/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-19 06:52:38,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 06:52:38,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 06:52:38,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-19 06:52:38,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-19 06:52:38,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-19 06:52:38,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-19 06:52:38,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-19 06:52:38,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-19 06:52:38,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-19 06:52:38,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-19 06:52:38,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-19 06:52:38,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-19 06:52:38,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-19 06:52:38,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-19 06:52:38,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-19 06:52:38,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-19 06:52:38,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-19 06:52:38,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-19 06:52:38,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-19 06:52:38,065 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-19 06:52:38,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-19 06:52:38,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-19 06:52:38,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-19 06:52:38,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-19 06:52:38,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-19 06:52:38,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 06:52:38,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 06:52:38,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 06:52:38,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-03-19 06:52:38,089 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 06:52:38,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 06:52:38,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 06:52:38,091 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-19 06:52:38,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 06:52:38,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-19 06:52:38,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 06:52:38,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 06:52:38,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 06:52:38,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 06:52:38,093 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-19 06:52:38,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 06:52:38,093 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 06:52:38,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 06:52:38,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 06:52:38,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 06:52:38,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-19 06:52:38,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 06:52:38,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 06:52:38,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 06:52:38,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-19 06:52:38,094 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-19 06:52:38,094 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-19 06:52:38,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 06:52:38,094 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-19 06:52:38,094 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 06:52:38,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 06:52:38,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 06:52:38,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 06:52:38,286 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 06:52:38,286 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 06:52:38,287 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c [2022-03-19 06:52:38,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7114f9a7/094e7cb2927a456abdd7b52d88022a67/FLAG65311c02d [2022-03-19 06:52:38,879 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 06:52:38,879 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c [2022-03-19 06:52:38,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7114f9a7/094e7cb2927a456abdd7b52d88022a67/FLAG65311c02d [2022-03-19 06:52:39,367 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7114f9a7/094e7cb2927a456abdd7b52d88022a67 [2022-03-19 06:52:39,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 06:52:39,370 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 06:52:39,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 06:52:39,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 06:52:39,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 06:52:39,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 06:52:39" (1/1) ... [2022-03-19 06:52:39,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a258f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:52:39, skipping insertion in model container [2022-03-19 06:52:39,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 06:52:39" (1/1) ... [2022-03-19 06:52:39,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 06:52:39,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 06:52:39,922 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c[76734,76747] [2022-03-19 06:52:40,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 06:52:40,221 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 06:52:40,273 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/floppy.i.cil-1.c[76734,76747] [2022-03-19 06:52:40,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 06:52:40,541 INFO L208 MainTranslator]: Completed translation [2022-03-19 06:52:40,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:52:40 WrapperNode [2022-03-19 06:52:40,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 06:52:40,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 06:52:40,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 06:52:40,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 06:52:40,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:52:40" (1/1) ... [2022-03-19 06:52:40,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:52:40" (1/1) ... [2022-03-19 06:52:40,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:52:40" (1/1) ... [2022-03-19 06:52:40,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:52:40" (1/1) ... [2022-03-19 06:52:40,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:52:40" (1/1) ... [2022-03-19 06:52:40,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:52:40" (1/1) ... [2022-03-19 06:52:40,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:52:40" (1/1) ... [2022-03-19 06:52:40,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 06:52:40,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 06:52:40,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 06:52:40,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 06:52:40,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:52:40" (1/1) ... [2022-03-19 06:52:40,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 06:52:40,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 06:52:40,859 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-19 06:52:40,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-19 06:52:40,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 06:52:40,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 06:52:40,916 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 06:52:40,916 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-03-19 06:52:40,916 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-19 06:52:40,917 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-19 06:52:40,917 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-03-19 06:52:40,917 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyUnload [2022-03-19 06:52:40,917 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyAddDevice [2022-03-19 06:52:40,917 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConfigCallBack [2022-03-19 06:52:40,917 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-03-19 06:52:40,917 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-03-19 06:52:40,917 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-03-19 06:52:40,917 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-03-19 06:52:40,917 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-03-19 06:52:40,917 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-03-19 06:52:40,917 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-03-19 06:52:40,918 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPower [2022-03-19 06:52:40,918 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyReadWrite [2022-03-19 06:52:40,918 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInterpretError [2022-03-19 06:52:40,918 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFinishOperation [2022-03-19 06:52:40,918 INFO L138 BoogieDeclarations]: Found implementation of procedure FlStartDrive [2022-03-19 06:52:40,918 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDatarateSpecifyConfigure [2022-03-19 06:52:40,918 INFO L138 BoogieDeclarations]: Found implementation of procedure FlRecalibrateDrive [2022-03-19 06:52:40,918 INFO L138 BoogieDeclarations]: Found implementation of procedure FlDetermineMediaType [2022-03-19 06:52:40,918 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAllocateIoBuffer [2022-03-19 06:52:40,918 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFreeIoBuffer [2022-03-19 06:52:40,918 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyThread [2022-03-19 06:52:40,918 INFO L138 BoogieDeclarations]: Found implementation of procedure FlConsolidateMediaTypeWithBootSector [2022-03-19 06:52:40,918 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckBootSector [2022-03-19 06:52:40,919 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWriteTrack [2022-03-19 06:52:40,919 INFO L138 BoogieDeclarations]: Found implementation of procedure FlReadWrite [2022-03-19 06:52:40,919 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFormat [2022-03-19 06:52:40,919 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2022-03-19 06:52:40,919 INFO L138 BoogieDeclarations]: Found implementation of procedure FlIssueCommand [2022-03-19 06:52:40,919 INFO L138 BoogieDeclarations]: Found implementation of procedure FlInitializeControllerHardware [2022-03-19 06:52:40,919 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-03-19 06:52:40,919 INFO L138 BoogieDeclarations]: Found implementation of procedure FlHdbit [2022-03-19 06:52:40,919 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-03-19 06:52:40,919 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCancelQueuedRequest [2022-03-19 06:52:40,919 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-03-19 06:52:40,919 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-19 06:52:40,920 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 06:52:40,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-03-19 06:52:40,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-03-19 06:52:40,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-03-19 06:52:40,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-03-19 06:52:40,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-03-19 06:52:40,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-03-19 06:52:40,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-03-19 06:52:40,920 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-03-19 06:52:40,920 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-03-19 06:52:40,920 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-03-19 06:52:40,920 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-19 06:52:40,921 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-03-19 06:52:40,921 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-03-19 06:52:40,921 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-03-19 06:52:40,921 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-03-19 06:52:40,921 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-03-19 06:52:40,921 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-03-19 06:52:40,921 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-03-19 06:52:40,921 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-03-19 06:52:40,921 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-03-19 06:52:40,921 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-03-19 06:52:40,921 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-03-19 06:52:40,921 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-03-19 06:52:40,921 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-03-19 06:52:40,922 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-19 06:52:40,922 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-19 06:52:40,922 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-19 06:52:40,922 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-03-19 06:52:40,922 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-03-19 06:52:40,922 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-03-19 06:52:40,922 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-03-19 06:52:40,922 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-03-19 06:52:40,922 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-03-19 06:52:40,922 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-19 06:52:40,922 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-19 06:52:40,922 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-03-19 06:52:40,923 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-03-19 06:52:40,923 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-03-19 06:52:40,923 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-03-19 06:52:40,923 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-03-19 06:52:40,923 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-03-19 06:52:40,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-03-19 06:52:40,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-03-19 06:52:40,923 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-19 06:52:40,923 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-03-19 06:52:40,923 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-03-19 06:52:40,923 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-03-19 06:52:40,923 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-03-19 06:52:40,923 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-03-19 06:52:40,924 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-03-19 06:52:40,924 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-03-19 06:52:40,924 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-03-19 06:52:40,924 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-03-19 06:52:40,924 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-03-19 06:52:40,924 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-03-19 06:52:40,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-19 06:52:40,924 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-03-19 06:52:40,924 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-03-19 06:52:40,924 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-03-19 06:52:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 06:52:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 06:52:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 06:52:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 06:52:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-19 06:52:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-19 06:52:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-19 06:52:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2022-03-19 06:52:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure swprintf [2022-03-19 06:52:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-19 06:52:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-03-19 06:52:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-03-19 06:52:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-03-19 06:52:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-03-19 06:52:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-03-19 06:52:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-03-19 06:52:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-03-19 06:52:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-03-19 06:52:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-03-19 06:52:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-03-19 06:52:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-03-19 06:52:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 06:52:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 06:52:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-03-19 06:52:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-19 06:52:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-03-19 06:52:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-03-19 06:52:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-03-19 06:52:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-19 06:52:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-03-19 06:52:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-03-19 06:52:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-03-19 06:52:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-03-19 06:52:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-03-19 06:52:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-03-19 06:52:40,931 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-03-19 06:52:40,933 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-03-19 06:52:40,934 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-03-19 06:52:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-03-19 06:52:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-03-19 06:52:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-03-19 06:52:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-03-19 06:52:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-03-19 06:52:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-03-19 06:52:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-03-19 06:52:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-03-19 06:52:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-03-19 06:52:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-03-19 06:52:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-19 06:52:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-19 06:52:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-19 06:52:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-03-19 06:52:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-03-19 06:52:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-03-19 06:52:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-03-19 06:52:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-03-19 06:52:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-03-19 06:52:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-03-19 06:52:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-03-19 06:52:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-03-19 06:52:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-03-19 06:52:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-03-19 06:52:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-03-19 06:52:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-03-19 06:52:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-19 06:52:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-03-19 06:52:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-03-19 06:52:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-03-19 06:52:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-19 06:52:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-03-19 06:52:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyUnload [2022-03-19 06:52:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure FlConfigCallBack [2022-03-19 06:52:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure FlInitializeControllerHardware [2022-03-19 06:52:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-03-19 06:52:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-03-19 06:52:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyReadWrite [2022-03-19 06:52:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure FlRecalibrateDrive [2022-03-19 06:52:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure FlDatarateSpecifyConfigure [2022-03-19 