/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-d966a43 [2022-01-31 22:25:05,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 22:25:05,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 22:25:05,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 22:25:05,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 22:25:05,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 22:25:05,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 22:25:05,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 22:25:05,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 22:25:05,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 22:25:05,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 22:25:05,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 22:25:05,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 22:25:05,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 22:25:05,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 22:25:05,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 22:25:05,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 22:25:05,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 22:25:05,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 22:25:05,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 22:25:05,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 22:25:05,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 22:25:05,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 22:25:05,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 22:25:05,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 22:25:05,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 22:25:05,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 22:25:05,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 22:25:05,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 22:25:05,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 22:25:05,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 22:25:05,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 22:25:05,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 22:25:05,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 22:25:05,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 22:25:05,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 22:25:05,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 22:25:05,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 22:25:05,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 22:25:05,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 22:25:05,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 22:25:05,177 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 22:25:05,195 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 22:25:05,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 22:25:05,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 22:25:05,197 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 22:25:05,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 22:25:05,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 22:25:05,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 22:25:05,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 22:25:05,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 22:25:05,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 22:25:05,198 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 22:25:05,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 22:25:05,199 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 22:25:05,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 22:25:05,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 22:25:05,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 22:25:05,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 22:25:05,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 22:25:05,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:25:05,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 22:25:05,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 22:25:05,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 22:25:05,200 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 22:25:05,200 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 22:25:05,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 22:25:05,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 22:25:05,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 22:25:05,503 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 22:25:05,504 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 22:25:05,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c [2022-01-31 22:25:05,570 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf0f8fe70/17b50c7d468043d980225ebc7f8e5ea3/FLAGebb3e7bfe [2022-01-31 22:25:06,181 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 22:25:06,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c [2022-01-31 22:25:06,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf0f8fe70/17b50c7d468043d980225ebc7f8e5ea3/FLAGebb3e7bfe [2022-01-31 22:25:06,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf0f8fe70/17b50c7d468043d980225ebc7f8e5ea3 [2022-01-31 22:25:06,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 22:25:06,603 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 22:25:06,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 22:25:06,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 22:25:06,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 22:25:06,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:25:06" (1/1) ... [2022-01-31 22:25:06,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35fad95a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:25:06, skipping insertion in model container [2022-01-31 22:25:06,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:25:06" (1/1) ... [2022-01-31 22:25:06,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 22:25:06,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 22:25:07,116 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] [2022-01-31 22:25:07,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:25:07,434 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 22:25:07,510 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] [2022-01-31 22:25:07,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:25:07,724 INFO L208 MainTranslator]: Completed translation [2022-01-31 22:25:07,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:25:07 WrapperNode [2022-01-31 22:25:07,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 22:25:07,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 22:25:07,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 22:25:07,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 22:25:07,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:25:07" (1/1) ... [2022-01-31 22:25:07,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:25:07" (1/1) ... [2022-01-31 22:25:07,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:25:07" (1/1) ... [2022-01-31 22:25:07,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:25:07" (1/1) ... [2022-01-31 22:25:07,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:25:07" (1/1) ... [2022-01-31 22:25:07,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:25:07" (1/1) ... [2022-01-31 22:25:07,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:25:07" (1/1) ... [2022-01-31 22:25:07,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 22:25:07,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 22:25:07,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 22:25:07,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 22:25:07,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:25:07" (1/1) ... [2022-01-31 22:25:07,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:25:07,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 22:25:07,972 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) [2022-01-31 22:25:07,991 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 [2022-01-31 22:25:08,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 22:25:08,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 22:25:08,000 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 22:25:08,000 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-01-31 22:25:08,001 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-01-31 22:25:08,001 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-01-31 22:25:08,001 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-01-31 22:25:08,002 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-01-31 22:25:08,002 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyUnload [2022-01-31 22:25:08,002 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyAddDevice [2022-01-31 22:25:08,002 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConfigCallBack [2022-01-31 22:25:08,002 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-01-31 22:25:08,002 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-01-31 22:25:08,002 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-01-31 22:25:08,003 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-01-31 22:25:08,004 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-01-31 22:25:08,004 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-01-31 22:25:08,004 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-01-31 22:25:08,004 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPower [2022-01-31 22:25:08,004 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyReadWrite [2022-01-31 22:25:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInterpretError [2022-01-31 22:25:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFinishOperation [2022-01-31 22:25:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure FlStartDrive [2022-01-31 22:25:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDatarateSpecifyConfigure [2022-01-31 22:25:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure FlRecalibrateDrive [2022-01-31 22:25:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDetermineMediaType [2022-01-31 22:25:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAllocateIoBuffer [2022-01-31 22:25:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFreeIoBuffer [2022-01-31 22:25:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyThread [2022-01-31 22:25:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConsolidateMediaTypeWithBootSector [2022-01-31 22:25:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckBootSector [2022-01-31 22:25:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWriteTrack [2022-01-31 22:25:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWrite [2022-01-31 22:25:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFormat [2022-01-31 22:25:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2022-01-31 22:25:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure FlIssueCommand [2022-01-31 22:25:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInitializeControllerHardware [2022-01-31 22:25:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-01-31 22:25:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure FlHdbit [2022-01-31 22:25:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-01-31 22:25:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCancelQueuedRequest [2022-01-31 22:25:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-01-31 22:25:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-01-31 22:25:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 22:25:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-01-31 22:25:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-01-31 22:25:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-01-31 22:25:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-01-31 22:25:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-01-31 22:25:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-01-31 22:25:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-01-31 22:25:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-01-31 22:25:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-01-31 22:25:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-01-31 22:25:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-01-31 22:25:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-01-31 22:25:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-01-31 22:25:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-01-31 22:25:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-01-31 22:25:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-01-31 22:25:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-01-31 22:25:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-01-31 22:25:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-01-31 22:25:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-01-31 22:25:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-01-31 22:25:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-01-31 22:25:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-01-31 22:25:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-01-31 22:25:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-01-31 22:25:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-01-31 22:25:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-01-31 22:25:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-01-31 22:25:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-01-31 22:25:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-01-31 22:25:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-01-31 22:25:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-01-31 22:25:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-01-31 22:25:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-01-31 22:25:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-01-31 22:25:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-01-31 22:25:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-01-31 22:25:08,009 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-01-31 22:25:08,009 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-01-31 22:25:08,009 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-01-31 22:25:08,009 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-01-31 22:25:08,010 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-01-31 22:25:08,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-01-31 22:25:08,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-01-31 22:25:08,010 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-01-31 22:25:08,010 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-01-31 22:25:08,010 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-01-31 22:25:08,010 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-01-31 22:25:08,010 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-01-31 22:25:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-01-31 22:25:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-01-31 22:25:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-01-31 22:25:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-01-31 22:25:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-01-31 22:25:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-01-31 22:25:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-01-31 22:25:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-01-31 22:25:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-01-31 22:25:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-01-31 22:25:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-01-31 22:25:08,011 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 22:25:08,011 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 22:25:08,011 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 22:25:08,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 22:25:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-01-31 22:25:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-01-31 22:25:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 22:25:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-01-31 22:25:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-01-31 22:25:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2022-01-31 22:25:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure swprintf [2022-01-31 22:25:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-01-31 22:25:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-01-31 22:25:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-01-31 22:25:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-01-31 22:25:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-01-31 22:25:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-01-31 22:25:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-01-31 22:25:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-01-31 22:25:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-01-31 22:25:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-01-31 22:25:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-01-31 22:25:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-01-31 22:25:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 22:25:08,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 22:25:08,014 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-01-31 22:25:08,014 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-01-31 22:25:08,014 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-01-31 22:25:08,014 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-01-31 22:25:08,014 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-01-31 22:25:08,014 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-01-31 22:25:08,014 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-01-31 22:25:08,014 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-01-31 22:25:08,015 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-01-31 22:25:08,015 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-01-31 22:25:08,016 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-01-31 22:25:08,016 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-01-31 22:25:08,018 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-01-31 22:25:08,018 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-01-31 22:25:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-01-31 22:25:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-01-31 22:25:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-01-31 22:25:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-01-31 22:25:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-01-31 22:25:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-01-31 22:25:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-01-31 22:25:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-01-31 22:25:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-01-31 22:25:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-01-31 22:25:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-01-31 22:25:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-01-31 22:25:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-01-31 22:25:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-01-31 22:25:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-01-31 22:25:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-01-31 22:25:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-01-31 22:25:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-01-31 22:25:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-01-31 22:25:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-01-31 22:25:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-01-31 22:25:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-01-31 22:25:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-01-31 22:25:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-01-31 22:25:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-01-31 22:25:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-01-31 22:25:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-01-31 22:25:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-01-31 22:25:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-01-31 22:25:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-01-31 22:25:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-01-31 22:25:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-01-31 22:25:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-01-31 22:25:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-01-31 22:25:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyUnload [2022-01-31 22:25:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure FlConfigCallBack [2022-01-31 22:25:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure FlInitializeControllerHardware [2022-01-31 22:25:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-01-31 22:25:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-01-31 22:25:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyReadWrite [2022-01-31 22:25:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure FlRecalibrateDrive [2022-01-31 22:25:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure FlDatarateSpecifyConfigure [2022-01-31 22:25:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure FlStartDrive [2022-01-31 22:25:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure FlFinishOperation [2022-01-31 22:25:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure FlDetermineMediaType [2022-01-31 22:25:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyThread [2022-01-31 22:25:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWrite [2022-01-31 22:25:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure FlFormat [2022-01-31 22:25:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure FlIssueCommand [2022-01-31 22:25:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2022-01-31 22:25:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-01-31 22:25:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure FlInterpretError [2022-01-31 22:25:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure FlAllocateIoBuffer [2022-01-31 22:25:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure FlFreeIoBuffer [2022-01-31 22:25:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure FlConsolidateMediaTypeWithBootSector [2022-01-31 22:25:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckBootSector [2022-01-31 22:25:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWriteTrack [2022-01-31 22:25:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-01-31 22:25:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyAddDevice [2022-01-31 22:25:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-01-31 22:25:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPower [2022-01-31 22:25:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-01-31 22:25:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-01-31 22:25:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-01-31 22:25:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-01-31 22:25:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCancelQueuedRequest [2022-01-31 22:25:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-01-31 22:25:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure FlHdbit [2022-01-31 22:25:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-01-31 22:25:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-01-31 22:25:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-31 22:25:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-31 22:25:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 22:25:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 22:25:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-01-31 22:25:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-01-31 22:25:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-01-31 22:25:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-31 22:25:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-01-31 22:25:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 22:25:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-01-31 22:25:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-01-31 22:25:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 22:25:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 22:25:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 22:25:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-01-31 22:25:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-01-31 22:25:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-01-31 22:25:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-01-31 22:25:08,597 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 22:25:08,601 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 22:25:08,628 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:08,650 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:25:08,650 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:08,651 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:08,656 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:25:08,656 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:10,270 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:10,274 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:25:10,274 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:10,275 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:10,281 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:25:10,281 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:10,283 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:10,288 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:25:10,288 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:10,315 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:10,320 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:25:10,320 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:10,320 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:10,327 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:25:10,327 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:10,328 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:10,335 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:25:10,335 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:10,382 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:10,434 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-01-31 22:25:10,434 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-01-31 22:25:10,485 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:10,489 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:25:10,489 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:10,489 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:10,492 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:25:10,492 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:10,492 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:10,498 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:25:10,498 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:10,506 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:10,510 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:25:10,510 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:10,510 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:10,513 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:25:10,514 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:14,789 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:14,802 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-01-31 22:25:14,802 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-01-31 22:25:14,858 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:15,204 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-01-31 22:25:15,204 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-01-31 22:25:15,446 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:15,449 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:25:15,449 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:15,506 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:15,528 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-01-31 22:25:15,528 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-01-31 22:25:15,530 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:15,649 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-01-31 22:25:15,650 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-01-31 22:25:15,650 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:15,691 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-01-31 22:25:15,691 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-01-31 22:25:26,116 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:26,119 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:25:26,119 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:26,201 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:26,205 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:25:26,205 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:26,219 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:28,508 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-01-31 22:25:28,509 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-01-31 22:25:28,543 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:28,707 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-01-31 22:25:28,707 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-01-31 22:25:28,708 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:28,721 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-01-31 22:25:28,721 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-01-31 22:25:28,721 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:28,748 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-01-31 22:25:28,748 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-01-31 22:25:28,751 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:28,759 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-01-31 22:25:28,759 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-01-31 22:25:28,798 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:28,801 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:25:28,802 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:28,810 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:28,814 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 22:25:28,814 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 22:25:28,815 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:28,872 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume !false; [2022-01-31 22:25:28,873 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume false; [2022-01-31 22:25:28,905 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 22:25:31,297 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2022-01-31 22:25:31,298 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2022-01-31 22:25:31,361 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 22:25:31,379 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 22:25:31,379 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2022-01-31 22:25:31,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:25:31 BoogieIcfgContainer [2022-01-31 22:25:31,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 22:25:31,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 