/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:45:51,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:45:51,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:45:51,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 23:45:51,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 23:45:51,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 23:45:51,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 23:45:51,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 23:45:51,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 23:45:51,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 23:45:51,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 23:45:51,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 23:45:51,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:45:51,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:45:51,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:45:51,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:45:51,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:45:51,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:45:51,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:45:51,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:45:51,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:45:51,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:45:51,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:45:51,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:45:51,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 23:45:51,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 23:45:51,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 23:45:51,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 23:45:51,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 23:45:51,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 23:45:51,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 23:45:51,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 23:45:51,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 23:45:51,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 23:45:51,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 23:45:51,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 23:45:51,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 23:45:51,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 23:45:51,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:45:51,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:45:51,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:45:51,450 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-01-31 23:45:51,456 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:45:51,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:45:51,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:45:51,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:45:51,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:45:51,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:45:51,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:45:51,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:45:51,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:45:51,458 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:45:51,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:45:51,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:45:51,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:45:51,458 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:45:51,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:45:51,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:45:51,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:45:51,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:45:51,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:45:51,459 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-01-31 23:45:51,459 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:45:51,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:45:51,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:45:51,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:45:51,647 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:45:51,648 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:45:51,649 INFO L432 ainManager$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 23:45:51,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43878a852/595b66fd10024ba199fe5a26ca06e394/FLAGf7e0135f1 [2022-01-31 23:45:52,270 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:45:52,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-3.c [2022-01-31 23:45:52,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43878a852/595b66fd10024ba199fe5a26ca06e394/FLAGf7e0135f1 [2022-01-31 23:45:52,740 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43878a852/595b66fd10024ba199fe5a26ca06e394 [2022-01-31 23:45:52,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:45:52,742 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:45:52,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:45:52,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:45:52,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:45:52,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:45:52" (1/1) ... [2022-01-31 23:45:52,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2d2a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:45:52, skipping insertion in model container [2022-01-31 23:45:52,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:45:52" (1/1) ... [2022-01-31 23:45:52,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:45:52,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:45:53,291 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 23:45:53,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:45:53,620 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:45:53,667 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 23:45:53,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:45:54,015 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:45:54,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:45:54 WrapperNode [2022-01-31 23:45:54,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:45:54,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:45:54,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:45:54,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:45:54,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:45:54" (1/1) ... [2022-01-31 23:45:54,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:45:54" (1/1) ... [2022-01-31 23:45:54,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:45:54" (1/1) ... [2022-01-31 23:45:54,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:45:54" (1/1) ... [2022-01-31 23:45:54,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:45:54" (1/1) ... [2022-01-31 23:45:54,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:45:54" (1/1) ... [2022-01-31 23:45:54,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:45:54" (1/1) ... [2022-01-31 23:45:54,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:45:54,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:45:54,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:45:54,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:45:54,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:45:54" (1/1) ... [2022-01-31 23:45:54,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:45:54,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:45:54,303 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 23:45:54,311 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 23:45:54,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:45:54,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:45:54,343 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:45:54,343 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-01-31 23:45:54,343 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-01-31 23:45:54,343 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-01-31 23:45:54,343 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-01-31 23:45:54,343 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-01-31 23:45:54,343 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyUnload [2022-01-31 23:45:54,343 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyAddDevice [2022-01-31 23:45:54,343 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConfigCallBack [2022-01-31 23:45:54,344 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-01-31 23:45:54,344 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-01-31 23:45:54,344 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-01-31 23:45:54,344 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-01-31 23:45:54,344 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-01-31 23:45:54,345 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-01-31 23:45:54,345 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-01-31 23:45:54,345 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPower [2022-01-31 23:45:54,346 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyReadWrite [2022-01-31 23:45:54,346 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInterpretError [2022-01-31 23:45:54,346 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFinishOperation [2022-01-31 23:45:54,346 INFO L138 BoogieDeclarations]: Found implementation of procedure FlStartDrive [2022-01-31 23:45:54,346 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDatarateSpecifyConfigure [2022-01-31 23:45:54,346 INFO L138 BoogieDeclarations]: Found implementation of procedure FlRecalibrateDrive [2022-01-31 23:45:54,346 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDetermineMediaType [2022-01-31 23:45:54,346 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAllocateIoBuffer [2022-01-31 23:45:54,346 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFreeIoBuffer [2022-01-31 23:45:54,346 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyThread [2022-01-31 23:45:54,346 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConsolidateMediaTypeWithBootSector [2022-01-31 23:45:54,346 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckBootSector [2022-01-31 23:45:54,346 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWriteTrack [2022-01-31 23:45:54,346 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWrite [2022-01-31 23:45:54,346 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFormat [2022-01-31 23:45:54,346 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2022-01-31 23:45:54,347 INFO L138 BoogieDeclarations]: Found implementation of procedure FlIssueCommand [2022-01-31 23:45:54,347 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInitializeControllerHardware [2022-01-31 23:45:54,347 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-01-31 23:45:54,347 INFO L138 BoogieDeclarations]: Found implementation of procedure FlHdbit [2022-01-31 23:45:54,347 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-01-31 23:45:54,347 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCancelQueuedRequest [2022-01-31 23:45:54,347 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-01-31 23:45:54,347 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-01-31 23:45:54,347 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:45:54,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-01-31 23:45:54,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-01-31 23:45:54,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-01-31 23:45:54,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-01-31 23:45:54,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-01-31 23:45:54,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-01-31 23:45:54,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-01-31 23:45:54,348 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-01-31 23:45:54,348 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-01-31 23:45:54,348 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-01-31 23:45:54,348 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-01-31 23:45:54,348 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-01-31 23:45:54,348 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-01-31 23:45:54,348 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-01-31 23:45:54,348 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-01-31 23:45:54,348 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-01-31 23:45:54,348 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-01-31 23:45:54,348 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-01-31 23:45:54,348 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-01-31 23:45:54,348 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-01-31 23:45:54,348 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-01-31 23:45:54,348 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-01-31 23:45:54,348 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-01-31 23:45:54,349 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-01-31 23:45:54,349 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-01-31 23:45:54,349 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-01-31 23:45:54,349 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-01-31 23:45:54,349 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-01-31 23:45:54,349 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-01-31 23:45:54,349 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-01-31 23:45:54,349 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-01-31 23:45:54,349 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-01-31 23:45:54,349 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-01-31 23:45:54,350 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-01-31 23:45:54,350 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-01-31 23:45:54,350 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-01-31 23:45:54,350 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-01-31 23:45:54,350 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-01-31 23:45:54,350 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-01-31 23:45:54,350 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-01-31 23:45:54,351 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-01-31 23:45:54,351 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-01-31 23:45:54,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-01-31 23:45:54,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-01-31 23:45:54,351 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-01-31 23:45:54,351 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-01-31 23:45:54,352 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-01-31 23:45:54,352 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-01-31 23:45:54,352 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-01-31 23:45:54,352 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-01-31 23:45:54,352 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-01-31 23:45:54,352 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-01-31 23:45:54,352 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-01-31 23:45:54,352 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-01-31 23:45:54,352 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-01-31 23:45:54,352 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-01-31 23:45:54,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-01-31 23:45:54,353 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-01-31 23:45:54,353 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-01-31 23:45:54,353 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-01-31 23:45:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:45:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:45:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:45:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:45:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-01-31 23:45:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-01-31 23:45:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 23:45:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-01-31 23:45:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-01-31 23:45:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2022-01-31 23:45:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure swprintf [2022-01-31 23:45:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-01-31 23:45:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-01-31 23:45:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-01-31 23:45:54,354 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-01-31 23:45:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-01-31 23:45:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-01-31 23:45:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-01-31 23:45:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-01-31 23:45:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-01-31 23:45:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-01-31 23:45:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-01-31 23:45:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-01-31 23:45:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:45:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:45:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-01-31 23:45:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-01-31 23:45:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-01-31 23:45:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-01-31 23:45:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-01-31 23:45:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-01-31 23:45:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-01-31 23:45:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-01-31 23:45:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-01-31 23:45:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-01-31 23:45:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-01-31 23:45:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-01-31 23:45:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-01-31 23:45:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-01-31 23:45:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-01-31 23:45:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-01-31 23:45:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-01-31 23:45:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-01-31 23:45:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-01-31 23:45:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-01-31 23:45:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-01-31 23:45:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-01-31 23:45:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-01-31 23:45:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-01-31 23:45:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-01-31 23:45:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-01-31 23:45:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-01-31 23:45:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-01-31 23:45:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-01-31 23:45:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-01-31 23:45:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-01-31 23:45:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-01-31 23:45:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-01-31 23:45:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-01-31 23:45:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-01-31 23:45:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-01-31 23:45:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-01-31 23:45:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-01-31 23:45:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-01-31 23:45:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-01-31 23:45:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-01-31 23:45:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-01-31 23:45:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-01-31 23:45:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-01-31 23:45:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-01-31 