06:52:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure FlStartDrive [2022-03-19 06:52:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure FlFinishOperation [2022-03-19 06:52:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure FlDetermineMediaType [2022-03-19 06:52:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyThread [2022-03-19 06:52:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWrite [2022-03-19 06:52:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure FlFormat [2022-03-19 06:52:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure FlIssueCommand [2022-03-19 06:52:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2022-03-19 06:52:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-03-19 06:52:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure FlInterpretError [2022-03-19 06:52:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure FlAllocateIoBuffer [2022-03-19 06:52:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure FlFreeIoBuffer [2022-03-19 06:52:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure FlConsolidateMediaTypeWithBootSector [2022-03-19 06:52:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckBootSector [2022-03-19 06:52:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure FlReadWriteTrack [2022-03-19 06:52:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-03-19 06:52:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyAddDevice [2022-03-19 06:52:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-03-19 06:52:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPower [2022-03-19 06:52:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-03-19 06:52:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-03-19 06:52:40,942 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-03-19 06:52:40,942 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-03-19 06:52:40,942 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCancelQueuedRequest [2022-03-19 06:52:40,942 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-03-19 06:52:40,942 INFO L130 BoogieDeclarations]: Found specification of procedure FlHdbit [2022-03-19 06:52:40,942 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-19 06:52:40,942 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-19 06:52:40,942 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-19 06:52:40,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-19 06:52:40,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-19 06:52:40,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-19 06:52:40,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-19 06:52:40,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 06:52:40,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-03-19 06:52:40,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-03-19 06:52:40,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-03-19 06:52:40,944 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-19 06:52:40,944 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 06:52:40,944 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-19 06:52:40,944 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-03-19 06:52:40,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 06:52:40,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 06:52:40,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 06:52:40,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-19 06:52:40,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-19 06:52:40,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-19 06:52:40,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-19 06:52:41,494 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 06:52:41,500 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 06:52:41,532 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:52:41,561 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:52:41,562 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:52:41,562 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:52:41,568 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:52:41,568 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:52:43,143 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:52:43,149 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:52:43,149 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:52:43,149 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:52:43,166 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:52:43,166 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:52:43,170 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:52:43,178 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:52:43,179 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:52:43,219 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:52:43,228 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:52:43,228 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:52:43,228 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:52:43,236 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:52:43,236 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:52:43,237 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:52:43,247 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:52:43,247 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:52:43,296 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:52:43,352 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-03-19 06:52:43,352 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-03-19 06:52:43,418 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:52:43,427 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:52:43,427 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:52:43,428 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:52:43,432 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:52:43,432 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:52:43,432 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:52:43,443 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:52:43,445 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:52:43,455 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:52:43,462 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:52:43,463 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:52:43,464 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:52:43,469 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:52:43,470 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:52:50,021 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:52:50,034 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-19 06:52:50,035 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-19 06:52:50,088 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:52:50,645 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-03-19 06:52:50,645 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-03-19 06:52:50,900 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:52:50,903 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:52:50,903 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:52:50,963 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:52:50,987 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-03-19 06:52:50,987 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-03-19 06:52:50,990 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:52:51,116 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-19 06:52:51,116 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-19 06:52:51,117 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:52:51,160 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-03-19 06:52:51,161 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-03-19 06:53:01,978 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:53:01,982 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:53:01,982 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:53:02,097 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:53:02,101 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:53:02,101 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:53:02,116 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:53:04,502 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-03-19 06:53:04,503 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-03-19 06:53:04,537 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:53:04,713 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-03-19 06:53:04,713 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-03-19 06:53:04,714 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:53:04,727 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-19 06:53:04,727 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-19 06:53:04,727 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:53:04,754 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-19 06:53:04,755 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-19 06:53:04,757 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:53:04,765 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-19 06:53:04,765 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-19 06:53:04,803 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:53:04,806 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:53:04,807 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:53:04,815 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:53:04,819 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 06:53:04,819 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 06:53:04,820 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:53:04,883 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume !false; [2022-03-19 06:53:04,883 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume false; [2022-03-19 06:53:04,921 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 06:53:07,287 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2022-03-19 06:53:07,288 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2022-03-19 06:53:07,310 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 06:53:07,329 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 06:53:07,330 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2022-03-19 06:53:07,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 06:53:07 BoogieIcfgContainer [2022-03-19 06:53:07,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 06:53:07,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 06:53:07,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 06:53:07,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 06:53:07,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 06:52:39" (1/3) ... [2022-03-19 06:53:07,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276c9090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 06:53:07, skipping insertion in model container [2022-03-19 06:53:07,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:52:40" (2/3) ... [2022-03-19 06:53:07,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276c9090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 06:53:07, skipping insertion in model container [2022-03-19 06:53:07,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 06:53:07" (3/3) ... [2022-03-19 06:53:07,342 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-1.c [2022-03-19 06:53:07,347 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-19 06:53:07,347 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 06:53:07,384 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 06:53:07,394 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-19 06:53:07,394 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 06:53:07,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 1449 states, 1151 states have (on average 1.523023457862728) internal successors, (1753), 1192 states have internal predecessors, (1753), 221 states have call successors, (221), 72 states have call predecessors, (221), 72 states have return successors, (221), 215 states have call predecessors, (221), 221 states have call successors, (221) [2022-03-19 06:53:07,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-19 06:53:07,435 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:53:07,436 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:53:07,437 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:53:07,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:53:07,441 INFO L85 PathProgramCache]: Analyzing trace with hash 760330439, now seen corresponding path program 1 times [2022-03-19 06:53:07,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:53:07,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [46967705] [2022-03-19 06:53:07,454 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:53:07,455 INFO L85 PathProgramCache]: Analyzing trace with hash 760330439, now seen corresponding path program 2 times [2022-03-19 06:53:07,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:53:07,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466383306] [2022-03-19 06:53:07,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:53:07,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:53:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:08,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:53:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:08,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:53:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:08,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:53:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:08,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 06:53:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:08,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:53:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:08,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:53:08,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:53:08,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466383306] [2022-03-19 06:53:08,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466383306] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:53:08,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:53:08,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:53:08,341 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:53:08,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [46967705] [2022-03-19 06:53:08,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [46967705] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:53:08,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:53:08,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 06:53:08,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531958832] [2022-03-19 06:53:08,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:53:08,345 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 06:53:08,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:53:08,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 06:53:08,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-19 06:53:08,370 INFO L87 Difference]: Start difference. First operand has 1449 states, 1151 states have (on average 1.523023457862728) internal successors, (1753), 1192 states have internal predecessors, (1753), 221 states have call successors, (221), 72 states have call predecessors, (221), 72 states have return successors, (221), 215 states have call predecessors, (221), 221 states have call successors, (221) Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:53:14,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:53:15,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:53:15,443 INFO L93 Difference]: Finished difference Result 1399 states and 2144 transitions. [2022-03-19 06:53:15,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 06:53:15,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2022-03-19 06:53:15,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:53:15,485 INFO L225 Difference]: With dead ends: 1399 [2022-03-19 06:53:15,486 INFO L226 Difference]: Without dead ends: 833 [2022-03-19 06:53:15,499 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-03-19 06:53:15,504 INFO L912 BasicCegarLoop]: 728 mSDtfsCounter, 1822 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 917 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 3355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 917 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-03-19 06:53:15,509 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1850 Valid, 1207 Invalid, 3355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [917 Valid, 2437 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-03-19 06:53:15,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-03-19 06:53:15,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 651. [2022-03-19 06:53:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 491 states have (on average 1.4256619144602851) internal successors, (700), 523 states have internal predecessors, (700), 115 states have call successors, (115), 46 states have call predecessors, (115), 44 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-03-19 06:53:15,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 906 transitions. [2022-03-19 06:53:15,665 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 906 transitions. Word has length 37 [2022-03-19 06:53:15,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:53:15,665 INFO L478 AbstractCegarLoop]: Abstraction has 651 states and 906 transitions. [2022-03-19 06:53:15,665 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 06:53:15,665 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 906 transitions. [2022-03-19 06:53:15,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-19 06:53:15,666 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:53:15,667 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:53:15,667 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 06:53:15,667 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:53:15,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:53:15,667 INFO L85 PathProgramCache]: Analyzing trace with hash -2031942295, now seen corresponding path program 1 times [2022-03-19 06:53:15,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:53:15,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1438661756] [2022-03-19 06:53:15,668 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:53:15,668 INFO L85 PathProgramCache]: Analyzing trace with hash -2031942295, now seen corresponding path program 2 times [2022-03-19 06:53:15,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:53:15,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966867321] [2022-03-19 06:53:15,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:53:15,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:53:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:15,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:53:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:15,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:53:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:16,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:53:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:16,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 06:53:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:16,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:53:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:16,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 06:53:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:16,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:53:16,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:53:16,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966867321] [2022-03-19 06:53:16,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966867321] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:53:16,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:53:16,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:53:16,126 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:53:16,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1438661756] [2022-03-19 06:53:16,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1438661756] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:53:16,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:53:16,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:53:16,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178425124] [2022-03-19 06:53:16,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:53:16,127 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 06:53:16,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:53:16,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 06:53:16,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-19 