22:25:31,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 22:25:31,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 22:25:31,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:25:06" (1/3) ... [2022-01-31 22:25:31,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b9e2b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:25:31, skipping insertion in model container [2022-01-31 22:25:31,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:25:07" (2/3) ... [2022-01-31 22:25:31,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b9e2b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:25:31, skipping insertion in model container [2022-01-31 22:25:31,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:25:31" (3/3) ... [2022-01-31 22:25:31,389 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-3.c [2022-01-31 22:25:31,392 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 22:25:31,392 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 22:25:31,424 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 22:25:31,431 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-01-31 22:25:31,431 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 22:25:31,458 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) [2022-01-31 22:25:31,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-31 22:25:31,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:25:31,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:25:31,465 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:25:31,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:25:31,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1208806804, now seen corresponding path program 1 times [2022-01-31 22:25:31,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:25:31,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5694858] [2022-01-31 22:25:31,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:25:31,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:25:31,547 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:25:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:32,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:25:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:32,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:25:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:32,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:25:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:32,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:25:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:32,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:25:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:32,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:25:32,228 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:25:32,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5694858] [2022-01-31 22:25:32,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [5694858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:25:32,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:25:32,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 22:25:32,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285244750] [2022-01-31 22:25:32,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:25:32,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 22:25:32,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:25:32,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 22:25:32,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-31 22:25:32,260 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) [2022-01-31 22:25:36,979 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 [] [2022-01-31 22:25:41,788 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 [] [2022-01-31 22:25:42,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:25:42,904 INFO L93 Difference]: Finished difference Result 1453 states and 2231 transitions. [2022-01-31 22:25:42,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 22:25:42,906 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 [2022-01-31 22:25:42,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:25:42,918 INFO L225 Difference]: With dead ends: 1453 [2022-01-31 22:25:42,918 INFO L226 Difference]: Without dead ends: 858 [2022-01-31 22:25:42,925 INFO L932 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 [2022-01-31 22:25:42,927 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 1345 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 3101 mSolverCounterSat, 617 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 3720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 3101 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-01-31 22:25:42,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1379 Valid, 1283 Invalid, 3720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [617 Valid, 3101 Invalid, 2 Unknown, 0 Unchecked, 9.7s Time] [2022-01-31 22:25:42,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2022-01-31 22:25:43,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 670. [2022-01-31 22:25:43,031 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) [2022-01-31 22:25:43,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 931 transitions. [2022-01-31 22:25:43,037 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 931 transitions. Word has length 37 [2022-01-31 22:25:43,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:25:43,037 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 931 transitions. [2022-01-31 22:25:43,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 22:25:43,037 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 931 transitions. [2022-01-31 22:25:43,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-31 22:25:43,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:25:43,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:25:43,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 22:25:43,040 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:25:43,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:25:43,041 INFO L85 PathProgramCache]: Analyzing trace with hash 171558063, now seen corresponding path program 1 times [2022-01-31 22:25:43,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:25:43,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134096904] [2022-01-31 22:25:43,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:25:43,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:25:43,055 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:25:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:43,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:25:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:43,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:25:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:43,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:25:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:43,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:25:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:43,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:25:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:43,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:25:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:43,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:25:43,518 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:25:43,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134096904] [2022-01-31 22:25:43,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2134096904] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:25:43,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:25:43,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 22:25:43,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076887203] [2022-01-31 22:25:43,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:25:43,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 22:25:43,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:25:43,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 22:25:43,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-31 22:25:43,520 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) [2022-01-31 22:25:47,760 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 [] [2022-01-31 22:25:51,931 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 [] [2022-01-31 22:25:55,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:25:55,870 INFO L93 Difference]: Finished difference Result 1951 states and 2856 transitions. [2022-01-31 22:25:55,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 22:25:55,871 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 [2022-01-31 22:25:55,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:25:55,878 INFO L225 Difference]: With dead ends: 1951 [2022-01-31 22:25:55,878 INFO L226 Difference]: Without dead ends: 1471 [2022-01-31 22:25:55,880 INFO L932 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 [2022-01-31 22:25:55,881 INFO L933 BasicCegarLoop]: 940 mSDtfsCounter, 3479 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 3509 mSolverCounterSat, 1401 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3520 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 4912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1401 IncrementalHoareTripleChecker+Valid, 3509 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-01-31 22:25:55,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3520 Valid, 1665 Invalid, 4912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1401 Valid, 3509 Invalid, 2 Unknown, 0 Unchecked, 11.3s Time] [2022-01-31 22:25:55,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2022-01-31 22:25:55,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1230. [2022-01-31 22:25:55,997 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) [2022-01-31 22:25:56,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1762 transitions. [2022-01-31 22:25:56,003 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1762 transitions. Word has length 42 [2022-01-31 22:25:56,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:25:56,003 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 1762 transitions. [2022-01-31 22:25:56,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-31 22:25:56,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1762 transitions. [2022-01-31 22:25:56,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-31 22:25:56,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:25:56,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:25:56,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 22:25:56,012 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:25:56,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:25:56,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1220689, now seen corresponding path program 1 times [2022-01-31 22:25:56,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:25:56,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124947717] [2022-01-31 22:25:56,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:25:56,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:25:56,020 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:25:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:56,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:25:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:56,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:25:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:56,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:25:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:56,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:25:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:56,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:25:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:56,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:25:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:56,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 22:25:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:25:56,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:25:56,578 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:25:56,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124947717] [2022-01-31 22:25:56,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1124947717] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:25:56,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:25:56,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 22:25:56,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130574915] [2022-01-31 22:25:56,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:25:56,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 22:25:56,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:25:56,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 22:25:56,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-31 22:25:56,580 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) [2022-01-31 22:26:02,115 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:05,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:26:05,299 INFO L93 Difference]: Finished difference Result 2279 states and 3379 transitions. [2022-01-31 22:26:05,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 22:26:05,303 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 [2022-01-31 22:26:05,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:26:05,312 INFO L225 Difference]: With dead ends: 2279 [2022-01-31 22:26:05,312 INFO L226 Difference]: Without dead ends: 2260 [2022-01-31 22:26:05,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-01-31 22:26:05,317 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 3868 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 2853 mSolverCounterSat, 1490 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3928 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 4344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1490 IncrementalHoareTripleChecker+Valid, 2853 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-01-31 22:26:05,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3928 Valid, 1301 Invalid, 4344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1490 Valid, 2853 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-01-31 22:26:05,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2022-01-31 22:26:05,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 1905. [2022-01-31 22:26:05,560 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) [2022-01-31 22:26:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2769 transitions. [2022-01-31 22:26:05,567 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2769 transitions. Word has length 54 [2022-01-31 22:26:05,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:26:05,568 INFO L470 AbstractCegarLoop]: Abstraction has 1905 states and 2769 transitions. [2022-01-31 22:26:05,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-31 22:26:05,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2769 transitions. [2022-01-31 22:26:05,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-31 22:26:05,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:26:05,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:26:05,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 22:26:05,569 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:26:05,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:26:05,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1955103331, now seen corresponding path program 1 times [2022-01-31 22:26:05,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:26:05,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358552696] [2022-01-31 22:26:05,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:26:05,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:26:05,580 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:26:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:05,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:26:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:05,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:26:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:05,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:26:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:06,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:26:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:06,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:26:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:06,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:26:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:26:06,115 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:26:06,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358552696] [2022-01-31 22:26:06,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [358552696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:26:06,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:26:06,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 22:26:06,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361736093] [2022-01-31 22:26:06,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:26:06,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 22:26:06,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:26:06,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 22:26:06,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-31 22:26:06,119 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) [2022-01-31 22:26:12,106 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 [] [2022-01-31 22:26:13,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:26:13,991 INFO L93 Difference]: Finished difference Result 2254 states and 3363 transitions. [2022-01-31 22:26:13,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 22:26:13,992 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 [2022-01-31 22:26:13,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:26:14,027 INFO L225 Difference]: With dead ends: 2254 [2022-01-31 22:26:14,027 INFO L226 Difference]: Without dead ends: 2250 [2022-01-31 22:26:14,028 INFO L932 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 [2022-01-31 22:26:14,031 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 1720 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 3121 mSolverCounterSat, 754 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s 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, 7.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:26:14,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 1278 Invalid, 3876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [754 Valid, 3121 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-01-31 22:26:14,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2022-01-31 22:26:14,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 1942. [2022-01-31 22:26:14,232 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) [2022-01-31 22:26:14,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 2820 transitions. [2022-01-31 22:26:14,238 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 2820 transitions. Word has length 55 [2022-01-31 22:26:14,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:26:14,238 INFO L470 AbstractCegarLoop]: Abstraction has 1942 states and 2820 transitions. [2022-01-31 22:26:14,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-31 22:26:14,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 2820 transitions. [2022-01-31 22:26:14,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-31 22:26:14,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:26:14,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:26:14,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 22:26:14,240 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:26:14,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:26:14,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1599289490, now seen corresponding path program 1 times [2022-01-31 22:26:14,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:26:14,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020924755] [2022-01-31 22:26:14,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:26:14,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:26:14,250 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:26:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:14,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:26:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:14,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:26:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:14,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:26:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:14,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:26:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:14,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:26:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:14,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:26:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:14,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:26:14,629 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:26:14,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020924755] [2022-01-31 22:26:14,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2020924755] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:26:14,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:26:14,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 22:26:14,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027956922] [2022-01-31 22:26:14,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:26:14,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 22:26:14,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:26:14,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 22:26:14,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-31 22:26:14,630 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) [2022-01-31 22:26:18,940 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 [] [2022-01-31 22:26:21,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:25,140 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:28,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:32,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:26:32,136 INFO L93 Difference]: Finished difference Result 3881 states and 5849 transitions. [2022-01-31 22:26:32,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 22:26:32,137 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 [2022-01-31 22:26:32,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:26:32,150 INFO L225 Difference]: With dead ends: 3881 [2022-01-31 22:26:32,150 INFO L226 Difference]: Without dead ends: 3878 [2022-01-31 22:26:32,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-01-31 22:26:32,152 INFO L933 BasicCegarLoop]: 1153 mSDtfsCounter, 2146 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 4384 mSolverCounterSat, 912 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2192 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 5300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 912 IncrementalHoareTripleChecker+Valid, 4384 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:26:32,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2192 Valid, 1874 Invalid, 5300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [912 Valid, 4384 Invalid, 4 Unknown, 0 Unchecked, 16.1s Time] [2022-01-31 22:26:32,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2022-01-31 22:26:32,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3105. [2022-01-31 22:26:32,572 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) [2022-01-31 22:26:32,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3105 states to 3105 states and 4524 transitions. [2022-01-31 22:26:32,581 INFO L78 Accepts]: Start accepts. Automaton has 3105 states and 4524 transitions. Word has length 55 [2022-01-31 22:26:32,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:26:32,582 INFO L470 AbstractCegarLoop]: Abstraction has 3105 states and 4524 transitions. [2022-01-31 22:26:32,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-31 22:26:32,582 INFO L276 IsEmpty]: Start isEmpty. Operand 3105 states and 4524 transitions. [2022-01-31 22:26:32,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-31 22:26:32,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:26:32,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:26:32,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 22:26:32,583 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:26:32,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:26:32,583 INFO L85 PathProgramCache]: Analyzing trace with hash 2095199445, now seen corresponding path program 1 times [2022-01-31 22:26:32,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:26:32,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784621886] [2022-01-31 22:26:32,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:26:32,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:26:32,592 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:26:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:32,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:26:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:32,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:26:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:33,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:26:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:33,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:26:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:33,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:26:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:33,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:26:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:33,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:26:33,175 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:26:33,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784621886] [2022-01-31 22:26:33,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [784621886] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:26:33,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:26:33,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 22:26:33,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275955430] [2022-01-31 22:26:33,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:26:33,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 22:26:33,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:26:33,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 22:26:33,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-01-31 22:26:33,177 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) [2022-01-31 22:26:38,963 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 [] [2022-01-31 22:26:41,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:45,480 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:26:53,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:26:53,578 INFO L93 Difference]: Finished difference Result 6653 states and 9861 transitions. [2022-01-31 22:26:53,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-31 22:26:53,578 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 [2022-01-31 22:26:53,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:26:53,610 INFO L225 Difference]: With dead ends: 6653 [2022-01-31 22:26:53,610 INFO L226 Difference]: Without dead ends: 3833 [2022-01-31 22:26:53,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 22:26:53,620 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 5008 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 6692 mSolverCounterSat, 2194 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5053 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 8889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2194 IncrementalHoareTripleChecker+Valid, 6692 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2022-01-31 22:26:53,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5053 Valid, 2055 Invalid, 8889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2194 Valid, 6692 Invalid, 3 Unknown, 0 Unchecked, 17.4s Time] [2022-01-31 22:26:53,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2022-01-31 22:26:54,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 3099. [2022-01-31 22:26:54,077 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) [2022-01-31 22:26:54,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 4510 transitions. [2022-01-31 22:26:54,085 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 4510 transitions. Word has length 56 [2022-01-31 22:26:54,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:26:54,085 INFO L470 AbstractCegarLoop]: Abstraction has 3099 states and 4510 transitions. [2022-01-31 22:26:54,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 22:26:54,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 4510 transitions. [2022-01-31 22:26:54,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-31 22:26:54,086 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:26:54,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:26:54,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 22:26:54,087 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:26:54,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:26:54,087 INFO L85 PathProgramCache]: Analyzing trace with hash 2082718779, now seen corresponding path program 1 times [2022-01-31 22:26:54,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:26:54,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004482579] [2022-01-31 22:26:54,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:26:54,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:26:54,097 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:26:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:54,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:26:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:54,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:26:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:54,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:26:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:54,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:26:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:54,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:26:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:54,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:26:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:54,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 22:26:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:54,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:26:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:26:54,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:26:54,531 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:26:54,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004482579] [2022-01-31 22:26:54,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1004482579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:26:54,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:26:54,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 