23:45:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-01-31 23:45:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-01-31 23:45:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-01-31 23:45:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyUnload [2022-01-31 23:45:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure FlConfigCallBack [2022-01-31 23:45:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure FlInitializeControllerHardware [2022-01-31 23:45:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-01-31 23:45:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-01-31 23:45:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyReadWrite [2022-01-31 23:45:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure FlRecalibrateDrive [2022-01-31 23:45:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure FlDatarateSpecifyConfigure [2022-01-31 23:45:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure FlStartDrive [2022-01-31 23:45:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure FlFinishOperation [2022-01-31 23:45:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure FlDetermineMediaType [2022-01-31 23:45:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyThread [2022-01-31 23:45:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWrite [2022-01-31 23:45:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure FlFormat [2022-01-31 23:45:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure FlIssueCommand [2022-01-31 23:45:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2022-01-31 23:45:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-01-31 23:45:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure FlInterpretError [2022-01-31 23:45:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure FlAllocateIoBuffer [2022-01-31 23:45:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure FlFreeIoBuffer [2022-01-31 23:45:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure FlConsolidateMediaTypeWithBootSector [2022-01-31 23:45:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckBootSector [2022-01-31 23:45:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWriteTrack [2022-01-31 23:45:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-01-31 23:45:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyAddDevice [2022-01-31 23:45:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-01-31 23:45:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPower [2022-01-31 23:45:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-01-31 23:45:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-01-31 23:45:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-01-31 23:45:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-01-31 23:45:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCancelQueuedRequest [2022-01-31 23:45:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-01-31 23:45:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure FlHdbit [2022-01-31 23:45:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-01-31 23:45:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-01-31 23:45:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-31 23:45:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-31 23:45:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 23:45:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:45:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-01-31 23:45:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-01-31 23:45:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-01-31 23:45:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-31 23:45:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-01-31 23:45:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:45:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-01-31 23:45:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-01-31 23:45:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:45:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:45:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:45:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-01-31 23:45:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-01-31 23:45:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-01-31 23:45:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-01-31 23:45:54,953 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:45:54,956 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:45:54,977 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:45:55,024 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:45:55,024 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:45:55,024 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:45:55,030 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:45:55,030 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:45:56,908 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:45:56,915 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:45:56,915 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:45:56,916 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:45:56,930 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:45:56,930 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:45:56,935 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:45:56,942 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:45:56,942 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:45:56,987 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:45:56,997 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:45:56,997 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:45:56,997 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:45:57,007 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:45:57,008 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:45:57,008 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:45:57,021 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:45:57,022 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:45:57,076 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:45:57,161 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-01-31 23:45:57,161 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-01-31 23:45:57,234 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:45:57,245 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:45:57,245 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:45:57,246 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:45:57,251 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:45:57,251 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:45:57,252 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:45:57,260 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:45:57,261 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:45:57,270 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:45:57,274 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:45:57,275 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:45:57,275 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:45:57,279 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:45:57,279 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:46:04,075 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:46:04,093 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-01-31 23:46:04,093 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-01-31 23:46:04,141 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:46:06,560 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-01-31 23:46:06,560 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-01-31 23:46:06,874 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:46:06,878 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:46:06,878 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:46:06,941 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:46:06,969 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-01-31 23:46:06,969 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-01-31 23:46:06,971 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:46:07,103 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-01-31 23:46:07,103 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-01-31 23:46:07,104 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:46:07,161 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-01-31 23:46:07,161 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-01-31 23:46:16,577 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:46:16,580 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:46:16,580 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:46:16,757 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:46:16,760 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:46:16,760 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:46:16,775 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:46:19,043 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-01-31 23:46:19,043 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-01-31 23:46:19,079 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:46:19,273 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-01-31 23:46:19,273 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-01-31 23:46:19,274 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:46:19,290 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-01-31 23:46:19,290 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-01-31 23:46:19,290 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:46:19,319 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-01-31 23:46:19,319 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-01-31 23:46:19,321 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:46:19,329 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-01-31 23:46:19,329 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-01-31 23:46:19,365 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:46:19,368 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:46:19,368 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:46:19,377 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:46:19,382 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-01-31 23:46:19,382 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-01-31 23:46:19,382 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:46:19,448 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume !false; [2022-01-31 23:46:19,448 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume false; [2022-01-31 23:46:19,482 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-31 23:46:21,806 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2022-01-31 23:46:21,806 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2022-01-31 23:46:21,838 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:46:21,855 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:46:21,855 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2022-01-31 23:46:21,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:46:21 BoogieIcfgContainer [2022-01-31 23:46:21,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:46:21,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:46:21,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:46:21,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:46:21,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:45:52" (1/3) ... [2022-01-31 23:46:21,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590506f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:46:21, skipping insertion in model container [2022-01-31 23:46:21,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:45:54" (2/3) ... [2022-01-31 23:46:21,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590506f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:46:21, skipping insertion in model container [2022-01-31 23:46:21,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:46:21" (3/3) ... [2022-01-31 23:46:21,868 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-3.c [2022-01-31 23:46:21,872 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:46:21,872 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:46:21,902 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:46:21,906 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=QVASR [2022-01-31 23:46:21,907 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:46:21,933 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 23:46:21,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-31 23:46:21,939 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:46:21,940 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 23:46:21,940 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:46:21,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:46:21,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1208806804, now seen corresponding path program 1 times [2022-01-31 23:46:21,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:46:21,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621236272] [2022-01-31 23:46:21,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:46:21,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:46:22,029 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:46:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:22,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:46:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:22,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:46:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:22,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:46:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:22,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:46:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:22,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:46:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:22,697 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 23:46:22,698 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:46:22,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621236272] [2022-01-31 23:46:22,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [621236272] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:46:22,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:46:22,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 23:46:22,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652327822] [2022-01-31 23:46:22,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:46:22,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 23:46:22,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:46:22,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 23:46:22,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-31 23:46:22,724 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 23:46:30,347 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:46:31,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:46:31,765 INFO L93 Difference]: Finished difference Result 1453 states and 2231 transitions. [2022-01-31 23:46:31,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 23:46:31,767 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 23:46:31,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:46:31,780 INFO L225 Difference]: With dead ends: 1453 [2022-01-31 23:46:31,781 INFO L226 Difference]: Without dead ends: 858 [2022-01-31 23:46:31,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-01-31 23:46:31,791 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 1345 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 3102 mSolverCounterSat, 617 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 3720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 3102 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-01-31 23:46:31,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1379 Valid, 1283 Invalid, 3720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [617 Valid, 3102 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2022-01-31 23:46:31,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2022-01-31 23:46:31,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 670. [2022-01-31 23:46:31,908 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 23:46:31,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 931 transitions. [2022-01-31 23:46:31,913 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 931 transitions. Word has length 37 [2022-01-31 23:46:31,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:46:31,914 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 931 transitions. [2022-01-31 23:46:31,914 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 23:46:31,914 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 931 transitions. [2022-01-31 23:46:31,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-31 23:46:31,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:46:31,916 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 23:46:31,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:46:31,916 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:46:31,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:46:31,917 INFO L85 PathProgramCache]: Analyzing trace with hash 171558063, now seen corresponding path program 1 times [2022-01-31 23:46:31,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:46:31,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683935530] [2022-01-31 23:46:31,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:46:31,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:46:31,970 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:46:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:32,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:46:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:32,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:46:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:32,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:46:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:32,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:46:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:32,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:46:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:32,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 23:46:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:32,453 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 23:46:32,453 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:46:32,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683935530] [2022-01-31 23:46:32,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [683935530] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:46:32,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:46:32,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 23:46:32,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959658762] [2022-01-31 23:46:32,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:46:32,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 23:46:32,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:46:32,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 23:46:32,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-31 23:46:32,456 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 23:46:39,068 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 23:46:44,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:46:44,057 INFO L93 Difference]: Finished difference Result 1951 states and 2856 transitions. [2022-01-31 23:46:44,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 23:46:44,069 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 23:46:44,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:46:44,077 INFO L225 Difference]: With dead ends: 1951 [2022-01-31 23:46:44,077 INFO L226 Difference]: Without dead ends: 1471 [2022-01-31 23:46:44,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-01-31 23:46:44,080 INFO L933 BasicCegarLoop]: 940 mSDtfsCounter, 3479 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 3508 mSolverCounterSat, 1402 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3520 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 4911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1402 IncrementalHoareTripleChecker+Valid, 3508 