06:53:16,127 INFO L87 Difference]: Start difference. First operand 651 states and 906 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:53:22,358 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:53:25,304 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:53:28,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:53:28,591 INFO L93 Difference]: Finished difference Result 1886 states and 2773 transitions. [2022-03-19 06:53:28,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-19 06:53:28,592 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2022-03-19 06:53:28,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:53:28,599 INFO L225 Difference]: With dead ends: 1886 [2022-03-19 06:53:28,599 INFO L226 Difference]: Without dead ends: 1423 [2022-03-19 06:53:28,601 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-03-19 06:53:28,602 INFO L912 BasicCegarLoop]: 924 mSDtfsCounter, 2981 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 3570 mSolverCounterSat, 1111 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3019 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 4683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1111 IncrementalHoareTripleChecker+Valid, 3570 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-03-19 06:53:28,602 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3019 Valid, 1637 Invalid, 4683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1111 Valid, 3570 Invalid, 2 Unknown, 0 Unchecked, 11.3s Time] [2022-03-19 06:53:28,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2022-03-19 06:53:28,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1195. [2022-03-19 06:53:28,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 925 states have (on average 1.4086486486486487) internal successors, (1303), 956 states have internal predecessors, (1303), 177 states have call successors, (177), 79 states have call predecessors, (177), 92 states have return successors, (237), 169 states have call predecessors, (237), 161 states have call successors, (237) [2022-03-19 06:53:28,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1717 transitions. [2022-03-19 06:53:28,729 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1717 transitions. Word has length 42 [2022-03-19 06:53:28,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:53:28,729 INFO L478 AbstractCegarLoop]: Abstraction has 1195 states and 1717 transitions. [2022-03-19 06:53:28,729 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 9 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:53:28,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1717 transitions. [2022-03-19 06:53:28,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-19 06:53:28,731 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:53:28,731 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:53:28,731 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-19 06:53:28,731 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:53:28,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:53:28,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2071284277, now seen corresponding path program 1 times [2022-03-19 06:53:28,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:53:28,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [906284706] [2022-03-19 06:53:28,732 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:53:28,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2071284277, now seen corresponding path program 2 times [2022-03-19 06:53:28,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:53:28,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957697519] [2022-03-19 06:53:28,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:53:28,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:53:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:29,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:53:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:29,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:53:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:29,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:53:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:29,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 06:53:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:29,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:53:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:29,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 06:53:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:29,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-19 06:53:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:29,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:53:29,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:53:29,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957697519] [2022-03-19 06:53:29,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957697519] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:53:29,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:53:29,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:53:29,266 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:53:29,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [906284706] [2022-03-19 06:53:29,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [906284706] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:53:29,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:53:29,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:53:29,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232149549] [2022-03-19 06:53:29,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:53:29,267 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 06:53:29,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:53:29,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 06:53:29,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-19 06:53:29,268 INFO L87 Difference]: Start difference. First operand 1195 states and 1717 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 06:53:36,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:53:39,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:53:39,798 INFO L93 Difference]: Finished difference Result 2186 states and 3260 transitions. [2022-03-19 06:53:39,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-19 06:53:39,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2022-03-19 06:53:39,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:53:39,808 INFO L225 Difference]: With dead ends: 2186 [2022-03-19 06:53:39,809 INFO L226 Difference]: Without dead ends: 2168 [2022-03-19 06:53:39,810 INFO L911 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 [2022-03-19 06:53:39,810 INFO L912 BasicCegarLoop]: 720 mSDtfsCounter, 2910 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 3409 mSolverCounterSat, 991 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2966 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 4401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 991 IncrementalHoareTripleChecker+Valid, 3409 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-03-19 06:53:39,811 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2966 Valid, 1371 Invalid, 4401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [991 Valid, 3409 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2022-03-19 06:53:39,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2022-03-19 06:53:40,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 1838. [2022-03-19 06:53:40,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1435 states have (on average 1.427177700348432) internal successors, (2048), 1486 states have internal predecessors, (2048), 261 states have call successors, (261), 121 states have call predecessors, (261), 141 states have return successors, (375), 244 states have call predecessors, (375), 245 states have call successors, (375) [2022-03-19 06:53:40,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2684 transitions. [2022-03-19 06:53:40,022 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2684 transitions. Word has length 54 [2022-03-19 06:53:40,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:53:40,022 INFO L478 AbstractCegarLoop]: Abstraction has 1838 states and 2684 transitions. [2022-03-19 06:53:40,022 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 06:53:40,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2684 transitions. [2022-03-19 06:53:40,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-19 06:53:40,024 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:53:40,024 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:53:40,025 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-19 06:53:40,025 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:53:40,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:53:40,025 INFO L85 PathProgramCache]: Analyzing trace with hash 546834136, now seen corresponding path program 1 times [2022-03-19 06:53:40,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:53:40,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1632282218] [2022-03-19 06:53:40,026 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:53:40,026 INFO L85 PathProgramCache]: Analyzing trace with hash 546834136, now seen corresponding path program 2 times [2022-03-19 06:53:40,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:53:40,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699688696] [2022-03-19 06:53:40,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:53:40,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:53:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:40,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:53:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:40,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:53:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:40,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:53:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:40,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 06:53:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:40,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:53:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:40,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 06:53:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:40,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:53:40,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:53:40,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699688696] [2022-03-19 06:53:40,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699688696] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:53:40,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:53:40,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:53:40,510 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:53:40,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1632282218] [2022-03-19 06:53:40,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1632282218] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:53:40,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:53:40,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:53:40,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056125394] [2022-03-19 06:53:40,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:53:40,510 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 06:53:40,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:53:40,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 06:53:40,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-19 06:53:40,511 INFO L87 Difference]: Start difference. First operand 1838 states and 2684 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:53:45,367 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:53:50,082 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:53:54,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:53:54,639 INFO L93 Difference]: Finished difference Result 3657 states and 5559 transitions. [2022-03-19 06:53:54,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-19 06:53:54,640 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-03-19 06:53:54,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:53:54,657 INFO L225 Difference]: With dead ends: 3657 [2022-03-19 06:53:54,657 INFO L226 Difference]: Without dead ends: 3654 [2022-03-19 06:53:54,659 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-03-19 06:53:54,663 INFO L912 BasicCegarLoop]: 1116 mSDtfsCounter, 2060 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 4321 mSolverCounterSat, 836 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2100 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 5159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 836 IncrementalHoareTripleChecker+Valid, 4321 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-03-19 06:53:54,664 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2100 Valid, 1845 Invalid, 5159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [836 Valid, 4321 Invalid, 2 Unknown, 0 Unchecked, 12.8s Time] [2022-03-19 06:53:54,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2022-03-19 06:53:55,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 2949. [2022-03-19 06:53:55,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2337 states have (on average 1.4394522892597348) internal successors, (3364), 2396 states have internal predecessors, (3364), 382 states have call successors, (382), 202 states have call predecessors, (382), 229 states have return successors, (577), 364 states have call predecessors, (577), 366 states have call successors, (577) [2022-03-19 06:53:55,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 4323 transitions. [2022-03-19 06:53:55,080 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 4323 transitions. Word has length 55 [2022-03-19 06:53:55,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:53:55,081 INFO L478 AbstractCegarLoop]: Abstraction has 2949 states and 4323 transitions. [2022-03-19 06:53:55,081 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:53:55,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 4323 transitions. [2022-03-19 06:53:55,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-19 06:53:55,084 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:53:55,084 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:53:55,084 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-19 06:53:55,084 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:53:55,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:53:55,084 INFO L85 PathProgramCache]: Analyzing trace with hash -893598350, now seen corresponding path program 1 times [2022-03-19 06:53:55,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:53:55,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1601541122] [2022-03-19 06:53:55,086 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:53:55,086 INFO L85 PathProgramCache]: Analyzing trace with hash -893598350, now seen corresponding path program 2 times [2022-03-19 06:53:55,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:53:55,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397142929] [2022-03-19 06:53:55,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:53:55,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:53:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:55,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:53:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:55,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:53:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:55,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:53:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:55,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 06:53:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:55,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:53:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:55,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 06:53:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:53:55,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:53:55,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:53:55,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397142929] [2022-03-19 06:53:55,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397142929] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:53:55,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:53:55,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:53:55,611 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:53:55,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1601541122] [2022-03-19 06:53:55,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1601541122] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:53:55,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:53:55,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:53:55,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47495593] [2022-03-19 06:53:55,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:53:55,612 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 06:53:55,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:53:55,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 06:53:55,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-19 06:53:55,613 INFO L87 Difference]: Start difference. First operand 2949 states and 4323 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:54:02,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:54:03,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:54:03,564 INFO L93 Difference]: Finished difference Result 3468 states and 5241 transitions. [2022-03-19 06:54:03,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 06:54:03,565 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-03-19 06:54:03,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:54:03,578 INFO L225 Difference]: With dead ends: 3468 [2022-03-19 06:54:03,578 INFO L226 Difference]: Without dead ends: 3464 [2022-03-19 06:54:03,580 INFO L911 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 [2022-03-19 06:54:03,580 INFO L912 BasicCegarLoop]: 709 mSDtfsCounter, 1926 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 783 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 3223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 783 IncrementalHoareTripleChecker+Valid, 2439 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-03-19 06:54:03,581 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1954 Valid, 1233 Invalid, 3223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [783 Valid, 2439 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2022-03-19 06:54:03,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2022-03-19 06:54:03,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 2974. [2022-03-19 06:54:03,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2363 states have (on average 1.4401184934405418) internal successors, (3403), 2418 states have internal predecessors, (3403), 381 states have call successors, (381), 202 states have call predecessors, (381), 229 states have return successors, (575), 365 states have call predecessors, (575), 365 states have call successors, (575) [2022-03-19 06:54:04,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 4359 transitions. [2022-03-19 06:54:04,005 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 4359 transitions. Word has length 55 [2022-03-19 06:54:04,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:54:04,007 INFO L478 AbstractCegarLoop]: Abstraction has 2974 states and 4359 transitions. [2022-03-19 06:54:04,007 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 06:54:04,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 4359 transitions. [2022-03-19 06:54:04,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-19 06:54:04,009 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:54:04,009 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:54:04,009 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-19 06:54:04,010 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:54:04,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:54:04,010 INFO L85 PathProgramCache]: Analyzing trace with hash 494864556, now seen corresponding path program 1 times [2022-03-19 06:54:04,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:54:04,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1945397889] [2022-03-19 06:54:04,010 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:54:04,010 INFO L85 PathProgramCache]: Analyzing trace with hash 494864556, now seen corresponding path program 2 times [2022-03-19 06:54:04,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:54:04,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682806673] [2022-03-19 