22:26:54,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236590352] [2022-01-31 22:26:54,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:26:54,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 22:26:54,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:26:54,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 22:26:54,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-01-31 22:26:54,533 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) [2022-01-31 22:27:01,790 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 [] [2022-01-31 22:27:07,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:27:07,274 INFO L93 Difference]: Finished difference Result 4462 states and 6724 transitions. [2022-01-31 22:27:07,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 22:27:07,274 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 [2022-01-31 22:27:07,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:27:07,290 INFO L225 Difference]: With dead ends: 4462 [2022-01-31 22:27:07,290 INFO L226 Difference]: Without dead ends: 4457 [2022-01-31 22:27:07,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2022-01-31 22:27:07,293 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 2954 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 4423 mSolverCounterSat, 1423 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2988 SdHoareTripleChecker+Valid, 2028 SdHoareTripleChecker+Invalid, 5847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1423 IncrementalHoareTripleChecker+Valid, 4423 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:27:07,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2988 Valid, 2028 Invalid, 5847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1423 Valid, 4423 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2022-01-31 22:27:07,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4457 states. [2022-01-31 22:27:07,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4457 to 3755. [2022-01-31 22:27:07,830 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) [2022-01-31 22:27:07,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5489 transitions. [2022-01-31 22:27:07,840 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5489 transitions. Word has length 56 [2022-01-31 22:27:07,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:27:07,840 INFO L470 AbstractCegarLoop]: Abstraction has 3755 states and 5489 transitions. [2022-01-31 22:27:07,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-01-31 22:27:07,841 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5489 transitions. [2022-01-31 22:27:07,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-31 22:27:07,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:27:07,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:27:07,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 22:27:07,843 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:27:07,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:27:07,844 INFO L85 PathProgramCache]: Analyzing trace with hash 590370335, now seen corresponding path program 1 times [2022-01-31 22:27:07,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:27:07,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796646543] [2022-01-31 22:27:07,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:27:07,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:27:07,854 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:27:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:08,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:27:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:08,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:27:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:08,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:27:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:08,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:27:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:08,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:27:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:08,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:27:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:08,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 22:27:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:08,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:27:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:08,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:27:08,434 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:27:08,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796646543] [2022-01-31 22:27:08,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1796646543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:27:08,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:27:08,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 22:27:08,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34124801] [2022-01-31 22:27:08,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:27:08,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 22:27:08,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:27:08,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 22:27:08,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-01-31 22:27:08,436 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) [2022-01-31 22:27:16,548 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 [] [2022-01-31 22:27:21,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:27:21,904 INFO L93 Difference]: Finished difference Result 4457 states and 6713 transitions. [2022-01-31 22:27:21,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 22:27:21,931 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 [2022-01-31 22:27:21,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:27:21,949 INFO L225 Difference]: With dead ends: 4457 [2022-01-31 22:27:21,949 INFO L226 Difference]: Without dead ends: 4451 [2022-01-31 22:27:21,951 INFO L932 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 [2022-01-31 22:27:21,952 INFO L933 BasicCegarLoop]: 1033 mSDtfsCounter, 4616 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 4435 mSolverCounterSat, 2197 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4664 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, 10.8s IncrementalHoareTripleChecker+Time [2022-01-31 22:27:21,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4664 Valid, 1836 Invalid, 6633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2197 Valid, 4435 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2022-01-31 22:27:21,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2022-01-31 22:27:22,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 3755. [2022-01-31 22:27:22,602 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) [2022-01-31 22:27:22,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5488 transitions. [2022-01-31 22:27:22,613 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5488 transitions. Word has length 57 [2022-01-31 22:27:22,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:27:22,614 INFO L470 AbstractCegarLoop]: Abstraction has 3755 states and 5488 transitions. [2022-01-31 22:27:22,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 22:27:22,614 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5488 transitions. [2022-01-31 22:27:22,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-31 22:27:22,616 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:27:22,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:27:22,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 22:27:22,616 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:27:22,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:27:22,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1470236357, now seen corresponding path program 1 times [2022-01-31 22:27:22,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:27:22,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849444473] [2022-01-31 22:27:22,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:27:22,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:27:22,626 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:27:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:22,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:27:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:22,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:27:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:22,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:27:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:22,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:27:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:23,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:27:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:23,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:27:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:23,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 22:27:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:23,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:27:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:23,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:27:23,100 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:27:23,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849444473] [2022-01-31 22:27:23,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [849444473] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:27:23,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:27:23,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 22:27:23,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610053142] [2022-01-31 22:27:23,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:27:23,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 22:27:23,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:27:23,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 22:27:23,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-01-31 22:27:23,102 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) [2022-01-31 22:27:31,666 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 [] [2022-01-31 22:27:37,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:27:37,661 INFO L93 Difference]: Finished difference Result 4453 states and 6707 transitions. [2022-01-31 22:27:37,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 22:27:37,661 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 [2022-01-31 22:27:37,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:27:37,688 INFO L225 Difference]: With dead ends: 4453 [2022-01-31 22:27:37,688 INFO L226 Difference]: Without dead ends: 4447 [2022-01-31 22:27:37,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 22:27:37,692 INFO L933 BasicCegarLoop]: 1031 mSDtfsCounter, 4046 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 4974 mSolverCounterSat, 1939 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4096 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 6914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1939 IncrementalHoareTripleChecker+Valid, 4974 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-01-31 22:27:37,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4096 Valid, 1932 Invalid, 6914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1939 Valid, 4974 Invalid, 1 Unknown, 0 Unchecked, 11.5s Time] [2022-01-31 22:27:37,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4447 states. [2022-01-31 22:27:38,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4447 to 3755. [2022-01-31 22:27:38,342 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) [2022-01-31 22:27:38,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5487 transitions. [2022-01-31 22:27:38,350 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5487 transitions. Word has length 59 [2022-01-31 22:27:38,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:27:38,351 INFO L470 AbstractCegarLoop]: Abstraction has 3755 states and 5487 transitions. [2022-01-31 22:27:38,351 INFO L471 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) [2022-01-31 22:27:38,351 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5487 transitions. [2022-01-31 22:27:38,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-31 22:27:38,353 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:27:38,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:27:38,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-31 22:27:38,353 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:27:38,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:27:38,353 INFO L85 PathProgramCache]: Analyzing trace with hash -449310488, now seen corresponding path program 1 times [2022-01-31 22:27:38,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:27:38,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647130062] [2022-01-31 22:27:38,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:27:38,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:27:38,362 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:27:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:38,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:27:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:38,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:27:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:38,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:27:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:38,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:27:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:38,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:27:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:38,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:27:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:38,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 22:27:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:38,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:27:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:38,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:27:38,825 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:27:38,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647130062] [2022-01-31 22:27:38,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [647130062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:27:38,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:27:38,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 22:27:38,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839158686] [2022-01-31 22:27:38,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:27:38,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 22:27:38,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:27:38,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 22:27:38,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-01-31 22:27:38,826 INFO L87 Difference]: Start difference. First operand 3755 states and 5487 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-01-31 22:27:47,352 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 [] [2022-01-31 22:27:50,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:27:50,546 INFO L93 Difference]: Finished difference Result 4464 states and 6725 transitions. [2022-01-31 22:27:50,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 22:27:50,547 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 [2022-01-31 22:27:50,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:27:50,561 INFO L225 Difference]: With dead ends: 4464 [2022-01-31 22:27:50,561 INFO L226 Difference]: Without dead ends: 4447 [2022-01-31 22:27:50,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-01-31 22:27:50,565 INFO L933 BasicCegarLoop]: 735 mSDtfsCounter, 1847 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 5233 mSolverCounterSat, 824 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 1980 SdHoareTripleChecker+Invalid, 6058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 824 IncrementalHoareTripleChecker+Valid, 5233 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-01-31 22:27:50,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1886 Valid, 1980 Invalid, 6058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [824 Valid, 5233 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2022-01-31 22:27:50,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4447 states. [2022-01-31 22:27:51,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4447 to 3753. [2022-01-31 22:27:51,215 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) [2022-01-31 22:27:51,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3753 states to 3753 states and 5483 transitions. [2022-01-31 22:27:51,225 INFO L78 Accepts]: Start accepts. Automaton has 3753 states and 5483 transitions. Word has length 59 [2022-01-31 22:27:51,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:27:51,225 INFO L470 AbstractCegarLoop]: Abstraction has 3753 states and 5483 transitions. [2022-01-31 22:27:51,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-01-31 22:27:51,225 INFO L276 IsEmpty]: Start isEmpty. Operand 3753 states and 5483 transitions. [2022-01-31 22:27:51,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-31 22:27:51,226 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:27:51,226 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:27:51,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 22:27:51,227 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:27:51,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:27:51,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1749808949, now seen corresponding path program 1 times [2022-01-31 22:27:51,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:27:51,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063035062] [2022-01-31 22:27:51,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:27:51,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:27:51,262 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:27:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:51,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:27:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:51,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:27:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:51,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:27:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:51,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:27:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:51,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:27:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:51,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:27:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:51,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 22:27:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:51,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:27:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:27:51,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:27:51,788 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:27:51,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063035062] [2022-01-31 22:27:51,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2063035062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:27:51,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:27:51,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 22:27:51,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572222960] [2022-01-31 22:27:51,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:27:51,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 22:27:51,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:27:51,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 22:27:51,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-01-31 22:27:51,789 INFO L87 Difference]: Start difference. First operand 3753 states and 5483 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-01-31 22:28:00,189 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 [] [2022-01-31 22:28:03,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:28:03,233 INFO L93 Difference]: Finished difference Result 4462 states and 6721 transitions. [2022-01-31 22:28:03,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 22:28:03,234 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 [2022-01-31 22:28:03,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:28:03,243 INFO L225 Difference]: With dead ends: 4462 [2022-01-31 22:28:03,244 INFO L226 Difference]: Without dead ends: 4440 [2022-01-31 22:28:03,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-01-31 22:28:03,245 INFO L933 BasicCegarLoop]: 719 mSDtfsCounter, 1783 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 5325 mSolverCounterSat, 744 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s 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, 9.9s IncrementalHoareTripleChecker+Time [2022-01-31 22:28:03,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1822 Valid, 1847 Invalid, 6070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [744 Valid, 5325 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2022-01-31 22:28:03,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4440 states. [2022-01-31 22:28:03,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4440 to 3746. [2022-01-31 22:28:03,912 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) [2022-01-31 22:28:03,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3746 states to 3746 states and 5474 transitions. [2022-01-31 22:28:03,921 INFO L78 Accepts]: Start accepts. Automaton has 3746 states and 5474 transitions. Word has length 60 [2022-01-31 22:28:03,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:28:03,921 INFO L470 AbstractCegarLoop]: Abstraction has 3746 states and 5474 transitions. [2022-01-31 22:28:03,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-01-31 22:28:03,921 INFO L276 IsEmpty]: Start isEmpty. Operand 3746 states and 5474 transitions. [2022-01-31 22:28:03,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-31 22:28:03,922 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:28:03,922 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:28:03,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-31 22:28:03,923 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:28:03,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:28:03,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1939971839, now seen corresponding path program 1 times [2022-01-31 22:28:03,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:28:03,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860697772] [2022-01-31 22:28:03,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:28:03,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:28:03,932 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:28:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:04,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:28:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:04,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:28:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:04,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:28:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:04,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:28:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:04,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:28:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:04,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:28:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:04,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 22:28:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:04,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:28:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:04,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:28:04,408 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:28:04,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860697772] [2022-01-31 22:28:04,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1860697772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:28:04,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:28:04,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 22:28:04,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907016943] [2022-01-31 22:28:04,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:28:04,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 22:28:04,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:28:04,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 22:28:04,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-01-31 22:28:04,409 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) [2022-01-31 22:28:10,099 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 [] [2022-01-31 22:28:16,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:28:16,220 INFO L93 Difference]: Finished difference Result 12172 states and 18769 transitions. [2022-01-31 22:28:16,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-31 22:28:16,220 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 [2022-01-31 22:28:16,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:28:16,250 INFO L225 Difference]: With dead ends: 12172 [2022-01-31 22:28:16,250 INFO L226 Difference]: Without dead ends: 8670 [2022-01-31 22:28:16,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-01-31 22:28:16,267 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 4217 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 3263 mSolverCounterSat, 1888 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4276 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 5152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1888 IncrementalHoareTripleChecker+Valid, 3263 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-01-31 22:28:16,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4276 Valid, 1771 Invalid, 5152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1888 Valid, 3263 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2022-01-31 22:28:16,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8670 states. [2022-01-31 22:28:17,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8670 to 7477. [2022-01-31 22:28:17,686 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) [2022-01-31 22:28:17,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7477 states to 7477 states and 11315 transitions. [2022-01-31 22:28:17,738 INFO L78 Accepts]: Start accepts. Automaton has 7477 states and 11315 transitions. Word has length 63 [2022-01-31 22:28:17,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:28:17,739 INFO L470 AbstractCegarLoop]: Abstraction has 7477 states and 11315 transitions. [2022-01-31 22:28:17,739 INFO L471 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) [2022-01-31 22:28:17,739 INFO L276 IsEmpty]: Start isEmpty. Operand 7477 states and 11315 transitions. [2022-01-31 22:28:17,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-31 22:28:17,740 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:28:17,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:28:17,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 22:28:17,740 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:28:17,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:28:17,741 INFO L85 PathProgramCache]: Analyzing trace with hash -858477288, now seen corresponding path program 1 times [2022-01-31 22:28:17,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:28:17,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550719065] [2022-01-31 22:28:17,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:28:17,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:28:17,749 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:28:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:18,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:28:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:18,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:28:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:18,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:28:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:18,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:28:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:18,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:28:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:18,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:28:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:18,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 22:28:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:18,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:28:18,281 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:28:18,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550719065] [2022-01-31 22:28:18,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [550719065] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:28:18,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:28:18,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 22:28:18,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939519767] [2022-01-31 22:28:18,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:28:18,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 22:28:18,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:28:18,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 22:28:18,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-31 22:28:18,283 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) [2022-01-31 22:28:23,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:25,766 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:30,860 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 [] [2022-01-31 22:28:35,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:28:35,418 INFO L93 Difference]: Finished difference Result 15209 states and 23558 transitions. [2022-01-31 22:28:35,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 22:28:35,418 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 [2022-01-31 22:28:35,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:28:35,446 INFO L225 Difference]: With dead ends: 15209 [2022-01-31 22:28:35,446 INFO L226 Difference]: Without dead ends: 8807 [2022-01-31 22:28:35,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-01-31 22:28:35,469 INFO L933 BasicCegarLoop]: 716 mSDtfsCounter, 1504 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 3960 mSolverCounterSat, 642 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 4605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 642 IncrementalHoareTripleChecker+Valid, 3960 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:28:35,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1540 Valid, 1405 Invalid, 4605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [642 Valid, 3960 Invalid, 3 Unknown, 0 Unchecked, 14.1s Time] [2022-01-31 22:28:35,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8807 states. [2022-01-31 22:28:37,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8807 to 7633. [2022-01-31 22:28:37,043 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) [2022-01-31 