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-01-31 23:46:44,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3520 Valid, 1665 Invalid, 4911 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1402 Valid, 3508 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-01-31 23:46:44,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2022-01-31 23:46:44,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1230. [2022-01-31 23:46:44,257 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 23:46:44,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1762 transitions. [2022-01-31 23:46:44,263 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1762 transitions. Word has length 42 [2022-01-31 23:46:44,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:46:44,264 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 1762 transitions. [2022-01-31 23:46:44,264 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 23:46:44,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1762 transitions. [2022-01-31 23:46:44,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-31 23:46:44,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:46:44,266 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 23:46:44,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:46:44,266 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:46:44,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:46:44,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1220689, now seen corresponding path program 1 times [2022-01-31 23:46:44,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:46:44,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999440257] [2022-01-31 23:46:44,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:46:44,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:46:44,280 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:46:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:44,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:46:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:44,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:46:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:44,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:46:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:44,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:46:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:44,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:46:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:44,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 23:46:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:44,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 23:46:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:44,767 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 23:46:44,767 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:46:44,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999440257] [2022-01-31 23:46:44,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1999440257] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:46:44,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:46:44,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 23:46:44,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906422936] [2022-01-31 23:46:44,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:46:44,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 23:46:44,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:46:44,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 23:46:44,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-31 23:46:44,769 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 23:46:50,692 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 23:46:54,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:46:54,483 INFO L93 Difference]: Finished difference Result 2279 states and 3379 transitions. [2022-01-31 23:46:54,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 23:46:54,484 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 23:46:54,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:46:54,494 INFO L225 Difference]: With dead ends: 2279 [2022-01-31 23:46:54,494 INFO L226 Difference]: Without dead ends: 2260 [2022-01-31 23:46:54,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-01-31 23:46:54,496 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 3868 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 2855 mSolverCounterSat, 1489 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3928 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 4345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1489 IncrementalHoareTripleChecker+Valid, 2855 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-01-31 23:46:54,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3928 Valid, 1301 Invalid, 4345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1489 Valid, 2855 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2022-01-31 23:46:54,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2022-01-31 23:46:54,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 1905. [2022-01-31 23:46:54,746 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 23:46:54,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2769 transitions. [2022-01-31 23:46:54,754 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2769 transitions. Word has length 54 [2022-01-31 23:46:54,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:46:54,754 INFO L470 AbstractCegarLoop]: Abstraction has 1905 states and 2769 transitions. [2022-01-31 23:46:54,755 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 23:46:54,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2769 transitions. [2022-01-31 23:46:54,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-31 23:46:54,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:46:54,757 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 23:46:54,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 23:46:54,757 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:46:54,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:46:54,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1955103331, now seen corresponding path program 1 times [2022-01-31 23:46:54,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:46:54,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432761685] [2022-01-31 23:46:54,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:46:54,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:46:54,767 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:46:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:55,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:46:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:55,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:46:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:55,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:46:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:55,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:46:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:55,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:46:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:55,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 23:46:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:46:55,252 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 23:46:55,253 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:46:55,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432761685] [2022-01-31 23:46:55,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1432761685] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:46:55,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:46:55,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 23:46:55,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388654105] [2022-01-31 23:46:55,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:46:55,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 23:46:55,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:46:55,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 23:46:55,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-31 23:46:55,257 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 23:46:59,722 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:01,844 WARN L534 Checker$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 23:47:03,939 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:08,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:47:10,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:47:10,179 INFO L93 Difference]: Finished difference Result 2254 states and 3363 transitions. [2022-01-31 23:47:10,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 23:47:10,180 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 23:47:10,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:47:10,190 INFO L225 Difference]: With dead ends: 2254 [2022-01-31 23:47:10,190 INFO L226 Difference]: Without dead ends: 2250 [2022-01-31 23:47:10,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-01-31 23:47:10,192 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 1720 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 3118 mSolverCounterSat, 754 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 3876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 754 IncrementalHoareTripleChecker+Valid, 3118 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-01-31 23:47:10,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 1278 Invalid, 3876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [754 Valid, 3118 Invalid, 4 Unknown, 0 Unchecked, 13.9s Time] [2022-01-31 23:47:10,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2022-01-31 23:47:10,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 1942. [2022-01-31 23:47:10,449 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 23:47:10,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 2820 transitions. [2022-01-31 23:47:10,457 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 2820 transitions. Word has length 55 [2022-01-31 23:47:10,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:47:10,457 INFO L470 AbstractCegarLoop]: Abstraction has 1942 states and 2820 transitions. [2022-01-31 23:47:10,457 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 23:47:10,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 2820 transitions. [2022-01-31 23:47:10,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-31 23:47:10,460 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:47:10,460 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 23:47:10,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 23:47:10,460 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:47:10,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:47:10,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1599289490, now seen corresponding path program 1 times [2022-01-31 23:47:10,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:47:10,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244761178] [2022-01-31 23:47:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:47:10,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:47:10,472 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:47:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:10,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:47:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:10,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:47:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:10,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:47:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:10,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:47:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:10,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:47:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:10,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 23:47:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:10,899 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 23:47:10,900 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:47:10,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244761178] [2022-01-31 23:47:10,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [244761178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:47:10,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:47:10,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 23:47:10,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519775764] [2022-01-31 23:47:10,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:47:10,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 23:47:10,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:47:10,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 23:47:10,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-31 23:47:10,902 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 23:47:17,621 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 23:47:22,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:47:22,664 INFO L93 Difference]: Finished difference Result 3881 states and 5849 transitions. [2022-01-31 23:47:22,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 23:47:22,664 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 23:47:22,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:47:22,682 INFO L225 Difference]: With dead ends: 3881 [2022-01-31 23:47:22,682 INFO L226 Difference]: Without dead ends: 3878 [2022-01-31 23:47:22,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-01-31 23:47:22,686 INFO L933 BasicCegarLoop]: 1153 mSDtfsCounter, 2146 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 4387 mSolverCounterSat, 912 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2192 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 5300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 912 IncrementalHoareTripleChecker+Valid, 4387 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:47:22,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2192 Valid, 1874 Invalid, 5300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [912 Valid, 4387 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2022-01-31 23:47:22,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2022-01-31 23:47:23,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3105. [2022-01-31 23:47:23,144 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 23:47:23,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3105 states to 3105 states and 4524 transitions. [2022-01-31 23:47:23,158 INFO L78 Accepts]: Start accepts. Automaton has 3105 states and 4524 transitions. Word has length 55 [2022-01-31 23:47:23,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:47:23,159 INFO L470 AbstractCegarLoop]: Abstraction has 3105 states and 4524 transitions. [2022-01-31 23:47:23,159 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 23:47:23,159 INFO L276 IsEmpty]: Start isEmpty. Operand 3105 states and 4524 transitions. [2022-01-31 23:47:23,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-31 23:47:23,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:47:23,160 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 23:47:23,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 23:47:23,160 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:47:23,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:47:23,161 INFO L85 PathProgramCache]: Analyzing trace with hash 2095199445, now seen corresponding path program 1 times [2022-01-31 23:47:23,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:47:23,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358199153] [2022-01-31 23:47:23,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:47:23,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:47:23,171 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:47:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:23,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:47:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:23,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:47:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:23,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:47:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:23,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:47:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:23,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:47:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:23,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 23:47:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:23,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:47:23,673 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:47:23,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358199153] [2022-01-31 23:47:23,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1358199153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:47:23,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:47:23,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 23:47:23,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610921960] [2022-01-31 23:47:23,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:47:23,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 23:47:23,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:47:23,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 23:47:23,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-01-31 23:47:23,675 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 23:47:31,892 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 23:47:41,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:47:41,091 INFO L93 Difference]: Finished difference Result 6653 states and 9861 transitions. [2022-01-31 23:47:41,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-31 23:47:41,092 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 23:47:41,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:47:41,108 INFO L225 Difference]: With dead ends: 6653 [2022-01-31 23:47:41,109 INFO L226 Difference]: Without dead ends: 3833 [2022-01-31 23:47:41,119 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 23:47:41,120 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 5008 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 6698 mSolverCounterSat, 2192 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5054 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 8891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2192 IncrementalHoareTripleChecker+Valid, 6698 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:47:41,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5054 Valid, 2055 Invalid, 8891 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2192 Valid, 6698 Invalid, 1 Unknown, 0 Unchecked, 14.3s Time] [2022-01-31 23:47:41,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2022-01-31 23:47:41,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 3099. [2022-01-31 23:47:41,615 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 23:47:41,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 4510 transitions. [2022-01-31 23:47:41,627 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 4510 transitions. Word has length 56 [2022-01-31 23:47:41,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:47:41,627 INFO L470 AbstractCegarLoop]: Abstraction has 3099 states and 4510 transitions. [2022-01-31 23:47:41,627 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 23:47:41,627 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 4510 transitions. [2022-01-31 23:47:41,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-31 23:47:41,628 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:47:41,629 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 23:47:41,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 23:47:41,629 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:47:41,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:47:41,629 INFO L85 PathProgramCache]: Analyzing trace with hash 2082718779, now seen corresponding path program 1 times [2022-01-31 23:47:41,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:47:41,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116099222] [2022-01-31 