06:54:04,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:54:04,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:54:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:04,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:54:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:04,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:54:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:04,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:54:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:04,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 06:54:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:04,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:54:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:04,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 06:54:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:04,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-19 06:54:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:04,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:54:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:04,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:54:04,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:54:04,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682806673] [2022-03-19 06:54:04,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682806673] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:54:04,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:54:04,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:54:04,554 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:54:04,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1945397889] [2022-03-19 06:54:04,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1945397889] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:54:04,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:54:04,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:54:04,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67316087] [2022-03-19 06:54:04,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:54:04,555 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 06:54:04,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:54:04,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 06:54:04,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-19 06:54:04,555 INFO L87 Difference]: Start difference. First operand 2974 states and 4359 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:54:10,518 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:54:12,602 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:54:14,685 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:54:19,353 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:54:24,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:54:24,663 INFO L93 Difference]: Finished difference Result 4254 states and 6463 transitions. [2022-03-19 06:54:24,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-19 06:54:24,663 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 5 states have internal predecessors, (38), 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 56 [2022-03-19 06:54:24,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:54:24,708 INFO L225 Difference]: With dead ends: 4254 [2022-03-19 06:54:24,708 INFO L226 Difference]: Without dead ends: 4246 [2022-03-19 06:54:24,718 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2022-03-19 06:54:24,724 INFO L912 BasicCegarLoop]: 1005 mSDtfsCounter, 3486 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 5605 mSolverCounterSat, 1604 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3537 SdHoareTripleChecker+Valid, 1903 SdHoareTripleChecker+Invalid, 7213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1604 IncrementalHoareTripleChecker+Valid, 5605 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-03-19 06:54:24,724 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3537 Valid, 1903 Invalid, 7213 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1604 Valid, 5605 Invalid, 4 Unknown, 0 Unchecked, 17.2s Time] [2022-03-19 06:54:24,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4246 states. [2022-03-19 06:54:25,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4246 to 3598. [2022-03-19 06:54:25,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 2861 states have (on average 1.4435512058720728) internal successors, (4130), 2928 states have internal predecessors, (4130), 458 states have call successors, (458), 238 states have call predecessors, (458), 278 states have return successors, (709), 449 states have call predecessors, (709), 442 states have call successors, (709) [2022-03-19 06:54:25,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 5297 transitions. [2022-03-19 06:54:25,310 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 5297 transitions. Word has length 56 [2022-03-19 06:54:25,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:54:25,310 INFO L478 AbstractCegarLoop]: Abstraction has 3598 states and 5297 transitions. [2022-03-19 06:54:25,310 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:54:25,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 5297 transitions. [2022-03-19 06:54:25,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-19 06:54:25,312 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:54:25,312 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:54:25,313 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-19 06:54:25,313 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:54:25,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:54:25,313 INFO L85 PathProgramCache]: Analyzing trace with hash -582745306, now seen corresponding path program 1 times [2022-03-19 06:54:25,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:54:25,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1219075652] [2022-03-19 06:54:25,315 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:54:25,315 INFO L85 PathProgramCache]: Analyzing trace with hash -582745306, now seen corresponding path program 2 times [2022-03-19 06:54:25,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:54:25,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966395239] [2022-03-19 06:54:25,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:54:25,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:54:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:25,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:54:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:25,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:54:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:25,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:54:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:25,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 06:54:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:25,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:54:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:25,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 06:54:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:25,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-19 06:54:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:25,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:54:25,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:54:25,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966395239] [2022-03-19 06:54:25,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966395239] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:54:25,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:54:25,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:54:25,882 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:54:25,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1219075652] [2022-03-19 06:54:25,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1219075652] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:54:25,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:54:25,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 06:54:25,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705150833] [2022-03-19 06:54:25,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:54:25,883 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 06:54:25,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:54:25,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 06:54:25,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-19 06:54:25,884 INFO L87 Difference]: Start difference. First operand 3598 states and 5297 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 06:54:32,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:54:37,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:54:37,055 INFO L93 Difference]: Finished difference Result 11208 states and 17196 transitions. [2022-03-19 06:54:37,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-19 06:54:37,055 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2022-03-19 06:54:37,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:54:37,109 INFO L225 Difference]: With dead ends: 11208 [2022-03-19 06:54:37,109 INFO L226 Difference]: Without dead ends: 7864 [2022-03-19 06:54:37,124 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-03-19 06:54:37,125 INFO L912 BasicCegarLoop]: 893 mSDtfsCounter, 3290 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 3252 mSolverCounterSat, 1246 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3364 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 4499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1246 IncrementalHoareTripleChecker+Valid, 3252 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-03-19 06:54:37,125 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3364 Valid, 1587 Invalid, 4499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1246 Valid, 3252 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-03-19 06:54:37,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7864 states. [2022-03-19 06:54:38,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7864 to 6946. [2022-03-19 06:54:38,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6946 states, 5542 states have (on average 1.453446409238542) internal successors, (8055), 5692 states have internal predecessors, (8055), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-19 06:54:38,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 10479 transitions. [2022-03-19 06:54:38,266 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 10479 transitions. Word has length 57 [2022-03-19 06:54:38,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:54:38,267 INFO L478 AbstractCegarLoop]: Abstraction has 6946 states and 10479 transitions. [2022-03-19 06:54:38,267 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 06:54:38,267 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 10479 transitions. [2022-03-19 06:54:38,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-19 06:54:38,268 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:54:38,268 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:54:38,268 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-19 06:54:38,268 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:54:38,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:54:38,269 INFO L85 PathProgramCache]: Analyzing trace with hash -466129244, now seen corresponding path program 1 times [2022-03-19 06:54:38,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:54:38,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1263967534] [2022-03-19 06:54:38,269 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:54:38,269 INFO L85 PathProgramCache]: Analyzing trace with hash -466129244, now seen corresponding path program 2 times [2022-03-19 06:54:38,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:54:38,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648167444] [2022-03-19 06:54:38,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:54:38,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:54:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:38,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:54:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:38,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:54:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:38,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:54:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:38,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 06:54:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:38,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:54:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:38,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 06:54:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:54:38,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:54:38,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:54:38,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648167444] [2022-03-19 06:54:38,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648167444] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:54:38,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:54:38,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:54:38,890 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:54:38,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1263967534] [2022-03-19 06:54:38,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1263967534] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:54:38,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:54:38,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 06:54:38,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051852718] [2022-03-19 06:54:38,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:54:38,891 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 06:54:38,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:54:38,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 06:54:38,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-03-19 06:54:38,891 INFO L87 Difference]: Start difference. First operand 6946 states and 10479 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 06:54:46,882 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:54:51,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:54:53,091 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:54:56,515 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:55:01,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:55:01,625 INFO L93 Difference]: Finished difference Result 14677 states and 22415 transitions. [2022-03-19 06:55:01,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-19 06:55:01,625 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-03-19 06:55:01,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:55:01,660 INFO L225 Difference]: With dead ends: 14677 [2022-03-19 06:55:01,660 INFO L226 Difference]: Without dead ends: 8095 [2022-03-19 06:55:01,729 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2022-03-19 06:55:01,729 INFO L912 BasicCegarLoop]: 899 mSDtfsCounter, 5146 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 5508 mSolverCounterSat, 2193 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5190 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 7705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2193 IncrementalHoareTripleChecker+Valid, 5508 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2022-03-19 06:55:01,730 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [5190 Valid, 1785 Invalid, 7705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2193 Valid, 5508 Invalid, 4 Unknown, 0 Unchecked, 18.7s Time] [2022-03-19 06:55:01,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8095 states. [2022-03-19 06:55:02,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8095 to 6937. [2022-03-19 06:55:02,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 5533 states have (on average 1.452015181637448) internal successors, (8034), 5683 states have internal predecessors, (8034), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-19 06:55:02,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10458 transitions. [2022-03-19 06:55:02,952 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10458 transitions. Word has length 56 [2022-03-19 06:55:02,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:55:02,953 INFO L478 AbstractCegarLoop]: Abstraction has 6937 states and 10458 transitions. [2022-03-19 06:55:02,954 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 5 states have internal predecessors, (40), 4 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 06:55:02,954 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10458 transitions. [2022-03-19 06:55:02,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-19 06:55:02,956 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:55:02,956 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:55:02,956 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-19 06:55:02,956 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:55:02,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:55:02,956 INFO L85 PathProgramCache]: Analyzing trace with hash 613167468, now seen corresponding path program 1 times [2022-03-19 06:55:02,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:55:02,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2140864792] [2022-03-19 06:55:02,957 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:55:02,957 INFO L85 PathProgramCache]: Analyzing trace with hash 613167468, now seen corresponding path program 2 times [2022-03-19 06:55:02,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:55:02,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851468228] [2022-03-19 06:55:02,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:55:02,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:55:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:03,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:55:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:03,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:55:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:03,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:55:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:03,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 06:55:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:03,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:55:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:03,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 06:55:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:03,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 06:55:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:03,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:55:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:03,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:55:03,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:55:03,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851468228] [2022-03-19 06:55:03,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851468228] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:55:03,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:55:03,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:55:03,459 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:55:03,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2140864792] [2022-03-19 06:55:03,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2140864792] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:55:03,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:55:03,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:55:03,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515056749] [2022-03-19 06:55:03,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:55:03,459 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 06:55:03,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:55:03,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 06:55:03,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-19 06:55:03,460 INFO L87 Difference]: Start difference. First operand 6937 states and 10458 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:55:09,520 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:55:11,648 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:55:16,207 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:55:22,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:55:22,787 INFO L93 Difference]: Finished difference Result 7820 states and 12070 transitions. [2022-03-19 06:55:22,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-19 06:55:22,787 