,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737671319] [2022-03-19 07:10:42,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737671319] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:10:42,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:10:42,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-19 07:10:42,609 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:10:42,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1331337659] [2022-03-19 07:10:42,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1331337659] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:10:42,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:10:42,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-19 07:10:42,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285682682] [2022-03-19 07:10:42,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:10:42,609 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-19 07:10:42,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:10:42,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-19 07:10:42,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-03-19 07:10:42,610 INFO L87 Difference]: Start difference. First operand 5582 states and 7892 transitions. Second operand has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:10:54,589 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:11:02,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:11:02,253 INFO L93 Difference]: Finished difference Result 6511 states and 9418 transitions. [2022-03-19 07:11:02,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-19 07:11:02,253 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 85 [2022-03-19 07:11:02,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:11:02,264 INFO L225 Difference]: With dead ends: 6511 [2022-03-19 07:11:02,264 INFO L226 Difference]: Without dead ends: 6487 [2022-03-19 07:11:02,265 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2022-03-19 07:11:02,266 INFO L912 BasicCegarLoop]: 659 mSDtfsCounter, 2182 mSDsluCounter, 1705 mSDsCounter, 0 mSdLazyCounter, 6843 mSolverCounterSat, 965 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2221 SdHoareTripleChecker+Valid, 2364 SdHoareTripleChecker+Invalid, 7809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 965 IncrementalHoareTripleChecker+Valid, 6843 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-03-19 07:11:02,266 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2221 Valid, 2364 Invalid, 7809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [965 Valid, 6843 Invalid, 1 Unknown, 0 Unchecked, 14.7s Time] [2022-03-19 07:11:02,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6487 states. [2022-03-19 07:11:04,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6487 to 5577. [2022-03-19 07:11:04,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5577 states, 4480 states have (on average 1.410044642857143) internal successors, (6317), 4586 states have internal predecessors, (6317), 667 states have call successors, (667), 345 states have call predecessors, (667), 429 states have return successors, (901), 667 states have call predecessors, (901), 649 states have call successors, (901) [2022-03-19 07:11:04,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 7885 transitions. [2022-03-19 07:11:04,883 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 7885 transitions. Word has length 85 [2022-03-19 07:11:04,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:11:04,884 INFO L478 AbstractCegarLoop]: Abstraction has 5577 states and 7885 transitions. [2022-03-19 07:11:04,884 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:11:04,884 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 7885 transitions. [2022-03-19 07:11:04,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-19 07:11:04,885 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:11:04,885 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:11:04,885 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-19 07:11:04,885 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:11:04,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:11:04,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1377173641, now seen corresponding path program 1 times [2022-03-19 07:11:04,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:11:04,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1130678484] [2022-03-19 07:11:04,886 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:11:04,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1377173641, now seen corresponding path program 2 times [2022-03-19 07:11:04,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:11:04,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383232345] [2022-03-19 07:11:04,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:11:04,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:11:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:05,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:11:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:05,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:11:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:05,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:11:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:05,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:11:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:05,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:11:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:05,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:11:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:05,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 07:11:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:05,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 07:11:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:05,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 07:11:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:05,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-19 07:11:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:05,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:11:05,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:11:05,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383232345] [2022-03-19 07:11:05,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383232345] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:11:05,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:11:05,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 07:11:05,456 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:11:05,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1130678484] [2022-03-19 07:11:05,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1130678484] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:11:05,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:11:05,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 07:11:05,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011253925] [2022-03-19 07:11:05,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:11:05,457 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 07:11:05,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:11:05,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 07:11:05,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-19 07:11:05,458 INFO L87 Difference]: Start difference. First operand 5577 states and 7885 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-03-19 07:11:17,081 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:11:24,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:11:24,330 INFO L93 Difference]: Finished difference Result 6539 states and 9478 transitions. [2022-03-19 07:11:24,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-19 07:11:24,331 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2022-03-19 07:11:24,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:11:24,342 INFO L225 Difference]: With dead ends: 6539 [2022-03-19 07:11:24,342 INFO L226 Difference]: Without dead ends: 6523 [2022-03-19 07:11:24,343 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2022-03-19 07:11:24,343 INFO L912 BasicCegarLoop]: 666 mSDtfsCounter, 1947 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 5297 mSolverCounterSat, 829 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1986 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 6127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 829 IncrementalHoareTripleChecker+Valid, 5297 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-03-19 07:11:24,344 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1986 Valid, 1955 Invalid, 6127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [829 Valid, 5297 Invalid, 1 Unknown, 0 Unchecked, 13.9s Time] [2022-03-19 07:11:24,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6523 states. [2022-03-19 07:11:26,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6523 to 5577. [2022-03-19 07:11:26,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5577 states, 4480 states have (on average 1.410044642857143) internal successors, (6317), 4586 states have internal predecessors, (6317), 667 states have call successors, (667), 345 states have call predecessors, (667), 429 states have return successors, (901), 667 states have call predecessors, (901), 649 states have call successors, (901) [2022-03-19 07:11:26,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 7885 transitions. [2022-03-19 07:11:26,826 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 7885 transitions. Word has length 88 [2022-03-19 07:11:26,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:11:26,827 INFO L478 AbstractCegarLoop]: Abstraction has 5577 states and 7885 transitions. [2022-03-19 07:11:26,827 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (12), 10 