23:47:41,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:47:41,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:47:41,642 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:47:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:41,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:47:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:41,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:47:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:41,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:47:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:42,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:47:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:42,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:47:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:42,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 23:47:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:42,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 23:47:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:42,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:47:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:42,169 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 23:47:42,169 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:47:42,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116099222] [2022-01-31 23:47:42,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [116099222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:47:42,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:47:42,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 23:47:42,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659053460] [2022-01-31 23:47:42,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:47:42,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 23:47:42,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:47:42,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 23:47:42,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-01-31 23:47:42,171 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 23:47:49,828 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 23:47:55,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:47:55,414 INFO L93 Difference]: Finished difference Result 4462 states and 6724 transitions. [2022-01-31 23:47:55,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 23:47:55,414 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 23:47:55,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:47:55,428 INFO L225 Difference]: With dead ends: 4462 [2022-01-31 23:47:55,428 INFO L226 Difference]: Without dead ends: 4457 [2022-01-31 23:47:55,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2022-01-31 23:47:55,430 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 2954 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 4423 mSolverCounterSat, 1423 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s 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, 11.4s IncrementalHoareTripleChecker+Time [2022-01-31 23:47:55,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2988 Valid, 2028 Invalid, 5847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1423 Valid, 4423 Invalid, 1 Unknown, 0 Unchecked, 11.4s Time] [2022-01-31 23:47:55,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4457 states. [2022-01-31 23:47:55,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4457 to 3755. [2022-01-31 23:47:56,002 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 23:47:56,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5489 transitions. [2022-01-31 23:47:56,013 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5489 transitions. Word has length 56 [2022-01-31 23:47:56,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:47:56,013 INFO L470 AbstractCegarLoop]: Abstraction has 3755 states and 5489 transitions. [2022-01-31 23:47:56,013 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 23:47:56,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5489 transitions. [2022-01-31 23:47:56,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-31 23:47:56,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:47:56,015 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 23:47:56,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 23:47:56,015 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:47:56,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:47:56,015 INFO L85 PathProgramCache]: Analyzing trace with hash 590370335, now seen corresponding path program 1 times [2022-01-31 23:47:56,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:47:56,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188058374] [2022-01-31 23:47:56,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:47:56,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:47:56,025 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:47:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:56,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:47:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:56,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:47:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:56,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:47:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:56,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:47:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:56,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:47:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:56,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 23:47:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:56,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 23:47:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:56,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:47:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:47:56,510 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 23:47:56,510 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:47:56,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188058374] [2022-01-31 23:47:56,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [188058374] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:47:56,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:47:56,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 23:47:56,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578421917] [2022-01-31 23:47:56,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:47:56,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 23:47:56,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:47:56,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 23:47:56,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-01-31 23:47:56,511 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 23:48:04,613 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 23:48:10,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:48:10,092 INFO L93 Difference]: Finished difference Result 4457 states and 6713 transitions. [2022-01-31 23:48:10,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 23:48:10,093 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 23:48:10,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:48:10,108 INFO L225 Difference]: With dead ends: 4457 [2022-01-31 23:48:10,108 INFO L226 Difference]: Without dead ends: 4451 [2022-01-31 23:48:10,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 23:48:10,110 INFO L933 BasicCegarLoop]: 1033 mSDtfsCounter, 4616 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 4435 mSolverCounterSat, 2199 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4665 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 6635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2199 IncrementalHoareTripleChecker+Valid, 4435 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-01-31 23:48:10,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4665 Valid, 1836 Invalid, 6635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2199 Valid, 4435 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2022-01-31 23:48:10,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2022-01-31 23:48:10,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 3755. [2022-01-31 23:48:10,726 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 23:48:10,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5488 transitions. [2022-01-31 23:48:10,737 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5488 transitions. Word has length 57 [2022-01-31 23:48:10,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:48:10,737 INFO L470 AbstractCegarLoop]: Abstraction has 3755 states and 5488 transitions. [2022-01-31 23:48:10,737 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 23:48:10,737 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5488 transitions. [2022-01-31 23:48:10,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-31 23:48:10,738 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:48:10,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:48:10,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 23:48:10,738 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:48:10,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:48:10,739 INFO L85 PathProgramCache]: Analyzing trace with hash 259939624, now seen corresponding path program 1 times [2022-01-31 23:48:10,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:48:10,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342238522] [2022-01-31 23:48:10,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:48:10,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:48:10,749 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:48:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:10,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:48:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:11,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:48:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:11,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:48:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:11,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:48:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:11,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:48:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:11,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 23:48:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:11,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 23:48:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:11,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:48:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:11,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:48:11,230 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:48:11,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342238522] [2022-01-31 23:48:11,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1342238522] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:48:11,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:48:11,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 23:48:11,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733010205] [2022-01-31 23:48:11,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:48:11,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 23:48:11,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:48:11,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 23:48:11,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-01-31 23:48:11,233 INFO L87 Difference]: Start difference. First operand 3755 states and 5488 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 23:48:16,938 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:19,030 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:21,123 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:48:26,044 WARN L534 Checker$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 23:48:32,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:48:32,476 INFO L93 Difference]: Finished difference Result 4517 states and 6805 transitions. [2022-01-31 23:48:32,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 23:48:32,476 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2022-01-31 23:48:32,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:48:32,492 INFO L225 Difference]: With dead ends: 4517 [2022-01-31 23:48:32,492 INFO L226 Difference]: Without dead ends: 4511 [2022-01-31 23:48:32,494 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 23:48:32,494 INFO L933 BasicCegarLoop]: 1029 mSDtfsCounter, 4047 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 4969 mSolverCounterSat, 1954 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4095 SdHoareTripleChecker+Valid, 1930 SdHoareTripleChecker+Invalid, 6927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1954 IncrementalHoareTripleChecker+Valid, 4969 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:48:32,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4095 Valid, 1930 Invalid, 6927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1954 Valid, 4969 Invalid, 4 Unknown, 0 Unchecked, 18.1s Time] [2022-01-31 23:48:32,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4511 states. [2022-01-31 23:48:33,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4511 to 3793. [2022-01-31 23:48:33,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3793 states, 2990 states have (on average 1.4361204013377926) internal successors, (4294), 3059 states have internal predecessors, (4294), 502 states have call successors, (502), 260 states have call predecessors, (502), 300 states have return successors, (753), 491 states have call predecessors, (753), 486 states have call successors, (753) [2022-01-31 23:48:33,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3793 states to 3793 states and 5549 transitions. [2022-01-31 23:48:33,217 INFO L78 Accepts]: Start accepts. Automaton has 3793 states and 5549 transitions. Word has length 58 [2022-01-31 23:48:33,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:48:33,217 INFO L470 AbstractCegarLoop]: Abstraction has 3793 states and 5549 transitions. [2022-01-31 23:48:33,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 23:48:33,218 INFO L276 IsEmpty]: Start isEmpty. Operand 3793 states and 5549 transitions. [2022-01-31 23:48:33,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-31 23:48:33,219 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:48:33,219 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 23:48:33,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-31 23:48:33,219 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:48:33,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:48:33,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1749808949, now seen corresponding path program 1 times [2022-01-31 23:48:33,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:48:33,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633095286] [2022-01-31 23:48:33,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:48:33,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:48:33,230 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:48:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:33,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:48:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:33,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:48:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:33,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:48:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:33,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:48:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:33,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:48:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:33,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 23:48:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:33,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 23:48:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:33,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:48:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:33,761 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 23:48:33,762 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:48:33,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633095286] [2022-01-31 23:48:33,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1633095286] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:48:33,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:48:33,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 23:48:33,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040899710] [2022-01-31 23:48:33,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:48:33,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 23:48:33,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:48:33,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 23:48:33,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-01-31 23:48:33,764 INFO L87 Difference]: Start difference. First operand 3793 states and 5549 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 23:48:42,096 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 23:48:44,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:48:44,955 INFO L93 Difference]: Finished difference Result 4510 states and 6799 transitions. [2022-01-31 23:48:44,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 23:48:44,956 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 23:48:44,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:48:44,969 INFO L225 Difference]: With dead ends: 4510 [2022-01-31 23:48:44,969 INFO L226 Difference]: Without dead ends: 4493 [2022-01-31 23:48:44,973 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 23:48:44,973 INFO L933 BasicCegarLoop]: 735 mSDtfsCounter, 2256 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 4491 mSolverCounterSat, 980 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2295 SdHoareTripleChecker+Valid, 1879 SdHoareTripleChecker+Invalid, 5472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 980 IncrementalHoareTripleChecker+Valid, 4491 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-01-31 23:48:44,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2295 Valid, 1879 Invalid, 5472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [980 Valid, 4491 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-01-31 23:48:44,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4493 states. [2022-01-31 23:48:45,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4493 to 3791. [2022-01-31 23:48:45,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3791 states, 2989 states have (on average 1.43593174974908) internal successors, (4292), 3058 states have internal predecessors, (4292), 501 states have call successors, (501), 260 states have call predecessors, (501), 300 states have return successors, (752), 490 states have call predecessors, (752), 485 states have call successors, (752) [2022-01-31 23:48:45,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3791 states to 3791 states and 5545 transitions. [2022-01-31 23:48:45,681 INFO L78 Accepts]: Start accepts. Automaton has 3791 states and 5545 transitions. Word has length 60 [2022-01-31 23:48:45,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:48:45,681 INFO L470 AbstractCegarLoop]: Abstraction has 3791 states and 5545 transitions. [2022-01-31 23:48:45,681 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 23:48:45,681 INFO L276 IsEmpty]: Start isEmpty. Operand 3791 states and 5545 transitions. [2022-01-31 23:48:45,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-31 23:48:45,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:48:45,683 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 23:48:45,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 23:48:45,684 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:48:45,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:48:45,684 INFO L85 PathProgramCache]: Analyzing trace with hash -449310488, now seen corresponding path program 1 times [2022-01-31 23:48:45,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:48:45,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842619096] [2022-01-31 23:48:45,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:48:45,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:48:45,697 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:48:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:45,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:48:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:45,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:48:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:46,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:48:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:46,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:48:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:46,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:48:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:46,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 23:48:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:46,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 23:48:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:46,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:48:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:46,205 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 23:48:46,205 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:48:46,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842619096] [2022-01-31 23:48:46,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1842619096] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:48:46,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:48:46,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 23:48:46,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560415511] [2022-01-31 23:48:46,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:48:46,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 23:48:46,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:48:46,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 23:48:46,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-01-31 23:48:46,207 INFO L87 Difference]: Start difference. First operand 3791 states and 5545 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 23:48:53,905 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 23:48:57,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:48:57,000 INFO L93 Difference]: Finished difference Result 4508 states and 6795 transitions. [2022-01-31 23:48:57,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 23:48:57,001 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 23:48:57,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:48:57,013 INFO L225 Difference]: With dead ends: 4508 [2022-01-31 23:48:57,013 INFO L226 Difference]: Without dead ends: 4486 [2022-01-31 23:48:57,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-01-31 23:48:57,015 INFO L933 BasicCegarLoop]: 717 mSDtfsCounter, 2248 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 4675 mSolverCounterSat, 998 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2287 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 5674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 4675 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:48:57,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2287 Valid, 1789 Invalid, 5674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 4675 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2022-01-31 23:48:57,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2022-01-31 23:48:57,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 3784. [2022-01-31 23:48:57,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3784 states, 2985 states have (on average 1.436180904522613) internal successors, (4287), 3054 states have internal predecessors, (4287), 499 states have call successors, (499), 259 states have call predecessors, (499), 299 states have return successors, (750), 488 states have call predecessors, (750), 483 states have call successors, (750) [2022-01-31 23:48:57,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 5536 transitions. [2022-01-31 23:48:57,755 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 5536 transitions. Word has length 59 [2022-01-31 23:48:57,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:48:57,756 INFO L470 AbstractCegarLoop]: Abstraction has 3784 states and 5536 transitions. [2022-01-31 23:48:57,756 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 23:48:57,756 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 5536 transitions. [2022-01-31 23:48:57,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-31 23:48:57,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:48:57,757 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 23:48:57,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-31 23:48:57,757 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:48:57,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:48:57,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1939971839, now seen corresponding path program 1 times [2022-01-31 23:48:57,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:48:57,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653722555] [2022-01-31 23:48:57,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:48:57,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:48:57,767 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:48:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:57,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:48:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:57,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:48:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:58,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:48:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:58,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:48:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:58,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:48:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:58,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 23:48:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:58,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 23:48:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:58,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:48:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:48:58,150 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 23:48:58,151 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:48:58,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653722555] [2022-01-31 23:48:58,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [653722555] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:48:58,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:48:58,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 23:48:58,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393944691] [2022-01-31 23:48:58,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:48:58,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 23:48:58,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:48:58,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 23:48:58,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-01-31 23:48:58,152 INFO L87 Difference]: Start difference. First operand 3784 states and 5536 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 23:49:04,272 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 23:49:11,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:49:11,343 INFO L93 Difference]: Finished difference Result 12302 states and 18979 transitions. [2022-01-31 23:49:11,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-31 23:49:11,344 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 23:49:11,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:49:11,370 INFO L225 Difference]: With dead ends: 12302 [2022-01-31 23:49:11,370 INFO L226 Difference]: Without dead ends: 8762 [2022-01-31 23:49:11,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2022-01-31 23:49:11,387 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 3898 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 3721 mSolverCounterSat, 1754 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3958 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 5476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1754 IncrementalHoareTripleChecker+Valid, 3721 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-01-31 23:49:11,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3958 Valid, 1771 Invalid, 5476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1754 Valid, 3721 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2022-01-31 23:49:11,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8762 states. [2022-01-31 23:49:12,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8762 to 7553. [2022-01-31 23:49:12,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7553 states, 5959 states have (on average 1.4463836214129888) internal successors, (8619), 6145 states have internal predecessors, (8619), 1012 states have call successors, (1012), 479 states have call predecessors, (1012), 581 states have return successors, (1808), 964 states have call predecessors, (1808), 999 states have call successors, (1808) [2022-01-31 23:49:13,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7553 states to 7553 states and 11439 transitions. [2022-01-31 23:49:13,015 INFO L78 Accepts]: Start accepts. Automaton has 7553 states and 11439 transitions. Word has length 63 [2022-01-31 23:49:13,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:49:13,015 INFO L470 AbstractCegarLoop]: Abstraction has 7553 states and 11439 transitions. [2022-01-31 23:49:13,015 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 23:49:13,015 INFO L276 IsEmpty]: Start isEmpty. Operand 7553 states and 11439 transitions. [2022-01-31 23:49:13,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-31 23:49:13,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:49:13,016 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 23:49:13,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-31 23:49:13,017 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:49:13,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:49:13,017 INFO L85 PathProgramCache]: Analyzing trace with hash -858477288, now seen corresponding path program 1 times [2022-01-31 23:49:13,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:49:13,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54244259] [2022-01-31 23:49:13,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:49:13,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:49:13,028 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:49:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:13,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:49:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:13,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:49:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:13,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:49:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:13,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:49:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:13,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:49:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:13,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 23:49:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:13,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 23:49:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:13,423 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 23:49:13,423 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:49:13,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54244259] [2022-01-31 23:49:13,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [54244259] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:49:13,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:49:13,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-31 23:49:13,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707620754] [2022-01-31 23:49:13,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:49:13,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 23:49:13,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:49:13,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 23:49:13,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-31 23:49:13,425 INFO L87 Difference]: Start difference. First operand 7553 states and 11439 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 23:49:20,164 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 23:49:24,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:49:24,517 INFO L93 Difference]: Finished difference Result 15329 states and 23754 transitions. [2022-01-31 23:49:24,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 23:49:24,518 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 23:49:24,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:49:24,549 INFO L225 Difference]: With dead ends: 15329 [2022-01-31 23:49:24,550 INFO L226 Difference]: Without dead ends: 8851 [2022-01-31 23:49:24,576 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 23:49:24,576 INFO L933 BasicCegarLoop]: 711 mSDtfsCounter, 1748 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 2935 mSolverCounterSat, 782 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1784 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 3718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 782 IncrementalHoareTripleChecker+Valid, 2935 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-01-31 23:49:24,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1784 Valid, 1292 Invalid, 3718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [782 Valid, 2935 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2022-01-31 23:49:24,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8851 states. [2022-01-31 23:49:26,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8851 to 7693. [2022-01-31 23:49:26,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7693 states, 6099 states have (on average 1.4341695359895066) internal successors, (8747), 6285 states have internal predecessors, (8747), 1012 states have call successors, (1012), 479 states have call predecessors, (1012), 581 states have return successors, (1808), 964 states have call predecessors, (1808), 999 states have call successors, (1808) [2022-01-31 23:49:26,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7693 states to 7693 states and 11567 transitions. [2022-01-31 23:49:26,302 INFO L78 Accepts]: Start accepts. Automaton has 7693 states and 11567 transitions. Word has length 61 [2022-01-31 23:49:26,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:49:26,302 INFO L470 AbstractCegarLoop]: Abstraction has 7693 states and 11567 transitions. [2022-01-31 23:49:26,302 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 23:49:26,303 INFO L276 IsEmpty]: Start isEmpty. Operand 7693 states and 11567 transitions. [2022-01-31 23:49:26,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-31 23:49:26,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:49:26,304 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 23:49:26,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-31 23:49:26,304 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:49:26,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:49:26,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1733980064, now seen corresponding path program 1 times [2022-01-31 23:49:26,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:49:26,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122922934] [2022-01-31 23:49:26,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:49:26,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:49:26,316 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:49:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:26,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:49:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:26,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:49:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:26,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:49:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:26,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:49:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:26,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:49:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:26,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 23:49:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:26,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 23:49:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:26,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-31 23:49:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:26,826 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 23:49:26,826 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:49:26,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122922934] [2022-01-31 23:49:26,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1122922934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:49:26,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:49:26,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 23:49:26,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575629493] [2022-01-31 23:49:26,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:49:26,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 23:49:26,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:49:26,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 23:49:26,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-01-31 23:49:26,828 INFO L87 Difference]: Start difference. First operand 7693 states and 11567 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-01-31 23:49:32,056 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:49:34,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:49:36,252 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:49:41,338 WARN L534 Checker$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 23:49:46,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:49:46,474 INFO L93 Difference]: Finished difference Result 8779 states and 13521 transitions. [2022-01-31 23:49:46,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 23:49:46,474 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 64 [2022-01-31 23:49:46,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:49:46,504 INFO L225 Difference]: With dead ends: 8779 [2022-01-31 23:49:46,504 INFO L226 Difference]: Without dead ends: 8763 [2022-01-31 23:49:46,510 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 23:49:46,510 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 2057 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 4546 mSolverCounterSat, 973 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2095 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 5523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 973 IncrementalHoareTripleChecker+Valid, 4546 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-01-31 23:49:46,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2095 Valid, 1754 Invalid, 5523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [973 Valid, 4546 Invalid, 4 Unknown, 0 Unchecked, 16.6s Time] [2022-01-31 23:49:46,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8763 states. [2022-01-31 23:49:48,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8763 to 7699. [2022-01-31 23:49:48,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7699 states, 6102 states have (on average 1.4339560799737792) internal successors, (8750), 6291 states have internal predecessors, (8750), 1012 states have call successors, (1012), 479 states have call predecessors, (1012), 584 states have return successors, (1830), 964 states have call predecessors, (1830), 999 states have call successors, (1830) [2022-01-31 23:49:48,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7699 states to 7699 states and 11592 