22:28:37,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7633 states to 7633 states and 11495 transitions. [2022-01-31 22:28:37,065 INFO L78 Accepts]: Start accepts. Automaton has 7633 states and 11495 transitions. Word has length 61 [2022-01-31 22:28:37,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:28:37,066 INFO L470 AbstractCegarLoop]: Abstraction has 7633 states and 11495 transitions. [2022-01-31 22:28:37,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-31 22:28:37,066 INFO L276 IsEmpty]: Start isEmpty. Operand 7633 states and 11495 transitions. [2022-01-31 22:28:37,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-31 22:28:37,067 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:28:37,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:28:37,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-31 22:28:37,067 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:28:37,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:28:37,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1733980064, now seen corresponding path program 1 times [2022-01-31 22:28:37,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:28:37,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991992216] [2022-01-31 22:28:37,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:28:37,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:28:37,077 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:28:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:37,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:28:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:37,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:28:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:37,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:28:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:37,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:28:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:37,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:28:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:37,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 22:28:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:37,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 22:28:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:37,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-31 22:28:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:37,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:28:37,586 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:28:37,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991992216] [2022-01-31 22:28:37,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1991992216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:28:37,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:28:37,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 22:28:37,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664827491] [2022-01-31 22:28:37,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:28:37,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 22:28:37,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:28:37,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 22:28:37,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-01-31 22:28:37,587 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), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 22:28:42,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:44,942 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:49,641 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:28:54,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:28:54,592 INFO L93 Difference]: Finished difference Result 16288 states and 24826 transitions. [2022-01-31 22:28:54,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 22:28:54,593 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), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2022-01-31 22:28:54,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:28:54,632 INFO L225 Difference]: With dead ends: 16288 [2022-01-31 22:28:54,632 INFO L226 Difference]: Without dead ends: 8683 [2022-01-31 22:28:54,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2022-01-31 22:28:54,660 INFO L933 BasicCegarLoop]: 715 mSDtfsCounter, 2552 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 4197 mSolverCounterSat, 1182 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2589 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 5382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1182 IncrementalHoareTripleChecker+Valid, 4197 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-01-31 22:28:54,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2589 Valid, 1719 Invalid, 5382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1182 Valid, 4197 Invalid, 3 Unknown, 0 Unchecked, 13.8s Time] [2022-01-31 22:28:54,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8683 states. [2022-01-31 22:28:56,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8683 to 7633. [2022-01-31 22:28:56,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7633 states, 6047 states have (on average 1.4357532660823549) internal successors, (8682), 6229 states have internal predecessors, (8682), 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) [2022-01-31 22:28:56,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7633 states to 7633 states and 11494 transitions. [2022-01-31 22:28:56,249 INFO L78 Accepts]: Start accepts. Automaton has 7633 states and 11494 transitions. Word has length 64 [2022-01-31 22:28:56,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:28:56,249 INFO L470 AbstractCegarLoop]: Abstraction has 7633 states and 11494 transitions. [2022-01-31 22:28:56,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 22:28:56,249 INFO L276 IsEmpty]: Start isEmpty. Operand 7633 states and 11494 transitions. [2022-01-31 22:28:56,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-31 22:28:56,250 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:28:56,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:28:56,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-31 22:28:56,251 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:28:56,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:28:56,251 INFO L85 PathProgramCache]: Analyzing trace with hash 605121929, now seen corresponding path program 1 times [2022-01-31 22:28:56,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:28:56,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199828899] [2022-01-31 22:28:56,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:28:56,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:28:56,261 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:28:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:56,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:28:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:56,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:28:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:56,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:28:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:56,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:28:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:56,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:28:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:56,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:28:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:56,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 22:28:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:56,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-31 22:28:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:28:56,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:28:56,856 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:28:56,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199828899] [2022-01-31 22:28:56,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [199828899] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:28:56,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:28:56,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 22:28:56,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678348649] [2022-01-31 22:28:56,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:28:56,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 22:28:56,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:28:56,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 22:28:56,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-01-31 22:28:56,857 INFO L87 Difference]: Start difference. First operand 7633 states and 11494 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-01-31 22:29:02,772 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:04,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:07,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:09,239 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:11,392 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:18,649 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:23,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:29:23,856 INFO L93 Difference]: Finished difference Result 8727 states and 13456 transitions. [2022-01-31 22:29:23,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 22:29:23,857 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 68 [2022-01-31 22:29:23,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:29:23,910 INFO L225 Difference]: With dead ends: 8727 [2022-01-31 22:29:23,911 INFO L226 Difference]: Without dead ends: 8711 [2022-01-31 22:29:23,935 INFO L932 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 [2022-01-31 22:29:23,936 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 1784 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 5509 mSolverCounterSat, 770 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1822 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 6285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 770 IncrementalHoareTripleChecker+Valid, 5509 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:29:23,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1822 Valid, 1933 Invalid, 6285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [770 Valid, 5509 Invalid, 6 Unknown, 0 Unchecked, 24.0s Time] [2022-01-31 22:29:23,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8711 states. [2022-01-31 22:29:25,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8711 to 7639. [2022-01-31 22:29:25,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7639 states, 6050 states have (on average 1.4355371900826446) internal successors, (8685), 6235 states have internal predecessors, (8685), 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) [2022-01-31 22:29:25,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7639 states to 7639 states and 11519 transitions. [2022-01-31 22:29:25,560 INFO L78 Accepts]: Start accepts. Automaton has 7639 states and 11519 transitions. Word has length 68 [2022-01-31 22:29:25,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:29:25,560 INFO L470 AbstractCegarLoop]: Abstraction has 7639 states and 11519 transitions. [2022-01-31 22:29:25,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-01-31 22:29:25,561 INFO L276 IsEmpty]: Start isEmpty. Operand 7639 states and 11519 transitions. [2022-01-31 22:29:25,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-31 22:29:25,562 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:29:25,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:29:25,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-31 22:29:25,562 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:29:25,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:29:25,562 INFO L85 PathProgramCache]: Analyzing trace with hash -175683046, now seen corresponding path program 1 times [2022-01-31 22:29:25,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:29:25,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736228702] [2022-01-31 22:29:25,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:29:25,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:29:25,572 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:29:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:25,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:29:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:25,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:29:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:25,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:29:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:25,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:29:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:25,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:29:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:25,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:29:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:25,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 22:29:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:26,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-31 22:29:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:26,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:29:26,033 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:29:26,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736228702] [2022-01-31 22:29:26,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1736228702] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:29:26,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:29:26,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 22:29:26,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079114460] [2022-01-31 22:29:26,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:29:26,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 22:29:26,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:29:26,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 22:29:26,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-01-31 22:29:26,034 INFO L87 Difference]: Start difference. First operand 7639 states and 11519 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-01-31 22:29:31,920 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:35,174 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:29:39,519 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 [] [2022-01-31 22:29:44,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:29:44,934 INFO L93 Difference]: Finished difference Result 8719 states and 13430 transitions. [2022-01-31 22:29:44,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 22:29:44,934 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 69 [2022-01-31 22:29:44,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:29:44,998 INFO L225 Difference]: With dead ends: 8719 [2022-01-31 22:29:44,998 INFO L226 Difference]: Without dead ends: 8699 [2022-01-31 22:29:45,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-01-31 22:29:45,003 INFO L933 BasicCegarLoop]: 733 mSDtfsCounter, 1660 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 5085 mSolverCounterSat, 718 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1698 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 5805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 5085 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-01-31 22:29:45,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1698 Valid, 1919 Invalid, 5805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 5085 Invalid, 2 Unknown, 0 Unchecked, 15.9s Time] [2022-01-31 22:29:45,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8699 states. [2022-01-31 22:29:46,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8699 to 7637. [2022-01-31 22:29:46,688 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) [2022-01-31 22:29:46,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 11515 transitions. [2022-01-31 22:29:46,762 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 11515 transitions. Word has length 69 [2022-01-31 22:29:46,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:29:46,762 INFO L470 AbstractCegarLoop]: Abstraction has 7637 states and 11515 transitions. [2022-01-31 22:29:46,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-01-31 22:29:46,762 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 11515 transitions. [2022-01-31 22:29:46,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-31 22:29:46,764 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:29:46,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:29:46,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-31 22:29:46,764 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:29:46,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:29:46,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2112328753, now seen corresponding path program 1 times [2022-01-31 22:29:46,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:29:46,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744622941] [2022-01-31 22:29:46,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:29:46,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:29:46,774 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:29:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:47,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:29:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:47,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:29:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:47,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:29:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:47,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:29:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:47,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:29:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:47,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:29:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:47,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 22:29:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:47,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-01-31 22:29:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:29:47,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:29:47,260 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:29:47,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744622941] [2022-01-31 22:29:47,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1744622941] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:29:47,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:29:47,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 22:29:47,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076460648] [2022-01-31 22:29:47,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:29:47,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 22:29:47,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:29:47,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 22:29:47,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-01-31 22:29:47,262 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) [2022-01-31 22:29:55,376 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 [] [2022-01-31 22:30:01,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:30:01,259 INFO L93 Difference]: Finished difference Result 8702 states and 13411 transitions. [2022-01-31 22:30:01,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 22:30:01,260 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 [2022-01-31 22:30:01,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:30:01,282 INFO L225 Difference]: With dead ends: 8702 [2022-01-31 22:30:01,282 INFO L226 Difference]: Without dead ends: 8682 [2022-01-31 22:30:01,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-01-31 22:30:01,286 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 1372 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 5635 mSolverCounterSat, 583 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1410 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 6219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 5635 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:30:01,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1410 Valid, 1982 Invalid, 6219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 5635 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2022-01-31 22:30:01,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8682 states. [2022-01-31 22:30:03,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8682 to 7632. [2022-01-31 22:30:03,026 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) [2022-01-31 22:30:03,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7632 states to 7632 states and 11508 transitions. [2022-01-31 22:30:03,050 INFO L78 Accepts]: Start accepts. Automaton has 7632 states and 11508 transitions. Word has length 71 [2022-01-31 22:30:03,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:30:03,051 INFO L470 AbstractCegarLoop]: Abstraction has 7632 states and 11508 transitions. [2022-01-31 22:30:03,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-01-31 22:30:03,051 INFO L276 IsEmpty]: Start isEmpty. Operand 7632 states and 11508 transitions. [2022-01-31 22:30:03,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-31 22:30:03,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:30:03,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:30:03,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-31 22:30:03,074 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:30:03,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:30:03,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1256030660, now seen corresponding path program 1 times [2022-01-31 22:30:03,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:30:03,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664561500] [2022-01-31 22:30:03,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:30:03,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:30:03,101 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:30:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:03,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:30:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:03,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:30:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:03,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:30:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:03,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:30:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:03,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:30:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:03,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:30:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:03,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 22:30:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:03,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 22:30:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:03,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:30:03,610 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:30:03,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664561500] [2022-01-31 22:30:03,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1664561500] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:30:03,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:30:03,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 22:30:03,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53349274] [2022-01-31 22:30:03,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:30:03,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 22:30:03,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:30:03,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 22:30:03,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-01-31 22:30:03,611 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) [2022-01-31 22:30:14,449 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 [] [2022-01-31 22:30:25,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:30:25,515 INFO L93 Difference]: Finished difference Result 14550 states and 22479 transitions. [2022-01-31 22:30:25,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-31 22:30:25,515 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 [2022-01-31 22:30:25,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:30:25,574 INFO L225 Difference]: With dead ends: 14550 [2022-01-31 22:30:25,575 INFO L226 Difference]: Without dead ends: 10272 [2022-01-31 22:30:25,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=533, Invalid=2223, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 22:30:25,591 INFO L933 BasicCegarLoop]: 1093 mSDtfsCounter, 3784 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 7470 mSolverCounterSat, 2057 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3792 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 9528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2057 IncrementalHoareTripleChecker+Valid, 7470 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2022-01-31 22:30:25,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3792 Valid, 2499 Invalid, 9528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2057 Valid, 7470 Invalid, 1 Unknown, 0 Unchecked, 16.4s Time] [2022-01-31 22:30:25,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10272 states. [2022-01-31 22:30:27,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10272 to 8242. [2022-01-31 22:30:27,640 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) [2022-01-31 22:30:27,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8242 states to 8242 states and 12413 transitions. [2022-01-31 22:30:27,663 INFO L78 Accepts]: Start accepts. Automaton has 8242 states and 12413 transitions. Word has length 72 [2022-01-31 22:30:27,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:30:27,665 INFO L470 AbstractCegarLoop]: Abstraction has 8242 states and 12413 transitions. [2022-01-31 22:30:27,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-31 22:30:27,665 INFO L276 IsEmpty]: Start isEmpty. Operand 8242 states and 12413 transitions. [2022-01-31 22:30:27,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-31 22:30:27,667 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:30:27,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:30:27,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-31 22:30:27,667 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:30:27,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:30:27,668 INFO L85 PathProgramCache]: Analyzing trace with hash -26354390, now seen corresponding path program 1 times [2022-01-31 22:30:27,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:30:27,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315307124] [2022-01-31 22:30:27,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:30:27,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:30:27,677 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:30:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:27,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:30:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:27,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:30:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:27,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:30:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:27,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:30:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:28,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:30:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:28,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:30:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:28,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 22:30:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:28,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-31 22:30:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:28,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:30:28,222 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:30:28,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315307124] [2022-01-31 22:30:28,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [315307124] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:30:28,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:30:28,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 22:30:28,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086912458] [2022-01-31 22:30:28,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:30:28,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 22:30:28,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:30:28,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 22:30:28,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-01-31 22:30:28,223 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) [2022-01-31 22:30:36,217 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 [] [2022-01-31 22:30:41,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:30:41,609 INFO L93 Difference]: Finished difference Result 16652 states and 25671 transitions. [2022-01-31 22:30:41,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 22:30:41,610 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 [2022-01-31 22:30:41,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:30:41,660 INFO L225 Difference]: With dead ends: 16652 [2022-01-31 22:30:41,660 INFO L226 Difference]: Without dead ends: 9602 [2022-01-31 22:30:41,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2022-01-31 22:30:41,682 INFO L933 BasicCegarLoop]: 698 mSDtfsCounter, 2186 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 4322 mSolverCounterSat, 1014 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2220 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 5337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1014 IncrementalHoareTripleChecker+Valid, 4322 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-01-31 22:30:41,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2220 Valid, 1637 Invalid, 5337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1014 Valid, 4322 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2022-01-31 22:30:41,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9602 states. [2022-01-31 22:30:43,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9602 to 8400. [2022-01-31 22:30:43,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8400 states, 6667 states have (on average 1.4265786710664468) internal successors, (9511), 6870 states have internal predecessors, (9511), 1077 states have call successors, (1077), 517 states have call predecessors, (1077), 655 states have return successors, (2036), 1047 states have call predecessors, (2036), 1063 states have call successors, (2036) [2022-01-31 22:30:43,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8400 states to 8400 states and 12624 transitions. [2022-01-31 22:30:43,882 INFO L78 Accepts]: Start accepts. Automaton has 8400 states and 12624 transitions. Word has length 73 [2022-01-31 22:30:43,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:30:43,883 INFO L470 AbstractCegarLoop]: Abstraction has 8400 states and 12624 transitions. [2022-01-31 22:30:43,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-01-31 22:30:43,883 INFO L276 IsEmpty]: Start isEmpty. Operand 8400 states and 12624 transitions. [2022-01-31 22:30:43,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-31 22:30:43,884 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:30:43,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:30:43,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-31 22:30:43,884 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:30:43,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:30:43,885 INFO L85 PathProgramCache]: Analyzing trace with hash 879838427, now seen corresponding path program 1 times [2022-01-31 22:30:43,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:30:43,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770384323] [2022-01-31 22:30:43,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:30:43,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:30:43,894 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:30:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:44,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:30:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:44,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:30:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:44,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:30:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:44,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:30:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:44,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:30:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:44,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:30:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:44,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 22:30:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:30:44,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:30:44,328 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:30:44,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770384323] [2022-01-31 22:30:44,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [770384323] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:30:44,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:30:44,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 22:30:44,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061818265] [2022-01-31 22:30:44,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:30:44,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 22:30:44,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:30:44,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 22:30:44,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-31 22:30:44,329 INFO L87 Difference]: Start difference. First operand 8400 states and 12624 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 3 states have internal predecessors, (57), 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) [2022-01-31 22:30:52,618 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 [] [2022-01-31 22:30:58,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:30:58,104 INFO L93 Difference]: Finished difference Result 16936 states and 26062 transitions. [2022-01-31 22:30:58,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 22:30:58,105 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 3 states have internal predecessors, (57), 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 73 [2022-01-31 22:30:58,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:30:58,164 INFO L225 Difference]: With dead ends: 16936 [2022-01-31 22:30:58,164 INFO L226 Difference]: Without dead ends: 9728 [2022-01-31 22:30:58,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-01-31 22:30:58,200 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 1516 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 3412 mSolverCounterSat, 639 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 4052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 3412 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-01-31 22:30:58,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1552 Valid, 1309 Invalid, 4052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 3412 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2022-01-31 22:30:58,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9728 states. [2022-01-31 22:31:00,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9728 to 8460. [2022-01-31 22:31:00,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8460 states, 6727 states have (on average 1.4227738962390368) internal successors, (9571), 6930 states have internal predecessors, (9571), 1077 states have call successors, (1077), 517 states have call predecessors, (1077), 655 states have return successors, (2036), 1047 states have call predecessors, (2036), 1063 states have call successors, (2036) [2022-01-31 22:31:00,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8460 states to 8460 states and 12684 transitions. [2022-01-31 22:31:00,295 INFO L78 Accepts]: Start accepts. Automaton has 8460 states and 12684 transitions. Word has length 73 [2022-01-31 22:31:00,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:31:00,295 INFO L470 AbstractCegarLoop]: Abstraction has 8460 states and 12684 transitions. [2022-01-31 22:31:00,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 3 states have internal predecessors, (57), 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) [2022-01-31 22:31:00,296 INFO L276 IsEmpty]: Start isEmpty. Operand 8460 states and 12684 transitions. [2022-01-31 22:31:00,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-31 22:31:00,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:31:00,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:31:00,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-31 22:31:00,297 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:31:00,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:31:00,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1359799553, now seen corresponding path program 1 times [2022-01-31 22:31:00,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:31:00,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219658276] [2022-01-31 22:31:00,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:31:00,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:31:00,308 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:31:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:00,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:31:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:00,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:31:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:00,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:31:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:00,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:31:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:00,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:31:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:00,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:31:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:00,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 22:31:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:00,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 22:31:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:00,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:31:00,758 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:31:00,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219658276] [2022-01-31 22:31:00,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1219658276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:31:00,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:31:00,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 22:31:00,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918222552] [2022-01-31 22:31:00,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:31:00,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 22:31:00,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:31:00,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 22:31:00,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-01-31 22:31:00,759 INFO L87 Difference]: Start difference. First operand 8460 states and 12684 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) [2022-01-31 22:31:07,614 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 [] [2022-01-31 22:31:12,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:31:12,971 INFO L93 Difference]: Finished difference Result 17880 states and 27485 transitions. [2022-01-31 22:31:12,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 22:31:12,972 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 [2022-01-31 22:31:12,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:31:13,000 INFO L225 Difference]: With dead ends: 17880 [2022-01-31 22:31:13,000 INFO L226 Difference]: Without dead ends: 9674 [2022-01-31 22:31:13,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=222, Invalid=590, Unknown=0, NotChecked=0, Total=812 [2022-01-31 22:31:13,023 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 3388 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 2611 mSolverCounterSat, 1483 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3438 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 4095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1483 IncrementalHoareTripleChecker+Valid, 2611 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-01-31 22:31:13,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3438 Valid, 1284 Invalid, 4095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1483 Valid, 2611 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-01-31 22:31:13,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9674 states. [2022-01-31 22:31:15,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9674 to 8479. [2022-01-31 22:31:15,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8479 states, 6746 states have (on average 1.423065520308331) internal successors, (9600), 6949 states have internal predecessors, (9600), 1077 states have call successors, (1077), 517 states have call predecessors, (1077), 655 states have return successors, (2036), 1047 states have call predecessors, (2036), 1063 states have call successors, (2036) [2022-01-31 22:31:15,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8479 states to 8479 states and 12713 transitions. [2022-01-31 22:31:15,193 INFO L78 Accepts]: Start accepts. Automaton has 8479 states and 12713 transitions. Word has length 74 [2022-01-31 22:31:15,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:31:15,193 INFO L470 AbstractCegarLoop]: Abstraction has 8479 states and 12713 transitions. [2022-01-31 22:31:15,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 22:31:15,193 INFO L276 IsEmpty]: Start isEmpty. Operand 8479 states and 12713 transitions. [2022-01-31 22:31:15,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-31 22:31:15,195 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:31:15,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:31:15,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-31 22:31:15,195 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:31:15,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:31:15,195 INFO L85 PathProgramCache]: Analyzing trace with hash 941023037, now seen corresponding path program 1 times [2022-01-31 22:31:15,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:31:15,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454384071] [2022-01-31 22:31:15,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:31:15,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:31:15,205 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:31:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:15,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:31:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:15,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:31:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:15,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:31:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:15,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:31:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:15,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:31:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:15,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:31:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:15,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 22:31:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:15,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 22:31:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:15,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:31:15,746 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:31:15,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454384071] [2022-01-31 22:31:15,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1454384071] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:31:15,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:31:15,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 22:31:15,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323571468] [2022-01-31 22:31:15,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:31:15,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 22:31:15,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:31:15,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 22:31:15,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-01-31 22:31:15,747 INFO L87 Difference]: Start difference. First operand 8479 states and 12713 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) [2022-01-31 22:31:25,079 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 [] [2022-01-31 22:31:31,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:31:31,045 INFO L93 Difference]: Finished difference Result 13915 states and 21125 transitions. [2022-01-31 22:31:31,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-31 22:31:31,046 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 [2022-01-31 22:31:31,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:31:31,083 INFO L225 Difference]: With dead ends: 13915 [2022-01-31 22:31:31,084 INFO L226 Difference]: Without dead ends: 9448 [2022-01-31 22:31:31,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=374, Invalid=1432, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 22:31:31,101 INFO L933 BasicCegarLoop]: 672 mSDtfsCounter, 3070 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 4613 mSolverCounterSat, 1317 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3102 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 5931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1317 IncrementalHoareTripleChecker+Valid, 4613 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:31:31,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3102 Valid, 1613 Invalid, 5931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1317 Valid, 4613 Invalid, 1 Unknown, 0 Unchecked, 10.1s Time] [2022-01-31 22:31:31,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9448 states. [2022-01-31 22:31:33,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9448 to 7681. [2022-01-31 22:31:33,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7681 states, 6114 states have (on average 1.4208374223094538) internal successors, (8687), 6305 states have internal predecessors, (8687), 974 states have call successors, (974), 471 states have call predecessors, (974), 592 states have return successors, (1663), 939 states have call predecessors, (1663), 960 states have call successors, (1663) [2022-01-31 22:31:33,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7681 states to 7681 states and 11324 transitions. [2022-01-31 22:31:33,212 INFO L78 Accepts]: Start accepts. Automaton has 7681 states and 11324 transitions. Word has length 74 [2022-01-31 22:31:33,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:31:33,212 INFO L470 AbstractCegarLoop]: Abstraction has 7681 states and 11324 transitions. [2022-01-31 22:31:33,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-31 22:31:33,212 INFO L276 IsEmpty]: Start isEmpty. Operand 7681 states and 11324 transitions. [2022-01-31 22:31:33,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-31 22:31:33,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:31:33,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:31:33,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-31 22:31:33,213 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:31:33,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:31:33,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1087715839, now seen corresponding path program 1 times [2022-01-31 22:31:33,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:31:33,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824321981] [2022-01-31 22:31:33,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:31:33,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:31:33,223 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:31:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:33,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:31:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:33,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:31:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:33,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:31:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:33,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:31:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:33,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:31:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:33,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:31:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:33,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 22:31:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:33,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 22:31:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:31:33,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:31:33,745 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:31:33,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824321981] [2022-01-31 22:31:33,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [824321981] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:31:33,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:31:33,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 22:31:33,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665968562] [2022-01-31 22:31:33,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:31:33,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 22:31:33,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:31:33,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 22:31:33,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-31 22:31:33,747 INFO L87 Difference]: Start difference. First operand 7681 states and 11324 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) [2022-01-31 22:31:38,829 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 [] [2022-01-31 22:31:40,954 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:31:43,090 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:31:47,498 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 [] [2022-01-31 22:31:58,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:31:58,017 INFO L93 Difference]: Finished difference Result 11856 states and 17974 transitions. [2022-01-31 22:31:58,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 22:31:58,017 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 [2022-01-31 22:31:58,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:31:58,050 INFO L225 Difference]: With dead ends: 11856 [2022-01-31 22:31:58,050 INFO L226 Difference]: Without dead ends: 11843 [2022-01-31 22:31:58,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=231, Invalid=639, Unknown=0, NotChecked=0, Total=870 [2022-01-31 22:31:58,059 INFO L933 BasicCegarLoop]: 1153 mSDtfsCounter, 2969 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 4228 mSolverCounterSat, 1395 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3016 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 5627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1395 IncrementalHoareTripleChecker+Valid, 4228 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2022-01-31 22:31:58,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3016 Valid, 1948 Invalid, 5627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1395 Valid, 4228 Invalid, 4 Unknown, 0 Unchecked, 18.7s Time] [2022-01-31 22:31:58,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11843 states. [2022-01-31 22:32:00,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11843 to 8312. [2022-01-31 22:32:00,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8312 states, 6626 states have (on average 1.4240869302746755) internal successors, (9436), 6818 states have internal predecessors, (9436), 1043 states have call successors, (1043), 512 states have call predecessors, (1043), 642 states have return successors, (1777), 1017 states have call predecessors, (1777), 1029 states have call successors, (1777) [2022-01-31 22:32:00,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8312 states to 8312 states and 12256 transitions. [2022-01-31 22:32:00,528 INFO L78 Accepts]: Start accepts. Automaton has 8312 states and 12256 transitions. Word has length 74 [2022-01-31 22:32:00,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:32:00,529 INFO L470 AbstractCegarLoop]: Abstraction has 8312 states and 12256 transitions. [2022-01-31 22:32:00,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-01-31 22:32:00,529 INFO L276 IsEmpty]: Start isEmpty. Operand 8312 states and 12256 transitions. [2022-01-31 22:32:00,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-31 22:32:00,530 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:32:00,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:32:00,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-31 22:32:00,530 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:32:00,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:32:00,530 INFO L85 PathProgramCache]: Analyzing trace with hash -189949733, now seen corresponding path program 1 times [2022-01-31 22:32:00,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:32:00,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822608953] [2022-01-31 22:32:00,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:32:00,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:32:00,540 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:32:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:00,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:32:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:00,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:32:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:00,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:32:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:00,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:32:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:00,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:32:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:00,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:32:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:00,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 22:32:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:01,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 22:32:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:32:01,043 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:32:01,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822608953] [2022-01-31 22:32:01,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [822608953] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:32:01,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:32:01,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 22:32:01,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316333498] [2022-01-31 22:32:01,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:32:01,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 22:32:01,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:32:01,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 22:32:01,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-01-31 22:32:01,044 INFO L87 Difference]: Start difference. First operand 8312 states and 12256 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) [2022-01-31 22:32:11,061 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 [] [2022-01-31 22:32:16,794 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:18,927 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:28,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:32:28,616 INFO L93 Difference]: Finished difference Result 10477 states and 15824 transitions. [2022-01-31 22:32:28,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 22:32:28,616 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 [2022-01-31 22:32:28,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:32:28,639 INFO L225 Difference]: With dead ends: 10477 [2022-01-31 22:32:28,640 INFO L226 Difference]: Without dead ends: 10473 [2022-01-31 22:32:28,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=542, Invalid=1810, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 22:32:28,643 INFO L933 BasicCegarLoop]: 1094 mSDtfsCounter, 3397 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 7384 mSolverCounterSat, 1603 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3438 SdHoareTripleChecker+Valid, 2209 SdHoareTripleChecker+Invalid, 8990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1603 IncrementalHoareTripleChecker+Valid, 7384 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2022-01-31 22:32:28,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3438 Valid, 2209 Invalid, 8990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1603 Valid, 7384 Invalid, 3 Unknown, 0 Unchecked, 20.4s Time] [2022-01-31 22:32:28,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10473 states. [2022-01-31 22:32:31,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10473 to 8314. [2022-01-31 22:32:31,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8314 states, 6628 states have (on average 1.423958961979481) internal successors, (9438), 6820 states have internal predecessors, (9438), 1043 states have call successors, (1043), 512 states have call predecessors, (1043), 642 states have return successors, (1777), 1017 states have call predecessors, (1777), 1029 states have call successors, (1777) [2022-01-31 22:32:31,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8314 states to 8314 states and 12258 transitions. [2022-01-31 22:32:31,322 INFO L78 Accepts]: Start accepts. Automaton has 8314 states and 12258 transitions. Word has length 75 [2022-01-31 22:32:31,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:32:31,322 INFO L470 AbstractCegarLoop]: Abstraction has 8314 states and 12258 transitions. [2022-01-31 22:32:31,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 22:32:31,323 INFO L276 IsEmpty]: Start isEmpty. Operand 8314 states and 12258 transitions. [2022-01-31 22:32:31,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-31 22:32:31,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:32:31,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:32:31,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-31 22:32:31,324 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:32:31,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:32:31,324 INFO L85 PathProgramCache]: Analyzing trace with hash -189672903, now seen corresponding path program 1 times [2022-01-31 22:32:31,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:32:31,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671310142] [2022-01-31 22:32:31,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:32:31,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:32:31,335 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:32:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:31,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:32:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:31,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:32:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:31,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:32:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:31,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:32:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:31,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:32:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:31,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:32:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:31,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 22:32:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:31,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 22:32:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:32:31,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:32:31,821 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:32:31,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671310142] [2022-01-31 22:32:31,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1671310142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:32:31,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:32:31,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-31 22:32:31,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62300391] [2022-01-31 22:32:31,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:32:31,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 22:32:31,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:32:31,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 22:32:31,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-01-31 22:32:31,822 INFO L87 Difference]: Start difference. First operand 8314 states and 12258 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) [2022-01-31 22:32:38,830 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:40,953 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:43,084 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:45,208 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:32:52,274 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 [] [2022-01-31 22:32:59,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:32:59,523 INFO L93 Difference]: Finished difference Result 9442 states and 14277 transitions. [2022-01-31 22:32:59,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 22:32:59,524 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 [2022-01-31 22:32:59,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:32:59,547 INFO L225 Difference]: With dead ends: 9442 [2022-01-31 22:32:59,547 INFO L226 Difference]: Without dead ends: 9428 [2022-01-31 22:32:59,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2022-01-31 