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 [2022-03-19 06:55:22,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:55:22,814 INFO L225 Difference]: With dead ends: 7820 [2022-03-19 06:55:22,814 INFO L226 Difference]: Without dead ends: 7815 [2022-03-19 06:55:22,818 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2022-03-19 06:55:22,820 INFO L912 BasicCegarLoop]: 988 mSDtfsCounter, 3648 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 4720 mSolverCounterSat, 1703 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3700 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 6426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1703 IncrementalHoareTripleChecker+Valid, 4720 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2022-03-19 06:55:22,820 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3700 Valid, 1777 Invalid, 6426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1703 Valid, 4720 Invalid, 3 Unknown, 0 Unchecked, 15.5s Time] [2022-03-19 06:55:22,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7815 states. [2022-03-19 06:55:24,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7815 to 6937. [2022-03-19 06:55:24,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 5533 states have (on average 1.4518344478583047) internal successors, (8033), 5683 states have internal predecessors, (8033), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-19 06:55:24,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10457 transitions. [2022-03-19 06:55:24,201 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10457 transitions. Word has length 58 [2022-03-19 06:55:24,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:55:24,201 INFO L478 AbstractCegarLoop]: Abstraction has 6937 states and 10457 transitions. [2022-03-19 06:55:24,201 INFO L479 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) [2022-03-19 06:55:24,201 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10457 transitions. [2022-03-19 06:55:24,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-19 06:55:24,202 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:55:24,202 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:55:24,202 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-19 06:55:24,203 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:55:24,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:55:24,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1929708227, now seen corresponding path program 1 times [2022-03-19 06:55:24,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:55:24,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2105509250] [2022-03-19 06:55:24,204 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:55:24,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1929708227, now seen corresponding path program 2 times [2022-03-19 06:55:24,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:55:24,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018878737] [2022-03-19 06:55:24,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:55:24,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:55:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:24,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:55:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:24,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:55:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:24,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:55:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:24,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 06:55:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:24,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:55:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:24,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-19 06:55:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:24,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-19 06:55:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:24,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:55:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:24,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:55:24,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:55:24,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018878737] [2022-03-19 06:55:24,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018878737] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:55:24,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:55:24,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:55:24,739 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:55:24,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2105509250] [2022-03-19 06:55:24,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2105509250] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:55:24,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:55:24,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:55:24,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6471095] [2022-03-19 06:55:24,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:55:24,740 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 06:55:24,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:55:24,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 06:55:24,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-19 06:55:24,741 INFO L87 Difference]: Start difference. First operand 6937 states and 10457 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:55:30,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:55:32,259 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:55:34,415 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:55:36,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:55:40,800 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:55:44,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:55:44,643 INFO L93 Difference]: Finished difference Result 14740 states and 22518 transitions. [2022-03-19 06:55:44,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 06:55:44,643 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2022-03-19 06:55:44,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:55:44,680 INFO L225 Difference]: With dead ends: 14740 [2022-03-19 06:55:44,680 INFO L226 Difference]: Without dead ends: 7831 [2022-03-19 06:55:44,703 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2022-03-19 06:55:44,703 INFO L912 BasicCegarLoop]: 699 mSDtfsCounter, 1906 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 4666 mSolverCounterSat, 822 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1938 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 5493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 822 IncrementalHoareTripleChecker+Valid, 4666 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2022-03-19 06:55:44,704 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1938 Valid, 1813 Invalid, 5493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [822 Valid, 4666 Invalid, 5 Unknown, 0 Unchecked, 17.5s Time] [2022-03-19 06:55:44,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7831 states. [2022-03-19 06:55:45,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7831 to 6937. [2022-03-19 06:55:45,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 5533 states have (on average 1.4516537140791614) internal successors, (8032), 5683 states have internal predecessors, (8032), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-19 06:55:45,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 10456 transitions. [2022-03-19 06:55:45,968 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 10456 transitions. Word has length 58 [2022-03-19 06:55:45,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:55:45,968 INFO L478 AbstractCegarLoop]: Abstraction has 6937 states and 10456 transitions. [2022-03-19 06:55:45,968 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:55:45,969 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 10456 transitions. [2022-03-19 06:55:45,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-19 06:55:45,970 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:55:45,970 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:55:45,970 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-19 06:55:45,970 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:55:45,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:55:45,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1708625388, now seen corresponding path program 1 times [2022-03-19 06:55:45,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:55:45,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1305531837] [2022-03-19 06:55:45,971 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 06:55:45,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1708625388, now seen corresponding path program 2 times [2022-03-19 06:55:45,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:55:45,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433229128] [2022-03-19 06:55:45,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:55:45,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:55:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:46,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:55:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:46,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:55:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:46,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 06:55:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:46,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 06:55:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:46,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:55:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:46,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-19 06:55:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:46,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-19 06:55:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:46,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:55:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:55:46,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:55:46,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:55:46,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433229128] [2022-03-19 06:55:46,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433229128] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:55:46,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:55:46,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:55:46,736 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:55:46,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1305531837] [2022-03-19 06:55:46,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1305531837] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:55:46,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:55:46,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 06:55:46,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263421776] [2022-03-19 06:55:46,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:55:46,736 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 06:55:46,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:55:46,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 06:55:46,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-03-19 06:55:46,737 INFO L87 Difference]: Start difference. First operand 6937 states and 10456 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:55:52,162 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:55:54,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:55:56,467 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:56:01,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:56:05,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:56:05,019 INFO L93 Difference]: Finished difference Result 14697 states and 22709 transitions. [2022-03-19 06:56:05,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-19 06:56:05,020 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2022-03-19 06:56:05,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:56:05,064 INFO L225 Difference]: With dead ends: 14697 [2022-03-19 06:56:05,064 INFO L226 Difference]: Without dead ends: 7729 [2022-03-19 06:56:05,092 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2022-03-19 06:56:05,093 INFO L912 BasicCegarLoop]: 700 mSDtfsCounter, 1887 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 3874 mSolverCounterSat, 744 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1917 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 4622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 744 IncrementalHoareTripleChecker+Valid, 3874 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-03-19 06:56:05,093 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1917 Valid, 1662 Invalid, 4622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [744 Valid, 3874 Invalid, 4 Unknown, 0 Unchecked, 15.7s Time] [2022-03-19 06:56:05,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7729 states. [2022-03-19 06:56:06,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7729 to 6958. [2022-03-19 06:56:06,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6958 states, 5554 states have (on average 1.4499459848757652) internal successors, (8053), 5704 states have internal predecessors, (8053), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-19 06:56:06,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6958 states to 6958 states and 10477 transitions. [2022-03-19 06:56:06,583 INFO L78 Accepts]: Start accepts. Automaton has 6958 states and 10477 transitions. Word has length 62 [2022-03-19 06:56:06,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:56:06,584 INFO L478 AbstractCegarLoop]: Abstraction has 6958 states and 10477 transitions. [2022-03-19 06:56:06,584 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:56:06,584 INFO L276 IsEmpty]: Start isEmpty. Operand 6958 states and 10477 transitions. [2022-03-19 06:56:06,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-19 06:56:06,585 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:56:06,585 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:56:06,586 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-19 06:56:06,586 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:56:06,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:56:06,586 INFO L85 PathProgramCache]: Analyzing trace with hash -427353988, now seen corresponding path program 1 times [2022-03-19 06:56:06,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:56:06,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1875575510] [2022-03-19 06:56:06,603 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 06:56:06,603 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 06:56:06,603 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 06:56:06,603 INFO L85 PathProgramCache]: Analyzing trace with hash -427353988, now seen corresponding path program 2 times [2022-03-19 06:56:06,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:56:06,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955985886] [2022-03-19 06:56:06,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:56:06,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:56:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:06,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:56:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:07,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:56:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:07,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 06:56:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:07,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-19 06:56:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:07,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:56:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:07,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-19 06:56:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:07,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-19 06:56:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:07,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:56:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:07,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:56:07,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:56:07,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955985886] [2022-03-19 06:56:07,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955985886] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 06:56:07,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049302351] [2022-03-19 06:56:07,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 06:56:07,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 06:56:07,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 06:56:07,423 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 06:56:07,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-19 06:56:12,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 06:56:12,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 06:56:12,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 2816 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-19 06:56:12,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 06:56:12,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:56:12,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 06:56:12,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:56:12,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049302351] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 06:56:12,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 06:56:12,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 18 [2022-03-19 06:56:12,785 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:56:12,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1875575510] [2022-03-19 06:56:12,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1875575510] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:56:12,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:56:12,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 06:56:12,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706211704] [2022-03-19 06:56:12,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:56:12,785 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 06:56:12,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:56:12,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 06:56:12,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-03-19 06:56:12,786 INFO L87 Difference]: Start difference. First operand 6958 states and 10477 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:56:20,986 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:56:25,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:56:25,224 INFO L93 Difference]: Finished difference Result 14738 states and 22750 transitions. [2022-03-19 06:56:25,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 06:56:25,224 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 5 states have internal predecessors, (45), 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 63 [2022-03-19 06:56:25,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:56:25,250 INFO L225 Difference]: With dead ends: 14738 [2022-03-19 06:56:25,250 INFO L226 Difference]: Without dead ends: 7750 [2022-03-19 06:56:25,272 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2022-03-19 06:56:25,273 INFO L912 BasicCegarLoop]: 700 mSDtfsCounter, 2786 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 4113 mSolverCounterSat, 1216 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2816 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 5330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1216 IncrementalHoareTripleChecker+Valid, 4113 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-03-19 06:56:25,273 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2816 Valid, 1720 Invalid, 5330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1216 Valid, 4113 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2022-03-19 06:56:25,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7750 states. [2022-03-19 06:56:26,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7750 to 6979. [2022-03-19 06:56:26,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6979 states, 5575 states have (on average 1.4482511210762332) internal successors, (8074), 5725 states have internal predecessors, (8074), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-19 06:56:26,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 10498 transitions. [2022-03-19 06:56:26,810 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 