transitions. [2022-01-31 23:49:48,307 INFO L78 Accepts]: Start accepts. Automaton has 7699 states and 11592 transitions. Word has length 64 [2022-01-31 23:49:48,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:49:48,307 INFO L470 AbstractCegarLoop]: Abstraction has 7699 states and 11592 transitions. [2022-01-31 23:49:48,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-01-31 23:49:48,308 INFO L276 IsEmpty]: Start isEmpty. Operand 7699 states and 11592 transitions. [2022-01-31 23:49:48,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-31 23:49:48,309 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:49:48,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:49:48,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-31 23:49:48,309 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:49:48,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:49:48,310 INFO L85 PathProgramCache]: Analyzing trace with hash 326599203, now seen corresponding path program 1 times [2022-01-31 23:49:48,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:49:48,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325882217] [2022-01-31 23:49:48,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:49:48,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:49:48,321 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:49:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:48,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:49:48,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:48,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:49:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:48,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:49:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:48,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:49:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:48,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:49:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:48,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 23:49:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:48,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 23:49:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:48,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-31 23:49:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:49:48,842 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 23:49:48,842 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:49:48,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325882217] [2022-01-31 23:49:48,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1325882217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:49:48,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:49:48,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 23:49:48,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453787613] [2022-01-31 23:49:48,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:49:48,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 23:49:48,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:49:48,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 23:49:48,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-01-31 23:49:48,843 INFO L87 Difference]: Start difference. First operand 7699 states and 11592 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-01-31 23:49:56,218 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 23:50:01,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:50:01,092 INFO L93 Difference]: Finished difference Result 8771 states and 13495 transitions. [2022-01-31 23:50:01,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 23:50:01,093 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 65 [2022-01-31 23:50:01,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:50:01,119 INFO L225 Difference]: With dead ends: 8771 [2022-01-31 23:50:01,119 INFO L226 Difference]: Without dead ends: 8751 [2022-01-31 23:50:01,124 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 23:50:01,124 INFO L933 BasicCegarLoop]: 729 mSDtfsCounter, 2087 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 4289 mSolverCounterSat, 884 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2125 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 5174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 884 IncrementalHoareTripleChecker+Valid, 4289 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-01-31 23:50:01,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2125 Valid, 1792 Invalid, 5174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [884 Valid, 4289 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2022-01-31 23:50:01,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8751 states. [2022-01-31 23:50:02,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8751 to 7697. [2022-01-31 23:50:02,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7697 states, 6101 states have (on average 1.4338633010981807) internal successors, (8748), 6290 states have internal predecessors, (8748), 1011 states have call successors, (1011), 479 states have call predecessors, (1011), 584 states have return successors, (1829), 963 states have call predecessors, (1829), 998 states have call successors, (1829) [2022-01-31 23:50:02,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7697 states to 7697 states and 11588 transitions. [2022-01-31 23:50:02,900 INFO L78 Accepts]: Start accepts. Automaton has 7697 states and 11588 transitions. Word has length 65 [2022-01-31 23:50:02,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:50:02,900 INFO L470 AbstractCegarLoop]: Abstraction has 7697 states and 11588 transitions. [2022-01-31 23:50:02,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-01-31 23:50:02,900 INFO L276 IsEmpty]: Start isEmpty. Operand 7697 states and 11588 transitions. [2022-01-31 23:50:02,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-31 23:50:02,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:50:02,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:50:02,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-31 23:50:02,902 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:50:02,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:50:02,903 INFO L85 PathProgramCache]: Analyzing trace with hash -455424616, now seen corresponding path program 1 times [2022-01-31 23:50:02,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:50:02,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399595355] [2022-01-31 23:50:02,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:50:02,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:50:02,914 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:50:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:03,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:50:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:03,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:50:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:03,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:50:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:03,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:50:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:03,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:50:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:03,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 23:50:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:03,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 23:50:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:03,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-01-31 23:50:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:03,540 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 23:50:03,541 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:50:03,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399595355] [2022-01-31 23:50:03,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [399595355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:50:03,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:50:03,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 23:50:03,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931360028] [2022-01-31 23:50:03,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:50:03,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 23:50:03,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:50:03,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 23:50:03,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-01-31 23:50:03,542 INFO L87 Difference]: Start difference. First operand 7697 states and 11588 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 23:50:09,245 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 23:50:11,410 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:50:13,567 WARN L534 Checker$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 23:50:19,199 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 23:50:24,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:50:24,751 INFO L93 Difference]: Finished difference Result 16420 states and 25028 transitions. [2022-01-31 23:50:24,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 23:50:24,752 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2022-01-31 23:50:24,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:50:24,779 INFO L225 Difference]: With dead ends: 16420 [2022-01-31 23:50:24,779 INFO L226 Difference]: Without dead ends: 8751 [2022-01-31 23:50:24,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2022-01-31 23:50:24,807 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 1806 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 4728 mSolverCounterSat, 746 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1843 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 5478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 4728 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2022-01-31 23:50:24,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1843 Valid, 1710 Invalid, 5478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 4728 Invalid, 4 Unknown, 0 Unchecked, 18.0s Time] [2022-01-31 23:50:24,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8751 states. [2022-01-31 23:50:26,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8751 to 7697. [2022-01-31 23:50:26,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7697 states, 6101 states have (on average 1.4336993935420423) internal successors, (8747), 6290 states have internal predecessors, (8747), 1011 states have call successors, (1011), 479 states have call predecessors, (1011), 584 states have return successors, (1829), 963 states have call predecessors, (1829), 998 states have call successors, (1829) [2022-01-31 23:50:26,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7697 states to 7697 states and 11587 transitions. [2022-01-31 23:50:26,620 INFO L78 Accepts]: Start accepts. Automaton has 7697 states and 11587 transitions. Word has length 67 [2022-01-31 23:50:26,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:50:26,621 INFO L470 AbstractCegarLoop]: Abstraction has 7697 states and 11587 transitions. [2022-01-31 23:50:26,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 23:50:26,621 INFO L276 IsEmpty]: Start isEmpty. Operand 7697 states and 11587 transitions. [2022-01-31 23:50:26,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-31 23:50:26,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:50:26,622 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 23:50:26,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-31 23:50:26,623 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:50:26,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:50:26,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2112328753, now seen corresponding path program 1 times [2022-01-31 23:50:26,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:50:26,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591798875] [2022-01-31 23:50:26,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:50:26,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:50:26,634 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:50:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:26,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:50:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:26,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:50:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:26,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:50:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:26,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:50:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:27,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:50:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:27,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 23:50:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:27,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 23:50:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:27,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-01-31 23:50:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:27,173 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 23:50:27,173 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:50:27,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591798875] [2022-01-31 23:50:27,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [591798875] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:50:27,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:50:27,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 23:50:27,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830092460] [2022-01-31 23:50:27,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:50:27,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 23:50:27,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:50:27,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 23:50:27,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-01-31 23:50:27,174 INFO L87 Difference]: Start difference. First operand 7697 states and 11587 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 23:50:32,722 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 23:50:37,974 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 23:50:43,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:50:43,142 INFO L93 Difference]: Finished difference Result 8766 states and 13487 transitions. [2022-01-31 23:50:43,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 23:50:43,143 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 23:50:43,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:50:43,210 INFO L225 Difference]: With dead ends: 8766 [2022-01-31 23:50:43,210 INFO L226 Difference]: Without dead ends: 8746 [2022-01-31 23:50:43,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-01-31 23:50:43,214 INFO L933 BasicCegarLoop]: 724 mSDtfsCounter, 1814 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 4791 mSolverCounterSat, 778 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 5571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 4791 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-01-31 23:50:43,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1852 Valid, 1785 Invalid, 5571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 4791 Invalid, 2 Unknown, 0 Unchecked, 12.7s Time] [2022-01-31 23:50:43,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8746 states. [2022-01-31 23:50:45,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8746 to 7692. [2022-01-31 23:50:45,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7692 states, 6098 states have (on average 1.4337487700885536) internal successors, (8743), 6287 states have internal predecessors, (8743), 1010 states have call successors, (1010), 479 states have call predecessors, (1010), 583 states have return successors, (1827), 961 states have call predecessors, (1827), 997 states have call successors, (1827) [2022-01-31 23:50:45,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7692 states to 7692 states and 11580 transitions. [2022-01-31 23:50:45,038 INFO L78 Accepts]: Start accepts. Automaton has 7692 states and 11580 transitions. Word has length 71 [2022-01-31 23:50:45,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:50:45,039 INFO L470 AbstractCegarLoop]: Abstraction has 7692 states and 11580 transitions. [2022-01-31 23:50:45,039 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 23:50:45,039 INFO L276 IsEmpty]: Start isEmpty. Operand 7692 states and 11580 transitions. [2022-01-31 23:50:45,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-31 23:50:45,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:50:45,040 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, 1, 1, 1, 1, 1, 1, 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 23:50:45,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-31 23:50:45,041 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:50:45,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:50:45,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1256030660, now seen corresponding path program 1 times [2022-01-31 23:50:45,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:50:45,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085743781] [2022-01-31 23:50:45,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:50:45,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:50:45,052 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:50:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:45,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:50:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:45,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:50:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:45,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:50:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:45,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:50:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:45,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:50:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:45,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 23:50:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:45,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 23:50:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:45,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 23:50:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:50:45,668 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 23:50:45,668 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:50:45,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085743781] [2022-01-31 23:50:45,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1085743781] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:50:45,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:50:45,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 23:50:45,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885250529] [2022-01-31 23:50:45,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:50:45,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 23:50:45,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:50:45,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 23:50:45,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-01-31 23:50:45,670 INFO L87 Difference]: Start difference. First operand 7692 states and 11580 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 23:50:52,449 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 23:50:54,619 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:50:56,789 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:51:02,455 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 23:51:13,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:51:13,562 INFO L93 Difference]: Finished difference Result 14674 states and 22627 transitions. [2022-01-31 23:51:13,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-31 23:51:13,562 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 23:51:13,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:51:13,594 INFO L225 Difference]: With dead ends: 14674 [2022-01-31 