22:32:59,552 INFO L933 BasicCegarLoop]: 710 mSDtfsCounter, 2294 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 6847 mSolverCounterSat, 1023 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2333 SdHoareTripleChecker+Valid, 2259 SdHoareTripleChecker+Invalid, 7875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1023 IncrementalHoareTripleChecker+Valid, 6847 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2022-01-31 22:32:59,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2333 Valid, 2259 Invalid, 7875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1023 Valid, 6847 Invalid, 5 Unknown, 0 Unchecked, 22.9s Time] [2022-01-31 22:32:59,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9428 states. [2022-01-31 22:33:02,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9428 to 8316. [2022-01-31 22:33:02,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8316 states, 6629 states have (on average 1.4238950067883542) internal successors, (9439), 6822 states have internal predecessors, (9439), 1043 states have call successors, (1043), 512 states have call predecessors, (1043), 643 states have return successors, (1793), 1017 states have call predecessors, (1793), 1029 states have call successors, (1793) [2022-01-31 22:33:02,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8316 states to 8316 states and 12275 transitions. [2022-01-31 22:33:02,241 INFO L78 Accepts]: Start accepts. Automaton has 8316 states and 12275 transitions. Word has length 75 [2022-01-31 22:33:02,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:33:02,242 INFO L470 AbstractCegarLoop]: Abstraction has 8316 states and 12275 transitions. [2022-01-31 22:33:02,242 INFO L471 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) [2022-01-31 22:33:02,242 INFO L276 IsEmpty]: Start isEmpty. Operand 8316 states and 12275 transitions. [2022-01-31 22:33:02,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-31 22:33:02,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:33:02,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:33:02,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-31 22:33:02,243 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:33:02,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:33:02,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1279361975, now seen corresponding path program 1 times [2022-01-31 22:33:02,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:33:02,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433530097] [2022-01-31 22:33:02,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:33:02,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:33:02,255 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:33:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:02,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:33:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:02,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:33:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:02,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:33:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:02,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:33:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:02,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:33:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:02,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:33:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:02,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 22:33:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:02,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-01-31 22:33:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:02,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:33:02,731 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:33:02,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433530097] [2022-01-31 22:33:02,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1433530097] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:33:02,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:33:02,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-31 22:33:02,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603778156] [2022-01-31 22:33:02,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:33:02,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 22:33:02,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:33:02,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 22:33:02,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-01-31 22:33:02,739 INFO L87 Difference]: Start difference. First operand 8316 states and 12275 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) [2022-01-31 22:33:12,824 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 [] [2022-01-31 22:33:20,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:33:20,299 INFO L93 Difference]: Finished difference Result 9423 states and 14209 transitions. [2022-01-31 22:33:20,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 22:33:20,299 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 [2022-01-31 22:33:20,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:33:20,318 INFO L225 Difference]: With dead ends: 9423 [2022-01-31 22:33:20,319 INFO L226 Difference]: Without dead ends: 9370 [2022-01-31 22:33:20,322 INFO L932 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 [2022-01-31 22:33:20,322 INFO L933 BasicCegarLoop]: 698 mSDtfsCounter, 1944 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 6776 mSolverCounterSat, 846 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 7623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 846 IncrementalHoareTripleChecker+Valid, 6776 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-01-31 22:33:20,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1983 Valid, 2143 Invalid, 7623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [846 Valid, 6776 Invalid, 1 Unknown, 0 Unchecked, 12.7s Time] [2022-01-31 22:33:20,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9370 states. [2022-01-31 22:33:22,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9370 to 8279. [2022-01-31 22:33:22,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8279 states, 6597 states have (on average 1.4242837653478855) internal successors, (9396), 6790 states have internal predecessors, (9396), 1040 states have call successors, (1040), 510 states have call predecessors, (1040), 641 states have return successors, (1789), 1014 states have call predecessors, (1789), 1026 states have call successors, (1789) [2022-01-31 22:33:22,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8279 states to 8279 states and 12225 transitions. [2022-01-31 22:33:22,988 INFO L78 Accepts]: Start accepts. Automaton has 8279 states and 12225 transitions. Word has length 75 [2022-01-31 22:33:22,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:33:22,988 INFO L470 AbstractCegarLoop]: Abstraction has 8279 states and 12225 transitions. [2022-01-31 22:33:22,988 INFO L471 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) [2022-01-31 22:33:22,988 INFO L276 IsEmpty]: Start isEmpty. Operand 8279 states and 12225 transitions. [2022-01-31 22:33:22,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-31 22:33:22,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:33:22,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:33:22,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-31 22:33:22,994 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:33:22,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:33:22,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1573546191, now seen corresponding path program 1 times [2022-01-31 22:33:22,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:33:22,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396400109] [2022-01-31 22:33:22,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:33:22,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:33:23,007 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:33:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:23,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:33:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:23,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:33:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:23,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:33:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:23,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:33:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:23,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:33:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:23,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:33:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:23,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 22:33:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:23,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-31 22:33:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:23,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-31 22:33:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:23,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-31 22:33:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:23,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:33:23,471 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:33:23,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396400109] [2022-01-31 22:33:23,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1396400109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:33:23,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:33:23,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 22:33:23,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929992863] [2022-01-31 22:33:23,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:33:23,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 22:33:23,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:33:23,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 22:33:23,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-31 22:33:23,473 INFO L87 Difference]: Start difference. First operand 8279 states and 12225 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) [2022-01-31 22:33:30,535 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 [] [2022-01-31 22:33:40,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:33:40,469 INFO L93 Difference]: Finished difference Result 13232 states and 19815 transitions. [2022-01-31 22:33:40,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 22:33:40,470 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 [2022-01-31 22:33:40,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:33:40,490 INFO L225 Difference]: With dead ends: 13232 [2022-01-31 22:33:40,490 INFO L226 Difference]: Without dead ends: 9240 [2022-01-31 22:33:40,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=180, Invalid=522, Unknown=0, NotChecked=0, Total=702 [2022-01-31 22:33:40,501 INFO L933 BasicCegarLoop]: 1114 mSDtfsCounter, 2541 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 3929 mSolverCounterSat, 1215 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2594 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 5145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1215 IncrementalHoareTripleChecker+Valid, 3929 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-01-31 22:33:40,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2594 Valid, 1909 Invalid, 5145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1215 Valid, 3929 Invalid, 1 Unknown, 0 Unchecked, 11.7s Time] [2022-01-31 22:33:40,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9240 states. [2022-01-31 22:33:43,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9240 to 7632. [2022-01-31 22:33:43,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7632 states, 6072 states have (on average 1.4204545454545454) internal successors, (8625), 6260 states have internal predecessors, (8625), 967 states have call successors, (967), 469 states have call predecessors, (967), 592 states have return successors, (1566), 934 states have call predecessors, (1566), 945 states have call successors, (1566) [2022-01-31 22:33:43,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7632 states to 7632 states and 11158 transitions. [2022-01-31 22:33:43,151 INFO L78 Accepts]: Start accepts. Automaton has 7632 states and 11158 transitions. Word has length 78 [2022-01-31 22:33:43,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:33:43,151 INFO L470 AbstractCegarLoop]: Abstraction has 7632 states and 11158 transitions. [2022-01-31 22:33:43,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 3 states have internal predecessors, (56), 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) [2022-01-31 22:33:43,152 INFO L276 IsEmpty]: Start isEmpty. Operand 7632 states and 11158 transitions. [2022-01-31 22:33:43,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-31 22:33:43,153 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:33:43,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:33:43,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-31 22:33:43,153 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:33:43,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:33:43,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1631640044, now seen corresponding path program 1 times [2022-01-31 22:33:43,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:33:43,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762459381] [2022-01-31 22:33:43,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:33:43,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:33:43,166 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:33:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:43,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:33:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:43,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:33:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:43,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:33:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:43,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:33:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:43,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:33:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:43,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:33:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:43,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 22:33:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:33:43,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:33:43,577 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:33:43,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762459381] [2022-01-31 22:33:43,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [762459381] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:33:43,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:33:43,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 22:33:43,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539682727] [2022-01-31 22:33:43,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:33:43,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 22:33:43,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:33:43,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 22:33:43,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-31 22:33:43,580 INFO L87 Difference]: Start difference. First operand 7632 states and 11158 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2022-01-31 22:33:48,276 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 [] [2022-01-31 22:33:50,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:33:55,030 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:01,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:34:01,767 INFO L93 Difference]: Finished difference Result 15302 states and 22863 transitions. [2022-01-31 22:34:01,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 22:34:01,768 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 3 states have internal predecessors, (60), 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 76 [2022-01-31 22:34:01,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:34:01,797 INFO L225 Difference]: With dead ends: 15302 [2022-01-31 22:34:01,797 INFO L226 Difference]: Without dead ends: 8838 [2022-01-31 22:34:01,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-01-31 22:34:01,814 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 1455 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 3081 mSolverCounterSat, 621 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 3704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 3081 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:34:01,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1491 Valid, 1196 Invalid, 3704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 3081 Invalid, 2 Unknown, 0 Unchecked, 13.1s Time] [2022-01-31 22:34:01,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8838 states. [2022-01-31 22:34:04,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8838 to 7656. [2022-01-31 22:34:04,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7656 states, 6096 states have (on average 1.4187992125984252) internal successors, (8649), 6284 states have internal predecessors, (8649), 967 states have call successors, (967), 469 states have call predecessors, (967), 592 states have return successors, (1566), 934 states have call predecessors, (1566), 945 states have call successors, (1566) [2022-01-31 22:34:04,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7656 states to 7656 states and 11182 transitions. [2022-01-31 22:34:04,566 INFO L78 Accepts]: Start accepts. Automaton has 7656 states and 11182 transitions. Word has length 76 [2022-01-31 22:34:04,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:34:04,567 INFO L470 AbstractCegarLoop]: Abstraction has 7656 states and 11182 transitions. [2022-01-31 22:34:04,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2022-01-31 22:34:04,567 INFO L276 IsEmpty]: Start isEmpty. Operand 7656 states and 11182 transitions. [2022-01-31 22:34:04,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-31 22:34:04,584 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:34:04,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:34:04,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-31 22:34:04,584 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:34:04,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:34:04,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1608608426, now seen corresponding path program 1 times [2022-01-31 22:34:04,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:34:04,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907907257] [2022-01-31 22:34:04,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:34:04,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:34:04,596 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:34:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:04,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:34:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:04,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:34:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:04,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:34:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:04,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:34:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:04,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:34:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:04,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:34:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:04,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 22:34:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:04,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-31 22:34:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:04,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 22:34:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:34:04,993 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:34:04,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907907257] [2022-01-31 22:34:04,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [907907257] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:34:04,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:34:04,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 22:34:04,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998700290] [2022-01-31 22:34:04,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:34:04,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 22:34:04,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:34:04,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 22:34:04,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-31 22:34:04,994 INFO L87 Difference]: Start difference. First operand 7656 states and 11182 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) [2022-01-31 22:34:09,773 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:15,464 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:21,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:34:21,470 INFO L93 Difference]: Finished difference Result 15152 states and 22529 transitions. [2022-01-31 22:34:21,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 22:34:21,470 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 [2022-01-31 22:34:21,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:34:21,488 INFO L225 Difference]: With dead ends: 15152 [2022-01-31 22:34:21,488 INFO L226 Difference]: Without dead ends: 8664 [2022-01-31 22:34:21,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-01-31 22:34:21,505 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 1903 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 2874 mSolverCounterSat, 791 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1938 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 3667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 791 IncrementalHoareTripleChecker+Valid, 2874 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-01-31 22:34:21,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1938 Valid, 1239 Invalid, 3667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [791 Valid, 2874 Invalid, 2 Unknown, 0 Unchecked, 11.6s Time] [2022-01-31 22:34:21,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8664 states. [2022-01-31 22:34:24,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8664 to 7608. [2022-01-31 22:34:24,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7608 states, 6048 states have (on average 1.4181547619047619) internal successors, (8577), 6252 states have internal predecessors, (8577), 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) [2022-01-31 22:34:24,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7608 states to 7608 states and 11110 transitions. [2022-01-31 22:34:24,573 INFO L78 Accepts]: Start accepts. Automaton has 7608 states and 11110 transitions. Word has length 79 [2022-01-31 22:34:24,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:34:24,573 INFO L470 AbstractCegarLoop]: Abstraction has 7608 states and 11110 transitions. [2022-01-31 22:34:24,574 INFO L471 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) [2022-01-31 22:34:24,574 INFO L276 IsEmpty]: Start isEmpty. Operand 7608 states and 11110 transitions. [2022-01-31 22:34:24,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-31 22:34:24,575 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:34:24,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:34:24,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-31 22:34:24,575 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:34:24,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:34:24,576 INFO L85 PathProgramCache]: Analyzing trace with hash -697853230, now seen corresponding path program 1 times [2022-01-31 22:34:24,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:34:24,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77917891] [2022-01-31 22:34:24,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:34:24,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:34:24,588 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:34:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:24,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:34:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:24,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:34:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:24,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:34:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:24,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:34:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:24,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:34:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:24,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:34:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:24,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 22:34:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:25,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:34:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:25,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:34:25,010 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:34:25,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77917891] [2022-01-31 22:34:25,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [77917891] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:34:25,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:34:25,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 22:34:25,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732516585] [2022-01-31 22:34:25,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:34:25,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 22:34:25,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:34:25,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 22:34:25,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-31 22:34:25,011 INFO L87 Difference]: Start difference. First operand 7608 states and 11110 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) [2022-01-31 22:34:29,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:31,663 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:36,631 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 [] [2022-01-31 22:34:42,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:34:42,858 INFO L93 Difference]: Finished difference Result 11918 states and 17786 transitions. [2022-01-31 22:34:42,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 22:34:42,859 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 [2022-01-31 22:34:42,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:34:42,880 INFO L225 Difference]: With dead ends: 11918 [2022-01-31 22:34:42,880 INFO L226 Difference]: Without dead ends: 8854 [2022-01-31 22:34:42,890 INFO L932 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 [2022-01-31 22:34:42,890 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 1979 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 898 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2012 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 3493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 898 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-01-31 22:34:42,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2012 Valid, 1328 Invalid, 3493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [898 Valid, 2592 Invalid, 3 Unknown, 0 Unchecked, 12.7s Time] [2022-01-31 22:34:42,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8854 states. [2022-01-31 22:34:45,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8854 to 7728. [2022-01-31 22:34:45,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7728 states, 6168 states have (on average 1.4229896238651103) internal successors, (8777), 6372 states have internal predecessors, (8777), 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) [2022-01-31 22:34:45,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7728 states to 7728 states and 11310 transitions. [2022-01-31 22:34:45,752 INFO L78 Accepts]: Start accepts. Automaton has 7728 states and 11310 transitions. Word has length 80 [2022-01-31 22:34:45,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:34:45,753 INFO L470 AbstractCegarLoop]: Abstraction has 7728 states and 11310 transitions. [2022-01-31 22:34:45,754 INFO L471 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) [2022-01-31 22:34:45,754 INFO L276 IsEmpty]: Start isEmpty. Operand 7728 states and 11310 transitions. [2022-01-31 22:34:45,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-31 22:34:45,755 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:34:45,755 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:34:45,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-31 22:34:45,755 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:34:45,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:34:45,755 INFO L85 PathProgramCache]: Analyzing trace with hash -192162812, now seen corresponding path program 1 times [2022-01-31 22:34:45,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:34:45,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191771243] [2022-01-31 22:34:45,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:34:45,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:34:45,768 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:34:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:46,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:34:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:46,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:34:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:46,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:34:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:46,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:34:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:46,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:34:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:46,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:34:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:46,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 22:34:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:46,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 22:34:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:46,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 22:34:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:34:46,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:34:46,222 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:34:46,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191771243] [2022-01-31 22:34:46,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1191771243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:34:46,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:34:46,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 