10498 transitions. Word has length 63 [2022-03-19 06:56:26,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:56:26,811 INFO L478 AbstractCegarLoop]: Abstraction has 6979 states and 10498 transitions. [2022-03-19 06:56:26,812 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:56:26,812 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 10498 transitions. [2022-03-19 06:56:26,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-19 06:56:26,814 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:56:26,814 INFO L500 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:56:26,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-19 06:56:27,039 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-19 06:56:27,040 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:56:27,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:56:27,040 INFO L85 PathProgramCache]: Analyzing trace with hash 2076762092, now seen corresponding path program 3 times [2022-03-19 06:56:27,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:56:27,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [326220548] [2022-03-19 06:56:27,041 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 06:56:27,041 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 06:56:27,042 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 06:56:27,042 INFO L85 PathProgramCache]: Analyzing trace with hash 2076762092, now seen corresponding path program 4 times [2022-03-19 06:56:27,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:56:27,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918557195] [2022-03-19 06:56:27,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:56:27,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:56:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:27,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:56:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:27,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:56:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:27,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-19 06:56:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:27,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:56:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:27,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:56:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:27,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-19 06:56:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:27,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 06:56:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:27,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:56:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:27,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:56:27,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:56:27,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918557195] [2022-03-19 06:56:27,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918557195] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 06:56:27,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860287337] [2022-03-19 06:56:27,903 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 06:56:27,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 06:56:27,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 06:56:27,904 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 06:56:27,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-19 06:56:28,728 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 06:56:28,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 06:56:28,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 2831 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-19 06:56:28,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 06:56:28,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:56:28,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 06:56:29,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:56:29,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860287337] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 06:56:29,209 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 06:56:29,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 20 [2022-03-19 06:56:29,210 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:56:29,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [326220548] [2022-03-19 06:56:29,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [326220548] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:56:29,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:56:29,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 06:56:29,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700112435] [2022-03-19 06:56:29,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:56:29,210 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 06:56:29,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:56:29,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 06:56:29,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-19 06:56:29,211 INFO L87 Difference]: Start difference. First operand 6979 states and 10498 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:56:35,282 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:56:39,778 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:56:44,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:56:44,727 INFO L93 Difference]: Finished difference Result 14779 states and 22791 transitions. [2022-03-19 06:56:44,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-19 06:56:44,728 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2022-03-19 06:56:44,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:56:44,756 INFO L225 Difference]: With dead ends: 14779 [2022-03-19 06:56:44,757 INFO L226 Difference]: Without dead ends: 7771 [2022-03-19 06:56:44,786 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 131 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=199, Invalid=731, Unknown=0, NotChecked=0, Total=930 [2022-03-19 06:56:44,788 INFO L912 BasicCegarLoop]: 700 mSDtfsCounter, 1590 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 5787 mSolverCounterSat, 681 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 6470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 5787 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-03-19 06:56:44,788 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1620 Valid, 2014 Invalid, 6470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 5787 Invalid, 2 Unknown, 0 Unchecked, 12.8s Time] [2022-03-19 06:56:44,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7771 states. [2022-03-19 06:56:46,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7771 to 7000. [2022-03-19 06:56:46,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7000 states, 5596 states have (on average 1.4465689778413153) internal successors, (8095), 5746 states have internal predecessors, (8095), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-19 06:56:46,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7000 states to 7000 states and 10519 transitions. [2022-03-19 06:56:46,307 INFO L78 Accepts]: Start accepts. Automaton has 7000 states and 10519 transitions. Word has length 64 [2022-03-19 06:56:46,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:56:46,308 INFO L478 AbstractCegarLoop]: Abstraction has 7000 states and 10519 transitions. [2022-03-19 06:56:46,308 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:56:46,308 INFO L276 IsEmpty]: Start isEmpty. Operand 7000 states and 10519 transitions. [2022-03-19 06:56:46,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-19 06:56:46,309 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:56:46,309 INFO L500 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:56:46,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-19 06:56:46,523 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-19 06:56:46,524 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:56:46,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:56:46,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1900018052, now seen corresponding path program 5 times [2022-03-19 06:56:46,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:56:46,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1089834527] [2022-03-19 06:56:46,526 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 06:56:46,526 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 06:56:46,526 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 06:56:46,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1900018052, now seen corresponding path program 6 times [2022-03-19 06:56:46,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:56:46,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856051450] [2022-03-19 06:56:46,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:56:46,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:56:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:46,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:56:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:46,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:56:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:47,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 06:56:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:47,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-19 06:56:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:47,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:56:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:47,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 06:56:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:47,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-19 06:56:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:47,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:56:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:56:47,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:56:47,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:56:47,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856051450] [2022-03-19 06:56:47,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856051450] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 06:56:47,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873561198] [2022-03-19 06:56:47,241 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 06:56:47,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 06:56:47,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 06:56:47,243 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 06:56:47,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-19 06:57:04,842 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-19 06:57:04,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 06:57:04,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 2846 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-19 06:57:04,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 06:57:05,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:57:05,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 06:57:05,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:57:05,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873561198] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 06:57:05,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 06:57:05,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 7] total 24 [2022-03-19 06:57:05,464 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:57:05,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1089834527] [2022-03-19 06:57:05,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1089834527] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:57:05,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:57:05,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 06:57:05,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877499695] [2022-03-19 06:57:05,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:57:05,464 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 06:57:05,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:57:05,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 06:57:05,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2022-03-19 06:57:05,465 INFO L87 Difference]: Start difference. First operand 7000 states and 10519 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:57:11,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:57:13,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:57:18,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:57:22,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:57:22,373 INFO L93 Difference]: Finished difference Result 14820 states and 22832 transitions. [2022-03-19 06:57:22,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-19 06:57:22,374 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2022-03-19 06:57:22,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:57:22,401 INFO L225 Difference]: With dead ends: 14820 [2022-03-19 06:57:22,401 INFO L226 Difference]: Without dead ends: 7792 [2022-03-19 06:57:22,425 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=248, Invalid=1012, Unknown=0, NotChecked=0, Total=1260 [2022-03-19 06:57:22,426 INFO L912 BasicCegarLoop]: 700 mSDtfsCounter, 1859 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 4699 mSolverCounterSat, 750 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 5451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 750 IncrementalHoareTripleChecker+Valid, 4699 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-03-19 06:57:22,426 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1889 Valid, 1846 Invalid, 5451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [750 Valid, 4699 Invalid, 2 Unknown, 0 Unchecked, 13.8s Time] [2022-03-19 06:57:22,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2022-03-19 06:57:23,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7021. [2022-03-19 06:57:23,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7021 states, 5617 states have (on average 1.4448994124977745) internal successors, (8116), 5767 states have internal predecessors, (8116), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-19 06:57:23,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7021 states to 7021 states and 10540 transitions. [2022-03-19 06:57:23,954 INFO L78 Accepts]: Start accepts. Automaton has 7021 states and 10540 transitions. Word has length 65 [2022-03-19 06:57:23,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:57:23,954 INFO L478 AbstractCegarLoop]: Abstraction has 7021 states and 10540 transitions. [2022-03-19 06:57:23,955 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:57:23,955 INFO L276 IsEmpty]: Start isEmpty. Operand 7021 states and 10540 transitions. [2022-03-19 06:57:23,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-19 06:57:23,956 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:57:23,956 INFO L500 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:57:23,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-19 06:57:24,183 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 06:57:24,184 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:57:24,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:57:24,184 INFO L85 PathProgramCache]: Analyzing trace with hash -626150932, now seen corresponding path program 7 times [2022-03-19 06:57:24,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:57:24,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [217777934] [2022-03-19 06:57:24,185 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 06:57:24,185 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 06:57:24,185 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 06:57:24,185 INFO L85 PathProgramCache]: Analyzing trace with hash -626150932, now seen corresponding path program 8 times [2022-03-19 06:57:24,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:57:24,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660245634] [2022-03-19 06:57:24,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:57:24,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:57:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:57:24,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:57:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:57:24,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:57:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:57:24,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 06:57:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:57:24,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 06:57:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:57:24,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:57:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:57:24,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-19 06:57:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:57:24,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-19 06:57:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:57:24,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:57:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:57:24,986 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:57:24,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:57:24,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660245634] [2022-03-19 06:57:24,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660245634] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 06:57:24,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901074203] [2022-03-19 06:57:24,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 06:57:24,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 06:57:24,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 06:57:25,004 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 06:57:25,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-19 06:57:30,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 06:57:30,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 06:57:30,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 2861 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-19 06:57:30,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 06:57:30,737 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:57:30,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 06:57:31,233 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:57:31,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901074203] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 06:57:31,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 06:57:31,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8, 8] total 27 [2022-03-19 06:57:31,234 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:57:31,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [217777934] [2022-03-19 06:57:31,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [217777934] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:57:31,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:57:31,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-19 06:57:31,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237911986] [2022-03-19 06:57:31,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:57:31,235 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-19 06:57:31,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:57:31,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-19 06:57:31,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2022-03-19 06:57:31,235 INFO L87 Difference]: Start difference. First operand 7021 states and 10540 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:57:43,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:57:49,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:57:49,064 INFO L93 Difference]: Finished difference Result 14861 states and 22873 transitions. [2022-03-19 06:57:49,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-19 06:57:49,064 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2022-03-19 06:57:49,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:57:49,090 INFO L225 Difference]: With dead ends: 14861 [2022-03-19 06:57:49,090 INFO L226 Difference]: Without dead ends: 7813 [2022-03-19 06:57:49,116 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=300, Invalid=1260, Unknown=0, NotChecked=0, Total=1560 [2022-03-19 06:57:49,116 INFO L912 BasicCegarLoop]: 700 mSDtfsCounter, 1859 mSDsluCounter, 1698 mSDsCounter, 0 mSdLazyCounter, 6966 mSolverCounterSat, 754 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 2398 SdHoareTripleChecker+Invalid, 7721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 754 IncrementalHoareTripleChecker+Valid, 6966 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-03-19 