23:51:13,595 INFO L226 Difference]: Without dead ends: 10336 [2022-01-31 23:51:13,611 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 23:51:13,612 INFO L933 BasicCegarLoop]: 1093 mSDtfsCounter, 4141 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 7371 mSolverCounterSat, 2222 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4149 SdHoareTripleChecker+Valid, 2372 SdHoareTripleChecker+Invalid, 9597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2222 IncrementalHoareTripleChecker+Valid, 7371 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:51:13,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4149 Valid, 2372 Invalid, 9597 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2222 Valid, 7371 Invalid, 4 Unknown, 0 Unchecked, 22.1s Time] [2022-01-31 23:51:13,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10336 states. [2022-01-31 23:51:15,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10336 to 8302. [2022-01-31 23:51:15,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8302 states, 6587 states have (on average 1.432974039775315) internal successors, (9439), 6782 states have internal predecessors, (9439), 1077 states have call successors, (1077), 521 states have call predecessors, (1077), 637 states have return successors, (1969), 1033 states have call predecessors, (1969), 1063 states have call successors, (1969) [2022-01-31 23:51:15,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8302 states to 8302 states and 12485 transitions. [2022-01-31 23:51:15,909 INFO L78 Accepts]: Start accepts. Automaton has 8302 states and 12485 transitions. Word has length 72 [2022-01-31 23:51:15,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:51:15,910 INFO L470 AbstractCegarLoop]: Abstraction has 8302 states and 12485 transitions. [2022-01-31 23:51:15,910 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 23:51:15,910 INFO L276 IsEmpty]: Start isEmpty. Operand 8302 states and 12485 transitions. [2022-01-31 23:51:15,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-31 23:51:15,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:51:15,913 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 23:51:15,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-31 23:51:15,913 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:51:15,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:51:15,913 INFO L85 PathProgramCache]: Analyzing trace with hash -26354390, now seen corresponding path program 1 times [2022-01-31 23:51:15,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:51:15,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753131682] [2022-01-31 23:51:15,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:51:15,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:51:15,924 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:51:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:16,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:51:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:16,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:51:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:16,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:51:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:16,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:51:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:16,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:51:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:16,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 23:51:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:16,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 23:51:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:16,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-31 23:51:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:16,566 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 23:51:16,566 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:51:16,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753131682] [2022-01-31 23:51:16,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1753131682] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:51:16,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:51:16,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 23:51:16,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602890146] [2022-01-31 23:51:16,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:51:16,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 23:51:16,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:51:16,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 23:51:16,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-01-31 23:51:16,568 INFO L87 Difference]: Start difference. First operand 8302 states and 12485 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 23:51:22,024 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 23:51:26,829 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 23:51:32,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:51:32,949 INFO L93 Difference]: Finished difference Result 16816 states and 25928 transitions. [2022-01-31 23:51:32,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 23:51:32,950 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 23:51:32,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:51:32,981 INFO L225 Difference]: With dead ends: 16816 [2022-01-31 23:51:32,981 INFO L226 Difference]: Without dead ends: 9706 [2022-01-31 23:51:33,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-01-31 23:51:33,003 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 1985 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 4184 mSolverCounterSat, 898 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2020 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 5084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 898 IncrementalHoareTripleChecker+Valid, 4184 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:51:33,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2020 Valid, 1612 Invalid, 5084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [898 Valid, 4184 Invalid, 2 Unknown, 0 Unchecked, 12.2s Time] [2022-01-31 23:51:33,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9706 states. [2022-01-31 23:51:35,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9706 to 8382. [2022-01-31 23:51:35,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8382 states, 6645 states have (on average 1.4291948833709556) internal successors, (9497), 6850 states have internal predecessors, (9497), 1077 states have call successors, (1077), 521 states have call predecessors, (1077), 659 states have return successors, (2036), 1045 states have call predecessors, (2036), 1063 states have call successors, (2036) [2022-01-31 23:51:35,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8382 states to 8382 states and 12610 transitions. [2022-01-31 23:51:35,201 INFO L78 Accepts]: Start accepts. Automaton has 8382 states and 12610 transitions. Word has length 73 [2022-01-31 23:51:35,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:51:35,202 INFO L470 AbstractCegarLoop]: Abstraction has 8382 states and 12610 transitions. [2022-01-31 23:51:35,202 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 23:51:35,202 INFO L276 IsEmpty]: Start isEmpty. Operand 8382 states and 12610 transitions. [2022-01-31 23:51:35,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-31 23:51:35,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:51:35,203 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 23:51:35,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-31 23:51:35,204 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:51:35,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:51:35,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1359799553, now seen corresponding path program 1 times [2022-01-31 23:51:35,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:51:35,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937169268] [2022-01-31 23:51:35,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:51:35,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:51:35,216 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:51:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:35,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:51:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:35,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:51:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:35,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:51:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:35,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:51:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:35,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:51:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:35,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 23:51:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:35,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 23:51:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:35,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 23:51:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:35,774 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 23:51:35,774 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:51:35,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937169268] [2022-01-31 23:51:35,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1937169268] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:51:35,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:51:35,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 23:51:35,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950644021] [2022-01-31 23:51:35,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:51:35,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 23:51:35,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:51:35,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 23:51:35,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-01-31 23:51:35,776 INFO L87 Difference]: Start difference. First operand 8382 states and 12610 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 23:51:43,954 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 23:51:50,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:51:50,789 INFO L93 Difference]: Finished difference Result 17740 states and 27353 transitions. [2022-01-31 23:51:50,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 23:51:50,790 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 23:51:50,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:51:50,820 INFO L225 Difference]: With dead ends: 17740 [2022-01-31 23:51:50,821 INFO L226 Difference]: Without dead ends: 9612 [2022-01-31 23:51:50,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=222, Invalid=590, Unknown=0, NotChecked=0, Total=812 [2022-01-31 23:51:50,847 INFO L933 BasicCegarLoop]: 659 mSDtfsCounter, 2102 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 4191 mSolverCounterSat, 852 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2152 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 5044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 852 IncrementalHoareTripleChecker+Valid, 4191 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-01-31 23:51:50,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2152 Valid, 1433 Invalid, 5044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [852 Valid, 4191 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-01-31 23:51:50,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9612 states. [2022-01-31 23:51:53,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9612 to 8401. [2022-01-31 23:51:53,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8401 states, 6664 states have (on average 1.4294717887154862) internal successors, (9526), 6869 states have internal predecessors, (9526), 1077 states have call successors, (1077), 521 states have call predecessors, (1077), 659 states have return successors, (2036), 1045 states have call predecessors, (2036), 1063 states have call successors, (2036) [2022-01-31 23:51:53,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8401 states to 8401 states and 12639 transitions. [2022-01-31 23:51:53,114 INFO L78 Accepts]: Start accepts. Automaton has 8401 states and 12639 transitions. Word has length 74 [2022-01-31 23:51:53,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:51:53,114 INFO L470 AbstractCegarLoop]: Abstraction has 8401 states and 12639 transitions. [2022-01-31 23:51:53,114 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 23:51:53,114 INFO L276 IsEmpty]: Start isEmpty. Operand 8401 states and 12639 transitions. [2022-01-31 23:51:53,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-31 23:51:53,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:51:53,116 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 23:51:53,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-31 23:51:53,116 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:51:53,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:51:53,116 INFO L85 PathProgramCache]: Analyzing trace with hash 941023037, now seen corresponding path program 1 times [2022-01-31 23:51:53,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:51:53,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858712349] [2022-01-31 23:51:53,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:51:53,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:51:53,128 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:51:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:53,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:51:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:53,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:51:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:53,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:51:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:53,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:51:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:53,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:51:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:53,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 23:51:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:53,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 23:51:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:53,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 23:51:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:51:53,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:51:53,598 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:51:53,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858712349] [2022-01-31 23:51:53,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1858712349] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:51:53,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:51:53,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-31 23:51:53,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803039588] [2022-01-31 23:51:53,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:51:53,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 23:51:53,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:51:53,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 23:51:53,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-01-31 23:51:53,600 INFO L87 Difference]: Start difference. First operand 8401 states and 12639 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 23:51:59,707 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:52:01,824 WARN L534 Checker$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 23:52:03,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:52:06,075 WARN L534 Checker$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 23:52:11,783 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 23:52:18,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:52:18,687 INFO L93 Difference]: Finished difference Result 13775 states and 20993 transitions. [2022-01-31 23:52:18,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-31 23:52:18,688 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 23:52:18,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:52:18,713 INFO L225 Difference]: With dead ends: 13775 [2022-01-31 23:52:18,713 INFO L226 Difference]: Without dead ends: 9386 [2022-01-31 23:52:18,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=374, Invalid=1432, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 23:52:18,730 INFO L933 BasicCegarLoop]: 671 mSDtfsCounter, 2453 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 5596 mSolverCounterSat, 1018 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2485 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 6619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1018 IncrementalHoareTripleChecker+Valid, 5596 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2022-01-31 23:52:18,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2485 Valid, 1757 Invalid, 6619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1018 Valid, 5596 Invalid, 5 Unknown, 0 Unchecked, 20.0s Time] [2022-01-31 23:52:18,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9386 states. [2022-01-31 23:52:20,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9386 to 7603. [2022-01-31 23:52:20,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7603 states, 6032 states have (on average 1.4278846153846154) internal successors, (8613), 6225 states have internal predecessors, (8613), 974 states have call successors, (974), 475 states have call predecessors, (974), 596 states have return successors, (1663), 937 states have call predecessors, (1663), 960 states have call successors, (1663) [2022-01-31 23:52:20,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7603 states to 7603 states and 11250 transitions. [2022-01-31 23:52:20,947 INFO L78 Accepts]: Start accepts. Automaton has 7603 states and 11250 transitions. Word has length 74 [2022-01-31 23:52:20,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:52:20,948 INFO L470 AbstractCegarLoop]: Abstraction has 7603 states and 11250 transitions. [2022-01-31 23:52:20,948 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 23:52:20,948 INFO L276 IsEmpty]: Start isEmpty. Operand 7603 states and 11250 transitions. [2022-01-31 23:52:20,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-31 23:52:20,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:52:20,949 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 23:52:20,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-31 23:52:20,949 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:52:20,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:52:20,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1087715839, now seen corresponding path program 1 times [2022-01-31 23:52:20,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:52:20,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126657299] [2022-01-31 23:52:20,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:52:20,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:52:20,961 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:52:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:21,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:52:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:21,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:52:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:21,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:52:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:21,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:52:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:21,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:52:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:21,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 23:52:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:21,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 23:52:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:21,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 