22:34:46,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492459602] [2022-01-31 22:34:46,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:34:46,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 22:34:46,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:34:46,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 22:34:46,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-31 22:34:46,224 INFO L87 Difference]: Start difference. First operand 7728 states and 11310 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) [2022-01-31 22:34:50,938 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 [] [2022-01-31 22:34:55,751 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:34:59,645 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:35:08,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:35:08,400 INFO L93 Difference]: Finished difference Result 10781 states and 15850 transitions. [2022-01-31 22:35:08,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 22:35:08,400 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 [2022-01-31 22:35:08,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:35:08,412 INFO L225 Difference]: With dead ends: 10781 [2022-01-31 22:35:08,412 INFO L226 Difference]: Without dead ends: 6589 [2022-01-31 22:35:08,420 INFO L932 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 [2022-01-31 22:35:08,420 INFO L933 BasicCegarLoop]: 979 mSDtfsCounter, 3851 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 4982 mSolverCounterSat, 1520 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3902 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 6505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1520 IncrementalHoareTripleChecker+Valid, 4982 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:35:08,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3902 Valid, 1799 Invalid, 6505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1520 Valid, 4982 Invalid, 3 Unknown, 0 Unchecked, 17.1s Time] [2022-01-31 22:35:08,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6589 states. [2022-01-31 22:35:10,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6589 to 5590. [2022-01-31 22:35:10,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5590 states, 4498 states have (on average 1.4132947976878614) internal successors, (6357), 4615 states have internal predecessors, (6357), 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) [2022-01-31 22:35:10,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5590 states to 5590 states and 7939 transitions. [2022-01-31 22:35:10,669 INFO L78 Accepts]: Start accepts. Automaton has 5590 states and 7939 transitions. Word has length 84 [2022-01-31 22:35:10,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:35:10,669 INFO L470 AbstractCegarLoop]: Abstraction has 5590 states and 7939 transitions. [2022-01-31 22:35:10,670 INFO L471 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) [2022-01-31 22:35:10,670 INFO L276 IsEmpty]: Start isEmpty. Operand 5590 states and 7939 transitions. [2022-01-31 22:35:10,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-31 22:35:10,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:35:10,671 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:35:10,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-31 22:35:10,671 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:35:10,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:35:10,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1582799931, now seen corresponding path program 1 times [2022-01-31 22:35:10,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:35:10,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983781938] [2022-01-31 22:35:10,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:35:10,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:35:10,684 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:35:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:10,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:35:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:10,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:35:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:10,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:35:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:11,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:35:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:11,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:35:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:11,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:35:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:11,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 22:35:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:11,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 22:35:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:11,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:35:11,136 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:35:11,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983781938] [2022-01-31 22:35:11,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [983781938] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:35:11,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:35:11,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 22:35:11,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162598986] [2022-01-31 22:35:11,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:35:11,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 22:35:11,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:35:11,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 22:35:11,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-31 22:35:11,137 INFO L87 Difference]: Start difference. First operand 5590 states and 7939 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) [2022-01-31 22:35:18,045 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 [] [2022-01-31 22:35:23,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:35:23,522 INFO L93 Difference]: Finished difference Result 9514 states and 13743 transitions. [2022-01-31 22:35:23,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 22:35:23,522 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 [2022-01-31 22:35:23,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:35:23,535 INFO L225 Difference]: With dead ends: 9514 [2022-01-31 22:35:23,536 INFO L226 Difference]: Without dead ends: 6577 [2022-01-31 22:35:23,542 INFO L932 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 [2022-01-31 22:35:23,543 INFO L933 BasicCegarLoop]: 667 mSDtfsCounter, 2127 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 935 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2164 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 3406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:35:23,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2164 Valid, 1268 Invalid, 3406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 2470 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2022-01-31 22:35:23,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6577 states. [2022-01-31 22:35:25,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6577 to 5506. [2022-01-31 22:35:25,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5506 states, 4414 states have (on average 1.4184413230629813) internal successors, (6261), 4531 states have internal predecessors, (6261), 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) [2022-01-31 22:35:25,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5506 states to 5506 states and 7843 transitions. [2022-01-31 22:35:25,812 INFO L78 Accepts]: Start accepts. Automaton has 5506 states and 7843 transitions. Word has length 81 [2022-01-31 22:35:25,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:35:25,813 INFO L470 AbstractCegarLoop]: Abstraction has 5506 states and 7843 transitions. [2022-01-31 22:35:25,813 INFO L471 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) [2022-01-31 22:35:25,813 INFO L276 IsEmpty]: Start isEmpty. Operand 5506 states and 7843 transitions. [2022-01-31 22:35:25,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-31 22:35:25,814 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:35:25,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:35:25,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-31 22:35:25,814 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:35:25,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:35:25,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1178730404, now seen corresponding path program 1 times [2022-01-31 22:35:25,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:35:25,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819654117] [2022-01-31 22:35:25,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:35:25,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:35:25,827 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:35:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:26,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:35:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:26,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:35:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:26,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:35:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:26,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:35:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:26,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:35:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:26,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:35:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:26,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 22:35:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:26,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:35:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:26,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:35:26,367 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:35:26,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819654117] [2022-01-31 22:35:26,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1819654117] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:35:26,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:35:26,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-31 22:35:26,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451553072] [2022-01-31 22:35:26,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:35:26,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 22:35:26,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:35:26,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 22:35:26,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-01-31 22:35:26,368 INFO L87 Difference]: Start difference. First operand 5506 states and 7843 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) [2022-01-31 22:35:37,299 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 [] [2022-01-31 22:35:44,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:35:44,563 INFO L93 Difference]: Finished difference Result 6428 states and 9366 transitions. [2022-01-31 22:35:44,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 22:35:44,564 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 [2022-01-31 22:35:44,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:35:44,577 INFO L225 Difference]: With dead ends: 6428 [2022-01-31 22:35:44,577 INFO L226 Difference]: Without dead ends: 6408 [2022-01-31 22:35:44,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2022-01-31 22:35:44,579 INFO L933 BasicCegarLoop]: 665 mSDtfsCounter, 1255 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 7196 mSolverCounterSat, 527 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 2165 SdHoareTripleChecker+Invalid, 7724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 7196 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:35:44,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1294 Valid, 2165 Invalid, 7724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 7196 Invalid, 1 Unknown, 0 Unchecked, 14.0s Time] [2022-01-31 22:35:44,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6408 states. [2022-01-31 22:35:46,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6408 to 5502. [2022-01-31 22:35:46,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5502 states, 4411 states have (on average 1.4184992065291318) internal successors, (6257), 4528 states have internal predecessors, (6257), 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) [2022-01-31 22:35:46,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5502 states to 5502 states and 7837 transitions. [2022-01-31 22:35:46,809 INFO L78 Accepts]: Start accepts. Automaton has 5502 states and 7837 transitions. Word has length 81 [2022-01-31 22:35:46,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:35:46,809 INFO L470 AbstractCegarLoop]: Abstraction has 5502 states and 7837 transitions. [2022-01-31 22:35:46,810 INFO L471 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) [2022-01-31 22:35:46,810 INFO L276 IsEmpty]: Start isEmpty. Operand 5502 states and 7837 transitions. [2022-01-31 22:35:46,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-31 22:35:46,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:35:46,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:35:46,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-31 22:35:46,812 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:35:46,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:35:46,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1957637781, now seen corresponding path program 1 times [2022-01-31 22:35:46,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:35:46,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482333671] [2022-01-31 22:35:46,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:35:46,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:35:46,825 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:35:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:47,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:35:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:47,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:35:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:47,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:35:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:47,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:35:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:47,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:35:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:47,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:35:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:47,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 22:35:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:47,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 22:35:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:35:47,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:35:47,349 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:35:47,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482333671] [2022-01-31 22:35:47,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [482333671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:35:47,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:35:47,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 22:35:47,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387565017] [2022-01-31 22:35:47,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:35:47,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 22:35:47,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:35:47,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 22:35:47,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-01-31 22:35:47,350 INFO L87 Difference]: Start difference. First operand 5502 states and 7837 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) [2022-01-31 22:35:53,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:35:59,047 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:36:05,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:36:05,201 INFO L93 Difference]: Finished difference Result 6613 states and 9638 transitions. [2022-01-31 22:36:05,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-31 22:36:05,202 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 [2022-01-31 22:36:05,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:36:05,215 INFO L225 Difference]: With dead ends: 6613 [2022-01-31 22:36:05,216 INFO L226 Difference]: Without dead ends: 6597 [2022-01-31 22:36:05,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2022-01-31 22:36:05,218 INFO L933 BasicCegarLoop]: 666 mSDtfsCounter, 1963 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 4920 mSolverCounterSat, 859 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2001 SdHoareTripleChecker+Valid, 1906 SdHoareTripleChecker+Invalid, 5781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 859 IncrementalHoareTripleChecker+Valid, 4920 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-01-31 22:36:05,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2001 Valid, 1906 Invalid, 5781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [859 Valid, 4920 Invalid, 2 Unknown, 0 Unchecked, 13.4s Time] [2022-01-31 22:36:05,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6597 states. [2022-01-31 22:36:07,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6597 to 5525. [2022-01-31 22:36:07,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5525 states, 4432 states have (on average 1.4169675090252707) internal successors, (6280), 4550 states have internal predecessors, (6280), 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) [2022-01-31 22:36:07,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5525 states to 5525 states and 7864 transitions. [2022-01-31 22:36:07,503 INFO L78 Accepts]: Start accepts. Automaton has 5525 states and 7864 transitions. Word has length 82 [2022-01-31 22:36:07,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:36:07,503 INFO L470 AbstractCegarLoop]: Abstraction has 5525 states and 7864 transitions. [2022-01-31 22:36:07,504 INFO L471 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) [2022-01-31 22:36:07,504 INFO L276 IsEmpty]: Start isEmpty. Operand 5525 states and 7864 transitions. [2022-01-31 22:36:07,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-31 22:36:07,505 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:36:07,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:36:07,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-31 22:36:07,505 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:36:07,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:36:07,505 INFO L85 PathProgramCache]: Analyzing trace with hash -252551860, now seen corresponding path program 1 times [2022-01-31 22:36:07,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:36:07,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248458958] [2022-01-31 22:36:07,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:36:07,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:36:07,518 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:36:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:07,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:36:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:07,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:36:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:07,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:36:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:07,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:36:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:07,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:36:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:07,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:36:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:07,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 22:36:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:08,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 22:36:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:08,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:36:08,069 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:36:08,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248458958] [2022-01-31 22:36:08,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1248458958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:36:08,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:36:08,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 22:36:08,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023881314] [2022-01-31 22:36:08,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:36:08,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 22:36:08,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:36:08,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 22:36:08,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-01-31 22:36:08,070 INFO L87 Difference]: Start difference. First operand 5525 states and 7864 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) [2022-01-31 22:36:17,964 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 [] [2022-01-31 22:36:24,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:36:24,637 INFO L93 Difference]: Finished difference Result 11557 states and 16862 transitions. [2022-01-31 22:36:24,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 22:36:24,638 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 [2022-01-31 22:36:24,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:36:24,651 INFO L225 Difference]: With dead ends: 11557 [2022-01-31 22:36:24,652 INFO L226 Difference]: Without dead ends: 6590 [2022-01-31 22:36:24,660 INFO L932 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 [2022-01-31 22:36:24,661 INFO L933 BasicCegarLoop]: 648 mSDtfsCounter, 1420 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 5029 mSolverCounterSat, 596 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 5626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 5029 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:36:24,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1454 Valid, 1613 Invalid, 5626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 5029 Invalid, 1 Unknown, 0 Unchecked, 12.0s Time] [2022-01-31 22:36:24,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6590 states. [2022-01-31 22:36:27,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6590 to 5537. [2022-01-31 22:36:27,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5537 states, 4444 states have (on average 1.4158415841584158) internal successors, (6292), 4550 states have internal predecessors, (6292), 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) [2022-01-31 22:36:27,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5537 states to 5537 states and 7876 transitions. [2022-01-31 22:36:27,094 INFO L78 Accepts]: Start accepts. Automaton has 5537 states and 7876 transitions. Word has length 83 [2022-01-31 22:36:27,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:36:27,094 INFO L470 AbstractCegarLoop]: Abstraction has 5537 states and 7876 transitions. [2022-01-31 22:36:27,095 INFO L471 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) [2022-01-31 22:36:27,095 INFO L276 IsEmpty]: Start isEmpty. Operand 5537 states and 7876 transitions. [2022-01-31 22:36:27,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-31 22:36:27,096 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:36:27,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:36:27,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-31 22:36:27,096 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:36:27,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:36:27,096 INFO L85 PathProgramCache]: Analyzing trace with hash 5334329, now seen corresponding path program 1 times [2022-01-31 22:36:27,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:36:27,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691618520] [2022-01-31 22:36:27,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:36:27,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:36:27,111 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:36:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:27,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:36:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:27,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:36:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:27,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:36:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:27,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:36:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:27,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:36:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:27,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:36:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:27,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 22:36:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:27,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-31 22:36:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:27,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 22:36:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:27,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:36:27,590 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:36:27,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691618520] [2022-01-31 22:36:27,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1691618520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:36:27,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:36:27,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 22:36:27,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436021847] [2022-01-31 22:36:27,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:36:27,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 22:36:27,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:36:27,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 22:36:27,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-01-31 22:36:27,591 INFO L87 Difference]: Start difference. First operand 5537 states and 7876 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) [2022-01-31 22:36:37,678 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 [] [2022-01-31 22:36:44,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:36:44,374 INFO L93 Difference]: Finished difference Result 6465 states and 9406 transitions. [2022-01-31 22:36:44,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 22:36:44,375 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 [2022-01-31 22:36:44,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:36:44,388 INFO L225 Difference]: With dead ends: 6465 [2022-01-31 22:36:44,388 INFO L226 Difference]: Without dead ends: 6443 [2022-01-31 22:36:44,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2022-01-31 22:36:44,401 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 1699 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 5386 mSolverCounterSat, 762 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1737 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 6149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 762 IncrementalHoareTripleChecker+Valid, 5386 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-01-31 22:36:44,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1737 Valid, 1881 Invalid, 6149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [762 Valid, 5386 Invalid, 1 Unknown, 0 Unchecked, 12.3s Time] [2022-01-31 22:36:44,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6443 states. [2022-01-31 22:36:46,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6443 to 5536. [2022-01-31 22:36:46,778 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) [2022-01-31 22:36:46,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5536 states to 5536 states and 7873 transitions. [2022-01-31 22:36:46,788 INFO L78 Accepts]: Start accepts. Automaton has 5536 states and 7873 transitions. Word has length 84 [2022-01-31 22:36:46,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:36:46,789 INFO L470 AbstractCegarLoop]: Abstraction has 5536 states and 7873 transitions. [2022-01-31 22:36:46,789 INFO L471 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) [2022-01-31 22:36:46,789 INFO L276 IsEmpty]: Start isEmpty. Operand 5536 states and 7873 transitions. [2022-01-31 22:36:46,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-31 22:36:46,790 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:36:46,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:36:46,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-31 22:36:46,790 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:36:46,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:36:46,791 INFO L85 PathProgramCache]: Analyzing trace with hash 161999652, now seen corresponding path program 1 times [2022-01-31 22:36:46,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:36:46,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57589539] [2022-01-31 22:36:46,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:36:46,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:36:46,807 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:36:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:47,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:36:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:47,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:36:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:47,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:36:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:47,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:36:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:47,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:36:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:47,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:36:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:47,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 22:36:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:47,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 22:36:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:47,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 22:36:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:47,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:36:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:47,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 22:36:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:36:47,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:36:47,214 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:36:47,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57589539] [2022-01-31 22:36:47,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [57589539] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:36:47,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:36:47,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 