06:57:49,116 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1889 Valid, 2398 Invalid, 7721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [754 Valid, 6966 Invalid, 1 Unknown, 0 Unchecked, 14.4s Time] [2022-03-19 06:57:49,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7813 states. [2022-03-19 06:57:50,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7813 to 7042. [2022-03-19 06:57:50,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7042 states, 5638 states have (on average 1.443242284498049) internal successors, (8137), 5788 states have internal predecessors, (8137), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-19 06:57:50,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7042 states to 7042 states and 10561 transitions. [2022-03-19 06:57:50,663 INFO L78 Accepts]: Start accepts. Automaton has 7042 states and 10561 transitions. Word has length 66 [2022-03-19 06:57:50,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:57:50,663 INFO L478 AbstractCegarLoop]: Abstraction has 7042 states and 10561 transitions. [2022-03-19 06:57:50,664 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:57:50,664 INFO L276 IsEmpty]: Start isEmpty. Operand 7042 states and 10561 transitions. [2022-03-19 06:57:50,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-19 06:57:50,665 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:57:50,665 INFO L500 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:57:50,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-19 06:57:50,879 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-19 06:57:50,879 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:57:50,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:57:50,880 INFO L85 PathProgramCache]: Analyzing trace with hash 209024124, now seen corresponding path program 9 times [2022-03-19 06:57:50,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:57:50,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [676542154] [2022-03-19 06:57:50,881 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 06:57:50,881 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 06:57:50,881 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 06:57:50,881 INFO L85 PathProgramCache]: Analyzing trace with hash 209024124, now seen corresponding path program 10 times [2022-03-19 06:57:50,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:57:50,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309538745] [2022-03-19 06:57:50,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:57:50,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:57:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:57:51,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:57:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:57:51,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:57:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:57:51,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-19 06:57:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:57:51,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-19 06:57:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:57:51,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:57:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:57:51,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-19 06:57:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:57:51,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-19 06:57:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:57:51,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:57:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:57:51,640 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:57:51,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:57:51,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309538745] [2022-03-19 06:57:51,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309538745] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 06:57:51,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678122902] [2022-03-19 06:57:51,641 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 06:57:51,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 06:57:51,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 06:57:51,642 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 06:57:51,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-19 06:57:52,694 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 06:57:52,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 06:57:52,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 2876 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-19 06:57:52,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 06:57:52,988 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:57:52,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 06:57:53,457 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:57:53,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678122902] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 06:57:53,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 06:57:53,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 9] total 30 [2022-03-19 06:57:53,458 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:57:53,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [676542154] [2022-03-19 06:57:53,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [676542154] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:57:53,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:57:53,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-19 06:57:53,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812444217] [2022-03-19 06:57:53,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:57:53,459 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-19 06:57:53,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:57:53,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-19 06:57:53,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=709, Unknown=0, NotChecked=0, Total=870 [2022-03-19 06:57:53,459 INFO L87 Difference]: Start difference. First operand 7042 states and 10561 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:58:00,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:58:06,516 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:58:12,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:58:12,567 INFO L93 Difference]: Finished difference Result 14902 states and 22914 transitions. [2022-03-19 06:58:12,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-19 06:58:12,568 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2022-03-19 06:58:12,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:58:12,596 INFO L225 Difference]: With dead ends: 14902 [2022-03-19 06:58:12,596 INFO L226 Difference]: Without dead ends: 7834 [2022-03-19 06:58:12,620 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=354, Invalid=1538, Unknown=0, NotChecked=0, Total=1892 [2022-03-19 06:58:12,621 INFO L912 BasicCegarLoop]: 700 mSDtfsCounter, 1358 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 7000 mSolverCounterSat, 553 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 2237 SdHoareTripleChecker+Invalid, 7555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 7000 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-03-19 06:58:12,621 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1388 Valid, 2237 Invalid, 7555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 7000 Invalid, 2 Unknown, 0 Unchecked, 15.3s Time] [2022-03-19 06:58:12,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7834 states. [2022-03-19 06:58:14,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7834 to 7063. [2022-03-19 06:58:14,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7063 states, 5659 states have (on average 1.4415974553808093) internal successors, (8158), 5809 states have internal predecessors, (8158), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-19 06:58:14,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 10582 transitions. [2022-03-19 06:58:14,183 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 10582 transitions. Word has length 67 [2022-03-19 06:58:14,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:58:14,184 INFO L478 AbstractCegarLoop]: Abstraction has 7063 states and 10582 transitions. [2022-03-19 06:58:14,184 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:58:14,184 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 10582 transitions. [2022-03-19 06:58:14,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-19 06:58:14,185 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:58:14,185 INFO L500 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:58:14,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-19 06:58:14,399 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-19 06:58:14,401 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:58:14,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:58:14,401 INFO L85 PathProgramCache]: Analyzing trace with hash -805010815, now seen corresponding path program 1 times [2022-03-19 06:58:14,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:58:14,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [522435588] [2022-03-19 06:58:14,402 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 06:58:14,402 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 06:58:14,403 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 06:58:14,403 INFO L85 PathProgramCache]: Analyzing trace with hash -805010815, now seen corresponding path program 2 times [2022-03-19 06:58:14,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:58:14,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228371764] [2022-03-19 06:58:14,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:58:14,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:58:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:14,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:58:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:14,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:58:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:15,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 06:58:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:15,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-19 06:58:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:15,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:58:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:15,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-19 06:58:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:15,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-19 06:58:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:15,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:58:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:15,246 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:58:15,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:58:15,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228371764] [2022-03-19 06:58:15,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228371764] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 06:58:15,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785085765] [2022-03-19 06:58:15,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 06:58:15,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 06:58:15,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 06:58:15,248 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 06:58:15,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-19 06:58:18,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 06:58:18,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 06:58:18,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 2892 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-19 06:58:18,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 06:58:19,181 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:58:19,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 06:58:19,980 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:58:19,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785085765] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 06:58:19,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 06:58:19,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10, 10] total 33 [2022-03-19 06:58:19,980 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:58:19,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [522435588] [2022-03-19 06:58:19,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [522435588] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:58:19,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:58:19,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-19 06:58:19,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709095416] [2022-03-19 06:58:19,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:58:19,981 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-19 06:58:19,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:58:19,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-19 06:58:19,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=857, Unknown=0, NotChecked=0, Total=1056 [2022-03-19 06:58:19,982 INFO L87 Difference]: Start difference. First operand 7063 states and 10582 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:58:33,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:58:39,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:58:39,937 INFO L93 Difference]: Finished difference Result 14943 states and 22955 transitions. [2022-03-19 06:58:39,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-19 06:58:39,938 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2022-03-19 06:58:39,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:58:39,994 INFO L225 Difference]: With dead ends: 14943 [2022-03-19 06:58:39,994 INFO L226 Difference]: Without dead ends: 7855 [2022-03-19 06:58:40,021 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=418, Invalid=1838, Unknown=0, NotChecked=0, Total=2256 [2022-03-19 06:58:40,022 INFO L912 BasicCegarLoop]: 700 mSDtfsCounter, 1875 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 8472 mSolverCounterSat, 766 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1905 SdHoareTripleChecker+Valid, 2766 SdHoareTripleChecker+Invalid, 9239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 766 IncrementalHoareTripleChecker+Valid, 8472 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-03-19 06:58:40,022 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1905 Valid, 2766 Invalid, 9239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [766 Valid, 8472 Invalid, 1 Unknown, 0 Unchecked, 16.1s Time] [2022-03-19 06:58:40,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7855 states. [2022-03-19 06:58:41,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7855 to 7084. [2022-03-19 06:58:41,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7084 states, 5680 states have (on average 1.4399647887323943) internal successors, (8179), 5830 states have internal predecessors, (8179), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-19 06:58:41,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7084 states to 7084 states and 10603 transitions. [2022-03-19 06:58:41,638 INFO L78 Accepts]: Start accepts. Automaton has 7084 states and 10603 transitions. Word has length 69 [2022-03-19 06:58:41,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:58:41,638 INFO L478 AbstractCegarLoop]: Abstraction has 7084 states and 10603 transitions. [2022-03-19 06:58:41,639 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:58:41,639 INFO L276 IsEmpty]: Start isEmpty. Operand 7084 states and 10603 transitions. [2022-03-19 06:58:41,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-19 06:58:41,640 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:58:41,640 INFO L500 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:58:41,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-19 06:58:41,867 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-19 06:58:41,868 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:58:41,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:58:41,868 INFO L85 PathProgramCache]: Analyzing trace with hash -226008452, now seen corresponding path program 11 times [2022-03-19 06:58:41,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:58:41,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1426561527] [2022-03-19 06:58:41,869 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 06:58:41,869 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 06:58:41,869 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 06:58:41,869 INFO L85 PathProgramCache]: Analyzing trace with hash -226008452, now seen corresponding path program 12 times [2022-03-19 06:58:41,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:58:41,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918638501] [2022-03-19 06:58:41,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:58:41,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:58:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:42,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:58:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:42,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:58:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:42,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-19 06:58:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:42,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 06:58:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:42,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:58:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:42,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-19 06:58:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:42,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-19 06:58:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:42,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:58:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:58:42,846 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:58:42,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:58:42,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918638501] [2022-03-19 06:58:42,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918638501] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 06:58:42,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107521014] [2022-03-19 06:58:42,847 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 06:58:42,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 06:58:42,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 06:58:42,848 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 06:58:42,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-19 06:59:24,419 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-19 06:59:24,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 06:59:24,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 2906 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-19 06:59:24,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 06:59:24,880 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:59:24,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 06:59:25,609 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:59:25,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107521014] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 06:59:25,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 06:59:25,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 36 [2022-03-19 06:59:25,610 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 06:59:25,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1426561527] [2022-03-19 06:59:25,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1426561527] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 06:59:25,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 06:59:25,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-19 06:59:25,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129106678] [2022-03-19 06:59:25,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 06:59:25,610 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-19 06:59:25,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:25,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-19 06:59:25,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1023, Unknown=0, NotChecked=0, Total=1260 [2022-03-19 06:59:25,611 INFO L87 Difference]: Start difference. First operand 7084 states and 10603 transitions. Second operand has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:59:33,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:35,636 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:37,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:39,880 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:42,002 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:47,484 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 06:59:53,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 06:59:53,200 INFO L93 Difference]: Finished difference Result 14984 states and 22996 transitions. [2022-03-19 06:59:53,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-19 06:59:53,201 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2022-03-19 06:59:53,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 06:59:53,231 INFO L225 Difference]: With dead ends: 14984 [2022-03-19 06:59:53,231 INFO L226 Difference]: Without dead ends: 7876 [2022-03-19 06:59:53,254 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=484, Invalid=2168, Unknown=0, NotChecked=0, Total=2652 [2022-03-19 06:59:53,255 INFO L912 BasicCegarLoop]: 700 mSDtfsCounter, 1547 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 5951 mSolverCounterSat, 681 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 6638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 5951 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time [2022-03-19 06:59:53,255 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1577 Valid, 1966 Invalid, 6638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 5951 Invalid, 6 Unknown, 0 Unchecked, 23.5s Time] [2022-03-19 06:59:53,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7876 states. [2022-03-19 06:59:54,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7876 to 7105. [2022-03-19 06:59:54,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7105 states, 5701 states have (on average 1.4383441501490966) internal successors, (8200), 5851 states have internal predecessors, (8200), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-19 06:59:54,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 10624 transitions. [2022-03-19 06:59:54,911 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 10624 transitions. Word has length 69 [2022-03-19 06:59:54,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 06:59:54,911 INFO L478 AbstractCegarLoop]: Abstraction has 7105 states and 10624 transitions. [2022-03-19 06:59:54,911 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 06:59:54,911 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 10624 transitions. [2022-03-19 06:59:54,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-19 06:59:54,912 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 06:59:54,912 INFO L500 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 06:59:54,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-19 06:59:55,135 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 06:59:55,136 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 06:59:55,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 06:59:55,136 INFO L85 PathProgramCache]: Analyzing trace with hash -271460884, now seen corresponding path program 13 times [2022-03-19 06:59:55,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 06:59:55,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2098526097] [2022-03-19 06:59:55,137 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 06:59:55,137 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 06:59:55,137 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 06:59:55,137 INFO L85 PathProgramCache]: Analyzing trace with hash -271460884, now seen corresponding path program 14 times [2022-03-19 06:59:55,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 06:59:55,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858706178] [2022-03-19 06:59:55,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 06:59:55,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 06:59:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:55,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 06:59:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:55,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 06:59:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:56,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 06:59:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:56,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-19 06:59:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:56,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:59:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:56,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 06:59:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:56,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-19 06:59:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:56,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 06:59:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 06:59:56,504 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 06:59:56,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 06:59:56,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858706178] [2022-03-19 06:59:56,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858706178] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 06:59:56,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099732462] [2022-03-19 06:59:56,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 06:59:56,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 06:59:56,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 06:59:56,506 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 06:59:56,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-19 07:00:01,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 07:00:01,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 07:00:01,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 2921 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-19 07:00:01,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 07:00:02,399 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:00:02,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 07:00:03,825 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:00:03,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099732462] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 07:00:03,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 07:00:03,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12, 12] total 39 [2022-03-19 07:00:03,826 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:00:03,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2098526097] [2022-03-19 07:00:03,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2098526097] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:03,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:03,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-19 07:00:03,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171667319] [2022-03-19 07:00:03,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:00:03,827 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-19 07:00:03,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:03,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-19 07:00:03,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1199, Unknown=0, NotChecked=0, Total=1482 [2022-03-19 07:00:03,828 INFO L87 Difference]: Start difference. First operand 7105 states and 10624 transitions. Second operand has 20 states, 20 states have (on average 2.6) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 07:00:16,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:00:22,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:00:22,709 INFO L93 Difference]: Finished difference Result 15025 states and 23037 transitions. [2022-03-19 07:00:22,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-19 07:00:22,710 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2022-03-19 07:00:22,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:00:22,751 INFO L225 Difference]: With dead ends: 15025 [2022-03-19 07:00:22,751 INFO L226 Difference]: Without dead ends: 7897 [2022-03-19 07:00:22,788 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=560, Invalid=2520, Unknown=0, NotChecked=0, Total=3080 [2022-03-19 07:00:22,788 INFO L912 BasicCegarLoop]: 700 mSDtfsCounter, 2519 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 4794 mSolverCounterSat, 1099 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2549 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 5894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1099 IncrementalHoareTripleChecker+Valid, 4794 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-03-19 07:00:22,789 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2549 Valid, 1759 Invalid, 5894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1099 Valid, 4794 Invalid, 1 Unknown, 0 Unchecked, 14.0s Time] [2022-03-19 07:00:22,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7897 states. [2022-03-19 07:00:24,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7897 to 7126. [2022-03-19 07:00:24,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7126 states, 5722 states have (on average 1.4367354072002796) internal successors, (8221), 5872 states have internal predecessors, (8221), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-19 07:00:24,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7126 states to 7126 states and 10645 transitions. [2022-03-19 07:00:24,702 INFO L78 Accepts]: Start accepts. Automaton has 7126 states and 10645 transitions. Word has length 70 [2022-03-19 07:00:24,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:00:24,702 INFO L478 AbstractCegarLoop]: Abstraction has 7126 states and 10645 transitions. [2022-03-19 07:00:24,702 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 07:00:24,702 INFO L276 IsEmpty]: Start isEmpty. Operand 7126 states and 10645 transitions. [2022-03-19 07:00:24,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-19 07:00:24,703 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:00:24,703 INFO L500 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:00:24,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-19 07:00:24,913 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 07:00:24,914 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:00:24,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:00:24,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1680486276, now seen corresponding path program 15 times [2022-03-19 07:00:24,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:24,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1773179212] [2022-03-19 07:00:24,918 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 07:00:24,918 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 07:00:24,918 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:00:24,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1680486276, now seen corresponding path program 16 times [2022-03-19 07:00:24,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:00:24,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351343176] [2022-03-19 07:00:24,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:00:24,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:00:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:25,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:00:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:25,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:00:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:26,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-19 07:00:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:26,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-19 07:00:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:26,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:26,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-19 07:00:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:26,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-19 07:00:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:26,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:00:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:00:26,359 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:00:26,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:00:26,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351343176] [2022-03-19 07:00:26,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351343176] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 07:00:26,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446198747] [2022-03-19 07:00:26,359 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 07:00:26,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 07:00:26,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 07:00:26,361 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 07:00:26,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-19 07:00:27,819 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 07:00:27,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 07:00:27,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 2936 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-19 07:00:27,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 07:00:28,842 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:00:28,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 07:00:30,019 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:00:30,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446198747] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 07:00:30,019 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 07:00:30,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13, 13] total 42 [2022-03-19 07:00:30,019 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:00:30,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1773179212] [2022-03-19 07:00:30,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1773179212] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:00:30,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:00:30,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-19 07:00:30,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935721428] [2022-03-19 07:00:30,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:00:30,020 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-19 07:00:30,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:00:30,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-19 07:00:30,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=1384, Unknown=0, NotChecked=0, Total=1722 [2022-03-19 07:00:30,021 INFO L87 Difference]: Start difference. First operand 7126 states and 10645 transitions. Second operand has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 07:00:42,307 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:00:44,427 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:00:46,559 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:00:48,684 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:00:50,817 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:00:52,957 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:00:55,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:01:02,976 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-19 07:01:10,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:01:10,654 INFO L93 Difference]: Finished difference Result 15066 states and 23078 transitions. [2022-03-19 07:01:10,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-19 07:01:10,655 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-03-19 07:01:10,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:01:10,700 INFO L225 Difference]: With dead ends: 15066 [2022-03-19 07:01:10,700 INFO L226 Difference]: Without dead ends: 7918 [2022-03-19 07:01:10,726 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=640, Invalid=2900, Unknown=0, NotChecked=0, Total=3540 [2022-03-19 07:01:10,727 INFO L912 BasicCegarLoop]: 700 mSDtfsCounter, 2324 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 8732 mSolverCounterSat, 1052 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2354 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 9792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1052 IncrementalHoareTripleChecker+Valid, 8732 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.8s IncrementalHoareTripleChecker+Time [2022-03-19 07:01:10,728 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2354 Valid, 2911 Invalid, 9792 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1052 Valid, 8732 Invalid, 8 Unknown, 0 Unchecked, 35.8s Time] [2022-03-19 07:01:10,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7918 states. [2022-03-19 07:01:12,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7918 to 7147. [2022-03-19 07:01:12,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7147 states, 5743 states have (on average 1.4351384293923037) internal successors, (8242), 5893 states have internal predecessors, (8242), 873 states have call successors, (873), 436 states have call predecessors, (873), 530 states have return successors, (1551), 849 states have call predecessors, (1551), 860 states have call successors, (1551) [2022-03-19 07:01:12,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 10666 transitions. [2022-03-19 07:01:12,472 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 10666 transitions. Word has length 71 [2022-03-19 07:01:12,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:01:12,472 INFO L478 AbstractCegarLoop]: Abstraction has 7147 states and 10666 transitions. [2022-03-19 07:01:12,472 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 07:01:12,472 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 10666 transitions. [2022-03-19 07:01:12,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-19 07:01:12,473 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:01:12,473 INFO L500 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:01:12,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-19 07:01:12,699 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 07:01:12,699 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:01:12,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:01:12,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1884366828, now seen corresponding path program 17 times [2022-03-19 07:01:12,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:01:12,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2072618683] [2022-03-19 07:01:12,701 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 07:01:12,701 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-19 07:01:12,701 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-19 07:01:12,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1884366828, now seen corresponding path program 18 times [2022-03-19 07:01:12,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:01:12,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494363799] [2022-03-19 07:01:12,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:01:12,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:01:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:12,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:01:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:12,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:01:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:13,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-19 07:01:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:13,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-19 07:01:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:14,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:14,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-19 07:01:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:14,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-19 07:01:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:14,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:01:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:01:14,264 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:01:14,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:01:14,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494363799] [2022-03-19 07:01:14,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494363799] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 07:01:14,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447763734] [2022-03-19 07:01:14,265 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 07:01:14,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 07:01:14,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 07:01:14,266 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 07:01:14,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process