23:52:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:21,372 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 23:52:21,372 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:52:21,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126657299] [2022-01-31 23:52:21,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [126657299] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:52:21,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:52:21,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-31 23:52:21,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048451082] [2022-01-31 23:52:21,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:52:21,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 23:52:21,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:52:21,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 23:52:21,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-31 23:52:21,373 INFO L87 Difference]: Start difference. First operand 7603 states and 11250 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 23:52:28,662 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 23:52:40,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:52:40,256 INFO L93 Difference]: Finished difference Result 11766 states and 17892 transitions. [2022-01-31 23:52:40,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-31 23:52:40,258 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 23:52:40,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:52:40,289 INFO L225 Difference]: With dead ends: 11766 [2022-01-31 23:52:40,289 INFO L226 Difference]: Without dead ends: 11753 [2022-01-31 23:52:40,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=231, Invalid=639, Unknown=0, NotChecked=0, Total=870 [2022-01-31 23:52:40,294 INFO L933 BasicCegarLoop]: 1150 mSDtfsCounter, 2181 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 5474 mSolverCounterSat, 990 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2228 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 6465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 990 IncrementalHoareTripleChecker+Valid, 5474 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-01-31 23:52:40,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2228 Valid, 2106 Invalid, 6465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [990 Valid, 5474 Invalid, 1 Unknown, 0 Unchecked, 13.0s Time] [2022-01-31 23:52:40,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11753 states. [2022-01-31 23:52:42,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11753 to 8234. [2022-01-31 23:52:42,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8234 states, 6544 states have (on average 1.4306234718826405) internal successors, (9362), 6738 states have internal predecessors, (9362), 1043 states have call successors, (1043), 516 states have call predecessors, (1043), 646 states have return successors, (1777), 1015 states have call predecessors, (1777), 1029 states have call successors, (1777) [2022-01-31 23:52:42,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8234 states to 8234 states and 12182 transitions. [2022-01-31 23:52:42,955 INFO L78 Accepts]: Start accepts. Automaton has 8234 states and 12182 transitions. Word has length 74 [2022-01-31 23:52:42,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:52:42,955 INFO L470 AbstractCegarLoop]: Abstraction has 8234 states and 12182 transitions. [2022-01-31 23:52:42,955 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 23:52:42,955 INFO L276 IsEmpty]: Start isEmpty. Operand 8234 states and 12182 transitions. [2022-01-31 23:52:42,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-31 23:52:42,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:52:42,957 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 23:52:42,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-31 23:52:42,957 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:52:42,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:52:42,957 INFO L85 PathProgramCache]: Analyzing trace with hash -189949733, now seen corresponding path program 1 times [2022-01-31 23:52:42,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:52:42,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849934887] [2022-01-31 23:52:42,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:52:42,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:52:42,969 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:52:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:43,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:52:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:43,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:52:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:43,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:52:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:43,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:52:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:43,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:52:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:43,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 23:52:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:43,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 23:52:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:43,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 23:52:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:52:43,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:52:43,457 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:52:43,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849934887] [2022-01-31 23:52:43,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [849934887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:52:43,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:52:43,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 23:52:43,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972587618] [2022-01-31 23:52:43,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:52:43,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 23:52:43,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:52:43,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 23:52:43,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-01-31 23:52:43,458 INFO L87 Difference]: Start difference. First operand 8234 states and 12182 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 23:52:53,270 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-31 23:52:59,039 WARN L534 Checker$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 23:53:09,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:53:09,184 INFO L93 Difference]: Finished difference Result 10371 states and 15718 transitions. [2022-01-31 23:53:09,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 23:53:09,185 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 23:53:09,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:53:09,212 INFO L225 Difference]: With dead ends: 10371 [2022-01-31 23:53:09,212 INFO L226 Difference]: Without dead ends: 10367 [2022-01-31 23:53:09,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=542, Invalid=1810, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 23:53:09,217 INFO L933 BasicCegarLoop]: 1093 mSDtfsCounter, 4075 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 6369 mSolverCounterSat, 1972 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4118 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 8343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1972 IncrementalHoareTripleChecker+Valid, 6369 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2022-01-31 23:53:09,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4118 Valid, 1994 Invalid, 8343 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1972 Valid, 6369 Invalid, 2 Unknown, 0 Unchecked, 18.4s Time] [2022-01-31 23:53:09,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10367 states. [2022-01-31 23:53:11,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10367 to 8236. [2022-01-31 23:53:12,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8236 states, 6546 states have (on average 1.43049190345249) internal successors, (9364), 6740 states have internal predecessors, (9364), 1043 states have call successors, (1043), 516 states have call predecessors, (1043), 646 states have return successors, (1777), 1015 states have call predecessors, (1777), 1029 states have call successors, (1777) [2022-01-31 23:53:12,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8236 states to 8236 states and 12184 transitions. [2022-01-31 23:53:12,025 INFO L78 Accepts]: Start accepts. Automaton has 8236 states and 12184 transitions. Word has length 75 [2022-01-31 23:53:12,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:53:12,025 INFO L470 AbstractCegarLoop]: Abstraction has 8236 states and 12184 transitions. [2022-01-31 23:53:12,025 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 23:53:12,025 INFO L276 IsEmpty]: Start isEmpty. Operand 8236 states and 12184 transitions. [2022-01-31 23:53:12,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-31 23:53:12,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:53:12,027 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 23:53:12,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-31 23:53:12,027 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:53:12,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:53:12,027 INFO L85 PathProgramCache]: Analyzing trace with hash -189672903, now seen corresponding path program 1 times [2022-01-31 23:53:12,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:53:12,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706402211] [2022-01-31 23:53:12,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:53:12,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:53:12,039 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:53:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:53:12,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:53:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:53:12,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:53:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:53:12,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 23:53:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:53:12,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 23:53:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:53:12,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-31 23:53:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:53:12,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 23:53:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:53:12,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 23:53:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:53:12,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 23:53:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:53:12,714 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 23:53:12,714 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:53:12,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706402211] [2022-01-31 23:53:12,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [706402211] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:53:12,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:53:12,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-31 23:53:12,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389031065] [2022-01-31 23:53:12,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:53:12,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 23:53:12,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:53:12,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 23:53:12,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-01-31 23:53:12,715 INFO L87 Difference]: Start difference. First operand 8236 states and 12184 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 23:53:20,923 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 23:53:28,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:53:28,112 INFO L93 Difference]: Finished difference Result 17461 states and 26355 transitions. [2022-01-31 23:53:28,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 23:53:28,112 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-01-31 23:53:28,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:53:28,141 INFO L225 Difference]: With dead ends: 17461 [2022-01-31 23:53:28,141 INFO L226 Difference]: Without dead ends: 9190 [2022-01-31 23:53:28,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2022-01-31 23:53:28,167 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1481 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 4142 mSolverCounterSat, 658 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 4801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 4142 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-01-31 23:53:28,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 1536 Invalid, 4801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 4142 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2022-01-31 23:53:28,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9190 states. [2022-01-31 23:53:30,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9190 to 8259. [2022-01-31 23:53:30,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8259 states, 6569 states have (on average 1.4289846247526259) internal successors, (9387), 6763 states have internal predecessors, (9387), 1043 states have call successors, (1043), 516 states have call predecessors, (1043), 646 states have return successors, (1777), 1015 states have call predecessors, (1777), 1029 states have call successors, (1777) [2022-01-31 23:53:30,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8259 states to 8259 states and 12207 transitions. [2022-01-31 23:53:30,979 INFO L78 Accepts]: Start accepts. Automaton has 8259 states and 12207 transitions. Word has length 75 [2022-01-31 23:53:30,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:53:30,980 INFO L470 AbstractCegarLoop]: Abstraction has 8259 states and 12207 transitions. [2022-01-31 23:53:30,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-31 23:53:30,980 INFO L276 IsEmpty]: Start isEmpty. Operand 8259 states and 12207 transitions. [2022-01-31 23:53:30,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-31 23:53:30,981 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:53:30,981 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 23:53:30,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-31 23:53:30,981 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:53:30,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:53:30,982 INFO L85 PathProgramCache]: Analyzing trace with hash -593466891, now seen corresponding path program 1 times [2022-01-31 23:53:30,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:53:30,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624735595] [2022-01-31 23:53:30,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:53:30,996 ERROR L252 FreeRefinementEngine]: Caught unknown exception: Undeclared function symbol (select Real Int) [2022-01-31 23:53:30,996 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2022-01-31 23:53:30,996 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (select Real Int) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:505) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:426) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:249) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:249) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.select(SmtUtils.java:1520) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.termWithLocalSimplification(SmtUtils.java:1465) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.termWithLocalSimplification(SmtUtils.java:1374) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.convertApplicationTerm(SmtUtils.java:1363) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.Substitution.convertApplicationTerm(Substitution.java:53) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$BuildApplicationTerm.walk(TermTransformer.java:339) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.Substitution.apply(Substitution.java:59) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrAbstractor.getUpdates(QvasrAbstractor.java:1229) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrAbstractor.computeAbstraction(QvasrAbstractor.java:106) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrSummarizer.summarizeLoop(QvasrSummarizer.java:133) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrLoopSummarization.getQvasrAcceleration(QvasrLoopSummarization.java:79) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorQvasr.accelerateLoop(AcceleratorQvasr.java:87) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:210) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:185) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:264) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-01-31 23:53:31,000 INFO L158 Benchmark]: Toolchain (without parser) took 458258.08ms. Allocated memory was 195.0MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 163.8MB in the beginning and 984.4MB in the end (delta: -820.6MB). Peak memory consumption was 524.7MB. Max. memory is 8.0GB. [2022-01-31 23:53:31,001 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 195.0MB. Free memory is still 157.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:53:31,001 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1272.35ms. Allocated memory was 195.0MB in the beginning and 304.1MB in the end (delta: 109.1MB). Free memory was 163.8MB in the beginning and 242.0MB in the end (delta: -78.2MB). Peak memory consumption was 114.7MB. Max. memory is 8.0GB. [2022-01-31 23:53:31,001 INFO L158 Benchmark]: Boogie Preprocessor took 260.85ms. Allocated memory is still 304.1MB. Free memory was 242.0MB in the beginning and 200.6MB in the end (delta: 41.4MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2022-01-31 23:53:31,001 INFO L158 Benchmark]: RCFGBuilder took 27580.56ms. Allocated memory was 304.1MB in the beginning and 618.7MB in the end (delta: 314.6MB). Free memory was 200.6MB in the beginning and 217.4MB in the end (delta: -16.8MB). Peak memory consumption was 340.3MB. Max. memory is 8.0GB. [2022-01-31 23:53:31,001 INFO L158 Benchmark]: TraceAbstraction took 429140.82ms. Allocated memory was 618.7MB in the beginning and 1.5GB in the end (delta: 921.7MB). Free memory was 216.8MB in the beginning and 984.4MB in the end (delta: -767.6MB). Peak memory consumption was 154.1MB. Max. memory is 8.0GB. [2022-01-31 23:53:31,002 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 195.0MB. Free memory is still 157.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1272.35ms. Allocated memory was 195.0MB in the beginning and 304.1MB in the end (delta: 109.1MB). Free memory was 163.8MB in the beginning and 242.0MB in the end (delta: -78.2MB). Peak memory consumption was 114.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 260.85ms. Allocated memory is still 304.1MB. Free memory was 242.0MB in the beginning and 200.6MB in the end (delta: 41.4MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. * RCFGBuilder took 27580.56ms. Allocated memory was 304.1MB in the beginning and 618.7MB in the end (delta: 314.6MB). Free memory was 200.6MB in the beginning and 217.4MB in the end (delta: -16.8MB). Peak memory consumption was 340.3MB. Max. memory is 8.0GB. * TraceAbstraction took 429140.82ms. Allocated memory was 618.7MB in the beginning and 1.5GB in the end (delta: 921.7MB). Free memory was 216.8MB in the beginning and 984.4MB in the end (delta: -767.6MB). Peak memory consumption was 154.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Undeclared function symbol (select Real Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Undeclared function symbol (select Real Int): de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:505) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-01-31 23:53:31,206 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-01-31 23:53:31,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...