22:36:47,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031353802] [2022-01-31 22:36:47,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:36:47,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 22:36:47,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:36:47,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 22:36:47,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-31 22:36:47,215 INFO L87 Difference]: Start difference. First operand 5536 states and 7873 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, (15), 10 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-01-31 22:36:55,104 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 [] [2022-01-31 22:37:01,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:37:01,143 INFO L93 Difference]: Finished difference Result 9779 states and 14168 transitions. [2022-01-31 22:37:01,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 22:37:01,144 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (15), 10 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 95 [2022-01-31 22:37:01,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:37:01,160 INFO L225 Difference]: With dead ends: 9779 [2022-01-31 22:37:01,161 INFO L226 Difference]: Without dead ends: 6463 [2022-01-31 22:37:01,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=245, Invalid=685, Unknown=0, NotChecked=0, Total=930 [2022-01-31 22:37:01,167 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 1647 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 3021 mSolverCounterSat, 723 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 3745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 3021 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-01-31 22:37:01,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1685 Valid, 1421 Invalid, 3745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 3021 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2022-01-31 22:37:01,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6463 states. [2022-01-31 22:37:03,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6463 to 5505. [2022-01-31 22:37:03,585 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) [2022-01-31 22:37:03,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5505 states to 5505 states and 7817 transitions. [2022-01-31 22:37:03,595 INFO L78 Accepts]: Start accepts. Automaton has 5505 states and 7817 transitions. Word has length 95 [2022-01-31 22:37:03,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:37:03,595 INFO L470 AbstractCegarLoop]: Abstraction has 5505 states and 7817 transitions. [2022-01-31 22:37:03,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (15), 10 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-01-31 22:37:03,596 INFO L276 IsEmpty]: Start isEmpty. Operand 5505 states and 7817 transitions. [2022-01-31 22:37:03,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-31 22:37:03,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:37:03,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:37:03,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-31 22:37:03,597 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:37:03,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:37:03,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1334190776, now seen corresponding path program 1 times [2022-01-31 22:37:03,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:37:03,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208594252] [2022-01-31 22:37:03,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:37:03,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:37:03,611 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:37:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:03,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:37:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:03,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:37:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:03,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:37:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:03,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:37:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:03,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:37:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:03,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:37:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:04,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 22:37:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:04,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-31 22:37:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:04,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-01-31 22:37:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:04,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:37:04,147 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:37:04,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208594252] [2022-01-31 22:37:04,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [208594252] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:37:04,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:37:04,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 22:37:04,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511820711] [2022-01-31 22:37:04,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:37:04,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 22:37:04,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:37:04,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 22:37:04,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-01-31 22:37:04,149 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) [2022-01-31 22:37:12,565 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 [] [2022-01-31 22:37:18,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:37:18,964 INFO L93 Difference]: Finished difference Result 11484 states and 16725 transitions. [2022-01-31 22:37:18,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 22:37:18,964 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 [2022-01-31 22:37:18,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:37:18,978 INFO L225 Difference]: With dead ends: 11484 [2022-01-31 22:37:18,978 INFO L226 Difference]: Without dead ends: 6486 [2022-01-31 22:37:18,987 INFO L932 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 [2022-01-31 22:37:18,987 INFO L933 BasicCegarLoop]: 637 mSDtfsCounter, 1633 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 4061 mSolverCounterSat, 707 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1668 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 4769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 4061 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:37:18,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1668 Valid, 1490 Invalid, 4769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 4061 Invalid, 1 Unknown, 0 Unchecked, 10.1s Time] [2022-01-31 22:37:18,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6486 states. [2022-01-31 22:37:21,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6486 to 5565. [2022-01-31 22:37:21,421 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) [2022-01-31 22:37:21,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5565 states to 5565 states and 7877 transitions. [2022-01-31 22:37:21,432 INFO L78 Accepts]: Start accepts. Automaton has 5565 states and 7877 transitions. Word has length 86 [2022-01-31 22:37:21,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:37:21,432 INFO L470 AbstractCegarLoop]: Abstraction has 5565 states and 7877 transitions. [2022-01-31 22:37:21,432 INFO L471 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) [2022-01-31 22:37:21,432 INFO L276 IsEmpty]: Start isEmpty. Operand 5565 states and 7877 transitions. [2022-01-31 22:37:21,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-31 22:37:21,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:37:21,434 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:37:21,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-31 22:37:21,434 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:37:21,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:37:21,434 INFO L85 PathProgramCache]: Analyzing trace with hash -680978953, now seen corresponding path program 1 times [2022-01-31 22:37:21,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:37:21,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394349157] [2022-01-31 22:37:21,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:37:21,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:37:21,449 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:37:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:21,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:37:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:21,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:37:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:21,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:37:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:21,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:37:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:21,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:37:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:21,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:37:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:21,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 22:37:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:21,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-31 22:37:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:22,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-01-31 22:37:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:22,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:37:22,050 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:37:22,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394349157] [2022-01-31 22:37:22,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [394349157] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:37:22,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:37:22,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 22:37:22,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101586249] [2022-01-31 22:37:22,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:37:22,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 22:37:22,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:37:22,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 22:37:22,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-01-31 22:37:22,051 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) [2022-01-31 22:37:34,484 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 [] [2022-01-31 22:37:42,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:37:42,273 INFO L93 Difference]: Finished difference Result 11606 states and 16808 transitions. [2022-01-31 22:37:42,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 22:37:42,274 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 [2022-01-31 22:37:42,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:37:42,288 INFO L225 Difference]: With dead ends: 11606 [2022-01-31 22:37:42,288 INFO L226 Difference]: Without dead ends: 6567 [2022-01-31 22:37:42,297 INFO L932 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 [2022-01-31 22:37:42,298 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 1191 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 6418 mSolverCounterSat, 491 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 6910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 6418 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:37:42,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1226 Valid, 1874 Invalid, 6910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 6418 Invalid, 1 Unknown, 0 Unchecked, 15.1s Time] [2022-01-31 22:37:42,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6567 states. [2022-01-31 22:37:44,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6567 to 5586. [2022-01-31 22:37:44,797 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) [2022-01-31 22:37:44,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5586 states to 5586 states and 7898 transitions. [2022-01-31 22:37:44,809 INFO L78 Accepts]: Start accepts. Automaton has 5586 states and 7898 transitions. Word has length 86 [2022-01-31 22:37:44,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:37:44,809 INFO L470 AbstractCegarLoop]: Abstraction has 5586 states and 7898 transitions. [2022-01-31 22:37:44,809 INFO L471 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) [2022-01-31 22:37:44,809 INFO L276 IsEmpty]: Start isEmpty. Operand 5586 states and 7898 transitions. [2022-01-31 22:37:44,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-31 22:37:44,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:37:44,811 INFO L514 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] [2022-01-31 22:37:44,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-31 22:37:44,811 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:37:44,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:37:44,811 INFO L85 PathProgramCache]: Analyzing trace with hash -520968227, now seen corresponding path program 1 times [2022-01-31 22:37:44,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:37:44,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664184366] [2022-01-31 22:37:44,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:37:44,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:37:44,827 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:37:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:45,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:37:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:45,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:37:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:45,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:37:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:45,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:37:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:45,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:37:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:45,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:37:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:45,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 22:37:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:45,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-31 22:37:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:45,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-31 22:37:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:45,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-31 22:37:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:45,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 22:37:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:37:45,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 22:37:45,420 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:37:45,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664184366] [2022-01-31 22:37:45,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [664184366] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:37:45,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:37:45,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-31 22:37:45,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240568855] [2022-01-31 22:37:45,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:37:45,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 22:37:45,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:37:45,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 22:37:45,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-01-31 22:37:45,421 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) [2022-01-31 22:37:55,828 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 [] [2022-01-31 22:38:03,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:38:03,118 INFO L93 Difference]: Finished difference Result 6524 states and 9455 transitions. [2022-01-31 22:38:03,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 22:38:03,118 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 [2022-01-31 22:38:03,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:38:03,130 INFO L225 Difference]: With dead ends: 6524 [2022-01-31 22:38:03,130 INFO L226 Difference]: Without dead ends: 6508 [2022-01-31 22:38:03,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2022-01-31 22:38:03,132 INFO L933 BasicCegarLoop]: 671 mSDtfsCounter, 2182 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 6247 mSolverCounterSat, 966 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2220 SdHoareTripleChecker+Valid, 2208 SdHoareTripleChecker+Invalid, 7214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 966 IncrementalHoareTripleChecker+Valid, 6247 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-01-31 22:38:03,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2220 Valid, 2208 Invalid, 7214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [966 Valid, 6247 Invalid, 1 Unknown, 0 Unchecked, 12.9s Time] [2022-01-31 22:38:03,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2022-01-31 22:38:05,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 5586. [2022-01-31 22:38:05,653 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) [2022-01-31 22:38:05,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5586 states to 5586 states and 7898 transitions. [2022-01-31 22:38:05,664 INFO L78 Accepts]: Start accepts. Automaton has 5586 states and 7898 transitions. Word has length 88 [2022-01-31 22:38:05,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:38:05,664 INFO L470 AbstractCegarLoop]: Abstraction has 5586 states and 7898 transitions. [2022-01-31 22:38:05,664 INFO L471 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) [2022-01-31 22:38:05,664 INFO L276 IsEmpty]: Start isEmpty. Operand 5586 states and 7898 transitions. [2022-01-31 22:38:05,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-31 22:38:05,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:38:05,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:38:05,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-31 22:38:05,666 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:38:05,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:38:05,666 INFO L85 PathProgramCache]: Analyzing trace with hash -243689622, now seen corresponding path program 1 times [2022-01-31 22:38:05,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:38:05,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438597461] [2022-01-31 22:38:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:38:05,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:38:05,682 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:38:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:05,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:38:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:05,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:38:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:06,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:38:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:06,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:38:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:06,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:38:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:06,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:38:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:06,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 22:38:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:06,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-31 22:38:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:06,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:38:06,348 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:38:06,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438597461] [2022-01-31 22:38:06,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [438597461] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:38:06,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:38:06,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-31 22:38:06,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912371714] [2022-01-31 22:38:06,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:38:06,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 22:38:06,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:38:06,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 22:38:06,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-01-31 22:38:06,350 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) [2022-01-31 22:38:17,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:38:25,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:38:25,089 INFO L93 Difference]: Finished difference Result 6511 states and 9420 transitions. [2022-01-31 22:38:25,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 22:38:25,089 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 [2022-01-31 22:38:25,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:38:25,101 INFO L225 Difference]: With dead ends: 6511 [2022-01-31 22:38:25,101 INFO L226 Difference]: Without dead ends: 6488 [2022-01-31 22:38:25,103 INFO L932 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 [2022-01-31 22:38:25,103 INFO L933 BasicCegarLoop]: 664 mSDtfsCounter, 2095 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 6776 mSolverCounterSat, 960 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2134 SdHoareTripleChecker+Valid, 2386 SdHoareTripleChecker+Invalid, 7737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 960 IncrementalHoareTripleChecker+Valid, 6776 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-01-31 22:38:25,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2134 Valid, 2386 Invalid, 7737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [960 Valid, 6776 Invalid, 1 Unknown, 0 Unchecked, 13.7s Time] [2022-01-31 22:38:25,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6488 states. [2022-01-31 22:38:27,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6488 to 5582. [2022-01-31 22:38:27,612 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) [2022-01-31 22:38:27,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5582 states to 5582 states and 7892 transitions. [2022-01-31 22:38:27,621 INFO L78 Accepts]: Start accepts. Automaton has 5582 states and 7892 transitions. Word has length 85 [2022-01-31 22:38:27,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:38:27,639 INFO L470 AbstractCegarLoop]: Abstraction has 5582 states and 7892 transitions. [2022-01-31 22:38:27,639 INFO L471 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) [2022-01-31 22:38:27,639 INFO L276 IsEmpty]: Start isEmpty. Operand 5582 states and 7892 transitions. [2022-01-31 22:38:27,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-31 22:38:27,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:38:27,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:38:27,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-31 22:38:27,641 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:38:27,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:38:27,641 INFO L85 PathProgramCache]: Analyzing trace with hash -19498270, now seen corresponding path program 1 times [2022-01-31 22:38:27,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:38:27,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815419715] [2022-01-31 22:38:27,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:38:27,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:38:27,659 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:38:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:27,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:38:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:27,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:38:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:27,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:38:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:27,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:38:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:27,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:38:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:28,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:38:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:28,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 22:38:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:28,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-31 22:38:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:28,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:38:28,163 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:38:28,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815419715] [2022-01-31 22:38:28,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1815419715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:38:28,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:38:28,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-31 22:38:28,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217090751] [2022-01-31 22:38:28,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:38:28,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 22:38:28,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:38:28,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 22:38:28,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-01-31 22:38:28,165 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) [2022-01-31 22:38:40,448 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 [] [2022-01-31 22:38:48,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:38:48,577 INFO L93 Difference]: Finished difference Result 6507 states and 9414 transitions. [2022-01-31 22:38:48,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 22:38:48,577 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 [2022-01-31 22:38:48,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:38:48,589 INFO L225 Difference]: With dead ends: 6507 [2022-01-31 22:38:48,589 INFO L226 Difference]: Without dead ends: 6483 [2022-01-31 22:38:48,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2022-01-31 22:38:48,594 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 1652 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 7607 mSolverCounterSat, 697 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1691 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 8305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 697 IncrementalHoareTripleChecker+Valid, 7607 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2022-01-31 22:38:48,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1691 Valid, 2405 Invalid, 8305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [697 Valid, 7607 Invalid, 1 Unknown, 0 Unchecked, 15.5s Time] [2022-01-31 22:38:48,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6483 states. [2022-01-31 22:38:51,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6483 to 5577. [2022-01-31 22:38:51,160 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) [2022-01-31 22:38:51,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 7885 transitions. [2022-01-31 22:38:51,170 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 7885 transitions. Word has length 85 [2022-01-31 22:38:51,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:38:51,171 INFO L470 AbstractCegarLoop]: Abstraction has 5577 states and 7885 transitions. [2022-01-31 22:38:51,171 INFO L471 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) [2022-01-31 22:38:51,171 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 7885 transitions. [2022-01-31 22:38:51,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-31 22:38:51,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:38:51,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:38:51,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-31 22:38:51,172 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:38:51,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:38:51,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1377173641, now seen corresponding path program 1 times [2022-01-31 22:38:51,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:38:51,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204050605] [2022-01-31 22:38:51,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:38:51,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:38:51,189 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:38:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:51,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:38:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:51,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:38:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:51,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 22:38:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:51,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 22:38:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:51,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 22:38:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:51,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 22:38:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:51,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 22:38:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:51,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-31 22:38:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:51,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 22:38:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:51,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 22:38:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:38:51,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:38:51,739 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:38:51,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204050605] [2022-01-31 22:38:51,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [204050605] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:38:51,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:38:51,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-31 22:38:51,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971192681] [2022-01-31 22:38:51,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:38:51,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 22:38:51,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:38:51,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 22:38:51,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-01-31 22:38:51,743 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) [2022-01-31 22:38:57,850 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:39:00,012 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 22:39:07,215 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 []