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-03-19 07:11:26,827 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 7885 transitions. [2022-03-19 07:11:26,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-03-19 07:11:26,828 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:11:26,828 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:11:26,828 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-03-19 07:11:26,828 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:11:26,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:11:26,829 INFO L85 PathProgramCache]: Analyzing trace with hash -701044102, now seen corresponding path program 1 times [2022-03-19 07:11:26,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:11:26,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1927798265] [2022-03-19 07:11:26,829 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:11:26,829 INFO L85 PathProgramCache]: Analyzing trace with hash -701044102, now seen corresponding path program 2 times [2022-03-19 07:11:26,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:11:26,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603600733] [2022-03-19 07:11:26,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:11:26,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:11:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:27,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:11:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:27,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:11:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:27,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:11:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:27,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:11:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:27,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:11:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:27,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:11:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:27,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-19 07:11:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:27,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-19 07:11:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:27,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:11:27,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:11:27,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603600733] [2022-03-19 07:11:27,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603600733] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:11:27,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:11:27,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-19 07:11:27,332 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:11:27,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1927798265] [2022-03-19 07:11:27,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1927798265] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:11:27,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:11:27,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-19 07:11:27,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251066419] [2022-03-19 07:11:27,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:11:27,332 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-19 07:11:27,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:11:27,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-19 07:11:27,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-03-19 07:11:27,333 INFO L87 Difference]: Start difference. First operand 5577 states and 7885 transitions. Second operand has 17 states, 17 states have (on average 4.0) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:11:34,737 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:11:41,254 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:11:49,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:11:49,385 INFO L93 Difference]: Finished difference Result 6506 states and 9411 transitions. [2022-03-19 07:11:49,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-19 07:11:49,385 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 86 [2022-03-19 07:11:49,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:11:49,397 INFO L225 Difference]: With dead ends: 6506 [2022-03-19 07:11:49,397 INFO L226 Difference]: Without dead ends: 6483 [2022-03-19 07:11:49,398 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2022-03-19 07:11:49,398 INFO L912 BasicCegarLoop]: 655 mSDtfsCounter, 1489 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 7780 mSolverCounterSat, 628 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 8409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 628 IncrementalHoareTripleChecker+Valid, 7780 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-03-19 07:11:49,398 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1528 Valid, 2408 Invalid, 8409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [628 Valid, 7780 Invalid, 1 Unknown, 0 Unchecked, 17.2s Time] [2022-03-19 07:11:49,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6483 states. [2022-03-19 07:11:51,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6483 to 5573. [2022-03-19 07:11:51,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5573 states, 4477 states have (on average 1.4100960464596828) internal successors, (6313), 4583 states have internal predecessors, (6313), 666 states have call successors, (666), 345 states have call predecessors, (666), 429 states have return successors, (900), 666 states have call predecessors, (900), 648 states have call successors, (900) [2022-03-19 07:11:51,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5573 states to 5573 states and 7879 transitions. [2022-03-19 07:11:51,936 INFO L78 Accepts]: Start accepts. Automaton has 5573 states and 7879 transitions. Word has length 86 [2022-03-19 07:11:51,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:11:51,936 INFO L478 AbstractCegarLoop]: Abstraction has 5573 states and 7879 transitions. [2022-03-19 07:11:51,937 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 07:11:51,937 INFO L276 IsEmpty]: Start isEmpty. Operand 5573 states and 7879 transitions. [2022-03-19 07:11:51,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-03-19 07:11:51,938 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:11:51,938 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:11:51,938 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-03-19 07:11:51,938 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:11:51,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:11:51,938 INFO L85 PathProgramCache]: Analyzing trace with hash -2037943977, now seen corresponding path program 1 times [2022-03-19 07:11:51,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:11:51,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [939147457] [2022-03-19 07:11:51,939 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:11:51,939 INFO L85 PathProgramCache]: Analyzing trace with hash -2037943977, now seen corresponding path program 2 times [2022-03-19 07:11:51,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:11:51,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841383720] [2022-03-19 07:11:51,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:11:51,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:11:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:52,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:11:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:52,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:11:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:52,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 07:11:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:52,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 07:11:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:52,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:11:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:52,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 07:11:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:52,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 07:11:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:52,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 07:11:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:11:52,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:11:52,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:11:52,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841383720] [2022-03-19 07:11:52,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841383720] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:11:52,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:11:52,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:11:52,318 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:11:52,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [939147457] [2022-03-19 07:11:52,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [939147457] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:11:52,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:11:52,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 07:11:52,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425362399] [2022-03-19 07:11:52,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:11:52,319 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 07:11:52,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:11:52,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 07:11:52,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-19 07:11:52,319 INFO L87 Difference]: Start difference. First operand 5573 states and 7879 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 07:11:57,344 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []