/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers/parport.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-07 01:01:25,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-07 01:01:25,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-07 01:01:25,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-07 01:01:25,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-07 01:01:25,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-07 01:01:25,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-07 01:01:25,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-07 01:01:25,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-07 01:01:25,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-07 01:01:25,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-07 01:01:25,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-07 01:01:25,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-07 01:01:25,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-07 01:01:25,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-07 01:01:25,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-07 01:01:25,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-07 01:01:25,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-07 01:01:25,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-07 01:01:25,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-07 01:01:25,899 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-07 01:01:25,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-07 01:01:25,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-07 01:01:25,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-07 01:01:25,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-07 01:01:25,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-07 01:01:25,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-07 01:01:25,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-07 01:01:25,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-07 01:01:25,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-07 01:01:25,921 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-07 01:01:25,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-07 01:01:25,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-07 01:01:25,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-07 01:01:25,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-07 01:01:25,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-07 01:01:25,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-07 01:01:25,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-07 01:01:25,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-07 01:01:25,923 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-07 01:01:25,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-07 01:01:25,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-07 01:01:25,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-07 01:01:25,923 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-07 01:01:25,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-07 01:01:25,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 01:01:25,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-07 01:01:25,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-07 01:01:25,924 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-07 01:01:25,924 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-07 01:01:25,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-07 01:01:25,924 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-07 01:01:25,924 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-07 01:01:26,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-07 01:01:26,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-07 01:01:26,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-07 01:01:26,306 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-07 01:01:26,319 INFO L275 PluginConnector]: CDTParser initialized [2022-04-07 01:01:26,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/parport.i.cil-2.c [2022-04-07 01:01:26,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33ec9ff89/e4e344a4a97641ca9036abc11a421655/FLAG75fcec5cc [2022-04-07 01:01:26,972 INFO L306 CDTParser]: Found 1 translation units. [2022-04-07 01:01:26,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/parport.i.cil-2.c [2022-04-07 01:01:27,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33ec9ff89/e4e344a4a97641ca9036abc11a421655/FLAG75fcec5cc [2022-04-07 01:01:27,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33ec9ff89/e4e344a4a97641ca9036abc11a421655 [2022-04-07 01:01:27,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-07 01:01:27,182 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-07 01:01:27,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-07 01:01:27,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-07 01:01:27,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-07 01:01:27,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 01:01:27" (1/1) ... [2022-04-07 01:01:27,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@613af428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 01:01:27, skipping insertion in model container [2022-04-07 01:01:27,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 01:01:27" (1/1) ... [2022-04-07 01:01:27,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-07 01:01:27,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-07 01:01:27,979 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/parport.i.cil-2.c[86591,86604] [2022-04-07 01:01:28,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 01:01:28,875 INFO L203 MainTranslator]: Completed pre-run [2022-04-07 01:01:28,933 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/parport.i.cil-2.c[86591,86604] [2022-04-07 01:01:29,160 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 01:01:29,208 INFO L208 MainTranslator]: Completed translation [2022-04-07 01:01:29,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 01:01:29 WrapperNode [2022-04-07 01:01:29,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-07 01:01:29,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-07 01:01:29,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-07 01:01:29,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-07 01:01:29,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 01:01:29" (1/1) ... [2022-04-07 01:01:29,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 01:01:29" (1/1) ... [2022-04-07 01:01:29,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 01:01:29" (1/1) ... [2022-04-07 01:01:29,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 01:01:29" (1/1) ... [2022-04-07 01:01:29,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 01:01:29" (1/1) ... [2022-04-07 01:01:29,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 01:01:29" (1/1) ... [2022-04-07 01:01:29,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 01:01:29" (1/1) ... [2022-04-07 01:01:29,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-07 01:01:29,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-07 01:01:29,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-07 01:01:29,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-07 01:01:29,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 01:01:29" (1/1) ... [2022-04-07 01:01:29,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 01:01:29,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:01:29,734 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) [2022-04-07 01:01:29,753 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 [2022-04-07 01:01:29,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-07 01:01:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-07 01:01:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2022-04-07 01:01:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2022-04-07 01:01:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~TO~VOID [2022-04-07 01:01:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-07 01:01:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-07 01:01:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-04-07 01:01:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlIntegerToUnicodeString [2022-04-07 01:01:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlUnicodeStringToInteger [2022-04-07 01:01:29,781 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareUnicodeString [2022-04-07 01:01:29,781 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAppendUnicodeStringToString [2022-04-07 01:01:29,781 INFO L138 BoogieDeclarations]: Found implementation of procedure READ_PORT_UCHAR [2022-04-07 01:01:29,781 INFO L138 BoogieDeclarations]: Found implementation of procedure WRITE_PORT_UCHAR [2022-04-07 01:01:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-04-07 01:01:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2022-04-07 01:01:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-04-07 01:01:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeDpc [2022-04-07 01:01:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInsertQueueDpc [2022-04-07 01:01:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSynchronizeExecution [2022-04-07 01:01:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTimeIncrement [2022-04-07 01:01:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAcquireCancelSpinLock [2022-04-07 01:01:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateErrorLogEntry [2022-04-07 01:01:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure IoConnectInterrupt [2022-04-07 01:01:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReportResourceUsage [2022-04-07 01:01:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure IoInitializeRemoveLockEx [2022-04-07 01:01:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseRemoveLockEx [2022-04-07 01:01:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseRemoveLockAndWaitEx [2022-04-07 01:01:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure IoWriteErrorLogEntry [2022-04-07 01:01:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure IoWMIRegistrationControl [2022-04-07 01:01:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure IoOpenDeviceRegistryKey [2022-04-07 01:01:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure KeStallExecutionProcessor [2022-04-07 01:01:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure PoRequestPowerIrp [2022-04-07 01:01:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure PoSetPowerState [2022-04-07 01:01:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfReferenceObject [2022-04-07 01:01:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwQueryValueKey [2022-04-07 01:01:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwSetValueKey [2022-04-07 01:01:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure WmiCompleteRequest [2022-04-07 01:01:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-04-07 01:01:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchCleanup [2022-04-07 01:01:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDebugDumpPnpIrpInfo [2022-04-07 01:01:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLock [2022-04-07 01:01:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure PptReleaseRemoveLock [2022-04-07 01:01:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure PptReleaseRemoveLockAndWait [2022-04-07 01:01:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDebugDumpResourceList [2022-04-07 01:01:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDebugDumpResourceRequirementsList [2022-04-07 01:01:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLogError [2022-04-07 01:01:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-04-07 01:01:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure PptUnload [2022-04-07 01:01:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCleanRemovalRelationsList [2022-04-07 01:01:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAddPptRemovalRelation [2022-04-07 01:01:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure PptRemovePptRemovalRelation [2022-04-07 01:01:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDumpRemovalRelationsList [2022-04-07 01:01:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDumpPptRemovalRelationsStruct [2022-04-07 01:01:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchInternalDeviceControl [2022-04-07 01:01:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure PptIsNecR98Machine [2022-04-07 01:01:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchCreate [2022-04-07 01:01:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchClose [2022-04-07 01:01:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure PptInitiate1284_3 [2022-04-07 01:01:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectDevice [2022-04-07 01:01:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectDevice [2022-04-07 01:01:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure Ppt1284_3AssignAddress [2022-04-07 01:01:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCheckIfNon1284_3Present [2022-04-07 01:01:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCheckIfStl1284_3 [2022-04-07 01:01:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCheckIfStlProductId [2022-04-07 01:01:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSend1284_3Command [2022-04-07 01:01:29,786 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectChipFilter [2022-04-07 01:01:29,786 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectPortType [2022-04-07 01:01:29,786 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectPortCapabilities [2022-04-07 01:01:29,786 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEcpPort [2022-04-07 01:01:29,786 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEppPortIfDot3DevicePresent [2022-04-07 01:01:29,786 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEppPortIfUserRequested [2022-04-07 01:01:29,786 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEppPort [2022-04-07 01:01:29,786 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectBytePort [2022-04-07 01:01:29,787 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoDepth [2022-04-07 01:01:29,787 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoWidth [2022-04-07 01:01:29,787 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetChipMode [2022-04-07 01:01:29,787 INFO L138 BoogieDeclarations]: Found implementation of procedure PptClearChipMode [2022-04-07 01:01:29,787 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrSetMode [2022-04-07 01:01:29,787 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetByteMode [2022-04-07 01:01:29,787 INFO L138 BoogieDeclarations]: Found implementation of procedure PptClearByteMode [2022-04-07 01:01:29,787 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCheckByteMode [2022-04-07 01:01:29,787 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrClearMode [2022-04-07 01:01:29,787 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFindNatChip [2022-04-07 01:01:29,788 INFO L138 BoogieDeclarations]: Found implementation of procedure PptBuildResourceList [2022-04-07 01:01:29,788 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpBuildRemovalRelations [2022-04-07 01:01:29,788 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStartScanPciCardCmResourceList [2022-04-07 01:01:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure PptIsPci [2022-04-07 01:01:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCompleteRequest [2022-04-07 01:01:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpInitDispatchFunctionTable [2022-04-07 01:01:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpAddDevice [2022-04-07 01:01:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchPnp [2022-04-07 01:01:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStartDevice [2022-04-07 01:01:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStartScanCmResourceList [2022-04-07 01:01:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStartValidateResources [2022-04-07 01:01:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterResourceRequirements [2022-04-07 01:01:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterExistsNonIrqResourceList [2022-04-07 01:01:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterRemoveIrqResourceLists [2022-04-07 01:01:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterGetEndOfResourceRequirementsList [2022-04-07 01:01:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterNukeIrqResourceDescriptorsFromAllLists [2022-04-07 01:01:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterNukeIrqResourceDescriptors [2022-04-07 01:01:29,790 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpQueryDeviceRelations [2022-04-07 01:01:29,790 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpQueryStopDevice [2022-04-07 01:01:29,790 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpCancelStopDevice [2022-04-07 01:01:29,790 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStopDevice [2022-04-07 01:01:29,790 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpQueryRemoveDevice [2022-04-07 01:01:29,790 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpCancelRemoveDevice [2022-04-07 01:01:29,790 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpRemoveDevice [2022-04-07 01:01:29,790 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpSurpriseRemoval [2022-04-07 01:01:29,790 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpListContainsIrqResourceDescriptor [2022-04-07 01:01:29,790 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpBounceAndCatchPnpIrp [2022-04-07 01:01:29,791 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2022-04-07 01:01:29,791 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpUnhandledIrp [2022-04-07 01:01:29,791 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPowerComplete [2022-04-07 01:01:29,791 INFO L138 BoogieDeclarations]: Found implementation of procedure InitNEC_98 [2022-04-07 01:01:29,791 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchPower [2022-04-07 01:01:29,791 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockDiskModeByte [2022-04-07 01:01:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockPrtModeByte [2022-04-07 01:01:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipSetDiskMode [2022-04-07 01:01:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipCheckDevice [2022-04-07 01:01:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectLegacyZip [2022-04-07 01:01:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectLegacyZip [2022-04-07 01:01:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure PptRegInitDriverSettings [2022-04-07 01:01:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure PptRegGetDeviceParameterDword [2022-04-07 01:01:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure PptRegSetDeviceParameterDword [2022-04-07 01:01:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFailRequest [2022-04-07 01:01:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLockOrFailIrp [2022-04-07 01:01:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchPreProcessIrp [2022-04-07 01:01:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchPostProcessIrp [2022-04-07 01:01:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchCompletionRoutine [2022-04-07 01:01:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure PptGetPortNameFromPhysicalDeviceObject [2022-04-07 01:01:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure PptConnectInterrupt [2022-04-07 01:01:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDisconnectInterrupt [2022-04-07 01:01:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedIncrement [2022-04-07 01:01:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedDecrement [2022-04-07 01:01:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedRead [2022-04-07 01:01:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedQueue [2022-04-07 01:01:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedDisconnect [2022-04-07 01:01:29,794 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCancelRoutine [2022-04-07 01:01:29,795 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFreePortDpc [2022-04-07 01:01:29,795 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTryAllocatePortAtInterruptLevel [2022-04-07 01:01:29,797 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFreePortFromInterruptLevel [2022-04-07 01:01:29,797 INFO L138 BoogieDeclarations]: Found implementation of procedure PptInterruptService [2022-04-07 01:01:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTryAllocatePort [2022-04-07 01:01:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTraversePortCheckList [2022-04-07 01:01:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFreePort [2022-04-07 01:01:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure PptQueryNumWaiters [2022-04-07 01:01:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetCancelRoutine [2022-04-07 01:01:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTickCount [2022-04-07 01:01:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure CheckPort [2022-04-07 01:01:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure PptBuildParallelPortDeviceName [2022-04-07 01:01:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure PptInitializeDeviceExtension [2022-04-07 01:01:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure PptGetPortNumberFromLptName [2022-04-07 01:01:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure PptBuildDeviceObject [2022-04-07 01:01:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure PptWmiInitWmi [2022-04-07 01:01:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchSystemControl [2022-04-07 01:01:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure PptWmiQueryWmiRegInfo [2022-04-07 01:01:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure PptWmiQueryWmiDataBlock [2022-04-07 01:01:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-04-07 01:01:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-04-07 01:01:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-07 01:01:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-04-07 01:01:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-04-07 01:01:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-04-07 01:01:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-04-07 01:01:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-04-07 01:01:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-04-07 01:01:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-04-07 01:01:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-04-07 01:01:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-04-07 01:01:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-04-07 01:01:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-04-07 01:01:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-04-07 01:01:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-04-07 01:01:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-04-07 01:01:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-04-07 01:01:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-04-07 01:01:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-04-07 01:01:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-04-07 01:01:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-04-07 01:01:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-04-07 01:01:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-04-07 01:01:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-04-07 01:01:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-04-07 01:01:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-04-07 01:01:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-04-07 01:01:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-04-07 01:01:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-04-07 01:01:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-04-07 01:01:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-04-07 01:01:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-04-07 01:01:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-04-07 01:01:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-04-07 01:01:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-04-07 01:01:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-04-07 01:01:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-04-07 01:01:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-04-07 01:01:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-04-07 01:01:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-04-07 01:01:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-04-07 01:01:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-04-07 01:01:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-04-07 01:01:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-04-07 01:01:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-04-07 01:01:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-04-07 01:01:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-04-07 01:01:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-04-07 01:01:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-04-07 01:01:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-04-07 01:01:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-04-07 01:01:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-04-07 01:01:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-04-07 01:01:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-04-07 01:01:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-04-07 01:01:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-04-07 01:01:29,807 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-04-07 01:01:29,807 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-04-07 01:01:29,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-04-07 01:01:29,807 INFO L138 BoogieDeclarations]: Found implementation of procedure WmiSystemControl [2022-04-07 01:01:29,807 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAcquireRemoveLockEx [2022-04-07 01:01:29,807 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-04-07 01:01:29,807 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-04-07 01:01:29,807 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-04-07 01:01:29,807 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-07 01:01:29,807 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-07 01:01:29,807 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-07 01:01:29,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-07 01:01:29,807 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-07 01:01:29,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-04-07 01:01:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-07 01:01:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-07 01:01:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-07 01:01:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-04-07 01:01:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-04-07 01:01:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-04-07 01:01:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-04-07 01:01:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-04-07 01:01:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-04-07 01:01:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-04-07 01:01:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-04-07 01:01:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure RtlIntegerToUnicodeString [2022-04-07 01:01:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-07 01:01:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure RtlUnicodeStringToInteger [2022-04-07 01:01:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-07 01:01:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-04-07 01:01:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-04-07 01:01:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-04-07 01:01:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareUnicodeString [2022-04-07 01:01:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-04-07 01:01:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAppendUnicodeStringToString [2022-04-07 01:01:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-04-07 01:01:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-04-07 01:01:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure READ_PORT_UCHAR [2022-04-07 01:01:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure WRITE_PORT_UCHAR [2022-04-07 01:01:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-04-07 01:01:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2022-04-07 01:01:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-04-07 01:01:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeDpc [2022-04-07 01:01:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure KeInsertQueueDpc [2022-04-07 01:01:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-04-07 01:01:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure KeSynchronizeExecution [2022-04-07 01:01:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-04-07 01:01:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-04-07 01:01:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-04-07 01:01:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-04-07 01:01:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-04-07 01:01:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-04-07 01:01:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-04-07 01:01:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-04-07 01:01:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTimeIncrement [2022-04-07 01:01:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-04-07 01:01:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-04-07 01:01:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-04-07 01:01:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-04-07 01:01:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-04-07 01:01:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-04-07 01:01:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-04-07 01:01:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-04-07 01:01:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-04-07 01:01:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-04-07 01:01:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-04-07 01:01:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-04-07 01:01:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-04-07 01:01:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-04-07 01:01:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-04-07 01:01:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure IoAcquireCancelSpinLock [2022-04-07 01:01:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateErrorLogEntry [2022-04-07 01:01:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-07 01:01:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-04-07 01:01:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-04-07 01:01:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-04-07 01:01:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-04-07 01:01:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-04-07 01:01:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-04-07 01:01:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure IoConnectInterrupt [2022-04-07 01:01:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2022-04-07 01:01:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-04-07 01:01:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-04-07 01:01:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-04-07 01:01:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-04-07 01:01:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-04-07 01:01:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-04-07 01:01:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-04-07 01:01:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-04-07 01:01:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-04-07 01:01:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-04-07 01:01:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-04-07 01:01:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure IoReportResourceUsage [2022-04-07 01:01:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-04-07 01:01:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure IoInitializeRemoveLockEx [2022-04-07 01:01:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure IoAcquireRemoveLockEx [2022-04-07 01:01:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseRemoveLockEx [2022-04-07 01:01:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseRemoveLockAndWaitEx [2022-04-07 01:01:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure IoWriteErrorLogEntry [2022-04-07 01:01:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure IoWMIRegistrationControl [2022-04-07 01:01:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure IoOpenDeviceRegistryKey [2022-04-07 01:01:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-04-07 01:01:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-04-07 01:01:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure KeStallExecutionProcessor [2022-04-07 01:01:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure PoRequestPowerIrp [2022-04-07 01:01:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure PoSetPowerState [2022-04-07 01:01:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-07 01:01:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-07 01:01:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-04-07 01:01:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-04-07 01:01:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-04-07 01:01:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure ObfReferenceObject [2022-04-07 01:01:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-04-07 01:01:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-04-07 01:01:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure ZwQueryValueKey [2022-04-07 01:01:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure ZwSetValueKey [2022-04-07 01:01:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure WmiCompleteRequest [2022-04-07 01:01:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure WmiSystemControl [2022-04-07 01:01:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure PptCompleteRequest [2022-04-07 01:01:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-04-07 01:01:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure PptWmiInitWmi [2022-04-07 01:01:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchSystemControl [2022-04-07 01:01:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpInitDispatchFunctionTable [2022-04-07 01:01:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpAddDevice [2022-04-07 01:01:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchPnp [2022-04-07 01:01:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure PptFailRequest [2022-04-07 01:01:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchPreProcessIrp [2022-04-07 01:01:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchPostProcessIrp [2022-04-07 01:01:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-04-07 01:01:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure PptUnload [2022-04-07 01:01:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchCompletionRoutine [2022-04-07 01:01:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure PptLogError [2022-04-07 01:01:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure PptConnectInterrupt [2022-04-07 01:01:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure PptDisconnectInterrupt [2022-04-07 01:01:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchCreate [2022-04-07 01:01:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchClose [2022-04-07 01:01:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedIncrement [2022-04-07 01:01:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedDecrement [2022-04-07 01:01:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedRead [2022-04-07 01:01:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedQueue [2022-04-07 01:01:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedDisconnect [2022-04-07 01:01:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure PptCancelRoutine [2022-04-07 01:01:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure PptFreePortDpc [2022-04-07 01:01:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure PptTryAllocatePortAtInterruptLevel [2022-04-07 01:01:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure PptFreePortFromInterruptLevel [2022-04-07 01:01:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure PptInterruptService [2022-04-07 01:01:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure PptTryAllocatePort [2022-04-07 01:01:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure PptTraversePortCheckList [2022-04-07 01:01:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure PptFreePort [2022-04-07 01:01:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure PptQueryNumWaiters [2022-04-07 01:01:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchInternalDeviceControl [2022-04-07 01:01:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchCleanup [2022-04-07 01:01:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure PptIsNecR98Machine [2022-04-07 01:01:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchPower [2022-04-07 01:01:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure PptRegInitDriverSettings [2022-04-07 01:01:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure PptGetPortNameFromPhysicalDeviceObject [2022-04-07 01:01:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetCancelRoutine [2022-04-07 01:01:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLockOrFailIrp [2022-04-07 01:01:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure PptDebugDumpPnpIrpInfo [2022-04-07 01:01:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLock [2022-04-07 01:01:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure PptReleaseRemoveLock [2022-04-07 01:01:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure PptReleaseRemoveLockAndWait [2022-04-07 01:01:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure PptDebugDumpResourceList [2022-04-07 01:01:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure PptDebugDumpResourceRequirementsList [2022-04-07 01:01:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectChipFilter [2022-04-07 01:01:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectPortType [2022-04-07 01:01:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetChipMode [2022-04-07 01:01:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure PptClearChipMode [2022-04-07 01:01:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure PptInitiate1284_3 [2022-04-07 01:01:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectDevice [2022-04-07 01:01:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectDevice [2022-04-07 01:01:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure Ppt1284_3AssignAddress [2022-04-07 01:01:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure PptSend1284_3Command [2022-04-07 01:01:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectLegacyZip [2022-04-07 01:01:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectLegacyZip [2022-04-07 01:01:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure PptDumpRemovalRelationsList [2022-04-07 01:01:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure PptRegGetDeviceParameterDword [2022-04-07 01:01:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure PptRegSetDeviceParameterDword [2022-04-07 01:01:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure PptBuildParallelPortDeviceName [2022-04-07 01:01:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure PptInitializeDeviceExtension [2022-04-07 01:01:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure PptGetPortNumberFromLptName [2022-04-07 01:01:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure PptBuildDeviceObject [2022-04-07 01:01:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEppPort [2022-04-07 01:01:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure PptCleanRemovalRelationsList [2022-04-07 01:01:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure CheckPort [2022-04-07 01:01:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-04-07 01:01:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-04-07 01:01:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-04-07 01:01:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure PptAddPptRemovalRelation [2022-04-07 01:01:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure PptRemovePptRemovalRelation [2022-04-07 01:01:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure PptDumpPptRemovalRelationsStruct [2022-04-07 01:01:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure PptCheckIfStl1284_3 [2022-04-07 01:01:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure PptCheckIfNon1284_3Present [2022-04-07 01:01:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure PptCheckIfStlProductId [2022-04-07 01:01:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectPortCapabilities [2022-04-07 01:01:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEcpPort [2022-04-07 01:01:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEppPortIfDot3DevicePresent [2022-04-07 01:01:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEppPortIfUserRequested [2022-04-07 01:01:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectBytePort [2022-04-07 01:01:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoDepth [2022-04-07 01:01:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoWidth [2022-04-07 01:01:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrSetMode [2022-04-07 01:01:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrClearMode [2022-04-07 01:01:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure PptFindNatChip [2022-04-07 01:01:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure PptBuildResourceList [2022-04-07 01:01:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetByteMode [2022-04-07 01:01:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure PptClearByteMode [2022-04-07 01:01:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure PptCheckByteMode [2022-04-07 01:01:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2022-04-07 01:01:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterResourceRequirements [2022-04-07 01:01:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpQueryDeviceRelations [2022-04-07 01:01:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpQueryStopDevice [2022-04-07 01:01:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpCancelStopDevice [2022-04-07 01:01:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStopDevice [2022-04-07 01:01:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpQueryRemoveDevice [2022-04-07 01:01:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpCancelRemoveDevice [2022-04-07 01:01:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpRemoveDevice [2022-04-07 01:01:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpSurpriseRemoval [2022-04-07 01:01:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpUnhandledIrp [2022-04-07 01:01:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStartDevice [2022-04-07 01:01:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStartValidateResources [2022-04-07 01:01:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStartScanCmResourceList [2022-04-07 01:01:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2022-04-07 01:01:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterNukeIrqResourceDescriptors [2022-04-07 01:01:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterNukeIrqResourceDescriptorsFromAllLists [2022-04-07 01:01:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterExistsNonIrqResourceList [2022-04-07 01:01:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterGetEndOfResourceRequirementsList [2022-04-07 01:01:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpListContainsIrqResourceDescriptor [2022-04-07 01:01:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterRemoveIrqResourceLists [2022-04-07 01:01:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpBounceAndCatchPnpIrp [2022-04-07 01:01:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpBuildRemovalRelations [2022-04-07 01:01:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStartScanPciCardCmResourceList [2022-04-07 01:01:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure PptIsPci [2022-04-07 01:01:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure PptPowerComplete [2022-04-07 01:01:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure InitNEC_98 [2022-04-07 01:01:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockDiskModeByte [2022-04-07 01:01:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockPrtModeByte [2022-04-07 01:01:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipSetDiskMode [2022-04-07 01:01:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipCheckDevice [2022-04-07 01:01:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~TO~VOID [2022-04-07 01:01:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTickCount [2022-04-07 01:01:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure PptWmiQueryWmiRegInfo [2022-04-07 01:01:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure PptWmiQueryWmiDataBlock [2022-04-07 01:01:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-04-07 01:01:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-04-07 01:01:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-07 01:01:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-04-07 01:01:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-04-07 01:01:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-07 01:01:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-07 01:01:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-04-07 01:01:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-07 01:01:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-04-07 01:01:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-04-07 01:01:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-04-07 01:01:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-04-07 01:01:30,870 INFO L234 CfgBuilder]: Building ICFG [2022-04-07 01:01:30,878 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-07 01:01:30,906 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:30,965 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 01:01:30,965 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 01:01:31,331 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:31,472 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !false; [2022-04-07 01:01:31,472 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume false; [2022-04-07 01:01:31,492 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:31,512 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-04-07 01:01:31,512 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-04-07 01:01:31,513 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:31,519 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 01:01:31,519 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 01:01:31,597 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:31,621 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-04-07 01:01:31,621 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-04-07 01:01:31,621 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:31,656 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 01:01:31,657 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 01:01:31,804 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:31,817 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 01:01:31,817 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 01:01:31,874 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:31,891 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-04-07 01:01:31,891 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-04-07 01:01:31,928 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:31,952 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2022-04-07 01:01:31,952 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2022-04-07 01:01:31,952 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:31,961 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-04-07 01:01:31,962 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-04-07 01:01:31,973 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:31,977 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 01:01:31,977 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 01:01:32,111 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:35,542 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume !false; [2022-04-07 01:01:35,542 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume false; [2022-04-07 01:01:37,652 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:37,656 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 01:01:37,656 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 01:01:37,711 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:37,711 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:38,042 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-04-07 01:01:38,042 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2022-04-07 01:01:38,042 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-04-07 01:01:38,042 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2022-04-07 01:01:38,204 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:38,208 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 01:01:38,208 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 01:01:38,294 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:38,299 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 01:01:38,299 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 01:01:38,477 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:38,480 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 01:01:38,480 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 01:01:38,480 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:38,484 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 01:01:38,484 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 01:01:38,496 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:38,500 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 01:01:38,500 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 01:01:38,500 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:38,503 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 01:01:38,503 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 01:01:38,503 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:38,516 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 01:01:38,516 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 01:01:38,649 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:38,653 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 01:01:38,653 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 01:01:38,659 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:38,662 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 01:01:38,662 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 01:01:38,714 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:38,718 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 01:01:38,718 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 01:01:38,727 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:38,730 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 01:01:38,730 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 01:01:39,388 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:39,391 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 01:01:39,391 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 01:01:39,398 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:39,422 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-04-07 01:01:39,423 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-04-07 01:01:39,427 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:39,672 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume !false; [2022-04-07 01:01:39,672 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume false; [2022-04-07 01:01:39,842 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:39,845 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 01:01:39,845 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 01:01:39,952 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:39,976 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-04-07 01:01:39,976 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-04-07 01:01:40,013 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:42,586 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2022-04-07 01:01:42,587 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2022-04-07 01:01:42,619 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:42,639 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-04-07 01:01:42,640 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-04-07 01:01:42,640 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:42,656 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-04-07 01:01:42,656 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-04-07 01:01:42,690 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:42,698 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-04-07 01:01:42,698 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-04-07 01:01:42,938 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:42,942 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 01:01:42,942 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 01:01:43,162 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 01:01:43,177 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-04-07 01:01:43,177 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-04-07 01:01:43,269 INFO L275 CfgBuilder]: Performing block encoding [2022-04-07 01:01:43,293 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-07 01:01:43,294 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2022-04-07 01:01:43,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 01:01:43 BoogieIcfgContainer [2022-04-07 01:01:43,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-07 01:01:43,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-07 01:01:43,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-07 01:01:43,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-07 01:01:43,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.04 01:01:27" (1/3) ... [2022-04-07 01:01:43,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a40dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 01:01:43, skipping insertion in model container [2022-04-07 01:01:43,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 01:01:29" (2/3) ... [2022-04-07 01:01:43,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a40dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 01:01:43, skipping insertion in model container [2022-04-07 01:01:43,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 01:01:43" (3/3) ... [2022-04-07 01:01:43,306 INFO L111 eAbstractionObserver]: Analyzing ICFG parport.i.cil-2.c [2022-04-07 01:01:43,309 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-07 01:01:43,309 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-07 01:01:43,348 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-07 01:01:43,357 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 [2022-04-07 01:01:43,358 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-07 01:01:43,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 2250 states, 1521 states have (on average 1.4372123602892835) internal successors, (2186), 1577 states have internal predecessors, (2186), 562 states have call successors, (562), 151 states have call predecessors, (562), 151 states have return successors, (562), 547 states have call predecessors, (562), 562 states have call successors, (562) [2022-04-07 01:01:43,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-07 01:01:43,407 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:01:43,408 INFO L499 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] [2022-04-07 01:01:43,408 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:01:43,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:01:43,412 INFO L85 PathProgramCache]: Analyzing trace with hash -2073400986, now seen corresponding path program 1 times [2022-04-07 01:01:43,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:43,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [231730061] [2022-04-07 01:01:43,424 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 01:01:43,425 INFO L85 PathProgramCache]: Analyzing trace with hash -2073400986, now seen corresponding path program 2 times [2022-04-07 01:01:43,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:01:43,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836534480] [2022-04-07 01:01:43,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:01:43,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:01:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:44,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:01:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:44,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-07 01:01:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:01:44,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:01:44,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:01:44,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836534480] [2022-04-07 01:01:44,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836534480] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:44,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:44,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 01:01:44,239 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:01:44,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [231730061] [2022-04-07 01:01:44,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [231730061] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:01:44,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:01:44,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 01:01:44,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859166533] [2022-04-07 01:01:44,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:01:44,243 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-07 01:01:44,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:01:44,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-07 01:01:44,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-07 01:01:44,264 INFO L87 Difference]: Start difference. First operand has 2250 states, 1521 states have (on average 1.4372123602892835) internal successors, (2186), 1577 states have internal predecessors, (2186), 562 states have call successors, (562), 151 states have call predecessors, (562), 151 states have return successors, (562), 547 states have call predecessors, (562), 562 states have call successors, (562) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 01:01:49,485 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 [] [2022-04-07 01:01:52,947 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:01:54,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:02:05,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:05,357 INFO L93 Difference]: Finished difference Result 4216 states and 6551 transitions. [2022-04-07 01:02:05,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-07 01:02:05,359 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-04-07 01:02:05,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:05,414 INFO L225 Difference]: With dead ends: 4216 [2022-04-07 01:02:05,414 INFO L226 Difference]: Without dead ends: 2226 [2022-04-07 01:02:05,427 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-07 01:02:05,449 INFO L913 BasicCegarLoop]: 2421 mSDtfsCounter, 3234 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 3764 mSolverCounterSat, 1561 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3637 SdHoareTripleChecker+Valid, 2782 SdHoareTripleChecker+Invalid, 5327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1561 IncrementalHoareTripleChecker+Valid, 3764 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:05,450 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3637 Valid, 2782 Invalid, 5327 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1561 Valid, 3764 Invalid, 2 Unknown, 0 Unchecked, 20.2s Time] [2022-04-07 01:02:05,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2022-04-07 01:02:06,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 1985. [2022-04-07 01:02:06,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1985 states, 1335 states have (on average 1.3745318352059925) internal successors, (1835), 1385 states have internal predecessors, (1835), 517 states have call successors, (517), 134 states have call predecessors, (517), 132 states have return successors, (497), 488 states have call predecessors, (497), 497 states have call successors, (497) [2022-04-07 01:02:06,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2849 transitions. [2022-04-07 01:02:06,066 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2849 transitions. Word has length 22 [2022-04-07 01:02:06,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:06,067 INFO L478 AbstractCegarLoop]: Abstraction has 1985 states and 2849 transitions. [2022-04-07 01:02:06,067 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 01:02:06,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2849 transitions. [2022-04-07 01:02:06,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-07 01:02:06,068 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:06,068 INFO L499 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] [2022-04-07 01:02:06,069 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-07 01:02:06,069 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:06,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:06,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1828450504, now seen corresponding path program 1 times [2022-04-07 01:02:06,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:06,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1694437650] [2022-04-07 01:02:06,083 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:06,084 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:06,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1828450504, now seen corresponding path program 2 times [2022-04-07 01:02:06,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:06,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922591317] [2022-04-07 01:02:06,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:06,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:06,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:06,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:06,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:02:06,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:06,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922591317] [2022-04-07 01:02:06,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922591317] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:02:06,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173580260] [2022-04-07 01:02:06,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:02:06,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:06,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:02:06,447 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) [2022-04-07 01:02:06,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-07 01:02:07,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:02:07,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:02:07,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-07 01:02:07,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:02:07,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:02:07,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:02:07,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173580260] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:07,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:02:07,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-04-07 01:02:07,268 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:02:07,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1694437650] [2022-04-07 01:02:07,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1694437650] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:07,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:07,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 01:02:07,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213355498] [2022-04-07 01:02:07,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:02:07,269 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 01:02:07,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:07,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 01:02:07,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-07 01:02:07,270 INFO L87 Difference]: Start difference. First operand 1985 states and 2849 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-07 01:02:08,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:08,137 INFO L93 Difference]: Finished difference Result 2005 states and 2875 transitions. [2022-04-07 01:02:08,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 01:02:08,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-04-07 01:02:08,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:08,147 INFO L225 Difference]: With dead ends: 2005 [2022-04-07 01:02:08,147 INFO L226 Difference]: Without dead ends: 1985 [2022-04-07 01:02:08,148 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-07 01:02:08,152 INFO L913 BasicCegarLoop]: 2846 mSDtfsCounter, 7 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5633 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:08,152 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 5633 Invalid, 56 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-07 01:02:08,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2022-04-07 01:02:08,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1985. [2022-04-07 01:02:08,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1985 states, 1335 states have (on average 1.3737827715355806) internal successors, (1834), 1385 states have internal predecessors, (1834), 517 states have call successors, (517), 134 states have call predecessors, (517), 132 states have return successors, (497), 488 states have call predecessors, (497), 497 states have call successors, (497) [2022-04-07 01:02:08,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2848 transitions. [2022-04-07 01:02:08,463 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2848 transitions. Word has length 24 [2022-04-07 01:02:08,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:08,463 INFO L478 AbstractCegarLoop]: Abstraction has 1985 states and 2848 transitions. [2022-04-07 01:02:08,463 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-07 01:02:08,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2848 transitions. [2022-04-07 01:02:08,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-07 01:02:08,464 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:08,464 INFO L499 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] [2022-04-07 01:02:08,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-07 01:02:08,680 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:08,680 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:08,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:08,681 INFO L85 PathProgramCache]: Analyzing trace with hash -975584275, now seen corresponding path program 1 times [2022-04-07 01:02:08,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:08,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1972375933] [2022-04-07 01:02:08,684 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:08,684 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:08,684 INFO L85 PathProgramCache]: Analyzing trace with hash -975584275, now seen corresponding path program 2 times [2022-04-07 01:02:08,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:08,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557781750] [2022-04-07 01:02:08,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:08,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:09,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:09,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:09,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:02:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:09,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:02:09,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:09,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557781750] [2022-04-07 01:02:09,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557781750] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:02:09,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587523480] [2022-04-07 01:02:09,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:02:09,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:09,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:02:09,136 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) [2022-04-07 01:02:09,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-07 01:02:09,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:02:09,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:02:09,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 15 conjunts are in the unsatisfiable core [2022-04-07 01:02:09,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:02:10,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:02:10,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:02:10,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587523480] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:10,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:02:10,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-04-07 01:02:10,045 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:02:10,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1972375933] [2022-04-07 01:02:10,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1972375933] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:10,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:10,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 01:02:10,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453074984] [2022-04-07 01:02:10,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:02:10,049 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 01:02:10,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:10,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 01:02:10,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-07 01:02:10,049 INFO L87 Difference]: Start difference. First operand 1985 states and 2848 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-07 01:02:11,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:11,389 INFO L93 Difference]: Finished difference Result 5045 states and 7333 transitions. [2022-04-07 01:02:11,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 01:02:11,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2022-04-07 01:02:11,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:11,457 INFO L225 Difference]: With dead ends: 5045 [2022-04-07 01:02:11,457 INFO L226 Difference]: Without dead ends: 3732 [2022-04-07 01:02:11,481 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-07 01:02:11,486 INFO L913 BasicCegarLoop]: 3526 mSDtfsCounter, 2726 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2726 SdHoareTripleChecker+Valid, 6082 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:11,487 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2726 Valid, 6082 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-07 01:02:11,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3732 states. [2022-04-07 01:02:12,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3732 to 3711. [2022-04-07 01:02:12,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3711 states, 2506 states have (on average 1.3699122106943336) internal successors, (3433), 2576 states have internal predecessors, (3433), 957 states have call successors, (957), 248 states have call predecessors, (957), 247 states have return successors, (996), 924 states have call predecessors, (996), 940 states have call successors, (996) [2022-04-07 01:02:12,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3711 states to 3711 states and 5386 transitions. [2022-04-07 01:02:12,294 INFO L78 Accepts]: Start accepts. Automaton has 3711 states and 5386 transitions. Word has length 33 [2022-04-07 01:02:12,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:12,294 INFO L478 AbstractCegarLoop]: Abstraction has 3711 states and 5386 transitions. [2022-04-07 01:02:12,294 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-07 01:02:12,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3711 states and 5386 transitions. [2022-04-07 01:02:12,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-04-07 01:02:12,302 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:12,302 INFO L499 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] [2022-04-07 01:02:12,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-07 01:02:12,515 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,SelfDestructingSolverStorable2 [2022-04-07 01:02:12,516 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:12,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:12,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1905624997, now seen corresponding path program 1 times [2022-04-07 01:02:12,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:12,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1390848688] [2022-04-07 01:02:12,522 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:12,523 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:12,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1905624997, now seen corresponding path program 2 times [2022-04-07 01:02:12,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:12,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31153719] [2022-04-07 01:02:12,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:12,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:12,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:12,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:12,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:02:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:13,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:02:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:13,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:02:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:13,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:13,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:02:13,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:13,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31153719] [2022-04-07 01:02:13,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31153719] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:02:13,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377239488] [2022-04-07 01:02:13,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:02:13,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:13,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:02:13,036 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) [2022-04-07 01:02:13,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-07 01:02:13,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:02:13,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:02:13,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 1479 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-07 01:02:13,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:02:13,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:02:13,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:02:13,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377239488] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:13,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:02:13,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-04-07 01:02:13,868 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:02:13,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1390848688] [2022-04-07 01:02:13,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1390848688] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:13,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:13,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 01:02:13,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860626732] [2022-04-07 01:02:13,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:02:13,869 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 01:02:13,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:13,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 01:02:13,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-07 01:02:13,870 INFO L87 Difference]: Start difference. First operand 3711 states and 5386 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:02:14,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:14,674 INFO L93 Difference]: Finished difference Result 3829 states and 5529 transitions. [2022-04-07 01:02:14,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 01:02:14,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 49 [2022-04-07 01:02:14,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:14,691 INFO L225 Difference]: With dead ends: 3829 [2022-04-07 01:02:14,691 INFO L226 Difference]: Without dead ends: 3810 [2022-04-07 01:02:14,693 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-07 01:02:14,695 INFO L913 BasicCegarLoop]: 2842 mSDtfsCounter, 2820 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2820 SdHoareTripleChecker+Valid, 2912 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:14,696 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2820 Valid, 2912 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 01:02:14,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3810 states. [2022-04-07 01:02:15,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3810 to 3804. [2022-04-07 01:02:15,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3804 states, 2571 states have (on average 1.3667833527810191) internal successors, (3514), 2646 states have internal predecessors, (3514), 971 states have call successors, (971), 262 states have call predecessors, (971), 261 states have return successors, (1012), 936 states have call predecessors, (1012), 954 states have call successors, (1012) [2022-04-07 01:02:15,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 5497 transitions. [2022-04-07 01:02:15,475 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 5497 transitions. Word has length 49 [2022-04-07 01:02:15,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:15,476 INFO L478 AbstractCegarLoop]: Abstraction has 3804 states and 5497 transitions. [2022-04-07 01:02:15,476 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:02:15,476 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 5497 transitions. [2022-04-07 01:02:15,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-04-07 01:02:15,478 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:15,478 INFO L499 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] [2022-04-07 01:02:15,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-07 01:02:15,699 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:15,699 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:15,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:15,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1919969906, now seen corresponding path program 1 times [2022-04-07 01:02:15,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:15,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1917246687] [2022-04-07 01:02:15,705 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:15,705 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:15,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1919969906, now seen corresponding path program 2 times [2022-04-07 01:02:15,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:15,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564385688] [2022-04-07 01:02:15,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:15,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:16,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:16,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:16,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:02:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:16,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:02:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:16,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:02:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:16,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:16,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:02:16,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:16,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564385688] [2022-04-07 01:02:16,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564385688] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:02:16,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220727767] [2022-04-07 01:02:16,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:02:16,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:16,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:02:16,134 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) [2022-04-07 01:02:16,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-07 01:02:16,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:02:16,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:02:16,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-07 01:02:16,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:02:17,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:02:17,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:02:17,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220727767] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:17,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:02:17,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-04-07 01:02:17,011 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:02:17,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1917246687] [2022-04-07 01:02:17,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1917246687] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:17,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:17,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 01:02:17,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631293830] [2022-04-07 01:02:17,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:02:17,012 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 01:02:17,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:17,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 01:02:17,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-07 01:02:17,012 INFO L87 Difference]: Start difference. First operand 3804 states and 5497 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:02:18,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:18,336 INFO L93 Difference]: Finished difference Result 4627 states and 6683 transitions. [2022-04-07 01:02:18,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 01:02:18,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 49 [2022-04-07 01:02:18,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:18,355 INFO L225 Difference]: With dead ends: 4627 [2022-04-07 01:02:18,355 INFO L226 Difference]: Without dead ends: 4622 [2022-04-07 01:02:18,357 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-07 01:02:18,357 INFO L913 BasicCegarLoop]: 4117 mSDtfsCounter, 1721 mSDsluCounter, 2715 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 6832 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:18,358 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1721 Valid, 6832 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-07 01:02:18,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4622 states. [2022-04-07 01:02:19,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4622 to 4578. [2022-04-07 01:02:19,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 3047 states have (on average 1.3603544469970463) internal successors, (4145), 3130 states have internal predecessors, (4145), 1215 states have call successors, (1215), 313 states have call predecessors, (1215), 315 states have return successors, (1262), 1180 states have call predecessors, (1262), 1198 states have call successors, (1262) [2022-04-07 01:02:19,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 6622 transitions. [2022-04-07 01:02:19,249 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 6622 transitions. Word has length 49 [2022-04-07 01:02:19,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:19,249 INFO L478 AbstractCegarLoop]: Abstraction has 4578 states and 6622 transitions. [2022-04-07 01:02:19,249 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:02:19,249 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 6622 transitions. [2022-04-07 01:02:19,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-07 01:02:19,250 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:19,251 INFO L499 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] [2022-04-07 01:02:19,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-04-07 01:02:19,471 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:19,472 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:19,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:19,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1061683448, now seen corresponding path program 1 times [2022-04-07 01:02:19,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:19,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [837158279] [2022-04-07 01:02:19,489 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:19,489 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:19,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1061683448, now seen corresponding path program 2 times [2022-04-07 01:02:19,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:19,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813682923] [2022-04-07 01:02:19,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:19,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:19,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:19,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:19,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:02:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:19,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-07 01:02:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:20,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:02:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:20,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:20,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:02:20,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:20,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813682923] [2022-04-07 01:02:20,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813682923] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:02:20,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616094772] [2022-04-07 01:02:20,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:02:20,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:20,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:02:20,032 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) [2022-04-07 01:02:20,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-07 01:02:20,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:02:20,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:02:20,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-07 01:02:20,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:02:21,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:02:21,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:02:21,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616094772] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:21,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:02:21,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-04-07 01:02:21,008 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:02:21,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [837158279] [2022-04-07 01:02:21,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [837158279] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:21,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:21,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 01:02:21,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524131961] [2022-04-07 01:02:21,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:02:21,009 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-07 01:02:21,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:21,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-07 01:02:21,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-04-07 01:02:21,011 INFO L87 Difference]: Start difference. First operand 4578 states and 6622 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:02:22,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:22,066 INFO L93 Difference]: Finished difference Result 4593 states and 6640 transitions. [2022-04-07 01:02:22,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-07 01:02:22,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 50 [2022-04-07 01:02:22,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:22,107 INFO L225 Difference]: With dead ends: 4593 [2022-04-07 01:02:22,107 INFO L226 Difference]: Without dead ends: 4552 [2022-04-07 01:02:22,110 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-04-07 01:02:22,116 INFO L913 BasicCegarLoop]: 2840 mSDtfsCounter, 5 mSDsluCounter, 8500 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 11340 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:22,117 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 11340 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 01:02:22,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4552 states. [2022-04-07 01:02:22,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4552 to 4552. [2022-04-07 01:02:22,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4552 states, 3031 states have (on average 1.3606070603761136) internal successors, (4124), 3114 states have internal predecessors, (4124), 1207 states have call successors, (1207), 311 states have call predecessors, (1207), 313 states have return successors, (1254), 1172 states have call predecessors, (1254), 1190 states have call successors, (1254) [2022-04-07 01:02:22,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4552 states to 4552 states and 6585 transitions. [2022-04-07 01:02:22,982 INFO L78 Accepts]: Start accepts. Automaton has 4552 states and 6585 transitions. Word has length 50 [2022-04-07 01:02:22,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:22,982 INFO L478 AbstractCegarLoop]: Abstraction has 4552 states and 6585 transitions. [2022-04-07 01:02:22,983 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:02:22,983 INFO L276 IsEmpty]: Start isEmpty. Operand 4552 states and 6585 transitions. [2022-04-07 01:02:22,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-07 01:02:22,984 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:22,984 INFO L499 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] [2022-04-07 01:02:23,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-07 01:02:23,201 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:23,201 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:23,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:23,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1755528464, now seen corresponding path program 1 times [2022-04-07 01:02:23,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:23,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [492895977] [2022-04-07 01:02:23,219 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:23,219 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:23,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1755528464, now seen corresponding path program 2 times [2022-04-07 01:02:23,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:23,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173409756] [2022-04-07 01:02:23,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:23,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:23,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:23,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:23,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:02:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:23,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-07 01:02:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:23,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:02:23,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:23,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173409756] [2022-04-07 01:02:23,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173409756] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:02:23,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224822034] [2022-04-07 01:02:23,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:02:23,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:23,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:02:23,811 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) [2022-04-07 01:02:23,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-07 01:02:24,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:02:24,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:02:24,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 1578 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-07 01:02:24,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:02:24,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:02:24,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:02:24,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224822034] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:24,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:02:24,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-04-07 01:02:24,759 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:02:24,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [492895977] [2022-04-07 01:02:24,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [492895977] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:24,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:24,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 01:02:24,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205437090] [2022-04-07 01:02:24,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:02:24,759 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 01:02:24,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:24,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 01:02:24,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-07 01:02:24,760 INFO L87 Difference]: Start difference. First operand 4552 states and 6585 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-07 01:02:25,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:25,578 INFO L93 Difference]: Finished difference Result 7500 states and 10838 transitions. [2022-04-07 01:02:25,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 01:02:25,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2022-04-07 01:02:25,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:25,609 INFO L225 Difference]: With dead ends: 7500 [2022-04-07 01:02:25,609 INFO L226 Difference]: Without dead ends: 4606 [2022-04-07 01:02:25,621 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-07 01:02:25,621 INFO L913 BasicCegarLoop]: 2819 mSDtfsCounter, 2710 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2710 SdHoareTripleChecker+Valid, 2964 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:25,622 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2710 Valid, 2964 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 01:02:25,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4606 states. [2022-04-07 01:02:26,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4606 to 4521. [2022-04-07 01:02:26,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4521 states, 3006 states have (on average 1.3576180971390552) internal successors, (4081), 3088 states have internal predecessors, (4081), 1201 states have call successors, (1201), 311 states have call predecessors, (1201), 313 states have return successors, (1249), 1167 states have call predecessors, (1249), 1184 states have call successors, (1249) [2022-04-07 01:02:26,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4521 states to 4521 states and 6531 transitions. [2022-04-07 01:02:26,501 INFO L78 Accepts]: Start accepts. Automaton has 4521 states and 6531 transitions. Word has length 51 [2022-04-07 01:02:26,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:26,501 INFO L478 AbstractCegarLoop]: Abstraction has 4521 states and 6531 transitions. [2022-04-07 01:02:26,501 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-07 01:02:26,501 INFO L276 IsEmpty]: Start isEmpty. Operand 4521 states and 6531 transitions. [2022-04-07 01:02:26,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-04-07 01:02:26,503 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:26,504 INFO L499 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] [2022-04-07 01:02:26,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-07 01:02:26,724 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:26,725 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:26,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:26,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1561391810, now seen corresponding path program 1 times [2022-04-07 01:02:26,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:26,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1591550165] [2022-04-07 01:02:26,732 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:26,733 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:26,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1561391810, now seen corresponding path program 2 times [2022-04-07 01:02:26,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:26,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971952474] [2022-04-07 01:02:26,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:26,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:26,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:27,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:27,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:02:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:27,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-07 01:02:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:27,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:02:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:27,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:27,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:02:27,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:27,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971952474] [2022-04-07 01:02:27,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971952474] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:02:27,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8969645] [2022-04-07 01:02:27,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:02:27,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:27,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:02:27,158 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) [2022-04-07 01:02:27,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-07 01:02:28,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:02:28,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:02:28,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-07 01:02:28,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:02:28,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:02:28,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:02:28,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8969645] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:28,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:02:28,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-04-07 01:02:28,215 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:02:28,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1591550165] [2022-04-07 01:02:28,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1591550165] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:28,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:28,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 01:02:28,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993512825] [2022-04-07 01:02:28,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:02:28,216 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-07 01:02:28,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:28,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-07 01:02:28,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-04-07 01:02:28,216 INFO L87 Difference]: Start difference. First operand 4521 states and 6531 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:02:29,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:29,202 INFO L93 Difference]: Finished difference Result 4536 states and 6549 transitions. [2022-04-07 01:02:29,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-07 01:02:29,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 57 [2022-04-07 01:02:29,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:29,221 INFO L225 Difference]: With dead ends: 4536 [2022-04-07 01:02:29,221 INFO L226 Difference]: Without dead ends: 4518 [2022-04-07 01:02:29,223 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-04-07 01:02:29,224 INFO L913 BasicCegarLoop]: 2811 mSDtfsCounter, 5 mSDsluCounter, 8402 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 11213 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:29,225 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 11213 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 01:02:29,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4518 states. [2022-04-07 01:02:29,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4518 to 4518. [2022-04-07 01:02:29,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4518 states, 3004 states have (on average 1.3575233022636484) internal successors, (4078), 3086 states have internal predecessors, (4078), 1200 states have call successors, (1200), 311 states have call predecessors, (1200), 313 states have return successors, (1248), 1166 states have call predecessors, (1248), 1183 states have call successors, (1248) [2022-04-07 01:02:30,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4518 states to 4518 states and 6526 transitions. [2022-04-07 01:02:30,016 INFO L78 Accepts]: Start accepts. Automaton has 4518 states and 6526 transitions. Word has length 57 [2022-04-07 01:02:30,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:30,016 INFO L478 AbstractCegarLoop]: Abstraction has 4518 states and 6526 transitions. [2022-04-07 01:02:30,016 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:02:30,016 INFO L276 IsEmpty]: Start isEmpty. Operand 4518 states and 6526 transitions. [2022-04-07 01:02:30,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-07 01:02:30,018 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:30,018 INFO L499 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] [2022-04-07 01:02:30,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-07 01:02:30,241 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:30,241 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:30,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:30,241 INFO L85 PathProgramCache]: Analyzing trace with hash 111621356, now seen corresponding path program 1 times [2022-04-07 01:02:30,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:30,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1356675769] [2022-04-07 01:02:30,245 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:30,245 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:30,245 INFO L85 PathProgramCache]: Analyzing trace with hash 111621356, now seen corresponding path program 2 times [2022-04-07 01:02:30,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:30,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766772579] [2022-04-07 01:02:30,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:30,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:30,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:30,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:30,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:02:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:30,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-07 01:02:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:30,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:02:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:30,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:30,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:02:30,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:30,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766772579] [2022-04-07 01:02:30,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766772579] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:02:30,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573731985] [2022-04-07 01:02:30,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:02:30,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:30,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:02:30,663 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) [2022-04-07 01:02:30,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-07 01:02:31,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:02:31,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:02:31,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-07 01:02:31,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:02:31,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:02:31,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:02:31,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573731985] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:31,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:02:31,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-04-07 01:02:31,531 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:02:31,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1356675769] [2022-04-07 01:02:31,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1356675769] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:31,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:31,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 01:02:31,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420447432] [2022-04-07 01:02:31,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:02:31,532 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-07 01:02:31,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:31,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-07 01:02:31,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-04-07 01:02:31,533 INFO L87 Difference]: Start difference. First operand 4518 states and 6526 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:02:32,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:32,462 INFO L93 Difference]: Finished difference Result 4533 states and 6544 transitions. [2022-04-07 01:02:32,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-07 01:02:32,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 54 [2022-04-07 01:02:32,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:32,496 INFO L225 Difference]: With dead ends: 4533 [2022-04-07 01:02:32,496 INFO L226 Difference]: Without dead ends: 4509 [2022-04-07 01:02:32,498 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-04-07 01:02:32,500 INFO L913 BasicCegarLoop]: 2806 mSDtfsCounter, 5 mSDsluCounter, 8389 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 11195 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:32,501 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 11195 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 01:02:32,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4509 states. [2022-04-07 01:02:33,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4509 to 4509. [2022-04-07 01:02:33,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4509 states, 2998 states have (on average 1.3575717144763175) internal successors, (4070), 3080 states have internal predecessors, (4070), 1198 states have call successors, (1198), 310 states have call predecessors, (1198), 312 states have return successors, (1246), 1164 states have call predecessors, (1246), 1181 states have call successors, (1246) [2022-04-07 01:02:33,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4509 states to 4509 states and 6514 transitions. [2022-04-07 01:02:33,416 INFO L78 Accepts]: Start accepts. Automaton has 4509 states and 6514 transitions. Word has length 54 [2022-04-07 01:02:33,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:33,417 INFO L478 AbstractCegarLoop]: Abstraction has 4509 states and 6514 transitions. [2022-04-07 01:02:33,417 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:02:33,417 INFO L276 IsEmpty]: Start isEmpty. Operand 4509 states and 6514 transitions. [2022-04-07 01:02:33,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-07 01:02:33,418 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:33,418 INFO L499 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] [2022-04-07 01:02:33,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-07 01:02:33,639 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-04-07 01:02:33,639 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:33,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:33,640 INFO L85 PathProgramCache]: Analyzing trace with hash -851908546, now seen corresponding path program 1 times [2022-04-07 01:02:33,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:33,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [24781621] [2022-04-07 01:02:33,730 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:33,730 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:33,730 INFO L85 PathProgramCache]: Analyzing trace with hash -851908546, now seen corresponding path program 2 times [2022-04-07 01:02:33,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:33,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202172980] [2022-04-07 01:02:33,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:33,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:33,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:34,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:34,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:02:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:34,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-07 01:02:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:34,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:02:34,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:34,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202172980] [2022-04-07 01:02:34,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202172980] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:02:34,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801953750] [2022-04-07 01:02:34,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:02:34,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:34,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:02:34,106 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) [2022-04-07 01:02:34,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-07 01:02:34,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:02:34,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:02:34,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-07 01:02:34,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:02:35,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:02:35,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:02:35,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801953750] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:35,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:02:35,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-04-07 01:02:35,060 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:02:35,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [24781621] [2022-04-07 01:02:35,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [24781621] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:35,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:35,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 01:02:35,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431773876] [2022-04-07 01:02:35,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:02:35,061 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 01:02:35,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:35,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 01:02:35,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-07 01:02:35,062 INFO L87 Difference]: Start difference. First operand 4509 states and 6514 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-07 01:02:36,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:36,032 INFO L93 Difference]: Finished difference Result 4523 states and 6532 transitions. [2022-04-07 01:02:36,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 01:02:36,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 51 [2022-04-07 01:02:36,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:36,044 INFO L225 Difference]: With dead ends: 4523 [2022-04-07 01:02:36,044 INFO L226 Difference]: Without dead ends: 4520 [2022-04-07 01:02:36,045 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-07 01:02:36,046 INFO L913 BasicCegarLoop]: 2778 mSDtfsCounter, 33 mSDsluCounter, 2713 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 5491 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:36,046 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 5491 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 01:02:36,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4520 states. [2022-04-07 01:02:36,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4520 to 4517. [2022-04-07 01:02:36,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4517 states, 3006 states have (on average 1.3579507651363938) internal successors, (4082), 3087 states have internal predecessors, (4082), 1198 states have call successors, (1198), 310 states have call predecessors, (1198), 312 states have return successors, (1246), 1164 states have call predecessors, (1246), 1181 states have call successors, (1246) [2022-04-07 01:02:36,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 6526 transitions. [2022-04-07 01:02:36,891 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 6526 transitions. Word has length 51 [2022-04-07 01:02:36,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:36,892 INFO L478 AbstractCegarLoop]: Abstraction has 4517 states and 6526 transitions. [2022-04-07 01:02:36,892 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-07 01:02:36,892 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 6526 transitions. [2022-04-07 01:02:36,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-07 01:02:36,897 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:36,897 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:02:36,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-04-07 01:02:37,112 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-04-07 01:02:37,112 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:37,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:37,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1656471014, now seen corresponding path program 1 times [2022-04-07 01:02:37,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:37,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [346604521] [2022-04-07 01:02:37,117 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:37,117 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:37,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1656471014, now seen corresponding path program 2 times [2022-04-07 01:02:37,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:37,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774172105] [2022-04-07 01:02:37,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:37,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:37,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:37,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:37,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:02:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:37,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:02:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:37,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 01:02:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:37,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:37,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-07 01:02:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:37,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:37,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:02:37,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:37,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774172105] [2022-04-07 01:02:37,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774172105] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:02:37,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343258971] [2022-04-07 01:02:37,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:02:37,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:37,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:02:37,714 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) [2022-04-07 01:02:37,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-07 01:02:38,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:02:38,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:02:38,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-07 01:02:38,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:02:38,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:02:38,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:02:38,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343258971] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:38,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:02:38,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-04-07 01:02:38,818 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:02:38,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [346604521] [2022-04-07 01:02:38,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [346604521] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:38,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:38,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 01:02:38,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568517386] [2022-04-07 01:02:38,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:02:38,818 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-07 01:02:38,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:38,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-07 01:02:38,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:02:38,819 INFO L87 Difference]: Start difference. First operand 4517 states and 6526 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 01:02:39,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:39,554 INFO L93 Difference]: Finished difference Result 8386 states and 12110 transitions. [2022-04-07 01:02:39,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-07 01:02:39,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 69 [2022-04-07 01:02:39,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:39,571 INFO L225 Difference]: With dead ends: 8386 [2022-04-07 01:02:39,571 INFO L226 Difference]: Without dead ends: 4521 [2022-04-07 01:02:39,581 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:02:39,582 INFO L913 BasicCegarLoop]: 2780 mSDtfsCounter, 3 mSDsluCounter, 8333 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11113 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:39,582 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 11113 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 01:02:39,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2022-04-07 01:02:40,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 4521. [2022-04-07 01:02:40,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4521 states, 3009 states have (on average 1.3575938850116318) internal successors, (4085), 3090 states have internal predecessors, (4085), 1198 states have call successors, (1198), 310 states have call predecessors, (1198), 313 states have return successors, (1248), 1165 states have call predecessors, (1248), 1181 states have call successors, (1248) [2022-04-07 01:02:40,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4521 states to 4521 states and 6531 transitions. [2022-04-07 01:02:40,439 INFO L78 Accepts]: Start accepts. Automaton has 4521 states and 6531 transitions. Word has length 69 [2022-04-07 01:02:40,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:40,440 INFO L478 AbstractCegarLoop]: Abstraction has 4521 states and 6531 transitions. [2022-04-07 01:02:40,440 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 01:02:40,440 INFO L276 IsEmpty]: Start isEmpty. Operand 4521 states and 6531 transitions. [2022-04-07 01:02:40,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-07 01:02:40,441 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:40,441 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:02:40,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-04-07 01:02:40,662 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-04-07 01:02:40,663 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:40,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:40,664 INFO L85 PathProgramCache]: Analyzing trace with hash 454819355, now seen corresponding path program 1 times [2022-04-07 01:02:40,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:40,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1756887599] [2022-04-07 01:02:40,666 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:40,666 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:40,666 INFO L85 PathProgramCache]: Analyzing trace with hash 454819355, now seen corresponding path program 2 times [2022-04-07 01:02:40,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:40,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356549102] [2022-04-07 01:02:40,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:40,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:40,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:41,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:41,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:02:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:41,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:02:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:41,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 01:02:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:41,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:41,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-07 01:02:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:41,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:41,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:41,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:02:41,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:41,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356549102] [2022-04-07 01:02:41,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356549102] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:02:41,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165356131] [2022-04-07 01:02:41,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:02:41,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:41,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:02:41,118 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:02:41,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-04-07 01:02:42,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:02:42,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:02:42,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-07 01:02:42,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:02:42,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:02:42,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:02:42,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165356131] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:42,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:02:42,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-04-07 01:02:42,244 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:02:42,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1756887599] [2022-04-07 01:02:42,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1756887599] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:42,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:42,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 01:02:42,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440114385] [2022-04-07 01:02:42,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:02:42,245 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 01:02:42,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:42,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 01:02:42,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:02:42,245 INFO L87 Difference]: Start difference. First operand 4521 states and 6531 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 01:02:43,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:43,142 INFO L93 Difference]: Finished difference Result 7729 states and 11118 transitions. [2022-04-07 01:02:43,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-07 01:02:43,142 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 69 [2022-04-07 01:02:43,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:43,196 INFO L225 Difference]: With dead ends: 7729 [2022-04-07 01:02:43,196 INFO L226 Difference]: Without dead ends: 4396 [2022-04-07 01:02:43,205 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-04-07 01:02:43,205 INFO L913 BasicCegarLoop]: 2776 mSDtfsCounter, 5 mSDsluCounter, 16617 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 19393 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:43,205 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 19393 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-07 01:02:43,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4396 states. [2022-04-07 01:02:44,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4396 to 4393. [2022-04-07 01:02:44,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4393 states, 2924 states have (on average 1.353625170998632) internal successors, (3958), 2991 states have internal predecessors, (3958), 1160 states have call successors, (1160), 290 states have call predecessors, (1160), 308 states have return successors, (1191), 1156 states have call predecessors, (1191), 1146 states have call successors, (1191) [2022-04-07 01:02:44,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4393 states to 4393 states and 6309 transitions. [2022-04-07 01:02:44,058 INFO L78 Accepts]: Start accepts. Automaton has 4393 states and 6309 transitions. Word has length 69 [2022-04-07 01:02:44,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:44,058 INFO L478 AbstractCegarLoop]: Abstraction has 4393 states and 6309 transitions. [2022-04-07 01:02:44,058 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 01:02:44,058 INFO L276 IsEmpty]: Start isEmpty. Operand 4393 states and 6309 transitions. [2022-04-07 01:02:44,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-07 01:02:44,060 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:44,060 INFO L499 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] [2022-04-07 01:02:44,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-04-07 01:02:44,287 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-04-07 01:02:44,287 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:44,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:44,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1515186020, now seen corresponding path program 1 times [2022-04-07 01:02:44,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:44,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1202603858] [2022-04-07 01:02:44,300 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:44,300 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:44,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1515186020, now seen corresponding path program 2 times [2022-04-07 01:02:44,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:44,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498462141] [2022-04-07 01:02:44,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:44,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:44,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:44,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:44,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:02:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:44,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-07 01:02:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:44,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:02:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:44,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:02:44,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:44,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498462141] [2022-04-07 01:02:44,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498462141] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:02:44,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356503465] [2022-04-07 01:02:44,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:02:44,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:44,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:02:44,686 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:02:44,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-04-07 01:02:45,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:02:45,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:02:45,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-07 01:02:45,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:02:45,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:02:45,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:02:45,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356503465] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:45,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:02:45,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-04-07 01:02:45,738 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:02:45,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1202603858] [2022-04-07 01:02:45,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1202603858] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:45,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:45,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 01:02:45,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731884549] [2022-04-07 01:02:45,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:02:45,738 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 01:02:45,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:45,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 01:02:45,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-04-07 01:02:45,739 INFO L87 Difference]: Start difference. First operand 4393 states and 6309 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:02:46,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:46,584 INFO L93 Difference]: Finished difference Result 4436 states and 6360 transitions. [2022-04-07 01:02:46,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 01:02:46,585 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2022-04-07 01:02:46,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:46,598 INFO L225 Difference]: With dead ends: 4436 [2022-04-07 01:02:46,598 INFO L226 Difference]: Without dead ends: 4392 [2022-04-07 01:02:46,600 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-04-07 01:02:46,602 INFO L913 BasicCegarLoop]: 2772 mSDtfsCounter, 10 mSDsluCounter, 11069 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 13841 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:46,604 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 13841 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 01:02:46,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4392 states. [2022-04-07 01:02:47,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4392 to 4390. [2022-04-07 01:02:47,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4390 states, 2922 states have (on average 1.3535249828884326) internal successors, (3955), 2989 states have internal predecessors, (3955), 1160 states have call successors, (1160), 290 states have call predecessors, (1160), 307 states have return successors, (1190), 1155 states have call predecessors, (1190), 1146 states have call successors, (1190) [2022-04-07 01:02:47,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4390 states to 4390 states and 6305 transitions. [2022-04-07 01:02:47,388 INFO L78 Accepts]: Start accepts. Automaton has 4390 states and 6305 transitions. Word has length 52 [2022-04-07 01:02:47,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:47,388 INFO L478 AbstractCegarLoop]: Abstraction has 4390 states and 6305 transitions. [2022-04-07 01:02:47,388 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:02:47,388 INFO L276 IsEmpty]: Start isEmpty. Operand 4390 states and 6305 transitions. [2022-04-07 01:02:47,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-07 01:02:47,391 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:47,391 INFO L499 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] [2022-04-07 01:02:47,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-04-07 01:02:47,613 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-04-07 01:02:47,614 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:47,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:47,614 INFO L85 PathProgramCache]: Analyzing trace with hash 851781494, now seen corresponding path program 1 times [2022-04-07 01:02:47,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:47,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1862584384] [2022-04-07 01:02:47,629 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:47,630 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:47,630 INFO L85 PathProgramCache]: Analyzing trace with hash 851781494, now seen corresponding path program 2 times [2022-04-07 01:02:47,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:47,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430612987] [2022-04-07 01:02:47,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:47,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:47,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:47,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:47,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:02:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:47,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-07 01:02:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:47,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:02:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:48,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:48,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:02:48,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:48,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430612987] [2022-04-07 01:02:48,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430612987] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:02:48,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124837914] [2022-04-07 01:02:48,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:02:48,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:48,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:02:48,020 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:02:48,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-04-07 01:02:48,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:02:48,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:02:48,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-07 01:02:48,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:02:49,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:02:49,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:02:49,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124837914] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:49,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:02:49,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-04-07 01:02:49,071 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:02:49,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1862584384] [2022-04-07 01:02:49,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1862584384] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:49,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:49,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 01:02:49,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66220035] [2022-04-07 01:02:49,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:02:49,071 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 01:02:49,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:49,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 01:02:49,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:02:49,072 INFO L87 Difference]: Start difference. First operand 4390 states and 6305 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-07 01:02:50,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:50,385 INFO L93 Difference]: Finished difference Result 4408 states and 6326 transitions. [2022-04-07 01:02:50,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-07 01:02:50,386 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2022-04-07 01:02:50,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:50,396 INFO L225 Difference]: With dead ends: 4408 [2022-04-07 01:02:50,396 INFO L226 Difference]: Without dead ends: 4388 [2022-04-07 01:02:50,397 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-04-07 01:02:50,397 INFO L913 BasicCegarLoop]: 2782 mSDtfsCounter, 7 mSDsluCounter, 16651 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 19433 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:50,397 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 19433 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-07 01:02:50,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4388 states. [2022-04-07 01:02:51,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4388 to 4388. [2022-04-07 01:02:51,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4388 states, 2921 states have (on average 1.3533036631290654) internal successors, (3953), 2988 states have internal predecessors, (3953), 1159 states have call successors, (1159), 290 states have call predecessors, (1159), 307 states have return successors, (1189), 1154 states have call predecessors, (1189), 1145 states have call successors, (1189) [2022-04-07 01:02:51,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 6301 transitions. [2022-04-07 01:02:51,126 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 6301 transitions. Word has length 54 [2022-04-07 01:02:51,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:51,126 INFO L478 AbstractCegarLoop]: Abstraction has 4388 states and 6301 transitions. [2022-04-07 01:02:51,126 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-07 01:02:51,126 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 6301 transitions. [2022-04-07 01:02:51,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-07 01:02:51,127 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:51,127 INFO L499 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] [2022-04-07 01:02:51,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-04-07 01:02:51,332 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-04-07 01:02:51,333 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:51,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:51,333 INFO L85 PathProgramCache]: Analyzing trace with hash 413420634, now seen corresponding path program 1 times [2022-04-07 01:02:51,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:51,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [430732100] [2022-04-07 01:02:51,340 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:51,340 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:51,340 INFO L85 PathProgramCache]: Analyzing trace with hash 413420634, now seen corresponding path program 2 times [2022-04-07 01:02:51,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:51,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577607313] [2022-04-07 01:02:51,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:51,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:51,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:51,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:51,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:02:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:52,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:02:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:52,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:52,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:02:52,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:52,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577607313] [2022-04-07 01:02:52,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577607313] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:02:52,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491499203] [2022-04-07 01:02:52,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:02:52,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:52,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:02:52,071 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:02:52,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-04-07 01:02:53,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:02:53,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:02:53,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-07 01:02:53,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:02:53,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:02:53,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:02:53,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491499203] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:53,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:02:53,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-04-07 01:02:53,295 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:02:53,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [430732100] [2022-04-07 01:02:53,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [430732100] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:53,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:53,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 01:02:53,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229750939] [2022-04-07 01:02:53,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:02:53,295 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 01:02:53,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:53,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 01:02:53,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-04-07 01:02:53,296 INFO L87 Difference]: Start difference. First operand 4388 states and 6301 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-07 01:02:54,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:54,223 INFO L93 Difference]: Finished difference Result 4403 states and 6319 transitions. [2022-04-07 01:02:54,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-07 01:02:54,223 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 53 [2022-04-07 01:02:54,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:54,236 INFO L225 Difference]: With dead ends: 4403 [2022-04-07 01:02:54,236 INFO L226 Difference]: Without dead ends: 4382 [2022-04-07 01:02:54,239 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:02:54,240 INFO L913 BasicCegarLoop]: 2768 mSDtfsCounter, 18 mSDsluCounter, 16572 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 19340 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:54,241 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 19340 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 01:02:54,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2022-04-07 01:02:55,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 4382. [2022-04-07 01:02:55,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 2917 states have (on average 1.3531025025711347) internal successors, (3947), 2983 states have internal predecessors, (3947), 1158 states have call successors, (1158), 290 states have call predecessors, (1158), 306 states have return successors, (1187), 1152 states have call predecessors, (1187), 1144 states have call successors, (1187) [2022-04-07 01:02:55,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 6292 transitions. [2022-04-07 01:02:55,055 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 6292 transitions. Word has length 53 [2022-04-07 01:02:55,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:55,055 INFO L478 AbstractCegarLoop]: Abstraction has 4382 states and 6292 transitions. [2022-04-07 01:02:55,055 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-07 01:02:55,055 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 6292 transitions. [2022-04-07 01:02:55,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-07 01:02:55,057 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:55,057 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:02:55,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-04-07 01:02:55,275 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:55,275 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:55,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:55,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1241941963, now seen corresponding path program 1 times [2022-04-07 01:02:55,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:55,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1814926936] [2022-04-07 01:02:55,280 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:55,280 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:55,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1241941963, now seen corresponding path program 2 times [2022-04-07 01:02:55,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:55,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50622282] [2022-04-07 01:02:55,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:55,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:55,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:55,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:55,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:02:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:55,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:02:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:55,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:55,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:02:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:55,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:55,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:02:55,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:55,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50622282] [2022-04-07 01:02:55,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50622282] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:02:55,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183112931] [2022-04-07 01:02:55,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:02:55,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:55,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:02:55,694 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:02:55,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-04-07 01:02:56,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:02:56,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:02:56,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 1682 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-07 01:02:56,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:02:56,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:02:56,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:02:56,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183112931] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:56,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:02:56,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-04-07 01:02:56,836 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:02:56,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1814926936] [2022-04-07 01:02:56,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1814926936] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:02:56,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:02:56,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 01:02:56,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056693288] [2022-04-07 01:02:56,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:02:56,837 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 01:02:56,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:56,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 01:02:56,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-04-07 01:02:56,837 INFO L87 Difference]: Start difference. First operand 4382 states and 6292 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-07 01:02:57,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:02:57,552 INFO L93 Difference]: Finished difference Result 4427 states and 6345 transitions. [2022-04-07 01:02:57,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 01:02:57,553 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2022-04-07 01:02:57,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:02:57,590 INFO L225 Difference]: With dead ends: 4427 [2022-04-07 01:02:57,590 INFO L226 Difference]: Without dead ends: 4382 [2022-04-07 01:02:57,592 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-04-07 01:02:57,592 INFO L913 BasicCegarLoop]: 2766 mSDtfsCounter, 25 mSDsluCounter, 11004 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 13770 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:02:57,592 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 13770 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-07 01:02:57,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2022-04-07 01:02:58,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 4382. [2022-04-07 01:02:58,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 2917 states have (on average 1.3527596846074734) internal successors, (3946), 2983 states have internal predecessors, (3946), 1158 states have call successors, (1158), 290 states have call predecessors, (1158), 306 states have return successors, (1187), 1152 states have call predecessors, (1187), 1144 states have call successors, (1187) [2022-04-07 01:02:58,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 6291 transitions. [2022-04-07 01:02:58,336 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 6291 transitions. Word has length 60 [2022-04-07 01:02:58,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:02:58,337 INFO L478 AbstractCegarLoop]: Abstraction has 4382 states and 6291 transitions. [2022-04-07 01:02:58,337 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-07 01:02:58,337 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 6291 transitions. [2022-04-07 01:02:58,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-04-07 01:02:58,338 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:02:58,338 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:02:58,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-04-07 01:02:58,559 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-04-07 01:02:58,559 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:02:58,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:02:58,560 INFO L85 PathProgramCache]: Analyzing trace with hash 2054843116, now seen corresponding path program 1 times [2022-04-07 01:02:58,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:02:58,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1767344163] [2022-04-07 01:02:58,562 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:02:58,562 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:02:58,562 INFO L85 PathProgramCache]: Analyzing trace with hash 2054843116, now seen corresponding path program 2 times [2022-04-07 01:02:58,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:02:58,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859556835] [2022-04-07 01:02:58,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:02:58,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:02:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:58,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:02:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:58,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:02:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:58,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:02:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:58,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:02:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:58,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 01:02:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:58,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:58,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-07 01:02:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:58,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:02:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:02:58,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:02:58,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:02:58,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859556835] [2022-04-07 01:02:58,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859556835] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:02:58,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696938803] [2022-04-07 01:02:58,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:02:58,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:02:58,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:02:58,984 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:02:59,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-04-07 01:02:59,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:02:59,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:02:59,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 1931 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-07 01:02:59,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:03:00,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:03:00,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:03:00,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696938803] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:03:00,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:03:00,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-04-07 01:03:00,131 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:03:00,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1767344163] [2022-04-07 01:03:00,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1767344163] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:03:00,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:03:00,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 01:03:00,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353584321] [2022-04-07 01:03:00,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:03:00,131 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 01:03:00,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:03:00,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 01:03:00,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-07 01:03:00,132 INFO L87 Difference]: Start difference. First operand 4382 states and 6291 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-07 01:03:01,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:03:01,296 INFO L93 Difference]: Finished difference Result 7277 states and 10413 transitions. [2022-04-07 01:03:01,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 01:03:01,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 72 [2022-04-07 01:03:01,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:03:01,339 INFO L225 Difference]: With dead ends: 7277 [2022-04-07 01:03:01,339 INFO L226 Difference]: Without dead ends: 6964 [2022-04-07 01:03:01,344 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-07 01:03:01,345 INFO L913 BasicCegarLoop]: 3124 mSDtfsCounter, 2635 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2635 SdHoareTripleChecker+Valid, 5117 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:03:01,345 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2635 Valid, 5117 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 01:03:01,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6964 states. [2022-04-07 01:03:02,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6964 to 6826. [2022-04-07 01:03:02,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6826 states, 4517 states have (on average 1.357759574939119) internal successors, (6133), 4629 states have internal predecessors, (6133), 1850 states have call successors, (1850), 437 states have call predecessors, (1850), 458 states have return successors, (1887), 1830 states have call predecessors, (1887), 1839 states have call successors, (1887) [2022-04-07 01:03:02,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6826 states to 6826 states and 9870 transitions. [2022-04-07 01:03:02,536 INFO L78 Accepts]: Start accepts. Automaton has 6826 states and 9870 transitions. Word has length 72 [2022-04-07 01:03:02,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:03:02,539 INFO L478 AbstractCegarLoop]: Abstraction has 6826 states and 9870 transitions. [2022-04-07 01:03:02,540 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-07 01:03:02,540 INFO L276 IsEmpty]: Start isEmpty. Operand 6826 states and 9870 transitions. [2022-04-07 01:03:02,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-07 01:03:02,543 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:03:02,543 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:03:02,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-04-07 01:03:02,765 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-04-07 01:03:02,765 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:03:02,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:03:02,765 INFO L85 PathProgramCache]: Analyzing trace with hash 898925172, now seen corresponding path program 1 times [2022-04-07 01:03:02,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:03:02,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1703791991] [2022-04-07 01:03:02,769 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:03:02,769 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:03:02,769 INFO L85 PathProgramCache]: Analyzing trace with hash 898925172, now seen corresponding path program 2 times [2022-04-07 01:03:02,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:03:02,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325716101] [2022-04-07 01:03:02,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:03:02,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:03:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:03,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:03:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:03,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:03:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:03,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:03:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:03,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-07 01:03:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:03,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 01:03:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:03,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:03:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:03,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:03:03,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:03:03,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325716101] [2022-04-07 01:03:03,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325716101] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:03:03,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173203200] [2022-04-07 01:03:03,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:03:03,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:03:03,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:03:03,343 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:03:03,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-04-07 01:03:04,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:03:04,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:03:04,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 1620 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-07 01:03:04,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:03:04,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:03:04,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:03:04,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173203200] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:03:04,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:03:04,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-04-07 01:03:04,425 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:03:04,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1703791991] [2022-04-07 01:03:04,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1703791991] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:03:04,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:03:04,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 01:03:04,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866818325] [2022-04-07 01:03:04,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:03:04,425 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 01:03:04,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:03:04,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 01:03:04,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-04-07 01:03:04,426 INFO L87 Difference]: Start difference. First operand 6826 states and 9870 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:03:05,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:03:05,703 INFO L93 Difference]: Finished difference Result 6967 states and 10051 transitions. [2022-04-07 01:03:05,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 01:03:05,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 60 [2022-04-07 01:03:05,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:03:05,724 INFO L225 Difference]: With dead ends: 6967 [2022-04-07 01:03:05,725 INFO L226 Difference]: Without dead ends: 6855 [2022-04-07 01:03:05,729 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-04-07 01:03:05,730 INFO L913 BasicCegarLoop]: 2776 mSDtfsCounter, 90 mSDsluCounter, 10933 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 13709 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:03:05,730 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 13709 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-07 01:03:05,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6855 states. [2022-04-07 01:03:07,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6855 to 6828. [2022-04-07 01:03:07,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6828 states, 4519 states have (on average 1.357379951316663) internal successors, (6134), 4631 states have internal predecessors, (6134), 1850 states have call successors, (1850), 437 states have call predecessors, (1850), 458 states have return successors, (1887), 1830 states have call predecessors, (1887), 1839 states have call successors, (1887) [2022-04-07 01:03:07,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6828 states to 6828 states and 9871 transitions. [2022-04-07 01:03:07,263 INFO L78 Accepts]: Start accepts. Automaton has 6828 states and 9871 transitions. Word has length 60 [2022-04-07 01:03:07,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:03:07,263 INFO L478 AbstractCegarLoop]: Abstraction has 6828 states and 9871 transitions. [2022-04-07 01:03:07,263 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:03:07,263 INFO L276 IsEmpty]: Start isEmpty. Operand 6828 states and 9871 transitions. [2022-04-07 01:03:07,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-07 01:03:07,284 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:03:07,284 INFO L499 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] [2022-04-07 01:03:07,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-04-07 01:03:07,503 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-04-07 01:03:07,504 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:03:07,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:03:07,504 INFO L85 PathProgramCache]: Analyzing trace with hash 696011681, now seen corresponding path program 1 times [2022-04-07 01:03:07,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:03:07,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1703539403] [2022-04-07 01:03:07,507 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:03:07,507 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:03:07,507 INFO L85 PathProgramCache]: Analyzing trace with hash 696011681, now seen corresponding path program 2 times [2022-04-07 01:03:07,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:03:07,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842749217] [2022-04-07 01:03:07,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:03:07,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:03:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:07,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:03:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:07,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:03:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:07,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:03:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:07,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:03:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:07,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:03:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:08,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:03:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:08,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:03:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:08,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:03:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:03:08,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:03:08,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842749217] [2022-04-07 01:03:08,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842749217] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:03:08,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726436563] [2022-04-07 01:03:08,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:03:08,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:03:08,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:03:08,052 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:03:08,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-04-07 01:03:09,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:03:09,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:03:09,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 1601 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-07 01:03:09,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:03:09,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:03:09,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:03:09,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726436563] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:03:09,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:03:09,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2022-04-07 01:03:09,232 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:03:09,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1703539403] [2022-04-07 01:03:09,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1703539403] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:03:09,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:03:09,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-07 01:03:09,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163988237] [2022-04-07 01:03:09,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:03:09,233 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-07 01:03:09,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:03:09,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-07 01:03:09,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-04-07 01:03:09,233 INFO L87 Difference]: Start difference. First operand 6828 states and 9871 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-07 01:03:10,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:03:10,460 INFO L93 Difference]: Finished difference Result 6884 states and 9934 transitions. [2022-04-07 01:03:10,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-07 01:03:10,471 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2022-04-07 01:03:10,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:03:10,491 INFO L225 Difference]: With dead ends: 6884 [2022-04-07 01:03:10,491 INFO L226 Difference]: Without dead ends: 6835 [2022-04-07 01:03:10,520 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-04-07 01:03:10,521 INFO L913 BasicCegarLoop]: 2757 mSDtfsCounter, 45 mSDsluCounter, 13725 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 16482 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:03:10,521 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 16482 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 01:03:10,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6835 states. [2022-04-07 01:03:11,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6835 to 6833. [2022-04-07 01:03:11,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6833 states, 4523 states have (on average 1.3570638956444838) internal successors, (6138), 4634 states have internal predecessors, (6138), 1850 states have call successors, (1850), 437 states have call predecessors, (1850), 459 states have return successors, (1888), 1832 states have call predecessors, (1888), 1839 states have call successors, (1888) [2022-04-07 01:03:11,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6833 states to 6833 states and 9876 transitions. [2022-04-07 01:03:11,781 INFO L78 Accepts]: Start accepts. Automaton has 6833 states and 9876 transitions. Word has length 63 [2022-04-07 01:03:11,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:03:11,781 INFO L478 AbstractCegarLoop]: Abstraction has 6833 states and 9876 transitions. [2022-04-07 01:03:11,781 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-07 01:03:11,781 INFO L276 IsEmpty]: Start isEmpty. Operand 6833 states and 9876 transitions. [2022-04-07 01:03:11,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-07 01:03:11,783 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:03:11,783 INFO L499 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] [2022-04-07 01:03:11,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-04-07 01:03:11,995 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:03:11,995 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:03:11,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:03:11,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1314092160, now seen corresponding path program 1 times [2022-04-07 01:03:11,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:03:11,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [403993721] [2022-04-07 01:03:12,018 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:03:12,018 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:03:12,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1314092160, now seen corresponding path program 2 times [2022-04-07 01:03:12,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:03:12,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584571562] [2022-04-07 01:03:12,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:03:12,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:03:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:12,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:03:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:12,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:03:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:12,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:03:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:12,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:03:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:12,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:03:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:12,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:03:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:12,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:03:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:12,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:03:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:12,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:03:12,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:03:12,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584571562] [2022-04-07 01:03:12,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584571562] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:03:12,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176888566] [2022-04-07 01:03:12,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:03:12,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:03:12,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:03:12,649 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:03:12,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-04-07 01:03:13,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:03:13,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:03:13,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 1602 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-07 01:03:13,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:03:13,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:03:13,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:03:13,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176888566] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:03:13,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:03:13,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2022-04-07 01:03:13,896 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:03:13,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [403993721] [2022-04-07 01:03:13,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [403993721] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:03:13,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:03:13,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 01:03:13,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978703757] [2022-04-07 01:03:13,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:03:13,896 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 01:03:13,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:03:13,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 01:03:13,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-04-07 01:03:13,897 INFO L87 Difference]: Start difference. First operand 6833 states and 9876 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-07 01:03:15,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:03:15,382 INFO L93 Difference]: Finished difference Result 7125 states and 10235 transitions. [2022-04-07 01:03:15,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-07 01:03:15,382 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2022-04-07 01:03:15,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:03:15,403 INFO L225 Difference]: With dead ends: 7125 [2022-04-07 01:03:15,404 INFO L226 Difference]: Without dead ends: 6826 [2022-04-07 01:03:15,407 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-04-07 01:03:15,407 INFO L913 BasicCegarLoop]: 2779 mSDtfsCounter, 7 mSDsluCounter, 22185 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 24964 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:03:15,407 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 24964 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 01:03:15,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6826 states. [2022-04-07 01:03:16,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6826 to 6826. [2022-04-07 01:03:16,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6826 states, 4518 states have (on average 1.3572377158034528) internal successors, (6132), 4630 states have internal predecessors, (6132), 1849 states have call successors, (1849), 437 states have call predecessors, (1849), 458 states have return successors, (1885), 1829 states have call predecessors, (1885), 1838 states have call successors, (1885) [2022-04-07 01:03:16,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6826 states to 6826 states and 9866 transitions. [2022-04-07 01:03:16,711 INFO L78 Accepts]: Start accepts. Automaton has 6826 states and 9866 transitions. Word has length 63 [2022-04-07 01:03:16,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:03:16,711 INFO L478 AbstractCegarLoop]: Abstraction has 6826 states and 9866 transitions. [2022-04-07 01:03:16,711 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-07 01:03:16,712 INFO L276 IsEmpty]: Start isEmpty. Operand 6826 states and 9866 transitions. [2022-04-07 01:03:16,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-07 01:03:16,728 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:03:16,728 INFO L499 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] [2022-04-07 01:03:16,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-04-07 01:03:16,929 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:03:16,929 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:03:16,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:03:16,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1827694763, now seen corresponding path program 1 times [2022-04-07 01:03:16,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:03:16,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [34800367] [2022-04-07 01:03:16,989 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:03:16,989 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:03:16,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1827694763, now seen corresponding path program 2 times [2022-04-07 01:03:16,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:03:16,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823007551] [2022-04-07 01:03:16,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:03:16,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:03:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:17,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:03:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:17,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:03:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:17,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:03:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:17,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-07 01:03:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:17,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 01:03:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:17,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:03:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:17,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:03:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:17,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:03:17,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:03:17,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823007551] [2022-04-07 01:03:17,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823007551] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:03:17,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625133810] [2022-04-07 01:03:17,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:03:17,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:03:17,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:03:17,445 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:03:17,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-04-07 01:03:18,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:03:18,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:03:18,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 1623 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-07 01:03:18,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:03:18,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:03:18,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:03:18,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625133810] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:03:18,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:03:18,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-04-07 01:03:18,722 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:03:18,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [34800367] [2022-04-07 01:03:18,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [34800367] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:03:18,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:03:18,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 01:03:18,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155354926] [2022-04-07 01:03:18,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:03:18,722 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 01:03:18,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:03:18,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 01:03:18,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-04-07 01:03:18,723 INFO L87 Difference]: Start difference. First operand 6826 states and 9866 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-07 01:03:20,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:03:20,108 INFO L93 Difference]: Finished difference Result 6844 states and 9887 transitions. [2022-04-07 01:03:20,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-07 01:03:20,108 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2022-04-07 01:03:20,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:03:20,130 INFO L225 Difference]: With dead ends: 6844 [2022-04-07 01:03:20,130 INFO L226 Difference]: Without dead ends: 6824 [2022-04-07 01:03:20,133 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-04-07 01:03:20,134 INFO L913 BasicCegarLoop]: 2750 mSDtfsCounter, 7 mSDsluCounter, 16471 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 19221 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:03:20,135 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 19221 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 01:03:20,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6824 states. [2022-04-07 01:03:21,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6824 to 6824. [2022-04-07 01:03:21,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6824 states, 4517 states have (on average 1.3570954173123755) internal successors, (6130), 4629 states have internal predecessors, (6130), 1848 states have call successors, (1848), 437 states have call predecessors, (1848), 458 states have return successors, (1884), 1828 states have call predecessors, (1884), 1837 states have call successors, (1884) [2022-04-07 01:03:21,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6824 states to 6824 states and 9862 transitions. [2022-04-07 01:03:21,410 INFO L78 Accepts]: Start accepts. Automaton has 6824 states and 9862 transitions. Word has length 62 [2022-04-07 01:03:21,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:03:21,410 INFO L478 AbstractCegarLoop]: Abstraction has 6824 states and 9862 transitions. [2022-04-07 01:03:21,410 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-07 01:03:21,410 INFO L276 IsEmpty]: Start isEmpty. Operand 6824 states and 9862 transitions. [2022-04-07 01:03:21,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-04-07 01:03:21,412 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:03:21,413 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:03:21,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-04-07 01:03:21,626 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-04-07 01:03:21,627 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:03:21,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:03:21,627 INFO L85 PathProgramCache]: Analyzing trace with hash 502563313, now seen corresponding path program 1 times [2022-04-07 01:03:21,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:03:21,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1963023900] [2022-04-07 01:03:21,629 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:03:21,629 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:03:21,629 INFO L85 PathProgramCache]: Analyzing trace with hash 502563313, now seen corresponding path program 2 times [2022-04-07 01:03:21,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:03:21,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62469726] [2022-04-07 01:03:21,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:03:21,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:03:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:21,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:03:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:21,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:03:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:21,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:03:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:21,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:03:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:21,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:03:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:21,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:03:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:21,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:03:21,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:03:21,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62469726] [2022-04-07 01:03:21,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62469726] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:03:21,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129826827] [2022-04-07 01:03:21,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:03:21,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:03:21,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:03:21,994 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:03:22,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-04-07 01:03:23,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:03:23,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:03:23,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 1609 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-07 01:03:23,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:03:23,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:03:23,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:03:23,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129826827] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:03:23,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:03:23,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-04-07 01:03:23,255 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:03:23,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1963023900] [2022-04-07 01:03:23,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1963023900] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:03:23,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:03:23,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 01:03:23,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712441480] [2022-04-07 01:03:23,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:03:23,256 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 01:03:23,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:03:23,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 01:03:23,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-04-07 01:03:23,256 INFO L87 Difference]: Start difference. First operand 6824 states and 9862 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:03:24,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:03:24,841 INFO L93 Difference]: Finished difference Result 8195 states and 11832 transitions. [2022-04-07 01:03:24,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 01:03:24,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 65 [2022-04-07 01:03:24,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:03:24,877 INFO L225 Difference]: With dead ends: 8195 [2022-04-07 01:03:24,877 INFO L226 Difference]: Without dead ends: 8187 [2022-04-07 01:03:24,888 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-04-07 01:03:24,888 INFO L913 BasicCegarLoop]: 4476 mSDtfsCounter, 1928 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1928 SdHoareTripleChecker+Valid, 7176 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:03:24,889 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1928 Valid, 7176 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 01:03:24,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8187 states. [2022-04-07 01:03:26,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8187 to 6951. [2022-04-07 01:03:26,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6951 states, 4609 states have (on average 1.35170318941202) internal successors, (6230), 4712 states have internal predecessors, (6230), 1858 states have call successors, (1858), 447 states have call predecessors, (1858), 483 states have return successors, (1920), 1864 states have call predecessors, (1920), 1847 states have call successors, (1920) [2022-04-07 01:03:26,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6951 states to 6951 states and 10008 transitions. [2022-04-07 01:03:26,347 INFO L78 Accepts]: Start accepts. Automaton has 6951 states and 10008 transitions. Word has length 65 [2022-04-07 01:03:26,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:03:26,349 INFO L478 AbstractCegarLoop]: Abstraction has 6951 states and 10008 transitions. [2022-04-07 01:03:26,349 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:03:26,349 INFO L276 IsEmpty]: Start isEmpty. Operand 6951 states and 10008 transitions. [2022-04-07 01:03:26,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-07 01:03:26,352 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:03:26,352 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:03:26,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-04-07 01:03:26,566 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-04-07 01:03:26,566 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:03:26,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:03:26,566 INFO L85 PathProgramCache]: Analyzing trace with hash 118946246, now seen corresponding path program 1 times [2022-04-07 01:03:26,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:03:26,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [625620016] [2022-04-07 01:03:26,569 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:03:26,569 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:03:26,569 INFO L85 PathProgramCache]: Analyzing trace with hash 118946246, now seen corresponding path program 2 times [2022-04-07 01:03:26,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:03:26,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315391359] [2022-04-07 01:03:26,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:03:26,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:03:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:26,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:03:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:26,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:03:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:26,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:03:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:26,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-07 01:03:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:26,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 01:03:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:26,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:03:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:26,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:03:26,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:03:26,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315391359] [2022-04-07 01:03:26,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315391359] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:03:26,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339617278] [2022-04-07 01:03:26,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:03:26,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:03:26,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:03:26,998 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:03:26,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-04-07 01:03:28,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:03:28,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:03:28,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-07 01:03:28,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:03:28,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:03:28,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:03:28,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339617278] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:03:28,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:03:28,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2022-04-07 01:03:28,202 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:03:28,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [625620016] [2022-04-07 01:03:28,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [625620016] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:03:28,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:03:28,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 01:03:28,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345913513] [2022-04-07 01:03:28,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:03:28,202 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 01:03:28,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:03:28,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 01:03:28,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-04-07 01:03:28,203 INFO L87 Difference]: Start difference. First operand 6951 states and 10008 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:03:30,680 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 [] [2022-04-07 01:03:32,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:03:32,001 INFO L93 Difference]: Finished difference Result 7057 states and 10147 transitions. [2022-04-07 01:03:32,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 01:03:32,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 68 [2022-04-07 01:03:32,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:03:32,044 INFO L225 Difference]: With dead ends: 7057 [2022-04-07 01:03:32,044 INFO L226 Difference]: Without dead ends: 6978 [2022-04-07 01:03:32,048 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-04-07 01:03:32,051 INFO L913 BasicCegarLoop]: 2757 mSDtfsCounter, 9 mSDsluCounter, 2701 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 5458 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-04-07 01:03:32,052 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 5458 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 39 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-04-07 01:03:32,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6978 states. [2022-04-07 01:03:33,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6978 to 6957. [2022-04-07 01:03:33,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6957 states, 4613 states have (on average 1.3518317797528723) internal successors, (6236), 4718 states have internal predecessors, (6236), 1860 states have call successors, (1860), 447 states have call predecessors, (1860), 483 states have return successors, (1922), 1866 states have call predecessors, (1922), 1849 states have call successors, (1922) [2022-04-07 01:03:33,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6957 states to 6957 states and 10018 transitions. [2022-04-07 01:03:33,582 INFO L78 Accepts]: Start accepts. Automaton has 6957 states and 10018 transitions. Word has length 68 [2022-04-07 01:03:33,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:03:33,583 INFO L478 AbstractCegarLoop]: Abstraction has 6957 states and 10018 transitions. [2022-04-07 01:03:33,583 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:03:33,583 INFO L276 IsEmpty]: Start isEmpty. Operand 6957 states and 10018 transitions. [2022-04-07 01:03:33,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-04-07 01:03:33,585 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:03:33,585 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:03:33,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-04-07 01:03:33,799 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:03:33,800 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:03:33,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:03:33,800 INFO L85 PathProgramCache]: Analyzing trace with hash -774797162, now seen corresponding path program 1 times [2022-04-07 01:03:33,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:03:33,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [736902552] [2022-04-07 01:03:33,803 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:03:33,803 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:03:33,803 INFO L85 PathProgramCache]: Analyzing trace with hash -774797162, now seen corresponding path program 2 times [2022-04-07 01:03:33,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:03:33,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898571219] [2022-04-07 01:03:33,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:03:33,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:03:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:34,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:03:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:34,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:03:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:34,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:03:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:34,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-07 01:03:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:34,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 01:03:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:34,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:03:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:34,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-07 01:03:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:34,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:03:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:34,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:03:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:34,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:03:34,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:03:34,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898571219] [2022-04-07 01:03:34,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898571219] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:03:34,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79827035] [2022-04-07 01:03:34,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:03:34,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:03:34,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:03:34,221 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:03:34,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-04-07 01:03:35,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:03:35,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:03:35,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-07 01:03:35,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:03:35,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:03:35,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:03:35,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79827035] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:03:35,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:03:35,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-04-07 01:03:35,520 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:03:35,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [736902552] [2022-04-07 01:03:35,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [736902552] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:03:35,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:03:35,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 01:03:35,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971707342] [2022-04-07 01:03:35,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:03:35,521 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 01:03:35,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:03:35,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 01:03:35,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-04-07 01:03:35,521 INFO L87 Difference]: Start difference. First operand 6957 states and 10018 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 01:03:37,616 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:03:39,648 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 [] [2022-04-07 01:03:40,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:03:40,929 INFO L93 Difference]: Finished difference Result 7088 states and 10172 transitions. [2022-04-07 01:03:40,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 01:03:40,929 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 2 states have call successors, (9) Word has length 76 [2022-04-07 01:03:40,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:03:40,963 INFO L225 Difference]: With dead ends: 7088 [2022-04-07 01:03:40,963 INFO L226 Difference]: Without dead ends: 6050 [2022-04-07 01:03:40,968 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-04-07 01:03:40,969 INFO L913 BasicCegarLoop]: 2777 mSDtfsCounter, 17 mSDsluCounter, 24877 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 27654 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:03:40,969 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 27654 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 186 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-04-07 01:03:40,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6050 states. [2022-04-07 01:03:42,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6050 to 6015. [2022-04-07 01:03:42,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6015 states, 4016 states have (on average 1.3461155378486056) internal successors, (5406), 4105 states have internal predecessors, (5406), 1573 states have call successors, (1573), 390 states have call predecessors, (1573), 425 states have return successors, (1631), 1582 states have call predecessors, (1631), 1562 states have call successors, (1631) [2022-04-07 01:03:42,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6015 states to 6015 states and 8610 transitions. [2022-04-07 01:03:42,113 INFO L78 Accepts]: Start accepts. Automaton has 6015 states and 8610 transitions. Word has length 76 [2022-04-07 01:03:42,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:03:42,113 INFO L478 AbstractCegarLoop]: Abstraction has 6015 states and 8610 transitions. [2022-04-07 01:03:42,114 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 01:03:42,114 INFO L276 IsEmpty]: Start isEmpty. Operand 6015 states and 8610 transitions. [2022-04-07 01:03:42,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-07 01:03:42,115 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:03:42,115 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:03:42,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-04-07 01:03:42,337 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:03:42,337 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:03:42,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:03:42,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1475878482, now seen corresponding path program 1 times [2022-04-07 01:03:42,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:03:42,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2035750182] [2022-04-07 01:03:42,340 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:03:42,340 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:03:42,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1475878482, now seen corresponding path program 2 times [2022-04-07 01:03:42,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:03:42,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841198966] [2022-04-07 01:03:42,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:03:42,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:03:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:42,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:03:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:42,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:03:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:42,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:03:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:42,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-07 01:03:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:42,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:03:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:42,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:03:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:42,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-07 01:03:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:42,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:03:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:42,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:03:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:42,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:03:42,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:03:42,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841198966] [2022-04-07 01:03:42,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841198966] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:03:42,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398462483] [2022-04-07 01:03:42,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:03:42,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:03:42,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:03:42,712 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:03:42,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-04-07 01:03:43,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:03:43,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:03:43,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-07 01:03:43,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:03:43,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:03:43,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:03:43,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398462483] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:03:43,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:03:43,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2022-04-07 01:03:43,973 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:03:43,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2035750182] [2022-04-07 01:03:43,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2035750182] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:03:43,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:03:43,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 01:03:43,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164397982] [2022-04-07 01:03:43,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:03:43,973 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 01:03:43,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:03:43,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 01:03:43,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-04-07 01:03:43,974 INFO L87 Difference]: Start difference. First operand 6015 states and 8610 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 01:03:45,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:03:45,349 INFO L93 Difference]: Finished difference Result 6086 states and 8690 transitions. [2022-04-07 01:03:45,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 01:03:45,352 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 2 states have call successors, (9) Word has length 68 [2022-04-07 01:03:45,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:03:45,382 INFO L225 Difference]: With dead ends: 6086 [2022-04-07 01:03:45,383 INFO L226 Difference]: Without dead ends: 6005 [2022-04-07 01:03:45,393 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-04-07 01:03:45,394 INFO L913 BasicCegarLoop]: 2750 mSDtfsCounter, 9 mSDsluCounter, 24691 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 27441 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-07 01:03:45,394 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 27441 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-07 01:03:45,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6005 states. [2022-04-07 01:03:46,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6005 to 6005. [2022-04-07 01:03:46,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6005 states, 4010 states have (on average 1.3463840399002494) internal successors, (5399), 4099 states have internal predecessors, (5399), 1570 states have call successors, (1570), 389 states have call predecessors, (1570), 424 states have return successors, (1627), 1579 states have call predecessors, (1627), 1559 states have call successors, (1627) [2022-04-07 01:03:46,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6005 states to 6005 states and 8596 transitions. [2022-04-07 01:03:46,523 INFO L78 Accepts]: Start accepts. Automaton has 6005 states and 8596 transitions. Word has length 68 [2022-04-07 01:03:46,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:03:46,524 INFO L478 AbstractCegarLoop]: Abstraction has 6005 states and 8596 transitions. [2022-04-07 01:03:46,524 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 01:03:46,525 INFO L276 IsEmpty]: Start isEmpty. Operand 6005 states and 8596 transitions. [2022-04-07 01:03:46,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-07 01:03:46,530 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:03:46,531 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:03:46,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-04-07 01:03:46,755 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-04-07 01:03:46,756 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:03:46,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:03:46,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1149198091, now seen corresponding path program 1 times [2022-04-07 01:03:46,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:03:46,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [574014905] [2022-04-07 01:03:46,760 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:03:46,760 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:03:46,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1149198091, now seen corresponding path program 2 times [2022-04-07 01:03:46,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:03:46,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856312276] [2022-04-07 01:03:46,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:03:46,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:03:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:46,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:03:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:47,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:03:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:47,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:03:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:47,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:03:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:47,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:03:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:47,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:03:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:03:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:03:47,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:03:47,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856312276] [2022-04-07 01:03:47,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856312276] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:03:47,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963223019] [2022-04-07 01:03:47,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:03:47,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:03:47,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:03:47,140 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:03:47,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-04-07 01:03:48,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:03:48,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:03:48,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-07 01:03:48,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:03:48,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:03:48,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:03:48,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963223019] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:03:48,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:03:48,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-04-07 01:03:48,605 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:03:48,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [574014905] [2022-04-07 01:03:48,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [574014905] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:03:48,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:03:48,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 01:03:48,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130905981] [2022-04-07 01:03:48,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:03:48,606 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 01:03:48,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:03:48,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 01:03:48,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-04-07 01:03:48,606 INFO L87 Difference]: Start difference. First operand 6005 states and 8596 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-07 01:03:53,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:03:55,019 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:04:00,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:04:00,206 INFO L93 Difference]: Finished difference Result 6118 states and 8751 transitions. [2022-04-07 01:04:00,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-07 01:04:00,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 66 [2022-04-07 01:04:00,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:04:00,219 INFO L225 Difference]: With dead ends: 6118 [2022-04-07 01:04:00,219 INFO L226 Difference]: Without dead ends: 5999 [2022-04-07 01:04:00,221 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:04:00,221 INFO L913 BasicCegarLoop]: 2344 mSDtfsCounter, 1849 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 5169 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2284 SdHoareTripleChecker+Valid, 3433 SdHoareTripleChecker+Invalid, 5771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 5169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:04:00,223 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2284 Valid, 3433 Invalid, 5771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 5169 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-04-07 01:04:00,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5999 states. [2022-04-07 01:04:01,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5999 to 5930. [2022-04-07 01:04:01,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5930 states, 3957 states have (on average 1.350518069244377) internal successors, (5344), 4058 states have internal predecessors, (5344), 1564 states have call successors, (1564), 384 states have call predecessors, (1564), 408 states have return successors, (1598), 1550 states have call predecessors, (1598), 1553 states have call successors, (1598) [2022-04-07 01:04:01,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5930 states to 5930 states and 8506 transitions. [2022-04-07 01:04:01,410 INFO L78 Accepts]: Start accepts. Automaton has 5930 states and 8506 transitions. Word has length 66 [2022-04-07 01:04:01,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:04:01,410 INFO L478 AbstractCegarLoop]: Abstraction has 5930 states and 8506 transitions. [2022-04-07 01:04:01,411 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-07 01:04:01,411 INFO L276 IsEmpty]: Start isEmpty. Operand 5930 states and 8506 transitions. [2022-04-07 01:04:01,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-07 01:04:01,412 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:04:01,412 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:04:01,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-04-07 01:04:01,615 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-04-07 01:04:01,615 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:04:01,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:04:01,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1417992752, now seen corresponding path program 1 times [2022-04-07 01:04:01,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:01,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [780429969] [2022-04-07 01:04:01,618 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:04:01,618 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:04:01,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1417992752, now seen corresponding path program 2 times [2022-04-07 01:04:01,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:04:01,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087477824] [2022-04-07 01:04:01,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:04:01,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:04:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:01,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:04:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:01,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:04:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:01,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:04:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:02,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-07 01:04:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:02,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 01:04:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:02,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:04:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:02,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:04:02,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:04:02,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087477824] [2022-04-07 01:04:02,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087477824] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:04:02,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542560601] [2022-04-07 01:04:02,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:04:02,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:04:02,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:04:02,144 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:04:02,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-04-07 01:04:03,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:04:03,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:04:03,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 1817 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-07 01:04:03,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:04:03,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:04:03,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:04:03,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542560601] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:03,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:04:03,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-04-07 01:04:03,391 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:04:03,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [780429969] [2022-04-07 01:04:03,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [780429969] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:03,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:04:03,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 01:04:03,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294691298] [2022-04-07 01:04:03,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:04:03,392 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 01:04:03,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:03,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 01:04:03,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-07 01:04:03,392 INFO L87 Difference]: Start difference. First operand 5930 states and 8506 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:04:04,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:04:04,672 INFO L93 Difference]: Finished difference Result 5987 states and 8577 transitions. [2022-04-07 01:04:04,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 01:04:04,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 69 [2022-04-07 01:04:04,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:04:04,690 INFO L225 Difference]: With dead ends: 5987 [2022-04-07 01:04:04,690 INFO L226 Difference]: Without dead ends: 5942 [2022-04-07 01:04:04,693 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-07 01:04:04,701 INFO L913 BasicCegarLoop]: 2734 mSDtfsCounter, 15 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 5424 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:04:04,701 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 5424 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 01:04:04,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5942 states. [2022-04-07 01:04:05,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5942 to 5930. [2022-04-07 01:04:05,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5930 states, 3957 states have (on average 1.350518069244377) internal successors, (5344), 4058 states have internal predecessors, (5344), 1564 states have call successors, (1564), 384 states have call predecessors, (1564), 408 states have return successors, (1598), 1550 states have call predecessors, (1598), 1553 states have call successors, (1598) [2022-04-07 01:04:05,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5930 states to 5930 states and 8506 transitions. [2022-04-07 01:04:05,955 INFO L78 Accepts]: Start accepts. Automaton has 5930 states and 8506 transitions. Word has length 69 [2022-04-07 01:04:05,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:04:05,955 INFO L478 AbstractCegarLoop]: Abstraction has 5930 states and 8506 transitions. [2022-04-07 01:04:05,955 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:04:05,955 INFO L276 IsEmpty]: Start isEmpty. Operand 5930 states and 8506 transitions. [2022-04-07 01:04:05,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-04-07 01:04:05,957 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:04:05,959 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:04:05,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-04-07 01:04:06,167 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-04-07 01:04:06,168 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:04:06,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:04:06,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1825278757, now seen corresponding path program 1 times [2022-04-07 01:04:06,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:06,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1233105671] [2022-04-07 01:04:06,170 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:04:06,170 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:04:06,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1825278757, now seen corresponding path program 2 times [2022-04-07 01:04:06,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:04:06,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110800109] [2022-04-07 01:04:06,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:04:06,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:04:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:06,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:04:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:06,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:04:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:06,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:04:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:06,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:04:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:06,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:04:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:06,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:04:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:06,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:04:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:06,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-07 01:04:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:06,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:04:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:06,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:04:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:04:06,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:04:06,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110800109] [2022-04-07 01:04:06,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110800109] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:04:06,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345537606] [2022-04-07 01:04:06,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:04:06,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:04:06,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:04:06,642 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:04:06,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-04-07 01:04:07,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:04:07,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:04:07,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-07 01:04:07,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:04:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:04:08,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:04:08,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345537606] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:08,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:04:08,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-04-07 01:04:08,156 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:04:08,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1233105671] [2022-04-07 01:04:08,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1233105671] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:08,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:04:08,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 01:04:08,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840235434] [2022-04-07 01:04:08,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:04:08,157 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 01:04:08,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:08,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 01:04:08,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-04-07 01:04:08,157 INFO L87 Difference]: Start difference. First operand 5930 states and 8506 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 2 states have call successors, (10) [2022-04-07 01:04:09,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:04:09,572 INFO L93 Difference]: Finished difference Result 5949 states and 8528 transitions. [2022-04-07 01:04:09,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 01:04:09,572 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 2 states have call successors, (10) Word has length 76 [2022-04-07 01:04:09,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:04:09,623 INFO L225 Difference]: With dead ends: 5949 [2022-04-07 01:04:09,624 INFO L226 Difference]: Without dead ends: 5919 [2022-04-07 01:04:09,628 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-04-07 01:04:09,643 INFO L913 BasicCegarLoop]: 2747 mSDtfsCounter, 9 mSDsluCounter, 24656 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 27403 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:04:09,644 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 27403 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 01:04:09,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5919 states. [2022-04-07 01:04:10,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5919 to 5919. [2022-04-07 01:04:10,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5919 states, 3949 states have (on average 1.350974930362117) internal successors, (5335), 4050 states have internal predecessors, (5335), 1563 states have call successors, (1563), 384 states have call predecessors, (1563), 406 states have return successors, (1595), 1547 states have call predecessors, (1595), 1552 states have call successors, (1595) [2022-04-07 01:04:10,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5919 states to 5919 states and 8493 transitions. [2022-04-07 01:04:10,868 INFO L78 Accepts]: Start accepts. Automaton has 5919 states and 8493 transitions. Word has length 76 [2022-04-07 01:04:10,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:04:10,868 INFO L478 AbstractCegarLoop]: Abstraction has 5919 states and 8493 transitions. [2022-04-07 01:04:10,868 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 2 states have call successors, (10) [2022-04-07 01:04:10,868 INFO L276 IsEmpty]: Start isEmpty. Operand 5919 states and 8493 transitions. [2022-04-07 01:04:10,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-07 01:04:10,869 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:04:10,870 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:04:10,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-04-07 01:04:11,080 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-04-07 01:04:11,081 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:04:11,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:04:11,081 INFO L85 PathProgramCache]: Analyzing trace with hash 2036422710, now seen corresponding path program 1 times [2022-04-07 01:04:11,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:11,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1309516548] [2022-04-07 01:04:11,088 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:04:11,088 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:04:11,088 INFO L85 PathProgramCache]: Analyzing trace with hash 2036422710, now seen corresponding path program 2 times [2022-04-07 01:04:11,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:04:11,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389642166] [2022-04-07 01:04:11,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:04:11,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:04:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:11,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:04:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:11,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:04:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:11,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:04:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:11,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:04:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:11,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:04:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:11,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:04:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:11,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:04:11,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:04:11,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389642166] [2022-04-07 01:04:11,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389642166] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:04:11,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563103529] [2022-04-07 01:04:11,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:04:11,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:04:11,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:04:11,430 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:04:11,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-04-07 01:04:12,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:04:12,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:04:12,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-07 01:04:12,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:04:12,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:04:12,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:04:12,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563103529] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:12,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:04:12,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-04-07 01:04:12,867 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:04:12,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1309516548] [2022-04-07 01:04:12,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1309516548] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:12,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:04:12,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 01:04:12,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706338967] [2022-04-07 01:04:12,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:04:12,867 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 01:04:12,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:12,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 01:04:12,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-04-07 01:04:12,868 INFO L87 Difference]: Start difference. First operand 5919 states and 8493 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:04:14,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:04:14,542 INFO L93 Difference]: Finished difference Result 7290 states and 10462 transitions. [2022-04-07 01:04:14,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 01:04:14,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 67 [2022-04-07 01:04:14,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:04:14,565 INFO L225 Difference]: With dead ends: 7290 [2022-04-07 01:04:14,565 INFO L226 Difference]: Without dead ends: 7277 [2022-04-07 01:04:14,569 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-04-07 01:04:14,572 INFO L913 BasicCegarLoop]: 4541 mSDtfsCounter, 1925 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1925 SdHoareTripleChecker+Valid, 7218 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:04:14,573 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1925 Valid, 7218 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 01:04:14,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7277 states. [2022-04-07 01:04:15,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7277 to 6045. [2022-04-07 01:04:15,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6045 states, 4040 states have (on average 1.3448019801980198) internal successors, (5433), 4132 states have internal predecessors, (5433), 1573 states have call successors, (1573), 394 states have call predecessors, (1573), 431 states have return successors, (1631), 1583 states have call predecessors, (1631), 1562 states have call successors, (1631) [2022-04-07 01:04:15,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6045 states to 6045 states and 8637 transitions. [2022-04-07 01:04:15,848 INFO L78 Accepts]: Start accepts. Automaton has 6045 states and 8637 transitions. Word has length 67 [2022-04-07 01:04:15,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:04:15,848 INFO L478 AbstractCegarLoop]: Abstraction has 6045 states and 8637 transitions. [2022-04-07 01:04:15,848 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:04:15,848 INFO L276 IsEmpty]: Start isEmpty. Operand 6045 states and 8637 transitions. [2022-04-07 01:04:15,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-07 01:04:15,850 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:04:15,850 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:04:15,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-04-07 01:04:16,072 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-04-07 01:04:16,073 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:04:16,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:04:16,073 INFO L85 PathProgramCache]: Analyzing trace with hash -822110410, now seen corresponding path program 1 times [2022-04-07 01:04:16,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:16,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1999287720] [2022-04-07 01:04:16,076 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:04:16,077 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:04:16,077 INFO L85 PathProgramCache]: Analyzing trace with hash -822110410, now seen corresponding path program 2 times [2022-04-07 01:04:16,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:04:16,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911482740] [2022-04-07 01:04:16,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:04:16,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:04:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:16,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:04:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:16,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:04:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:16,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:04:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:16,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:04:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:16,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:04:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:16,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:04:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:16,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:04:16,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:04:16,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911482740] [2022-04-07 01:04:16,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911482740] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:04:16,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454962876] [2022-04-07 01:04:16,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:04:16,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:04:16,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:04:16,459 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:04:16,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-04-07 01:04:17,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:04:17,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:04:17,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-07 01:04:17,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:04:17,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:04:17,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:04:17,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454962876] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:17,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:04:17,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 9 [2022-04-07 01:04:17,888 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:04:17,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1999287720] [2022-04-07 01:04:17,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1999287720] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:17,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:04:17,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 01:04:17,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130360500] [2022-04-07 01:04:17,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:04:17,889 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 01:04:17,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:17,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 01:04:17,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-04-07 01:04:17,890 INFO L87 Difference]: Start difference. First operand 6045 states and 8637 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:04:19,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:04:19,087 INFO L93 Difference]: Finished difference Result 8675 states and 12451 transitions. [2022-04-07 01:04:19,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 01:04:19,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 67 [2022-04-07 01:04:19,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:04:19,108 INFO L225 Difference]: With dead ends: 8675 [2022-04-07 01:04:19,108 INFO L226 Difference]: Without dead ends: 6071 [2022-04-07 01:04:19,118 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-04-07 01:04:19,119 INFO L913 BasicCegarLoop]: 2723 mSDtfsCounter, 7 mSDsluCounter, 2718 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5441 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:04:19,119 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 5441 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 01:04:19,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6071 states. [2022-04-07 01:04:20,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6071 to 6051. [2022-04-07 01:04:20,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6051 states, 4046 states have (on average 1.3450321304992585) internal successors, (5442), 4138 states have internal predecessors, (5442), 1573 states have call successors, (1573), 394 states have call predecessors, (1573), 431 states have return successors, (1631), 1583 states have call predecessors, (1631), 1562 states have call successors, (1631) [2022-04-07 01:04:20,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6051 states to 6051 states and 8646 transitions. [2022-04-07 01:04:20,415 INFO L78 Accepts]: Start accepts. Automaton has 6051 states and 8646 transitions. Word has length 67 [2022-04-07 01:04:20,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:04:20,415 INFO L478 AbstractCegarLoop]: Abstraction has 6051 states and 8646 transitions. [2022-04-07 01:04:20,415 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:04:20,415 INFO L276 IsEmpty]: Start isEmpty. Operand 6051 states and 8646 transitions. [2022-04-07 01:04:20,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-07 01:04:20,417 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:04:20,417 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:04:20,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-04-07 01:04:20,639 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:04:20,639 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:04:20,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:04:20,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1783913144, now seen corresponding path program 1 times [2022-04-07 01:04:20,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:20,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [931142770] [2022-04-07 01:04:20,642 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:04:20,642 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:04:20,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1783913144, now seen corresponding path program 2 times [2022-04-07 01:04:20,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:04:20,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626701980] [2022-04-07 01:04:20,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:04:20,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:04:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:20,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:04:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:20,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:04:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:20,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:04:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:20,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:04:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:20,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:04:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:20,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:04:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:21,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:04:21,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:04:21,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626701980] [2022-04-07 01:04:21,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626701980] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:04:21,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835840715] [2022-04-07 01:04:21,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:04:21,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:04:21,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:04:21,020 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:04:21,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-04-07 01:04:22,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:04:22,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:04:22,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-07 01:04:22,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:04:22,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:04:22,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:04:22,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835840715] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:22,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:04:22,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-04-07 01:04:22,751 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:04:22,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [931142770] [2022-04-07 01:04:22,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [931142770] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:22,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:04:22,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 01:04:22,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126254124] [2022-04-07 01:04:22,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:04:22,752 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 01:04:22,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:22,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 01:04:22,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-04-07 01:04:22,752 INFO L87 Difference]: Start difference. First operand 6051 states and 8646 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-07 01:04:27,359 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:04:29,376 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 [] [2022-04-07 01:04:34,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:04:34,468 INFO L93 Difference]: Finished difference Result 6122 states and 8729 transitions. [2022-04-07 01:04:34,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 01:04:34,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 67 [2022-04-07 01:04:34,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:04:34,481 INFO L225 Difference]: With dead ends: 6122 [2022-04-07 01:04:34,481 INFO L226 Difference]: Without dead ends: 5892 [2022-04-07 01:04:34,482 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-04-07 01:04:34,485 INFO L913 BasicCegarLoop]: 2263 mSDtfsCounter, 3392 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 5090 mSolverCounterSat, 1351 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3819 SdHoareTripleChecker+Valid, 3385 SdHoareTripleChecker+Invalid, 6442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1351 IncrementalHoareTripleChecker+Valid, 5090 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-04-07 01:04:34,485 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3819 Valid, 3385 Invalid, 6442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1351 Valid, 5090 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2022-04-07 01:04:34,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5892 states. [2022-04-07 01:04:35,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5892 to 5890. [2022-04-07 01:04:35,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5890 states, 3928 states have (on average 1.3536150712830957) internal successors, (5317), 4042 states have internal predecessors, (5317), 1564 states have call successors, (1564), 386 states have call predecessors, (1564), 397 states have return successors, (1574), 1526 states have call predecessors, (1574), 1553 states have call successors, (1574) [2022-04-07 01:04:35,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5890 states to 5890 states and 8455 transitions. [2022-04-07 01:04:35,792 INFO L78 Accepts]: Start accepts. Automaton has 5890 states and 8455 transitions. Word has length 67 [2022-04-07 01:04:35,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:04:35,793 INFO L478 AbstractCegarLoop]: Abstraction has 5890 states and 8455 transitions. [2022-04-07 01:04:35,793 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-07 01:04:35,793 INFO L276 IsEmpty]: Start isEmpty. Operand 5890 states and 8455 transitions. [2022-04-07 01:04:35,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-07 01:04:35,794 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:04:35,794 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:04:35,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-04-07 01:04:36,017 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-04-07 01:04:36,018 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:04:36,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:04:36,018 INFO L85 PathProgramCache]: Analyzing trace with hash -844197040, now seen corresponding path program 1 times [2022-04-07 01:04:36,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:36,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1213802760] [2022-04-07 01:04:36,027 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:04:36,027 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:04:36,027 INFO L85 PathProgramCache]: Analyzing trace with hash -844197040, now seen corresponding path program 2 times [2022-04-07 01:04:36,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:04:36,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580106910] [2022-04-07 01:04:36,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:04:36,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:04:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:36,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:04:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:36,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:04:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:36,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:04:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:36,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:04:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:36,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:04:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:36,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:04:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:36,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:04:36,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:04:36,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580106910] [2022-04-07 01:04:36,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580106910] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:04:36,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169341947] [2022-04-07 01:04:36,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:04:36,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:04:36,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:04:36,522 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:04:36,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-04-07 01:04:37,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:04:37,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:04:37,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-07 01:04:37,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:04:37,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:04:37,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:04:37,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169341947] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:37,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:04:37,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2022-04-07 01:04:37,965 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:04:37,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1213802760] [2022-04-07 01:04:37,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1213802760] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:37,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:04:37,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 01:04:37,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842816498] [2022-04-07 01:04:37,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:04:37,966 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-07 01:04:37,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:37,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-07 01:04:37,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:04:37,966 INFO L87 Difference]: Start difference. First operand 5890 states and 8455 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:04:39,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:04:39,505 INFO L93 Difference]: Finished difference Result 5929 states and 8500 transitions. [2022-04-07 01:04:39,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-07 01:04:39,506 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 68 [2022-04-07 01:04:39,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:04:39,519 INFO L225 Difference]: With dead ends: 5929 [2022-04-07 01:04:39,519 INFO L226 Difference]: Without dead ends: 5925 [2022-04-07 01:04:39,539 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-04-07 01:04:39,543 INFO L913 BasicCegarLoop]: 2719 mSDtfsCounter, 11 mSDsluCounter, 19009 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21728 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:04:39,543 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 21728 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 01:04:39,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5925 states. [2022-04-07 01:04:40,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5925 to 5910. [2022-04-07 01:04:40,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5910 states, 3945 states have (on average 1.3523447401774398) internal successors, (5335), 4060 states have internal predecessors, (5335), 1565 states have call successors, (1565), 386 states have call predecessors, (1565), 399 states have return successors, (1580), 1529 states have call predecessors, (1580), 1554 states have call successors, (1580) [2022-04-07 01:04:40,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5910 states to 5910 states and 8480 transitions. [2022-04-07 01:04:40,879 INFO L78 Accepts]: Start accepts. Automaton has 5910 states and 8480 transitions. Word has length 68 [2022-04-07 01:04:40,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:04:40,879 INFO L478 AbstractCegarLoop]: Abstraction has 5910 states and 8480 transitions. [2022-04-07 01:04:40,880 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:04:40,880 INFO L276 IsEmpty]: Start isEmpty. Operand 5910 states and 8480 transitions. [2022-04-07 01:04:40,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-07 01:04:40,881 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:04:40,881 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:04:40,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-04-07 01:04:41,095 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:04:41,095 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:04:41,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:04:41,097 INFO L85 PathProgramCache]: Analyzing trace with hash -843920210, now seen corresponding path program 1 times [2022-04-07 01:04:41,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:41,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [334113232] [2022-04-07 01:04:41,099 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:04:41,099 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:04:41,099 INFO L85 PathProgramCache]: Analyzing trace with hash -843920210, now seen corresponding path program 2 times [2022-04-07 01:04:41,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:04:41,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542021677] [2022-04-07 01:04:41,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:04:41,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:04:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:41,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:04:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:41,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:04:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:41,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:04:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:41,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:04:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:41,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:04:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:41,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:04:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:41,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:04:41,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:04:41,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542021677] [2022-04-07 01:04:41,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542021677] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:04:41,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271714237] [2022-04-07 01:04:41,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:04:41,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:04:41,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:04:41,437 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:04:41,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-04-07 01:04:42,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:04:42,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:04:42,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 23 conjunts are in the unsatisfiable core [2022-04-07 01:04:42,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:04:43,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:04:43,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:04:43,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271714237] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:43,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:04:43,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2022-04-07 01:04:43,033 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:04:43,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [334113232] [2022-04-07 01:04:43,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [334113232] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:43,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:04:43,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 01:04:43,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23348447] [2022-04-07 01:04:43,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:04:43,034 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 01:04:43,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:43,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 01:04:43,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-04-07 01:04:43,034 INFO L87 Difference]: Start difference. First operand 5910 states and 8480 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:04:47,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:04:47,365 INFO L93 Difference]: Finished difference Result 6102 states and 8704 transitions. [2022-04-07 01:04:47,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 01:04:47,365 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 68 [2022-04-07 01:04:47,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:04:47,381 INFO L225 Difference]: With dead ends: 6102 [2022-04-07 01:04:47,381 INFO L226 Difference]: Without dead ends: 6084 [2022-04-07 01:04:47,383 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-07 01:04:47,386 INFO L913 BasicCegarLoop]: 3080 mSDtfsCounter, 2655 mSDsluCounter, 18253 mSDsCounter, 0 mSdLazyCounter, 4951 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2660 SdHoareTripleChecker+Valid, 21333 SdHoareTripleChecker+Invalid, 4962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 4951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-04-07 01:04:47,386 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2660 Valid, 21333 Invalid, 4962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 4951 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-04-07 01:04:47,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6084 states. [2022-04-07 01:04:48,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6084 to 5939. [2022-04-07 01:04:48,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5939 states, 3967 states have (on average 1.3516511217544744) internal successors, (5362), 4085 states have internal predecessors, (5362), 1568 states have call successors, (1568), 389 states have call predecessors, (1568), 403 states have return successors, (1586), 1531 states have call predecessors, (1586), 1557 states have call successors, (1586) [2022-04-07 01:04:48,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5939 states to 5939 states and 8516 transitions. [2022-04-07 01:04:48,737 INFO L78 Accepts]: Start accepts. Automaton has 5939 states and 8516 transitions. Word has length 68 [2022-04-07 01:04:48,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:04:48,737 INFO L478 AbstractCegarLoop]: Abstraction has 5939 states and 8516 transitions. [2022-04-07 01:04:48,737 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:04:48,737 INFO L276 IsEmpty]: Start isEmpty. Operand 5939 states and 8516 transitions. [2022-04-07 01:04:48,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-04-07 01:04:48,739 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:04:48,739 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:04:48,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-04-07 01:04:48,959 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:04:48,959 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:04:48,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:04:48,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1268963390, now seen corresponding path program 1 times [2022-04-07 01:04:48,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:48,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1088630923] [2022-04-07 01:04:48,963 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:04:48,963 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:04:48,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1268963390, now seen corresponding path program 2 times [2022-04-07 01:04:48,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:04:48,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607650441] [2022-04-07 01:04:48,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:04:48,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:04:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:49,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:04:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:49,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:04:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:49,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:04:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:49,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-07 01:04:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:49,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:04:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:49,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-07 01:04:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:49,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-07 01:04:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:49,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:04:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:49,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:04:49,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:04:49,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607650441] [2022-04-07 01:04:49,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607650441] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:04:49,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283910771] [2022-04-07 01:04:49,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:04:49,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:04:49,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:04:49,265 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:04:49,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-04-07 01:04:50,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:04:50,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:04:50,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-07 01:04:50,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:04:50,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:04:50,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:04:50,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283910771] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:50,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:04:50,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-04-07 01:04:50,716 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:04:50,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1088630923] [2022-04-07 01:04:50,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1088630923] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:50,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:04:50,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 01:04:50,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087927025] [2022-04-07 01:04:50,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:04:50,717 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 01:04:50,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:50,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 01:04:50,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-04-07 01:04:50,717 INFO L87 Difference]: Start difference. First operand 5939 states and 8516 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-07 01:04:52,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:04:52,094 INFO L93 Difference]: Finished difference Result 5988 states and 8574 transitions. [2022-04-07 01:04:52,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 01:04:52,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2022-04-07 01:04:52,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:04:52,115 INFO L225 Difference]: With dead ends: 5988 [2022-04-07 01:04:52,115 INFO L226 Difference]: Without dead ends: 5984 [2022-04-07 01:04:52,117 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-04-07 01:04:52,117 INFO L913 BasicCegarLoop]: 2726 mSDtfsCounter, 2654 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2654 SdHoareTripleChecker+Valid, 2800 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:04:52,117 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2654 Valid, 2800 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 01:04:52,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5984 states. [2022-04-07 01:04:53,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5984 to 5937. [2022-04-07 01:04:53,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5937 states, 3967 states have (on average 1.351146962440131) internal successors, (5360), 4083 states have internal predecessors, (5360), 1566 states have call successors, (1566), 389 states have call predecessors, (1566), 403 states have return successors, (1586), 1531 states have call predecessors, (1586), 1557 states have call successors, (1586) [2022-04-07 01:04:53,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5937 states to 5937 states and 8512 transitions. [2022-04-07 01:04:53,450 INFO L78 Accepts]: Start accepts. Automaton has 5937 states and 8512 transitions. Word has length 74 [2022-04-07 01:04:53,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:04:53,451 INFO L478 AbstractCegarLoop]: Abstraction has 5937 states and 8512 transitions. [2022-04-07 01:04:53,451 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-07 01:04:53,451 INFO L276 IsEmpty]: Start isEmpty. Operand 5937 states and 8512 transitions. [2022-04-07 01:04:53,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-07 01:04:53,452 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:04:53,452 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:04:53,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-04-07 01:04:53,667 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-04-07 01:04:53,667 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:04:53,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:04:53,668 INFO L85 PathProgramCache]: Analyzing trace with hash 961252362, now seen corresponding path program 1 times [2022-04-07 01:04:53,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:53,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1688844997] [2022-04-07 01:04:53,670 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:04:53,670 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:04:53,670 INFO L85 PathProgramCache]: Analyzing trace with hash 961252362, now seen corresponding path program 2 times [2022-04-07 01:04:53,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:04:53,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179169199] [2022-04-07 01:04:53,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:04:53,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:04:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:54,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:04:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:54,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:04:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:54,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:04:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:54,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:04:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:54,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:04:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:54,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:04:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:54,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:04:54,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:04:54,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179169199] [2022-04-07 01:04:54,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179169199] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:04:54,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320255172] [2022-04-07 01:04:54,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:04:54,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:04:54,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:04:54,288 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:04:54,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-04-07 01:04:55,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:04:55,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:04:55,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 1614 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-07 01:04:55,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:04:55,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:04:55,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:04:55,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320255172] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:55,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:04:55,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2022-04-07 01:04:55,973 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:04:55,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1688844997] [2022-04-07 01:04:55,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1688844997] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:55,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:04:55,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 01:04:55,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061461891] [2022-04-07 01:04:55,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:04:55,973 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 01:04:55,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:55,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 01:04:55,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-04-07 01:04:55,974 INFO L87 Difference]: Start difference. First operand 5937 states and 8512 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:04:57,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:04:57,563 INFO L93 Difference]: Finished difference Result 5957 states and 8534 transitions. [2022-04-07 01:04:57,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-07 01:04:57,563 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 69 [2022-04-07 01:04:57,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:04:57,574 INFO L225 Difference]: With dead ends: 5957 [2022-04-07 01:04:57,574 INFO L226 Difference]: Without dead ends: 5939 [2022-04-07 01:04:57,575 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-04-07 01:04:57,575 INFO L913 BasicCegarLoop]: 2730 mSDtfsCounter, 12 mSDsluCounter, 18963 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 21693 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:04:57,575 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 21693 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 01:04:57,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5939 states. [2022-04-07 01:04:58,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5939 to 5894. [2022-04-07 01:04:58,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5894 states, 3933 states have (on average 1.3526570048309179) internal successors, (5320), 4046 states have internal predecessors, (5320), 1562 states have call successors, (1562), 386 states have call predecessors, (1562), 398 states have return successors, (1577), 1526 states have call predecessors, (1577), 1553 states have call successors, (1577) [2022-04-07 01:04:58,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5894 states to 5894 states and 8459 transitions. [2022-04-07 01:04:58,922 INFO L78 Accepts]: Start accepts. Automaton has 5894 states and 8459 transitions. Word has length 69 [2022-04-07 01:04:58,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:04:58,922 INFO L478 AbstractCegarLoop]: Abstraction has 5894 states and 8459 transitions. [2022-04-07 01:04:58,922 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:04:58,923 INFO L276 IsEmpty]: Start isEmpty. Operand 5894 states and 8459 transitions. [2022-04-07 01:04:58,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-07 01:04:58,924 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:04:58,924 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:04:58,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-04-07 01:04:59,147 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-04-07 01:04:59,147 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:04:59,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:04:59,148 INFO L85 PathProgramCache]: Analyzing trace with hash -978476308, now seen corresponding path program 1 times [2022-04-07 01:04:59,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:59,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1452229091] [2022-04-07 01:04:59,150 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:04:59,150 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:04:59,150 INFO L85 PathProgramCache]: Analyzing trace with hash -978476308, now seen corresponding path program 2 times [2022-04-07 01:04:59,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:04:59,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652186939] [2022-04-07 01:04:59,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:04:59,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:04:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:59,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:04:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:59,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:04:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:59,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:04:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:59,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:04:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:59,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:04:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:59,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:04:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:04:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:04:59,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:04:59,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652186939] [2022-04-07 01:04:59,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652186939] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:59,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:04:59,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 01:04:59,618 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:04:59,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1452229091] [2022-04-07 01:04:59,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1452229091] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:04:59,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:04:59,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 01:04:59,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737783752] [2022-04-07 01:04:59,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:04:59,618 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-07 01:04:59,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:04:59,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-07 01:04:59,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-04-07 01:04:59,619 INFO L87 Difference]: Start difference. First operand 5894 states and 8459 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-07 01:05:06,148 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:07,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:10,239 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:12,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:14,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:22,227 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:24,254 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:26,036 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:05:46,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:05:46,682 INFO L93 Difference]: Finished difference Result 7973 states and 11561 transitions. [2022-04-07 01:05:46,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-07 01:05:46,683 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 69 [2022-04-07 01:05:46,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:05:46,718 INFO L225 Difference]: With dead ends: 7973 [2022-04-07 01:05:46,718 INFO L226 Difference]: Without dead ends: 7967 [2022-04-07 01:05:46,720 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2022-04-07 01:05:46,722 INFO L913 BasicCegarLoop]: 3395 mSDtfsCounter, 7079 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 9749 mSolverCounterSat, 5729 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7109 SdHoareTripleChecker+Valid, 3969 SdHoareTripleChecker+Invalid, 15482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5729 IncrementalHoareTripleChecker+Valid, 9749 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.6s IncrementalHoareTripleChecker+Time [2022-04-07 01:05:46,724 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7109 Valid, 3969 Invalid, 15482 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5729 Valid, 9749 Invalid, 4 Unknown, 0 Unchecked, 42.6s Time] [2022-04-07 01:05:46,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7967 states. [2022-04-07 01:05:48,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7967 to 5897. [2022-04-07 01:05:48,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5897 states, 3936 states have (on average 1.3521341463414633) internal successors, (5322), 4049 states have internal predecessors, (5322), 1562 states have call successors, (1562), 386 states have call predecessors, (1562), 398 states have return successors, (1577), 1526 states have call predecessors, (1577), 1553 states have call successors, (1577) [2022-04-07 01:05:48,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5897 states to 5897 states and 8461 transitions. [2022-04-07 01:05:48,629 INFO L78 Accepts]: Start accepts. Automaton has 5897 states and 8461 transitions. Word has length 69 [2022-04-07 01:05:48,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:05:48,629 INFO L478 AbstractCegarLoop]: Abstraction has 5897 states and 8461 transitions. [2022-04-07 01:05:48,629 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-07 01:05:48,630 INFO L276 IsEmpty]: Start isEmpty. Operand 5897 states and 8461 transitions. [2022-04-07 01:05:48,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-07 01:05:48,631 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:05:48,631 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:05:48,631 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-04-07 01:05:48,631 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:05:48,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:05:48,632 INFO L85 PathProgramCache]: Analyzing trace with hash -978199478, now seen corresponding path program 1 times [2022-04-07 01:05:48,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:05:48,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [856995597] [2022-04-07 01:05:48,634 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:05:48,634 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:05:48,634 INFO L85 PathProgramCache]: Analyzing trace with hash -978199478, now seen corresponding path program 2 times [2022-04-07 01:05:48,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:05:48,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862427787] [2022-04-07 01:05:48,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:05:48,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:05:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:05:48,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:05:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:05:48,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:05:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:05:48,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:05:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:05:48,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:05:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:05:48,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:05:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:05:48,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 01:05:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:05:49,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:05:49,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:05:49,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862427787] [2022-04-07 01:05:49,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862427787] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:05:49,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879071941] [2022-04-07 01:05:49,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:05:49,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:05:49,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:05:49,004 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:05:49,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-04-07 01:05:50,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:05:50,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:05:50,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-07 01:05:50,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:05:50,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:05:50,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:05:50,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879071941] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:05:50,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:05:50,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2022-04-07 01:05:50,663 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:05:50,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [856995597] [2022-04-07 01:05:50,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [856995597] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:05:50,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:05:50,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 01:05:50,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147337334] [2022-04-07 01:05:50,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:05:50,664 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 01:05:50,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:05:50,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 01:05:50,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-04-07 01:05:50,664 INFO L87 Difference]: Start difference. First operand 5897 states and 8461 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:05:52,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:05:52,827 INFO L93 Difference]: Finished difference Result 7206 states and 10352 transitions. [2022-04-07 01:05:52,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-07 01:05:52,828 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 69 [2022-04-07 01:05:52,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:05:52,845 INFO L225 Difference]: With dead ends: 7206 [2022-04-07 01:05:52,845 INFO L226 Difference]: Without dead ends: 5903 [2022-04-07 01:05:52,850 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-04-07 01:05:52,851 INFO L913 BasicCegarLoop]: 2729 mSDtfsCounter, 8 mSDsluCounter, 21661 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 24390 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-07 01:05:52,851 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 24390 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-07 01:05:52,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2022-04-07 01:05:54,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 5887. [2022-04-07 01:05:54,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5887 states, 3928 states have (on average 1.3520875763747455) internal successors, (5311), 4040 states have internal predecessors, (5311), 1561 states have call successors, (1561), 386 states have call predecessors, (1561), 397 states have return successors, (1573), 1525 states have call predecessors, (1573), 1552 states have call successors, (1573) [2022-04-07 01:05:54,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5887 states to 5887 states and 8445 transitions. [2022-04-07 01:05:54,574 INFO L78 Accepts]: Start accepts. Automaton has 5887 states and 8445 transitions. Word has length 69 [2022-04-07 01:05:54,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:05:54,574 INFO L478 AbstractCegarLoop]: Abstraction has 5887 states and 8445 transitions. [2022-04-07 01:05:54,574 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:05:54,574 INFO L276 IsEmpty]: Start isEmpty. Operand 5887 states and 8445 transitions. [2022-04-07 01:05:54,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-07 01:05:54,576 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:05:54,576 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:05:54,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-04-07 01:05:54,787 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-04-07 01:05:54,787 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:05:54,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:05:54,788 INFO L85 PathProgramCache]: Analyzing trace with hash 635026972, now seen corresponding path program 1 times [2022-04-07 01:05:54,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:05:54,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1238234474] [2022-04-07 01:05:54,796 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:05:54,796 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:05:54,796 INFO L85 PathProgramCache]: Analyzing trace with hash 635026972, now seen corresponding path program 2 times [2022-04-07 01:05:54,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:05:54,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839739044] [2022-04-07 01:05:54,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:05:54,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:05:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:05:55,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:05:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:05:55,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:05:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:05:55,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:05:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:05:55,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:05:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:05:55,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:05:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:05:55,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-04-07 01:05:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:05:55,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:05:55,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:05:55,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839739044] [2022-04-07 01:05:55,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839739044] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:05:55,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610055849] [2022-04-07 01:05:55,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:05:55,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:05:55,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:05:55,209 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:05:55,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-04-07 01:05:56,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:05:56,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:05:56,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 23 conjunts are in the unsatisfiable core [2022-04-07 01:05:56,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:05:56,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:05:56,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:05:56,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610055849] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:05:56,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:05:56,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2022-04-07 01:05:56,931 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:05:56,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1238234474] [2022-04-07 01:05:56,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1238234474] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:05:56,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:05:56,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 01:05:56,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602202799] [2022-04-07 01:05:56,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:05:56,932 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 01:05:56,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:05:56,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 01:05:56,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-04-07 01:05:56,932 INFO L87 Difference]: Start difference. First operand 5887 states and 8445 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 9 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:06:02,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:06:02,760 INFO L93 Difference]: Finished difference Result 6081 states and 8669 transitions. [2022-04-07 01:06:02,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 01:06:02,771 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 9 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 69 [2022-04-07 01:06:02,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:06:02,783 INFO L225 Difference]: With dead ends: 6081 [2022-04-07 01:06:02,783 INFO L226 Difference]: Without dead ends: 6063 [2022-04-07 01:06:02,785 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-07 01:06:02,785 INFO L913 BasicCegarLoop]: 3073 mSDtfsCounter, 2647 mSDsluCounter, 18544 mSDsCounter, 0 mSdLazyCounter, 5868 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2651 SdHoareTripleChecker+Valid, 21617 SdHoareTripleChecker+Invalid, 5879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 5868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-04-07 01:06:02,785 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2651 Valid, 21617 Invalid, 5879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 5868 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-04-07 01:06:02,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6063 states. [2022-04-07 01:06:04,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6063 to 5893. [2022-04-07 01:06:04,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5893 states, 3933 states have (on average 1.3516399694889398) internal successors, (5316), 4046 states have internal predecessors, (5316), 1561 states have call successors, (1561), 386 states have call predecessors, (1561), 398 states have return successors, (1575), 1525 states have call predecessors, (1575), 1552 states have call successors, (1575) [2022-04-07 01:06:04,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5893 states to 5893 states and 8452 transitions. [2022-04-07 01:06:04,508 INFO L78 Accepts]: Start accepts. Automaton has 5893 states and 8452 transitions. Word has length 69 [2022-04-07 01:06:04,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:06:04,508 INFO L478 AbstractCegarLoop]: Abstraction has 5893 states and 8452 transitions. [2022-04-07 01:06:04,508 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 9 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:06:04,508 INFO L276 IsEmpty]: Start isEmpty. Operand 5893 states and 8452 transitions. [2022-04-07 01:06:04,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-04-07 01:06:04,510 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:06:04,510 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:06:04,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-04-07 01:06:04,723 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:06:04,723 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:06:04,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:06:04,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1348122222, now seen corresponding path program 1 times [2022-04-07 01:06:04,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:04,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [972579817] [2022-04-07 01:06:04,726 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:06:04,726 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:06:04,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1348122222, now seen corresponding path program 2 times [2022-04-07 01:06:04,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:06:04,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188277191] [2022-04-07 01:06:04,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:06:04,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:06:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:04,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:06:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:05,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:06:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:05,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:06:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:05,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:06:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:05,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:06:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:05,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-04-07 01:06:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:05,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:06:05,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:06:05,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188277191] [2022-04-07 01:06:05,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188277191] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:06:05,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498959367] [2022-04-07 01:06:05,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:06:05,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:06:05,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:06:05,148 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:06:05,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-04-07 01:06:06,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:06:06,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:06:06,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-07 01:06:06,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:06:06,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:06:06,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:06:06,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498959367] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:06,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:06:06,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2022-04-07 01:06:06,860 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:06:06,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [972579817] [2022-04-07 01:06:06,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [972579817] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:06,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:06:06,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 01:06:06,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571284111] [2022-04-07 01:06:06,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:06:06,861 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 01:06:06,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:06,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 01:06:06,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-04-07 01:06:06,861 INFO L87 Difference]: Start difference. First operand 5893 states and 8452 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:06:08,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:06:08,888 INFO L93 Difference]: Finished difference Result 5933 states and 8498 transitions. [2022-04-07 01:06:08,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-07 01:06:08,889 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 70 [2022-04-07 01:06:08,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:06:08,907 INFO L225 Difference]: With dead ends: 5933 [2022-04-07 01:06:08,907 INFO L226 Difference]: Without dead ends: 5915 [2022-04-07 01:06:08,910 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-04-07 01:06:08,911 INFO L913 BasicCegarLoop]: 2722 mSDtfsCounter, 8 mSDsluCounter, 21606 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 24328 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-07 01:06:08,911 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 24328 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-07 01:06:08,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5915 states. [2022-04-07 01:06:10,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5915 to 5893. [2022-04-07 01:06:10,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5893 states, 3933 states have (on average 1.3516399694889398) internal successors, (5316), 4046 states have internal predecessors, (5316), 1561 states have call successors, (1561), 386 states have call predecessors, (1561), 398 states have return successors, (1575), 1525 states have call predecessors, (1575), 1552 states have call successors, (1575) [2022-04-07 01:06:10,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5893 states to 5893 states and 8452 transitions. [2022-04-07 01:06:10,756 INFO L78 Accepts]: Start accepts. Automaton has 5893 states and 8452 transitions. Word has length 70 [2022-04-07 01:06:10,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:06:10,756 INFO L478 AbstractCegarLoop]: Abstraction has 5893 states and 8452 transitions. [2022-04-07 01:06:10,756 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:06:10,756 INFO L276 IsEmpty]: Start isEmpty. Operand 5893 states and 8452 transitions. [2022-04-07 01:06:10,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-04-07 01:06:10,758 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:06:10,758 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:06:10,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-04-07 01:06:10,967 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-04-07 01:06:10,967 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:06:10,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:06:10,968 INFO L85 PathProgramCache]: Analyzing trace with hash -591329618, now seen corresponding path program 1 times [2022-04-07 01:06:10,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:10,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [200948985] [2022-04-07 01:06:10,970 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:06:10,970 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:06:10,970 INFO L85 PathProgramCache]: Analyzing trace with hash -591329618, now seen corresponding path program 2 times [2022-04-07 01:06:10,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:06:10,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604465738] [2022-04-07 01:06:10,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:06:10,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:06:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:11,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:06:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:11,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:06:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:11,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:06:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:11,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:06:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:11,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:06:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:11,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-04-07 01:06:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:11,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:06:11,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:06:11,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604465738] [2022-04-07 01:06:11,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604465738] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:06:11,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503308932] [2022-04-07 01:06:11,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:06:11,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:06:11,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:06:11,339 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:06:11,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-04-07 01:06:12,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:06:12,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:06:12,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-07 01:06:12,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:06:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:06:13,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:06:13,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503308932] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:13,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:06:13,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2022-04-07 01:06:13,001 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:06:13,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [200948985] [2022-04-07 01:06:13,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [200948985] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:13,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:06:13,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 01:06:13,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987703888] [2022-04-07 01:06:13,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:06:13,002 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 01:06:13,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:13,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 01:06:13,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-04-07 01:06:13,002 INFO L87 Difference]: Start difference. First operand 5893 states and 8452 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:06:15,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:06:15,154 INFO L93 Difference]: Finished difference Result 5916 states and 8477 transitions. [2022-04-07 01:06:15,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-07 01:06:15,154 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 70 [2022-04-07 01:06:15,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:06:15,170 INFO L225 Difference]: With dead ends: 5916 [2022-04-07 01:06:15,170 INFO L226 Difference]: Without dead ends: 5881 [2022-04-07 01:06:15,173 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-04-07 01:06:15,178 INFO L913 BasicCegarLoop]: 2721 mSDtfsCounter, 8 mSDsluCounter, 21602 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 24323 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-07 01:06:15,179 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 24323 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-07 01:06:15,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5881 states. [2022-04-07 01:06:16,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5881 to 5865. [2022-04-07 01:06:16,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5865 states, 3911 states have (on average 1.3531066223472257) internal successors, (5292), 4023 states have internal predecessors, (5292), 1558 states have call successors, (1558), 384 states have call predecessors, (1558), 395 states have return successors, (1570), 1522 states have call predecessors, (1570), 1549 states have call successors, (1570) [2022-04-07 01:06:16,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5865 states to 5865 states and 8420 transitions. [2022-04-07 01:06:16,906 INFO L78 Accepts]: Start accepts. Automaton has 5865 states and 8420 transitions. Word has length 70 [2022-04-07 01:06:16,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:06:16,906 INFO L478 AbstractCegarLoop]: Abstraction has 5865 states and 8420 transitions. [2022-04-07 01:06:16,906 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 01:06:16,906 INFO L276 IsEmpty]: Start isEmpty. Operand 5865 states and 8420 transitions. [2022-04-07 01:06:16,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-04-07 01:06:16,909 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:06:16,909 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:06:16,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-04-07 01:06:17,127 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-04-07 01:06:17,127 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:06:17,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:06:17,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1578229099, now seen corresponding path program 1 times [2022-04-07 01:06:17,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:17,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [761832104] [2022-04-07 01:06:17,130 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:06:17,130 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:06:17,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1578229099, now seen corresponding path program 2 times [2022-04-07 01:06:17,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:06:17,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975187769] [2022-04-07 01:06:17,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:06:17,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:06:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:17,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:06:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:17,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:06:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:17,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:06:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:17,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:06:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:17,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:06:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:17,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-07 01:06:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:17,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-07 01:06:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:17,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-07 01:06:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:06:17,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:06:17,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975187769] [2022-04-07 01:06:17,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975187769] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:06:17,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303030] [2022-04-07 01:06:17,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:06:17,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:06:17,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:06:17,468 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:06:17,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-04-07 01:06:18,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:06:18,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:06:18,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-07 01:06:18,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:06:19,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:06:19,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:06:19,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303030] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:19,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:06:19,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-04-07 01:06:19,048 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:06:19,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [761832104] [2022-04-07 01:06:19,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [761832104] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:19,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:06:19,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 01:06:19,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030176892] [2022-04-07 01:06:19,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:06:19,049 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 01:06:19,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:19,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 01:06:19,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-07 01:06:19,051 INFO L87 Difference]: Start difference. First operand 5865 states and 8420 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-04-07 01:06:21,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:06:21,027 INFO L93 Difference]: Finished difference Result 8384 states and 12093 transitions. [2022-04-07 01:06:21,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 01:06:21,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 76 [2022-04-07 01:06:21,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:06:21,042 INFO L225 Difference]: With dead ends: 8384 [2022-04-07 01:06:21,043 INFO L226 Difference]: Without dead ends: 5845 [2022-04-07 01:06:21,051 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-07 01:06:21,051 INFO L913 BasicCegarLoop]: 2696 mSDtfsCounter, 19 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 5334 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-07 01:06:21,052 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 5334 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-07 01:06:21,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5845 states. [2022-04-07 01:06:22,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5845 to 5845. [2022-04-07 01:06:22,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5845 states, 3899 states have (on average 1.352911002821236) internal successors, (5275), 4009 states have internal predecessors, (5275), 1554 states have call successors, (1554), 382 states have call predecessors, (1554), 391 states have return successors, (1566), 1518 states have call predecessors, (1566), 1547 states have call successors, (1566) [2022-04-07 01:06:22,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5845 states to 5845 states and 8395 transitions. [2022-04-07 01:06:22,799 INFO L78 Accepts]: Start accepts. Automaton has 5845 states and 8395 transitions. Word has length 76 [2022-04-07 01:06:22,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:06:22,800 INFO L478 AbstractCegarLoop]: Abstraction has 5845 states and 8395 transitions. [2022-04-07 01:06:22,800 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-04-07 01:06:22,800 INFO L276 IsEmpty]: Start isEmpty. Operand 5845 states and 8395 transitions. [2022-04-07 01:06:22,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-04-07 01:06:22,802 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:06:22,802 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:06:22,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-04-07 01:06:23,020 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:06:23,021 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:06:23,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:06:23,021 INFO L85 PathProgramCache]: Analyzing trace with hash -902471083, now seen corresponding path program 1 times [2022-04-07 01:06:23,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:23,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1239129001] [2022-04-07 01:06:23,024 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:06:23,024 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:06:23,024 INFO L85 PathProgramCache]: Analyzing trace with hash -902471083, now seen corresponding path program 2 times [2022-04-07 01:06:23,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:06:23,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834701339] [2022-04-07 01:06:23,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:06:23,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:06:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:23,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:06:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:23,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:06:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:23,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:06:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:23,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-07 01:06:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:23,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:06:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:23,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:06:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:23,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:06:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:23,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 01:06:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:23,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:06:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:23,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-07 01:06:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:23,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:06:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:23,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:06:23,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:06:23,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834701339] [2022-04-07 01:06:23,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834701339] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:06:23,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739477677] [2022-04-07 01:06:23,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:06:23,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:06:23,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:06:23,444 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:06:23,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-04-07 01:06:24,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:06:24,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:06:24,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-07 01:06:24,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:06:25,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:06:25,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:06:25,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739477677] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:25,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:06:25,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-04-07 01:06:25,135 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:06:25,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1239129001] [2022-04-07 01:06:25,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1239129001] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:25,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:06:25,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 01:06:25,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099418993] [2022-04-07 01:06:25,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:06:25,135 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 01:06:25,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:25,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 01:06:25,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-04-07 01:06:25,136 INFO L87 Difference]: Start difference. First operand 5845 states and 8395 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 2 states have call successors, (11) [2022-04-07 01:06:27,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:06:27,191 INFO L93 Difference]: Finished difference Result 5860 states and 8412 transitions. [2022-04-07 01:06:27,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 01:06:27,192 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 2 states have call successors, (11) Word has length 78 [2022-04-07 01:06:27,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:06:27,209 INFO L225 Difference]: With dead ends: 5860 [2022-04-07 01:06:27,209 INFO L226 Difference]: Without dead ends: 5827 [2022-04-07 01:06:27,212 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-04-07 01:06:27,213 INFO L913 BasicCegarLoop]: 2677 mSDtfsCounter, 8 mSDsluCounter, 24060 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26737 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-07 01:06:27,228 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26737 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-07 01:06:27,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5827 states. [2022-04-07 01:06:29,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5827 to 5827. [2022-04-07 01:06:29,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5827 states, 3888 states have (on average 1.3536522633744856) internal successors, (5263), 3998 states have internal predecessors, (5263), 1549 states have call successors, (1549), 380 states have call predecessors, (1549), 389 states have return successors, (1561), 1513 states have call predecessors, (1561), 1542 states have call successors, (1561) [2022-04-07 01:06:29,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5827 states to 5827 states and 8373 transitions. [2022-04-07 01:06:29,060 INFO L78 Accepts]: Start accepts. Automaton has 5827 states and 8373 transitions. Word has length 78 [2022-04-07 01:06:29,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:06:29,060 INFO L478 AbstractCegarLoop]: Abstraction has 5827 states and 8373 transitions. [2022-04-07 01:06:29,060 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 2 states have call successors, (11) [2022-04-07 01:06:29,060 INFO L276 IsEmpty]: Start isEmpty. Operand 5827 states and 8373 transitions. [2022-04-07 01:06:29,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-04-07 01:06:29,062 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:06:29,062 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:06:29,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-04-07 01:06:29,285 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-04-07 01:06:29,285 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:06:29,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:06:29,286 INFO L85 PathProgramCache]: Analyzing trace with hash -687831844, now seen corresponding path program 1 times [2022-04-07 01:06:29,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:29,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [962052487] [2022-04-07 01:06:29,288 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:06:29,288 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:06:29,288 INFO L85 PathProgramCache]: Analyzing trace with hash -687831844, now seen corresponding path program 2 times [2022-04-07 01:06:29,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:06:29,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963009881] [2022-04-07 01:06:29,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:06:29,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:06:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:29,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:06:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:29,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:06:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:29,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:06:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:29,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-07 01:06:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:29,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 01:06:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:29,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:06:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:29,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:06:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:29,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:06:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:29,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-07 01:06:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:29,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:06:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:29,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:06:29,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:06:29,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963009881] [2022-04-07 01:06:29,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963009881] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:06:29,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914119429] [2022-04-07 01:06:29,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:06:29,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:06:29,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:06:29,643 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:06:29,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-04-07 01:06:31,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:06:31,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:06:31,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-07 01:06:31,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:06:31,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:06:31,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:06:31,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914119429] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:31,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:06:31,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-04-07 01:06:31,277 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:06:31,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [962052487] [2022-04-07 01:06:31,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [962052487] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:31,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:06:31,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 01:06:31,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205485528] [2022-04-07 01:06:31,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:06:31,278 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 01:06:31,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:31,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 01:06:31,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-04-07 01:06:31,278 INFO L87 Difference]: Start difference. First operand 5827 states and 8373 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-04-07 01:06:34,374 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 [] [2022-04-07 01:06:36,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:06:36,263 INFO L93 Difference]: Finished difference Result 5849 states and 8399 transitions. [2022-04-07 01:06:36,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 01:06:36,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2022-04-07 01:06:36,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:06:36,275 INFO L225 Difference]: With dead ends: 5849 [2022-04-07 01:06:36,275 INFO L226 Difference]: Without dead ends: 5827 [2022-04-07 01:06:36,277 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:06:36,277 INFO L913 BasicCegarLoop]: 2679 mSDtfsCounter, 5 mSDsluCounter, 10648 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 13327 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-04-07 01:06:36,277 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 13327 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-04-07 01:06:36,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5827 states. [2022-04-07 01:06:37,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5827 to 5827. [2022-04-07 01:06:37,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5827 states, 3888 states have (on average 1.352880658436214) internal successors, (5260), 3998 states have internal predecessors, (5260), 1549 states have call successors, (1549), 380 states have call predecessors, (1549), 389 states have return successors, (1561), 1513 states have call predecessors, (1561), 1542 states have call successors, (1561) [2022-04-07 01:06:37,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5827 states to 5827 states and 8370 transitions. [2022-04-07 01:06:37,962 INFO L78 Accepts]: Start accepts. Automaton has 5827 states and 8370 transitions. Word has length 87 [2022-04-07 01:06:37,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:06:37,963 INFO L478 AbstractCegarLoop]: Abstraction has 5827 states and 8370 transitions. [2022-04-07 01:06:37,963 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-04-07 01:06:37,963 INFO L276 IsEmpty]: Start isEmpty. Operand 5827 states and 8370 transitions. [2022-04-07 01:06:37,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-04-07 01:06:37,965 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:06:37,965 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:06:37,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-04-07 01:06:38,171 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:06:38,171 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:06:38,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:06:38,172 INFO L85 PathProgramCache]: Analyzing trace with hash 186968625, now seen corresponding path program 1 times [2022-04-07 01:06:38,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:38,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [919565961] [2022-04-07 01:06:38,174 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:06:38,174 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:06:38,174 INFO L85 PathProgramCache]: Analyzing trace with hash 186968625, now seen corresponding path program 2 times [2022-04-07 01:06:38,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:06:38,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416837753] [2022-04-07 01:06:38,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:06:38,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:06:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:38,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:06:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:38,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:06:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:38,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:06:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:38,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:06:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:38,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 01:06:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:38,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:06:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:38,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-07 01:06:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:38,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-07 01:06:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:38,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-07 01:06:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:38,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:06:38,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:06:38,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416837753] [2022-04-07 01:06:38,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416837753] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:06:38,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220590642] [2022-04-07 01:06:38,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:06:38,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:06:38,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:06:38,537 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:06:38,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-04-07 01:06:40,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:06:40,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:06:40,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 2096 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-07 01:06:40,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:06:40,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:06:40,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:06:40,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220590642] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:40,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:06:40,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-04-07 01:06:40,165 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:06:40,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [919565961] [2022-04-07 01:06:40,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [919565961] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:40,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:06:40,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 01:06:40,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976974331] [2022-04-07 01:06:40,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:06:40,175 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 01:06:40,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:40,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 01:06:40,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-07 01:06:40,176 INFO L87 Difference]: Start difference. First operand 5827 states and 8370 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 01:06:41,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:06:41,516 INFO L93 Difference]: Finished difference Result 6752 states and 9657 transitions. [2022-04-07 01:06:41,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 01:06:41,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 86 [2022-04-07 01:06:41,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:06:41,529 INFO L225 Difference]: With dead ends: 6752 [2022-04-07 01:06:41,529 INFO L226 Difference]: Without dead ends: 4202 [2022-04-07 01:06:41,537 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-07 01:06:41,537 INFO L913 BasicCegarLoop]: 3775 mSDtfsCounter, 1983 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 5562 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:06:41,537 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1983 Valid, 5562 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 01:06:41,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4202 states. [2022-04-07 01:06:42,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4202 to 4084. [2022-04-07 01:06:42,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4084 states, 2708 states have (on average 1.3378877400295421) internal successors, (3623), 2781 states have internal predecessors, (3623), 1089 states have call successors, (1089), 279 states have call predecessors, (1089), 286 states have return successors, (1095), 1068 states have call predecessors, (1095), 1082 states have call successors, (1095) [2022-04-07 01:06:42,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4084 states to 4084 states and 5807 transitions. [2022-04-07 01:06:42,814 INFO L78 Accepts]: Start accepts. Automaton has 4084 states and 5807 transitions. Word has length 86 [2022-04-07 01:06:42,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:06:42,814 INFO L478 AbstractCegarLoop]: Abstraction has 4084 states and 5807 transitions. [2022-04-07 01:06:42,814 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 01:06:42,815 INFO L276 IsEmpty]: Start isEmpty. Operand 4084 states and 5807 transitions. [2022-04-07 01:06:42,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-04-07 01:06:42,817 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:06:42,817 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:06:42,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-04-07 01:06:43,039 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:06:43,040 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:06:43,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:06:43,040 INFO L85 PathProgramCache]: Analyzing trace with hash 889808946, now seen corresponding path program 1 times [2022-04-07 01:06:43,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:43,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [437415475] [2022-04-07 01:06:43,045 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:06:43,045 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:06:43,045 INFO L85 PathProgramCache]: Analyzing trace with hash 889808946, now seen corresponding path program 2 times [2022-04-07 01:06:43,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:06:43,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344658968] [2022-04-07 01:06:43,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:06:43,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:06:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:43,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:06:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:43,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:06:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:43,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:06:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:43,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-07 01:06:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:43,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 01:06:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:43,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:06:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:43,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-07 01:06:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:43,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:06:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:43,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-07 01:06:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:43,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:06:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:43,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:06:43,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:06:43,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344658968] [2022-04-07 01:06:43,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344658968] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:06:43,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333666610] [2022-04-07 01:06:43,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:06:43,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:06:43,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:06:43,484 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:06:43,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-04-07 01:06:45,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:06:45,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:06:45,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-07 01:06:45,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:06:45,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:06:45,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:06:45,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333666610] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:45,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:06:45,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-04-07 01:06:45,229 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:06:45,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [437415475] [2022-04-07 01:06:45,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [437415475] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:45,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:06:45,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 01:06:45,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865013613] [2022-04-07 01:06:45,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:06:45,230 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 01:06:45,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:45,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 01:06:45,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-04-07 01:06:45,230 INFO L87 Difference]: Start difference. First operand 4084 states and 5807 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-04-07 01:06:46,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:06:46,803 INFO L93 Difference]: Finished difference Result 4113 states and 5842 transitions. [2022-04-07 01:06:46,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-07 01:06:46,804 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2022-04-07 01:06:46,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:06:46,814 INFO L225 Difference]: With dead ends: 4113 [2022-04-07 01:06:46,814 INFO L226 Difference]: Without dead ends: 3669 [2022-04-07 01:06:46,816 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:06:46,818 INFO L913 BasicCegarLoop]: 2672 mSDtfsCounter, 17 mSDsluCounter, 10621 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 13293 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-07 01:06:46,818 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 13293 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-07 01:06:46,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3669 states. [2022-04-07 01:06:47,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3669 to 3642. [2022-04-07 01:06:47,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 2440 states have (on average 1.3364754098360656) internal successors, (3261), 2508 states have internal predecessors, (3261), 934 states have call successors, (934), 261 states have call predecessors, (934), 267 states have return successors, (939), 914 states have call predecessors, (939), 927 states have call successors, (939) [2022-04-07 01:06:47,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 5134 transitions. [2022-04-07 01:06:47,982 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 5134 transitions. Word has length 88 [2022-04-07 01:06:48,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:06:48,003 INFO L478 AbstractCegarLoop]: Abstraction has 3642 states and 5134 transitions. [2022-04-07 01:06:48,003 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-04-07 01:06:48,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 5134 transitions. [2022-04-07 01:06:48,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-04-07 01:06:48,005 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:06:48,005 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:06:48,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-04-07 01:06:48,218 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-04-07 01:06:48,218 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:06:48,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:06:48,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1084992937, now seen corresponding path program 1 times [2022-04-07 01:06:48,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:48,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [775315422] [2022-04-07 01:06:48,221 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:06:48,221 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:06:48,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1084992937, now seen corresponding path program 2 times [2022-04-07 01:06:48,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:06:48,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029283710] [2022-04-07 01:06:48,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:06:48,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:06:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:48,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:06:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:48,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:06:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:48,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:06:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:48,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-07 01:06:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:48,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 01:06:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:48,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:06:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:48,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-07 01:06:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:06:48,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:06:48,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029283710] [2022-04-07 01:06:48,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029283710] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:06:48,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535569914] [2022-04-07 01:06:48,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:06:48,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:06:48,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:06:48,580 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:06:48,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-04-07 01:06:50,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:06:50,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:06:50,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-07 01:06:50,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:06:50,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:06:50,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:06:50,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535569914] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:50,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:06:50,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-04-07 01:06:50,263 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:06:50,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [775315422] [2022-04-07 01:06:50,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [775315422] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:50,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:06:50,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 01:06:50,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949509728] [2022-04-07 01:06:50,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:06:50,263 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 01:06:50,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:50,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 01:06:50,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-04-07 01:06:50,264 INFO L87 Difference]: Start difference. First operand 3642 states and 5134 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-07 01:06:51,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:06:51,597 INFO L93 Difference]: Finished difference Result 3701 states and 5204 transitions. [2022-04-07 01:06:51,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-07 01:06:51,598 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 82 [2022-04-07 01:06:51,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:06:51,606 INFO L225 Difference]: With dead ends: 3701 [2022-04-07 01:06:51,607 INFO L226 Difference]: Without dead ends: 3654 [2022-04-07 01:06:51,608 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:06:51,608 INFO L913 BasicCegarLoop]: 2509 mSDtfsCounter, 5 mSDsluCounter, 10010 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 12519 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:06:51,608 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 12519 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 01:06:51,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2022-04-07 01:06:52,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 3647. [2022-04-07 01:06:52,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3647 states, 2444 states have (on average 1.335924713584288) internal successors, (3265), 2512 states have internal predecessors, (3265), 934 states have call successors, (934), 261 states have call predecessors, (934), 268 states have return successors, (940), 915 states have call predecessors, (940), 927 states have call successors, (940) [2022-04-07 01:06:52,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3647 states to 3647 states and 5139 transitions. [2022-04-07 01:06:52,792 INFO L78 Accepts]: Start accepts. Automaton has 3647 states and 5139 transitions. Word has length 82 [2022-04-07 01:06:52,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:06:52,793 INFO L478 AbstractCegarLoop]: Abstraction has 3647 states and 5139 transitions. [2022-04-07 01:06:52,793 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-07 01:06:52,793 INFO L276 IsEmpty]: Start isEmpty. Operand 3647 states and 5139 transitions. [2022-04-07 01:06:52,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-04-07 01:06:52,794 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:06:52,794 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:06:52,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-04-07 01:06:53,003 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-04-07 01:06:53,003 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:06:53,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:06:53,003 INFO L85 PathProgramCache]: Analyzing trace with hash -10828563, now seen corresponding path program 1 times [2022-04-07 01:06:53,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:53,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1396856569] [2022-04-07 01:06:53,005 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:06:53,006 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:06:53,006 INFO L85 PathProgramCache]: Analyzing trace with hash -10828563, now seen corresponding path program 2 times [2022-04-07 01:06:53,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:06:53,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747035860] [2022-04-07 01:06:53,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:06:53,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:06:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:53,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:06:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:53,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:06:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:53,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:06:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:53,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-07 01:06:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:53,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 01:06:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:53,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:06:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:53,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 01:06:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:06:53,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:06:53,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747035860] [2022-04-07 01:06:53,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747035860] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:06:53,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769811937] [2022-04-07 01:06:53,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:06:53,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:06:53,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:06:53,397 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:06:53,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-04-07 01:06:54,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:06:54,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:06:54,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 1753 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-07 01:06:54,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:06:55,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:06:55,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:06:55,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769811937] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:55,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:06:55,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-04-07 01:06:55,099 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:06:55,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1396856569] [2022-04-07 01:06:55,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1396856569] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:55,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:06:55,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 01:06:55,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570442994] [2022-04-07 01:06:55,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:06:55,100 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 01:06:55,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:55,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 01:06:55,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-04-07 01:06:55,100 INFO L87 Difference]: Start difference. First operand 3647 states and 5139 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-07 01:06:56,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:06:56,394 INFO L93 Difference]: Finished difference Result 3761 states and 5272 transitions. [2022-04-07 01:06:56,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 01:06:56,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 85 [2022-04-07 01:06:56,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:06:56,402 INFO L225 Difference]: With dead ends: 3761 [2022-04-07 01:06:56,403 INFO L226 Difference]: Without dead ends: 3658 [2022-04-07 01:06:56,404 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:06:56,404 INFO L913 BasicCegarLoop]: 2511 mSDtfsCounter, 21 mSDsluCounter, 10002 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 12513 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:06:56,404 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 12513 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-07 01:06:56,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3658 states. [2022-04-07 01:06:57,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3658 to 3652. [2022-04-07 01:06:57,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3652 states, 2448 states have (on average 1.335375816993464) internal successors, (3269), 2516 states have internal predecessors, (3269), 934 states have call successors, (934), 261 states have call predecessors, (934), 269 states have return successors, (941), 916 states have call predecessors, (941), 927 states have call successors, (941) [2022-04-07 01:06:57,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 5144 transitions. [2022-04-07 01:06:57,583 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 5144 transitions. Word has length 85 [2022-04-07 01:06:57,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:06:57,583 INFO L478 AbstractCegarLoop]: Abstraction has 3652 states and 5144 transitions. [2022-04-07 01:06:57,583 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-07 01:06:57,583 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 5144 transitions. [2022-04-07 01:06:57,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-04-07 01:06:57,585 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:06:57,585 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:06:57,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-04-07 01:06:57,807 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-04-07 01:06:57,807 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:06:57,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:06:57,808 INFO L85 PathProgramCache]: Analyzing trace with hash -762410768, now seen corresponding path program 1 times [2022-04-07 01:06:57,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:57,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1283284695] [2022-04-07 01:06:57,810 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:06:57,810 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:06:57,810 INFO L85 PathProgramCache]: Analyzing trace with hash -762410768, now seen corresponding path program 2 times [2022-04-07 01:06:57,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:06:57,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523164905] [2022-04-07 01:06:57,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:06:57,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:06:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:58,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:06:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:58,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:06:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:58,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:06:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:58,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:06:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:58,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:06:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:58,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:06:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:58,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:06:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:58,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 01:06:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:58,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-07 01:06:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:58,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:06:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:58,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-07 01:06:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:58,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:06:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:06:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:06:58,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:06:58,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523164905] [2022-04-07 01:06:58,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523164905] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:06:58,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224858954] [2022-04-07 01:06:58,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:06:58,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:06:58,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:06:58,178 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:06:58,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-04-07 01:06:59,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:06:59,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:06:59,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-07 01:06:59,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:06:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:06:59,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:06:59,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224858954] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:59,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:06:59,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-04-07 01:06:59,834 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:06:59,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1283284695] [2022-04-07 01:06:59,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1283284695] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:06:59,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:06:59,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 01:06:59,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273387983] [2022-04-07 01:06:59,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:06:59,834 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 01:06:59,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:06:59,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 01:06:59,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-04-07 01:06:59,835 INFO L87 Difference]: Start difference. First operand 3652 states and 5144 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:07:01,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:07:01,079 INFO L93 Difference]: Finished difference Result 3714 states and 5214 transitions. [2022-04-07 01:07:01,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 01:07:01,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 88 [2022-04-07 01:07:01,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:07:01,086 INFO L225 Difference]: With dead ends: 3714 [2022-04-07 01:07:01,086 INFO L226 Difference]: Without dead ends: 3657 [2022-04-07 01:07:01,091 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-04-07 01:07:01,092 INFO L913 BasicCegarLoop]: 2510 mSDtfsCounter, 37 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 4969 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:07:01,092 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 4969 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 01:07:01,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3657 states. [2022-04-07 01:07:02,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3657 to 3657. [2022-04-07 01:07:02,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3657 states, 2451 states have (on average 1.3349653202774379) internal successors, (3272), 2519 states have internal predecessors, (3272), 936 states have call successors, (936), 261 states have call predecessors, (936), 269 states have return successors, (943), 918 states have call predecessors, (943), 929 states have call successors, (943) [2022-04-07 01:07:02,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3657 states to 3657 states and 5151 transitions. [2022-04-07 01:07:02,195 INFO L78 Accepts]: Start accepts. Automaton has 3657 states and 5151 transitions. Word has length 88 [2022-04-07 01:07:02,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:07:02,196 INFO L478 AbstractCegarLoop]: Abstraction has 3657 states and 5151 transitions. [2022-04-07 01:07:02,196 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:07:02,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3657 states and 5151 transitions. [2022-04-07 01:07:02,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-04-07 01:07:02,198 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:07:02,198 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:07:02,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-04-07 01:07:02,407 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:07:02,407 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:07:02,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:07:02,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1359885864, now seen corresponding path program 1 times [2022-04-07 01:07:02,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:07:02,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1836476000] [2022-04-07 01:07:02,409 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:07:02,409 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:07:02,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1359885864, now seen corresponding path program 2 times [2022-04-07 01:07:02,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:07:02,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799451312] [2022-04-07 01:07:02,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:07:02,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:07:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:02,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:07:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:02,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:07:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:02,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:07:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:02,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-07 01:07:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:02,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 01:07:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:02,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:03,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:07:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:03,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 01:07:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:03,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:03,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:07:03,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:07:03,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799451312] [2022-04-07 01:07:03,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799451312] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:07:03,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439846268] [2022-04-07 01:07:03,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:07:03,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:07:03,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:07:03,035 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:07:03,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-04-07 01:07:04,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:07:04,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:07:04,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-07 01:07:04,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:07:04,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:07:04,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:07:04,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439846268] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:07:04,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:07:04,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-04-07 01:07:04,797 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:07:04,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1836476000] [2022-04-07 01:07:04,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1836476000] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:07:04,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:07:04,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 01:07:04,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052594588] [2022-04-07 01:07:04,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:07:04,797 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 01:07:04,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:07:04,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 01:07:04,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-04-07 01:07:04,798 INFO L87 Difference]: Start difference. First operand 3657 states and 5151 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-04-07 01:07:05,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:07:05,915 INFO L93 Difference]: Finished difference Result 3712 states and 5214 transitions. [2022-04-07 01:07:05,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 01:07:05,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 88 [2022-04-07 01:07:05,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:07:05,961 INFO L225 Difference]: With dead ends: 3712 [2022-04-07 01:07:05,961 INFO L226 Difference]: Without dead ends: 3659 [2022-04-07 01:07:05,962 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-04-07 01:07:05,963 INFO L913 BasicCegarLoop]: 2564 mSDtfsCounter, 61 mSDsluCounter, 2490 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 5054 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:07:05,963 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 5054 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 01:07:05,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2022-04-07 01:07:07,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 3656. [2022-04-07 01:07:07,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3656 states, 2450 states have (on average 1.333469387755102) internal successors, (3267), 2518 states have internal predecessors, (3267), 936 states have call successors, (936), 261 states have call predecessors, (936), 269 states have return successors, (943), 918 states have call predecessors, (943), 929 states have call successors, (943) [2022-04-07 01:07:07,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 5146 transitions. [2022-04-07 01:07:07,120 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 5146 transitions. Word has length 88 [2022-04-07 01:07:07,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:07:07,126 INFO L478 AbstractCegarLoop]: Abstraction has 3656 states and 5146 transitions. [2022-04-07 01:07:07,126 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-04-07 01:07:07,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 5146 transitions. [2022-04-07 01:07:07,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-04-07 01:07:07,128 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:07:07,128 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:07:07,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-04-07 01:07:07,339 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-04-07 01:07:07,339 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:07:07,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:07:07,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1395598084, now seen corresponding path program 1 times [2022-04-07 01:07:07,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:07:07,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1431364557] [2022-04-07 01:07:07,341 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:07:07,342 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:07:07,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1395598084, now seen corresponding path program 2 times [2022-04-07 01:07:07,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:07:07,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088765790] [2022-04-07 01:07:07,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:07:07,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:07:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:07,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:07:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:07,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:07:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:07,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:07:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:07,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:07:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:07,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:07,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:07,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-07 01:07:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:07,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-07 01:07:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:07,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-07 01:07:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:07,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:07,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-07 01:07:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:07,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:07,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:07:07,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:07:07,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088765790] [2022-04-07 01:07:07,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088765790] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:07:07,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636337543] [2022-04-07 01:07:07,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:07:07,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:07:07,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:07:07,742 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:07:07,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-04-07 01:07:09,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:07:09,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:07:09,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 1752 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-07 01:07:09,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:07:09,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:07:09,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:07:09,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636337543] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:07:09,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:07:09,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-04-07 01:07:09,478 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:07:09,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1431364557] [2022-04-07 01:07:09,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1431364557] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:07:09,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:07:09,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 01:07:09,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731240348] [2022-04-07 01:07:09,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:07:09,478 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 01:07:09,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:07:09,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 01:07:09,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-04-07 01:07:09,479 INFO L87 Difference]: Start difference. First operand 3656 states and 5146 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-07 01:07:10,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:07:10,844 INFO L93 Difference]: Finished difference Result 3869 states and 5402 transitions. [2022-04-07 01:07:10,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 01:07:10,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 89 [2022-04-07 01:07:10,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:07:10,853 INFO L225 Difference]: With dead ends: 3869 [2022-04-07 01:07:10,853 INFO L226 Difference]: Without dead ends: 3644 [2022-04-07 01:07:10,854 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:07:10,854 INFO L913 BasicCegarLoop]: 2510 mSDtfsCounter, 5 mSDsluCounter, 10019 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 12529 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:07:10,855 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 12529 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 01:07:10,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2022-04-07 01:07:12,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 3644. [2022-04-07 01:07:12,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 2443 states have (on average 1.3336062218583709) internal successors, (3258), 2511 states have internal predecessors, (3258), 932 states have call successors, (932), 261 states have call predecessors, (932), 268 states have return successors, (938), 913 states have call predecessors, (938), 925 states have call successors, (938) [2022-04-07 01:07:12,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 5128 transitions. [2022-04-07 01:07:12,051 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 5128 transitions. Word has length 89 [2022-04-07 01:07:12,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:07:12,052 INFO L478 AbstractCegarLoop]: Abstraction has 3644 states and 5128 transitions. [2022-04-07 01:07:12,052 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-07 01:07:12,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 5128 transitions. [2022-04-07 01:07:12,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-04-07 01:07:12,054 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:07:12,054 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:07:12,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-04-07 01:07:12,259 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-04-07 01:07:12,259 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:07:12,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:07:12,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2048182127, now seen corresponding path program 1 times [2022-04-07 01:07:12,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:07:12,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2130627780] [2022-04-07 01:07:12,262 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:07:12,262 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:07:12,262 INFO L85 PathProgramCache]: Analyzing trace with hash -2048182127, now seen corresponding path program 2 times [2022-04-07 01:07:12,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:07:12,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621117116] [2022-04-07 01:07:12,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:07:12,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:07:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:12,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:07:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:12,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:07:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:12,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:07:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:12,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-07 01:07:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:12,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 01:07:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:12,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:12,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-07 01:07:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:12,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:07:12,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:07:12,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621117116] [2022-04-07 01:07:12,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621117116] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:07:12,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862206281] [2022-04-07 01:07:12,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:07:12,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:07:12,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:07:12,681 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:07:12,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-04-07 01:07:14,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:07:14,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:07:14,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-07 01:07:14,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:07:14,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:07:14,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:07:14,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862206281] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:07:14,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:07:14,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-04-07 01:07:14,527 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:07:14,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2130627780] [2022-04-07 01:07:14,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2130627780] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:07:14,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:07:14,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 01:07:14,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64011655] [2022-04-07 01:07:14,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:07:14,527 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 01:07:14,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:07:14,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 01:07:14,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-04-07 01:07:14,528 INFO L87 Difference]: Start difference. First operand 3644 states and 5128 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-07 01:07:15,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:07:15,779 INFO L93 Difference]: Finished difference Result 3703 states and 5199 transitions. [2022-04-07 01:07:15,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 01:07:15,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 87 [2022-04-07 01:07:15,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:07:15,788 INFO L225 Difference]: With dead ends: 3703 [2022-04-07 01:07:15,788 INFO L226 Difference]: Without dead ends: 3656 [2022-04-07 01:07:15,789 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:07:15,789 INFO L913 BasicCegarLoop]: 2502 mSDtfsCounter, 16 mSDsluCounter, 9965 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 12467 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:07:15,790 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 12467 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-07 01:07:15,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3656 states. [2022-04-07 01:07:16,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3656 to 3645. [2022-04-07 01:07:16,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3645 states, 2444 states have (on average 1.3338788870703764) internal successors, (3260), 2512 states have internal predecessors, (3260), 932 states have call successors, (932), 261 states have call predecessors, (932), 268 states have return successors, (938), 913 states have call predecessors, (938), 925 states have call successors, (938) [2022-04-07 01:07:16,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 5130 transitions. [2022-04-07 01:07:16,994 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 5130 transitions. Word has length 87 [2022-04-07 01:07:16,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:07:16,994 INFO L478 AbstractCegarLoop]: Abstraction has 3645 states and 5130 transitions. [2022-04-07 01:07:16,994 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-07 01:07:16,994 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 5130 transitions. [2022-04-07 01:07:16,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-04-07 01:07:16,996 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:07:16,996 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:07:17,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-04-07 01:07:17,215 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:07:17,215 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:07:17,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:07:17,216 INFO L85 PathProgramCache]: Analyzing trace with hash -554188091, now seen corresponding path program 1 times [2022-04-07 01:07:17,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:07:17,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [995042728] [2022-04-07 01:07:17,218 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:07:17,218 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:07:17,218 INFO L85 PathProgramCache]: Analyzing trace with hash -554188091, now seen corresponding path program 2 times [2022-04-07 01:07:17,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:07:17,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138695355] [2022-04-07 01:07:17,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:07:17,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:07:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:17,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:07:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:17,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:07:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:17,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:07:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:17,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:07:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:17,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:17,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:17,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:07:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:17,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 01:07:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:17,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-07 01:07:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:17,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-07 01:07:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:17,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:17,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:07:17,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:07:17,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138695355] [2022-04-07 01:07:17,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138695355] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:07:17,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761172445] [2022-04-07 01:07:17,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:07:17,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:07:17,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:07:17,640 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:07:17,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-04-07 01:07:19,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:07:19,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:07:19,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-07 01:07:19,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:07:19,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:07:19,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:07:19,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761172445] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:07:19,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:07:19,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-04-07 01:07:19,753 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:07:19,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [995042728] [2022-04-07 01:07:19,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [995042728] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:07:19,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:07:19,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 01:07:19,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971340404] [2022-04-07 01:07:19,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:07:19,754 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-07 01:07:19,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:07:19,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-07 01:07:19,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-04-07 01:07:19,754 INFO L87 Difference]: Start difference. First operand 3645 states and 5130 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-04-07 01:07:23,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:07:23,723 INFO L93 Difference]: Finished difference Result 4881 states and 6940 transitions. [2022-04-07 01:07:23,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-07 01:07:23,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 89 [2022-04-07 01:07:23,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:07:23,735 INFO L225 Difference]: With dead ends: 4881 [2022-04-07 01:07:23,736 INFO L226 Difference]: Without dead ends: 4875 [2022-04-07 01:07:23,737 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-04-07 01:07:23,738 INFO L913 BasicCegarLoop]: 4271 mSDtfsCounter, 5470 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 1074 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5474 SdHoareTripleChecker+Valid, 5849 SdHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1074 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:07:23,738 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5474 Valid, 5849 Invalid, 2030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1074 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-04-07 01:07:23,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4875 states. [2022-04-07 01:07:24,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4875 to 3645. [2022-04-07 01:07:24,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3645 states, 2444 states have (on average 1.3334697217675942) internal successors, (3259), 2512 states have internal predecessors, (3259), 932 states have call successors, (932), 261 states have call predecessors, (932), 268 states have return successors, (938), 913 states have call predecessors, (938), 925 states have call successors, (938) [2022-04-07 01:07:24,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 5129 transitions. [2022-04-07 01:07:24,977 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 5129 transitions. Word has length 89 [2022-04-07 01:07:24,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:07:24,977 INFO L478 AbstractCegarLoop]: Abstraction has 3645 states and 5129 transitions. [2022-04-07 01:07:24,977 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-04-07 01:07:24,977 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 5129 transitions. [2022-04-07 01:07:24,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-04-07 01:07:24,979 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:07:24,979 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:07:25,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-04-07 01:07:25,197 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-04-07 01:07:25,198 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:07:25,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:07:25,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1738187805, now seen corresponding path program 1 times [2022-04-07 01:07:25,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:07:25,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1504305868] [2022-04-07 01:07:25,200 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:07:25,200 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:07:25,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1738187805, now seen corresponding path program 2 times [2022-04-07 01:07:25,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:07:25,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017630708] [2022-04-07 01:07:25,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:07:25,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:07:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:25,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:07:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:25,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:07:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:25,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:07:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:25,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-07 01:07:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:25,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 01:07:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:25,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:25,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-07 01:07:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:25,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:07:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:25,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:07:25,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:07:25,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017630708] [2022-04-07 01:07:25,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017630708] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:07:25,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256077122] [2022-04-07 01:07:25,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:07:25,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:07:25,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:07:25,682 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:07:25,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-04-07 01:07:27,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:07:27,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:07:27,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 1794 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-07 01:07:27,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:07:27,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:07:27,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:07:27,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256077122] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:07:27,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:07:27,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-04-07 01:07:27,581 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:07:27,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1504305868] [2022-04-07 01:07:27,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1504305868] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:07:27,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:07:27,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 01:07:27,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337686609] [2022-04-07 01:07:27,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:07:27,582 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 01:07:27,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:07:27,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 01:07:27,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-07 01:07:27,582 INFO L87 Difference]: Start difference. First operand 3645 states and 5129 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-07 01:07:28,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:07:28,870 INFO L93 Difference]: Finished difference Result 5056 states and 7140 transitions. [2022-04-07 01:07:28,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 01:07:28,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 89 [2022-04-07 01:07:28,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:07:28,879 INFO L225 Difference]: With dead ends: 5056 [2022-04-07 01:07:28,879 INFO L226 Difference]: Without dead ends: 3608 [2022-04-07 01:07:28,884 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-07 01:07:28,884 INFO L913 BasicCegarLoop]: 2469 mSDtfsCounter, 2409 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2409 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:07:28,884 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2409 Valid, 2470 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 01:07:28,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3608 states. [2022-04-07 01:07:30,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3608 to 3608. [2022-04-07 01:07:30,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3608 states, 2424 states have (on average 1.3329207920792079) internal successors, (3231), 2492 states have internal predecessors, (3231), 918 states have call successors, (918), 258 states have call predecessors, (918), 265 states have return successors, (924), 899 states have call predecessors, (924), 911 states have call successors, (924) [2022-04-07 01:07:30,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3608 states to 3608 states and 5073 transitions. [2022-04-07 01:07:30,071 INFO L78 Accepts]: Start accepts. Automaton has 3608 states and 5073 transitions. Word has length 89 [2022-04-07 01:07:30,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:07:30,071 INFO L478 AbstractCegarLoop]: Abstraction has 3608 states and 5073 transitions. [2022-04-07 01:07:30,071 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-07 01:07:30,071 INFO L276 IsEmpty]: Start isEmpty. Operand 3608 states and 5073 transitions. [2022-04-07 01:07:30,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-04-07 01:07:30,073 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:07:30,073 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:07:30,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-04-07 01:07:30,288 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:07:30,288 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:07:30,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:07:30,288 INFO L85 PathProgramCache]: Analyzing trace with hash -899188565, now seen corresponding path program 1 times [2022-04-07 01:07:30,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:07:30,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [271315860] [2022-04-07 01:07:30,290 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:07:30,290 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:07:30,290 INFO L85 PathProgramCache]: Analyzing trace with hash -899188565, now seen corresponding path program 2 times [2022-04-07 01:07:30,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:07:30,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637658877] [2022-04-07 01:07:30,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:07:30,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:07:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:30,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:07:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:30,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:07:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:30,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:07:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:30,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:07:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:30,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:30,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:30,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:07:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:30,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 01:07:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:30,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-07 01:07:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:30,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-07 01:07:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:30,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:30,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:07:30,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:07:30,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637658877] [2022-04-07 01:07:30,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637658877] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:07:30,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623248837] [2022-04-07 01:07:30,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:07:30,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:07:30,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:07:30,675 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:07:30,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-04-07 01:07:32,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:07:32,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:07:32,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 1779 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-07 01:07:32,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:07:32,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:07:32,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:07:32,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623248837] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:07:32,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:07:32,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2022-04-07 01:07:32,561 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:07:32,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [271315860] [2022-04-07 01:07:32,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [271315860] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:07:32,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:07:32,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 01:07:32,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786246574] [2022-04-07 01:07:32,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:07:32,561 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-07 01:07:32,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:07:32,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-07 01:07:32,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-04-07 01:07:32,562 INFO L87 Difference]: Start difference. First operand 3608 states and 5073 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-04-07 01:07:34,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:07:34,054 INFO L93 Difference]: Finished difference Result 3700 states and 5179 transitions. [2022-04-07 01:07:34,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-07 01:07:34,055 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 90 [2022-04-07 01:07:34,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:07:34,064 INFO L225 Difference]: With dead ends: 3700 [2022-04-07 01:07:34,064 INFO L226 Difference]: Without dead ends: 3640 [2022-04-07 01:07:34,066 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-04-07 01:07:34,077 INFO L913 BasicCegarLoop]: 2465 mSDtfsCounter, 48 mSDsluCounter, 17190 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 19655 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:07:34,077 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 19655 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 01:07:34,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2022-04-07 01:07:35,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3629. [2022-04-07 01:07:35,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3629 states, 2441 states have (on average 1.331421548545678) internal successors, (3250), 2510 states have internal predecessors, (3250), 920 states have call successors, (920), 258 states have call predecessors, (920), 267 states have return successors, (928), 903 states have call predecessors, (928), 913 states have call successors, (928) [2022-04-07 01:07:35,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3629 states to 3629 states and 5098 transitions. [2022-04-07 01:07:35,346 INFO L78 Accepts]: Start accepts. Automaton has 3629 states and 5098 transitions. Word has length 90 [2022-04-07 01:07:35,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:07:35,347 INFO L478 AbstractCegarLoop]: Abstraction has 3629 states and 5098 transitions. [2022-04-07 01:07:35,347 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-04-07 01:07:35,347 INFO L276 IsEmpty]: Start isEmpty. Operand 3629 states and 5098 transitions. [2022-04-07 01:07:35,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-04-07 01:07:35,349 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:07:35,349 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:07:35,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-04-07 01:07:35,567 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-04-07 01:07:35,567 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:07:35,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:07:35,568 INFO L85 PathProgramCache]: Analyzing trace with hash -898911735, now seen corresponding path program 1 times [2022-04-07 01:07:35,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:07:35,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1434030152] [2022-04-07 01:07:35,570 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:07:35,570 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:07:35,570 INFO L85 PathProgramCache]: Analyzing trace with hash -898911735, now seen corresponding path program 2 times [2022-04-07 01:07:35,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:07:35,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383921197] [2022-04-07 01:07:35,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:07:35,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:07:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:35,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:07:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:35,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:07:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:35,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:07:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:35,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:07:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:35,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:35,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:35,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:07:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:35,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 01:07:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:35,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-07 01:07:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:35,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-07 01:07:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:35,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:35,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:07:35,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:07:35,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383921197] [2022-04-07 01:07:35,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383921197] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:07:35,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388419161] [2022-04-07 01:07:35,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:07:35,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:07:35,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:07:35,956 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:07:35,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-04-07 01:07:37,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:07:37,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:07:37,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-07 01:07:37,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:07:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:07:38,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:07:38,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388419161] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:07:38,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:07:38,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-04-07 01:07:38,147 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:07:38,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1434030152] [2022-04-07 01:07:38,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1434030152] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:07:38,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:07:38,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 01:07:38,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369142296] [2022-04-07 01:07:38,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:07:38,147 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 01:07:38,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:07:38,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 01:07:38,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-04-07 01:07:38,148 INFO L87 Difference]: Start difference. First operand 3629 states and 5098 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 9 states have internal predecessors, (66), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-04-07 01:07:40,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:07:40,883 INFO L93 Difference]: Finished difference Result 3795 states and 5286 transitions. [2022-04-07 01:07:40,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-07 01:07:40,883 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 9 states have internal predecessors, (66), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 90 [2022-04-07 01:07:40,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:07:40,891 INFO L225 Difference]: With dead ends: 3795 [2022-04-07 01:07:40,891 INFO L226 Difference]: Without dead ends: 3770 [2022-04-07 01:07:40,893 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2022-04-07 01:07:40,893 INFO L913 BasicCegarLoop]: 2580 mSDtfsCounter, 1137 mSDsluCounter, 14769 mSDsCounter, 0 mSdLazyCounter, 2414 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 17349 SdHoareTripleChecker+Invalid, 2440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-07 01:07:40,893 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1144 Valid, 17349 Invalid, 2440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2414 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-07 01:07:40,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3770 states. [2022-04-07 01:07:42,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3770 to 3669. [2022-04-07 01:07:42,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3669 states, 2469 states have (on average 1.3296881328473067) internal successors, (3283), 2540 states have internal predecessors, (3283), 925 states have call successors, (925), 263 states have call predecessors, (925), 274 states have return successors, (935), 909 states have call predecessors, (935), 918 states have call successors, (935) [2022-04-07 01:07:42,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3669 states to 3669 states and 5143 transitions. [2022-04-07 01:07:42,114 INFO L78 Accepts]: Start accepts. Automaton has 3669 states and 5143 transitions. Word has length 90 [2022-04-07 01:07:42,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:07:42,114 INFO L478 AbstractCegarLoop]: Abstraction has 3669 states and 5143 transitions. [2022-04-07 01:07:42,114 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 9 states have internal predecessors, (66), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-04-07 01:07:42,114 INFO L276 IsEmpty]: Start isEmpty. Operand 3669 states and 5143 transitions. [2022-04-07 01:07:42,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-04-07 01:07:42,116 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:07:42,116 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:07:42,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-04-07 01:07:42,321 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-04-07 01:07:42,321 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:07:42,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:07:42,321 INFO L85 PathProgramCache]: Analyzing trace with hash 695765407, now seen corresponding path program 1 times [2022-04-07 01:07:42,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:07:42,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [638076608] [2022-04-07 01:07:42,325 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:07:42,325 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:07:42,325 INFO L85 PathProgramCache]: Analyzing trace with hash 695765407, now seen corresponding path program 2 times [2022-04-07 01:07:42,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:07:42,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792662009] [2022-04-07 01:07:42,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:07:42,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:07:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:42,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:07:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:42,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:07:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:42,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:07:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:42,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-07 01:07:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:42,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 01:07:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:42,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:42,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-07 01:07:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:42,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:07:42,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:07:42,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792662009] [2022-04-07 01:07:42,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792662009] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:07:42,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761055623] [2022-04-07 01:07:42,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:07:42,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:07:42,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:07:42,715 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:07:42,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-04-07 01:07:44,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:07:44,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:07:44,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-07 01:07:44,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:07:44,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:07:44,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:07:44,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761055623] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:07:44,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:07:44,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-04-07 01:07:44,609 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:07:44,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [638076608] [2022-04-07 01:07:44,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [638076608] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:07:44,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:07:44,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 01:07:44,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977373514] [2022-04-07 01:07:44,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:07:44,610 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 01:07:44,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:07:44,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 01:07:44,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-04-07 01:07:44,610 INFO L87 Difference]: Start difference. First operand 3669 states and 5143 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-07 01:07:45,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:07:45,953 INFO L93 Difference]: Finished difference Result 3732 states and 5217 transitions. [2022-04-07 01:07:45,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 01:07:45,954 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 89 [2022-04-07 01:07:45,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:07:45,963 INFO L225 Difference]: With dead ends: 3732 [2022-04-07 01:07:45,963 INFO L226 Difference]: Without dead ends: 3685 [2022-04-07 01:07:45,964 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:07:45,964 INFO L913 BasicCegarLoop]: 2476 mSDtfsCounter, 5 mSDsluCounter, 9880 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 12356 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:07:45,964 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 12356 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-07 01:07:45,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3685 states. [2022-04-07 01:07:47,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3685 to 3673. [2022-04-07 01:07:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3673 states, 2472 states have (on average 1.3292880258899675) internal successors, (3286), 2543 states have internal predecessors, (3286), 925 states have call successors, (925), 263 states have call predecessors, (925), 275 states have return successors, (936), 910 states have call predecessors, (936), 918 states have call successors, (936) [2022-04-07 01:07:47,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3673 states to 3673 states and 5147 transitions. [2022-04-07 01:07:47,192 INFO L78 Accepts]: Start accepts. Automaton has 3673 states and 5147 transitions. Word has length 89 [2022-04-07 01:07:47,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:07:47,192 INFO L478 AbstractCegarLoop]: Abstraction has 3673 states and 5147 transitions. [2022-04-07 01:07:47,192 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-07 01:07:47,192 INFO L276 IsEmpty]: Start isEmpty. Operand 3673 states and 5147 transitions. [2022-04-07 01:07:47,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-04-07 01:07:47,194 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:07:47,194 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:07:47,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-04-07 01:07:47,399 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:07:47,399 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:07:47,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:07:47,400 INFO L85 PathProgramCache]: Analyzing trace with hash -2023692261, now seen corresponding path program 1 times [2022-04-07 01:07:47,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:07:47,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1031474911] [2022-04-07 01:07:47,402 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:07:47,402 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:07:47,402 INFO L85 PathProgramCache]: Analyzing trace with hash -2023692261, now seen corresponding path program 2 times [2022-04-07 01:07:47,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:07:47,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905783562] [2022-04-07 01:07:47,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:07:47,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:07:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:47,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:07:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:47,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:07:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:47,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:07:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:47,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:07:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:47,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 01:07:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:47,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:47,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-07 01:07:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:47,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-07 01:07:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:47,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-07 01:07:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:47,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:07:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:47,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:07:47,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:07:47,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905783562] [2022-04-07 01:07:47,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905783562] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:07:47,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545431403] [2022-04-07 01:07:47,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:07:47,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:07:47,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:07:47,771 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:07:47,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-04-07 01:07:49,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:07:49,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:07:49,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 2295 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-07 01:07:49,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:07:49,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:07:49,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:07:49,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545431403] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:07:49,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:07:49,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-04-07 01:07:49,660 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:07:49,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1031474911] [2022-04-07 01:07:49,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1031474911] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:07:49,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:07:49,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 01:07:49,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833173874] [2022-04-07 01:07:49,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:07:49,661 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 01:07:49,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:07:49,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 01:07:49,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-04-07 01:07:49,661 INFO L87 Difference]: Start difference. First operand 3673 states and 5147 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-04-07 01:07:51,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:07:51,468 INFO L93 Difference]: Finished difference Result 4869 states and 6906 transitions. [2022-04-07 01:07:51,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 01:07:51,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 97 [2022-04-07 01:07:51,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:07:51,481 INFO L225 Difference]: With dead ends: 4869 [2022-04-07 01:07:51,481 INFO L226 Difference]: Without dead ends: 4866 [2022-04-07 01:07:51,483 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-04-07 01:07:51,483 INFO L913 BasicCegarLoop]: 3902 mSDtfsCounter, 1766 mSDsluCounter, 2425 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 6327 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:07:51,484 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1766 Valid, 6327 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 01:07:51,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4866 states. [2022-04-07 01:07:52,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4866 to 3677. [2022-04-07 01:07:52,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3677 states, 2476 states have (on average 1.3295638126009692) internal successors, (3292), 2547 states have internal predecessors, (3292), 925 states have call successors, (925), 263 states have call predecessors, (925), 275 states have return successors, (936), 910 states have call predecessors, (936), 918 states have call successors, (936) [2022-04-07 01:07:52,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 5153 transitions. [2022-04-07 01:07:52,889 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 5153 transitions. Word has length 97 [2022-04-07 01:07:52,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:07:52,890 INFO L478 AbstractCegarLoop]: Abstraction has 3677 states and 5153 transitions. [2022-04-07 01:07:52,890 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-04-07 01:07:52,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 5153 transitions. [2022-04-07 01:07:52,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-04-07 01:07:52,892 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:07:52,892 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:07:52,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-04-07 01:07:53,107 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:07:53,107 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:07:53,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:07:53,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1404535558, now seen corresponding path program 1 times [2022-04-07 01:07:53,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:07:53,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1238472867] [2022-04-07 01:07:53,115 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:07:53,116 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:07:53,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1404535558, now seen corresponding path program 2 times [2022-04-07 01:07:53,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:07:53,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169944180] [2022-04-07 01:07:53,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:07:53,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:07:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:53,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:07:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:53,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:07:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:53,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:07:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:53,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:07:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:53,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:53,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:53,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:07:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:53,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 01:07:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:53,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-07 01:07:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:53,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-07 01:07:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:53,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:53,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:07:53,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:07:53,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169944180] [2022-04-07 01:07:53,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169944180] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:07:53,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937222504] [2022-04-07 01:07:53,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:07:53,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:07:53,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:07:53,522 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:07:53,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-04-07 01:07:55,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:07:55,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:07:55,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-07 01:07:55,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:07:55,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:07:55,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:07:55,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937222504] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:07:55,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:07:55,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-04-07 01:07:55,479 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:07:55,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1238472867] [2022-04-07 01:07:55,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1238472867] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:07:55,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:07:55,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-07 01:07:55,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095714386] [2022-04-07 01:07:55,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:07:55,480 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-07 01:07:55,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:07:55,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-07 01:07:55,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-04-07 01:07:55,480 INFO L87 Difference]: Start difference. First operand 3677 states and 5153 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-04-07 01:07:57,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:07:57,013 INFO L93 Difference]: Finished difference Result 6455 states and 9153 transitions. [2022-04-07 01:07:57,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-07 01:07:57,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 91 [2022-04-07 01:07:57,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:07:57,024 INFO L225 Difference]: With dead ends: 6455 [2022-04-07 01:07:57,024 INFO L226 Difference]: Without dead ends: 3686 [2022-04-07 01:07:57,033 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-04-07 01:07:57,033 INFO L913 BasicCegarLoop]: 2468 mSDtfsCounter, 3 mSDsluCounter, 4931 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7399 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:07:57,034 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 7399 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 01:07:57,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2022-04-07 01:07:58,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 3686. [2022-04-07 01:07:58,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3686 states, 2483 states have (on average 1.3294401933145388) internal successors, (3301), 2556 states have internal predecessors, (3301), 925 states have call successors, (925), 263 states have call predecessors, (925), 277 states have return successors, (938), 910 states have call predecessors, (938), 918 states have call successors, (938) [2022-04-07 01:07:58,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 5164 transitions. [2022-04-07 01:07:58,433 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 5164 transitions. Word has length 91 [2022-04-07 01:07:58,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:07:58,434 INFO L478 AbstractCegarLoop]: Abstraction has 3686 states and 5164 transitions. [2022-04-07 01:07:58,434 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-04-07 01:07:58,434 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 5164 transitions. [2022-04-07 01:07:58,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-04-07 01:07:58,436 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:07:58,436 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:07:58,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-04-07 01:07:58,655 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:07:58,655 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:07:58,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:07:58,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1270672595, now seen corresponding path program 1 times [2022-04-07 01:07:58,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:07:58,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [514133372] [2022-04-07 01:07:58,658 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:07:58,658 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:07:58,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1270672595, now seen corresponding path program 2 times [2022-04-07 01:07:58,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:07:58,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735587477] [2022-04-07 01:07:58,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:07:58,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:07:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:58,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:07:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:58,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:07:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:58,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:07:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:59,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-07 01:07:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:59,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 01:07:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:59,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:07:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:59,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-07 01:07:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:07:59,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:07:59,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:07:59,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735587477] [2022-04-07 01:07:59,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735587477] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:07:59,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631835479] [2022-04-07 01:07:59,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:07:59,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:07:59,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:07:59,196 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:07:59,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-04-07 01:08:01,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:08:01,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:08:01,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-07 01:08:01,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:08:01,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:08:01,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:08:01,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631835479] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:08:01,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:08:01,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-04-07 01:08:01,116 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:08:01,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [514133372] [2022-04-07 01:08:01,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [514133372] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:08:01,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:08:01,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 01:08:01,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530638272] [2022-04-07 01:08:01,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:08:01,117 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 01:08:01,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:08:01,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 01:08:01,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-07 01:08:01,117 INFO L87 Difference]: Start difference. First operand 3686 states and 5164 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-07 01:08:02,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:08:02,558 INFO L93 Difference]: Finished difference Result 3734 states and 5221 transitions. [2022-04-07 01:08:02,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 01:08:02,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 90 [2022-04-07 01:08:02,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:08:02,568 INFO L225 Difference]: With dead ends: 3734 [2022-04-07 01:08:02,568 INFO L226 Difference]: Without dead ends: 3687 [2022-04-07 01:08:02,569 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-07 01:08:02,569 INFO L913 BasicCegarLoop]: 2474 mSDtfsCounter, 2 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4932 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:08:02,569 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 4932 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-07 01:08:02,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2022-04-07 01:08:04,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 3686. [2022-04-07 01:08:04,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3686 states, 2483 states have (on average 1.3294401933145388) internal successors, (3301), 2556 states have internal predecessors, (3301), 925 states have call successors, (925), 263 states have call predecessors, (925), 277 states have return successors, (938), 910 states have call predecessors, (938), 918 states have call successors, (938) [2022-04-07 01:08:04,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 5164 transitions. [2022-04-07 01:08:04,012 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 5164 transitions. Word has length 90 [2022-04-07 01:08:04,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:08:04,012 INFO L478 AbstractCegarLoop]: Abstraction has 3686 states and 5164 transitions. [2022-04-07 01:08:04,013 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-07 01:08:04,013 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 5164 transitions. [2022-04-07 01:08:04,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-04-07 01:08:04,015 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:08:04,015 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:08:04,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-04-07 01:08:04,217 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-04-07 01:08:04,218 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:08:04,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:08:04,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1371854706, now seen corresponding path program 1 times [2022-04-07 01:08:04,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:08:04,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1538638699] [2022-04-07 01:08:04,220 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:08:04,220 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:08:04,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1371854706, now seen corresponding path program 2 times [2022-04-07 01:08:04,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:08:04,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385222305] [2022-04-07 01:08:04,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:08:04,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:08:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:04,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:08:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:04,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:08:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:04,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:08:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:04,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:08:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:04,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:08:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:04,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:08:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:04,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:08:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:04,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 01:08:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:04,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-07 01:08:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:04,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-07 01:08:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:04,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:08:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:04,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:08:04,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:08:04,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385222305] [2022-04-07 01:08:04,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385222305] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:08:04,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607022955] [2022-04-07 01:08:04,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:08:04,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:08:04,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:08:04,701 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:08:04,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-04-07 01:08:06,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:08:06,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:08:06,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-07 01:08:06,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:08:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-07 01:08:07,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:08:07,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607022955] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:08:07,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:08:07,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-04-07 01:08:07,092 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:08:07,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1538638699] [2022-04-07 01:08:07,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1538638699] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:08:07,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:08:07,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-07 01:08:07,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693485413] [2022-04-07 01:08:07,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:08:07,092 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-07 01:08:07,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:08:07,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-07 01:08:07,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-04-07 01:08:07,093 INFO L87 Difference]: Start difference. First operand 3686 states and 5164 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-04-07 01:08:08,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:08:08,422 INFO L93 Difference]: Finished difference Result 6466 states and 9155 transitions. [2022-04-07 01:08:08,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-07 01:08:08,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2022-04-07 01:08:08,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:08:08,433 INFO L225 Difference]: With dead ends: 6466 [2022-04-07 01:08:08,433 INFO L226 Difference]: Without dead ends: 3693 [2022-04-07 01:08:08,439 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-04-07 01:08:08,439 INFO L913 BasicCegarLoop]: 2469 mSDtfsCounter, 2 mSDsluCounter, 4931 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7400 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:08:08,441 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 7400 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 01:08:08,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3693 states. [2022-04-07 01:08:09,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3693 to 3689. [2022-04-07 01:08:09,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3689 states, 2486 states have (on average 1.329847144006436) internal successors, (3306), 2559 states have internal predecessors, (3306), 925 states have call successors, (925), 263 states have call predecessors, (925), 277 states have return successors, (938), 910 states have call predecessors, (938), 918 states have call successors, (938) [2022-04-07 01:08:09,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 5169 transitions. [2022-04-07 01:08:09,834 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 5169 transitions. Word has length 92 [2022-04-07 01:08:09,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:08:09,834 INFO L478 AbstractCegarLoop]: Abstraction has 3689 states and 5169 transitions. [2022-04-07 01:08:09,834 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-04-07 01:08:09,834 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 5169 transitions. [2022-04-07 01:08:09,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-04-07 01:08:09,836 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:08:09,836 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:08:09,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-04-07 01:08:10,036 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-04-07 01:08:10,037 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:08:10,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:08:10,037 INFO L85 PathProgramCache]: Analyzing trace with hash -42351996, now seen corresponding path program 1 times [2022-04-07 01:08:10,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:08:10,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [451600176] [2022-04-07 01:08:10,039 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:08:10,039 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:08:10,039 INFO L85 PathProgramCache]: Analyzing trace with hash -42351996, now seen corresponding path program 2 times [2022-04-07 01:08:10,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:08:10,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256625651] [2022-04-07 01:08:10,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:08:10,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:08:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:10,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:08:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:10,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:08:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:10,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:08:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:10,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:08:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:10,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:08:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:10,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:08:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:10,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:08:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:10,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 01:08:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:10,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 01:08:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:10,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-07 01:08:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:10,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:08:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:10,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-07 01:08:10,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:08:10,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256625651] [2022-04-07 01:08:10,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256625651] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:08:10,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895243383] [2022-04-07 01:08:10,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:08:10,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:08:10,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:08:10,512 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:08:10,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-04-07 01:08:13,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:08:13,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:08:13,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-07 01:08:13,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:08:13,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:08:13,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:08:13,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895243383] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:08:13,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:08:13,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-04-07 01:08:13,472 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:08:13,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [451600176] [2022-04-07 01:08:13,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [451600176] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:08:13,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:08:13,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 01:08:13,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789738104] [2022-04-07 01:08:13,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:08:13,472 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 01:08:13,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:08:13,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 01:08:13,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-04-07 01:08:13,473 INFO L87 Difference]: Start difference. First operand 3689 states and 5169 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-04-07 01:08:15,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:08:15,058 INFO L93 Difference]: Finished difference Result 3802 states and 5294 transitions. [2022-04-07 01:08:15,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 01:08:15,059 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 93 [2022-04-07 01:08:15,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:08:15,066 INFO L225 Difference]: With dead ends: 3802 [2022-04-07 01:08:15,066 INFO L226 Difference]: Without dead ends: 3777 [2022-04-07 01:08:15,067 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-07 01:08:15,072 INFO L913 BasicCegarLoop]: 2485 mSDtfsCounter, 79 mSDsluCounter, 12438 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 14923 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:08:15,072 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 14923 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-07 01:08:15,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3777 states. [2022-04-07 01:08:16,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3777 to 3629. [2022-04-07 01:08:16,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3629 states, 2442 states have (on average 1.3325143325143325) internal successors, (3254), 2512 states have internal predecessors, (3254), 918 states have call successors, (918), 258 states have call predecessors, (918), 268 states have return successors, (927), 900 states have call predecessors, (927), 911 states have call successors, (927) [2022-04-07 01:08:16,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3629 states to 3629 states and 5099 transitions. [2022-04-07 01:08:16,354 INFO L78 Accepts]: Start accepts. Automaton has 3629 states and 5099 transitions. Word has length 93 [2022-04-07 01:08:16,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:08:16,355 INFO L478 AbstractCegarLoop]: Abstraction has 3629 states and 5099 transitions. [2022-04-07 01:08:16,355 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-04-07 01:08:16,355 INFO L276 IsEmpty]: Start isEmpty. Operand 3629 states and 5099 transitions. [2022-04-07 01:08:16,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-04-07 01:08:16,359 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:08:16,359 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:08:16,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-04-07 01:08:16,575 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:08:16,575 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:08:16,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:08:16,576 INFO L85 PathProgramCache]: Analyzing trace with hash 681603302, now seen corresponding path program 1 times [2022-04-07 01:08:16,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:08:16,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [567012495] [2022-04-07 01:08:16,579 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:08:16,579 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:08:16,579 INFO L85 PathProgramCache]: Analyzing trace with hash 681603302, now seen corresponding path program 2 times [2022-04-07 01:08:16,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:08:16,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691033704] [2022-04-07 01:08:16,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:08:16,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:08:16,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:16,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:08:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:16,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:08:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:16,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:08:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:16,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:08:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:16,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:08:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:16,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:08:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:17,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:08:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:17,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 01:08:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:17,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 01:08:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:17,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-07 01:08:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:17,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:08:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:17,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-07 01:08:17,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:08:17,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691033704] [2022-04-07 01:08:17,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691033704] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:08:17,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107273716] [2022-04-07 01:08:17,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:08:17,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:08:17,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:08:17,055 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:08:17,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-04-07 01:08:18,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:08:18,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:08:18,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 1779 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-07 01:08:18,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:08:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:08:19,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:08:19,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107273716] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:08:19,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:08:19,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-04-07 01:08:19,382 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:08:19,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [567012495] [2022-04-07 01:08:19,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [567012495] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:08:19,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:08:19,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 01:08:19,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469044562] [2022-04-07 01:08:19,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:08:19,382 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-07 01:08:19,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:08:19,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-07 01:08:19,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-04-07 01:08:19,383 INFO L87 Difference]: Start difference. First operand 3629 states and 5099 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-04-07 01:08:24,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:08:24,395 INFO L93 Difference]: Finished difference Result 4853 states and 6892 transitions. [2022-04-07 01:08:24,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-07 01:08:24,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 93 [2022-04-07 01:08:24,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:08:24,408 INFO L225 Difference]: With dead ends: 4853 [2022-04-07 01:08:24,408 INFO L226 Difference]: Without dead ends: 4847 [2022-04-07 01:08:24,410 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-04-07 01:08:24,410 INFO L913 BasicCegarLoop]: 4216 mSDtfsCounter, 4284 mSDsluCounter, 3107 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4288 SdHoareTripleChecker+Valid, 7323 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-04-07 01:08:24,410 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4288 Valid, 7323 Invalid, 2217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 1858 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-04-07 01:08:24,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4847 states. [2022-04-07 01:08:25,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4847 to 3627. [2022-04-07 01:08:25,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3627 states, 2440 states have (on average 1.3319672131147542) internal successors, (3250), 2510 states have internal predecessors, (3250), 918 states have call successors, (918), 258 states have call predecessors, (918), 268 states have return successors, (927), 900 states have call predecessors, (927), 911 states have call successors, (927) [2022-04-07 01:08:25,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 5095 transitions. [2022-04-07 01:08:25,956 INFO L78 Accepts]: Start accepts. Automaton has 3627 states and 5095 transitions. Word has length 93 [2022-04-07 01:08:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:08:25,956 INFO L478 AbstractCegarLoop]: Abstraction has 3627 states and 5095 transitions. [2022-04-07 01:08:25,957 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-04-07 01:08:25,957 INFO L276 IsEmpty]: Start isEmpty. Operand 3627 states and 5095 transitions. [2022-04-07 01:08:25,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-04-07 01:08:25,959 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:08:25,959 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:08:25,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-04-07 01:08:26,171 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:08:26,171 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:08:26,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:08:26,172 INFO L85 PathProgramCache]: Analyzing trace with hash 681880132, now seen corresponding path program 1 times [2022-04-07 01:08:26,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:08:26,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2118075925] [2022-04-07 01:08:26,174 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:08:26,174 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:08:26,174 INFO L85 PathProgramCache]: Analyzing trace with hash 681880132, now seen corresponding path program 2 times [2022-04-07 01:08:26,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:08:26,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642162481] [2022-04-07 01:08:26,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:08:26,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:08:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:26,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:08:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:26,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:08:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:26,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:08:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:26,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:08:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:26,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:08:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:26,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:08:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:26,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:08:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:26,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 01:08:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:26,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 01:08:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:26,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-07 01:08:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:26,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:08:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:26,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-07 01:08:26,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:08:26,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642162481] [2022-04-07 01:08:26,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642162481] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:08:26,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549984102] [2022-04-07 01:08:26,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:08:26,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:08:26,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:08:26,594 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:08:26,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-04-07 01:08:28,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:08:28,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:08:28,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-07 01:08:28,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:08:28,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:08:28,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:08:28,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549984102] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:08:28,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:08:28,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-04-07 01:08:28,911 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:08:28,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2118075925] [2022-04-07 01:08:28,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2118075925] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:08:28,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:08:28,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 01:08:28,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972228213] [2022-04-07 01:08:28,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:08:28,911 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 01:08:28,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:08:28,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 01:08:28,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-04-07 01:08:28,912 INFO L87 Difference]: Start difference. First operand 3627 states and 5095 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-04-07 01:08:33,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:08:33,666 INFO L93 Difference]: Finished difference Result 6266 states and 8894 transitions. [2022-04-07 01:08:33,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 01:08:33,666 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 93 [2022-04-07 01:08:33,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:08:33,682 INFO L225 Difference]: With dead ends: 6266 [2022-04-07 01:08:33,682 INFO L226 Difference]: Without dead ends: 6182 [2022-04-07 01:08:33,685 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-07 01:08:33,685 INFO L913 BasicCegarLoop]: 4273 mSDtfsCounter, 1867 mSDsluCounter, 15962 mSDsCounter, 0 mSdLazyCounter, 4370 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1868 SdHoareTripleChecker+Valid, 20235 SdHoareTripleChecker+Invalid, 4383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:08:33,686 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1868 Valid, 20235 Invalid, 4383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 4370 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-04-07 01:08:33,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6182 states. [2022-04-07 01:08:35,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6182 to 3638. [2022-04-07 01:08:35,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 2449 states have (on average 1.332788893425888) internal successors, (3264), 2521 states have internal predecessors, (3264), 918 states have call successors, (918), 258 states have call predecessors, (918), 270 states have return successors, (929), 900 states have call predecessors, (929), 911 states have call successors, (929) [2022-04-07 01:08:35,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5111 transitions. [2022-04-07 01:08:35,164 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5111 transitions. Word has length 93 [2022-04-07 01:08:35,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:08:35,164 INFO L478 AbstractCegarLoop]: Abstraction has 3638 states and 5111 transitions. [2022-04-07 01:08:35,165 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-04-07 01:08:35,165 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5111 transitions. [2022-04-07 01:08:35,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-04-07 01:08:35,167 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:08:35,167 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:08:35,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-04-07 01:08:35,391 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:08:35,391 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:08:35,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:08:35,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1654728766, now seen corresponding path program 1 times [2022-04-07 01:08:35,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:08:35,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [862657598] [2022-04-07 01:08:35,394 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:08:35,394 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:08:35,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1654728766, now seen corresponding path program 2 times [2022-04-07 01:08:35,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:08:35,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018486316] [2022-04-07 01:08:35,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:08:35,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:08:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:35,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:08:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:35,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:08:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:35,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:08:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:35,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:08:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:35,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:08:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:35,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:08:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:35,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:08:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:35,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 01:08:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:35,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:08:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:35,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:08:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:35,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 01:08:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:35,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:08:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:08:35,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:08:35,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:08:35,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018486316] [2022-04-07 01:08:35,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018486316] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:08:35,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837963367] [2022-04-07 01:08:35,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:08:35,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:08:35,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:08:35,848 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:08:35,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-04-07 01:08:37,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:08:37,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:08:37,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 1956 conjuncts, 42 conjunts are in the unsatisfiable core [2022-04-07 01:08:38,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:08:38,337 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 9 [2022-04-07 01:08:38,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:08:38,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:08:38,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837963367] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:08:38,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:08:38,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2022-04-07 01:08:38,510 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:08:38,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [862657598] [2022-04-07 01:08:38,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [862657598] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:08:38,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:08:38,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 01:08:38,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756606109] [2022-04-07 01:08:38,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:08:38,511 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-07 01:08:38,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:08:38,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-07 01:08:38,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-04-07 01:08:38,514 INFO L87 Difference]: Start difference. First operand 3638 states and 5111 transitions. Second operand has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-04-07 01:08:44,560 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:08:49,453 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:08:51,003 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:08:53,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:08:55,044 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 [] [2022-04-07 01:09:05,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:09:05,048 INFO L93 Difference]: Finished difference Result 4310 states and 6120 transitions. [2022-04-07 01:09:05,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-07 01:09:05,049 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 95 [2022-04-07 01:09:05,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:09:05,059 INFO L225 Difference]: With dead ends: 4310 [2022-04-07 01:09:05,059 INFO L226 Difference]: Without dead ends: 4236 [2022-04-07 01:09:05,060 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2022-04-07 01:09:05,061 INFO L913 BasicCegarLoop]: 2106 mSDtfsCounter, 1872 mSDsluCounter, 5665 mSDsCounter, 0 mSdLazyCounter, 7588 mSolverCounterSat, 1305 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2105 SdHoareTripleChecker+Valid, 7771 SdHoareTripleChecker+Invalid, 8896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1305 IncrementalHoareTripleChecker+Valid, 7588 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:09:05,061 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2105 Valid, 7771 Invalid, 8896 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1305 Valid, 7588 Invalid, 3 Unknown, 0 Unchecked, 24.2s Time] [2022-04-07 01:09:05,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4236 states. [2022-04-07 01:09:06,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4236 to 3644. [2022-04-07 01:09:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 2453 states have (on average 1.3322462291072157) internal successors, (3268), 2525 states have internal predecessors, (3268), 919 states have call successors, (919), 258 states have call predecessors, (919), 271 states have return successors, (931), 902 states have call predecessors, (931), 912 states have call successors, (931) [2022-04-07 01:09:06,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 5118 transitions. [2022-04-07 01:09:06,592 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 5118 transitions. Word has length 95 [2022-04-07 01:09:06,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:09:06,592 INFO L478 AbstractCegarLoop]: Abstraction has 3644 states and 5118 transitions. [2022-04-07 01:09:06,593 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-04-07 01:09:06,593 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 5118 transitions. [2022-04-07 01:09:06,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-04-07 01:09:06,594 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:09:06,594 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:09:06,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-04-07 01:09:06,809 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:09:06,809 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:09:06,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:09:06,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1552708288, now seen corresponding path program 1 times [2022-04-07 01:09:06,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:09:06,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [786747805] [2022-04-07 01:09:06,839 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:09:06,840 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:09:06,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1552708288, now seen corresponding path program 2 times [2022-04-07 01:09:06,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:09:06,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229270322] [2022-04-07 01:09:06,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:09:06,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:09:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:07,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:09:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:07,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:09:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:07,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:09:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:07,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:09:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:07,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:09:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:07,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:09:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:07,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:09:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:07,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-07 01:09:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:07,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:09:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:07,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:09:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:07,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 01:09:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:07,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:09:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:07,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:09:07,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:09:07,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229270322] [2022-04-07 01:09:07,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229270322] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:09:07,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315552982] [2022-04-07 01:09:07,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:09:07,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:09:07,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:09:07,292 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:09:07,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-04-07 01:09:09,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:09:09,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:09:09,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 1999 conjuncts, 42 conjunts are in the unsatisfiable core [2022-04-07 01:09:09,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:09:09,749 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 10 [2022-04-07 01:09:09,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:09:09,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:09:09,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315552982] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:09:09,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:09:09,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-04-07 01:09:09,852 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:09:09,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [786747805] [2022-04-07 01:09:09,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [786747805] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:09:09,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:09:09,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 01:09:09,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566665168] [2022-04-07 01:09:09,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:09:09,852 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-07 01:09:09,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:09:09,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-07 01:09:09,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-04-07 01:09:09,853 INFO L87 Difference]: Start difference. First operand 3644 states and 5118 transitions. Second operand has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-04-07 01:09:21,546 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 [] [2022-04-07 01:09:23,567 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:09:25,453 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-07 01:09:27,477 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 [] [2022-04-07 01:09:39,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:09:39,310 INFO L93 Difference]: Finished difference Result 7037 states and 10034 transitions. [2022-04-07 01:09:39,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-07 01:09:39,311 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 106 [2022-04-07 01:09:39,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:09:39,322 INFO L225 Difference]: With dead ends: 7037 [2022-04-07 01:09:39,322 INFO L226 Difference]: Without dead ends: 4215 [2022-04-07 01:09:39,328 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-04-07 01:09:39,328 INFO L913 BasicCegarLoop]: 2102 mSDtfsCounter, 904 mSDsluCounter, 6409 mSDsCounter, 0 mSdLazyCounter, 8032 mSolverCounterSat, 515 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 8511 SdHoareTripleChecker+Invalid, 8550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 8032 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:09:39,328 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 8511 Invalid, 8550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 8032 Invalid, 3 Unknown, 0 Unchecked, 27.1s Time] [2022-04-07 01:09:39,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4215 states. [2022-04-07 01:09:40,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4215 to 3644. [2022-04-07 01:09:40,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 2453 states have (on average 1.3318385650224216) internal successors, (3267), 2525 states have internal predecessors, (3267), 919 states have call successors, (919), 258 states have call predecessors, (919), 271 states have return successors, (931), 902 states have call predecessors, (931), 912 states have call successors, (931) [2022-04-07 01:09:40,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 5117 transitions. [2022-04-07 01:09:40,852 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 5117 transitions. Word has length 106 [2022-04-07 01:09:40,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:09:40,852 INFO L478 AbstractCegarLoop]: Abstraction has 3644 states and 5117 transitions. [2022-04-07 01:09:40,852 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-04-07 01:09:40,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 5117 transitions. [2022-04-07 01:09:40,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-04-07 01:09:40,854 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:09:40,854 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:09:40,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-04-07 01:09:41,079 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-04-07 01:09:41,079 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:09:41,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:09:41,080 INFO L85 PathProgramCache]: Analyzing trace with hash 897737887, now seen corresponding path program 1 times [2022-04-07 01:09:41,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:09:41,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1639293078] [2022-04-07 01:09:41,086 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:09:41,086 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:09:41,086 INFO L85 PathProgramCache]: Analyzing trace with hash 897737887, now seen corresponding path program 2 times [2022-04-07 01:09:41,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:09:41,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057637790] [2022-04-07 01:09:41,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:09:41,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:09:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:41,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:09:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:41,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:09:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:41,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:09:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:41,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:09:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:41,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 01:09:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:41,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:09:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:41,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-07 01:09:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:41,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-07 01:09:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:41,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-07 01:09:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:41,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:09:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:41,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:09:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:41,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-07 01:09:41,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:09:41,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057637790] [2022-04-07 01:09:41,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057637790] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:09:41,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423821180] [2022-04-07 01:09:41,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:09:41,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:09:41,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:09:41,486 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:09:41,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-04-07 01:09:43,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:09:43,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:09:43,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 2172 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-07 01:09:43,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:09:44,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:09:44,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:09:44,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423821180] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:09:44,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:09:44,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-04-07 01:09:44,048 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:09:44,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1639293078] [2022-04-07 01:09:44,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1639293078] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:09:44,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:09:44,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 01:09:44,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081048375] [2022-04-07 01:09:44,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:09:44,049 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-07 01:09:44,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:09:44,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-07 01:09:44,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-04-07 01:09:44,049 INFO L87 Difference]: Start difference. First operand 3644 states and 5117 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-04-07 01:09:48,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:09:48,586 INFO L93 Difference]: Finished difference Result 7303 states and 10471 transitions. [2022-04-07 01:09:48,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-07 01:09:48,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2022-04-07 01:09:48,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:09:48,599 INFO L225 Difference]: With dead ends: 7303 [2022-04-07 01:09:48,599 INFO L226 Difference]: Without dead ends: 4843 [2022-04-07 01:09:48,606 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-04-07 01:09:48,606 INFO L913 BasicCegarLoop]: 4193 mSDtfsCounter, 4201 mSDsluCounter, 3112 mSDsCounter, 0 mSdLazyCounter, 1857 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4201 SdHoareTripleChecker+Valid, 7305 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-04-07 01:09:48,606 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4201 Valid, 7305 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1857 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-04-07 01:09:48,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4843 states. [2022-04-07 01:09:50,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4843 to 3641. [2022-04-07 01:09:50,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3641 states, 2450 states have (on average 1.3306122448979592) internal successors, (3260), 2522 states have internal predecessors, (3260), 919 states have call successors, (919), 258 states have call predecessors, (919), 271 states have return successors, (931), 902 states have call predecessors, (931), 912 states have call successors, (931) [2022-04-07 01:09:50,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3641 states to 3641 states and 5110 transitions. [2022-04-07 01:09:50,197 INFO L78 Accepts]: Start accepts. Automaton has 3641 states and 5110 transitions. Word has length 101 [2022-04-07 01:09:50,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:09:50,197 INFO L478 AbstractCegarLoop]: Abstraction has 3641 states and 5110 transitions. [2022-04-07 01:09:50,197 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-04-07 01:09:50,197 INFO L276 IsEmpty]: Start isEmpty. Operand 3641 states and 5110 transitions. [2022-04-07 01:09:50,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-04-07 01:09:50,199 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:09:50,199 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:09:50,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-04-07 01:09:50,413 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:09:50,414 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:09:50,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:09:50,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1320781830, now seen corresponding path program 1 times [2022-04-07 01:09:50,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:09:50,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [753799865] [2022-04-07 01:09:50,417 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:09:50,417 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:09:50,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1320781830, now seen corresponding path program 2 times [2022-04-07 01:09:50,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:09:50,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855379447] [2022-04-07 01:09:50,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:09:50,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:09:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:50,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:09:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:50,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:09:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:50,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:09:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:50,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:09:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:50,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:09:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:50,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:09:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:50,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:09:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:50,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-07 01:09:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:50,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:09:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:50,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:09:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:50,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 01:09:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:50,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:09:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:09:50,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:09:50,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:09:50,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855379447] [2022-04-07 01:09:50,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855379447] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:09:50,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929972581] [2022-04-07 01:09:50,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:09:50,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:09:50,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:09:50,931 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:09:50,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-04-07 01:09:53,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:09:53,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:09:53,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:09:53,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:09:53,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:09:53,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:09:53,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929972581] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:09:53,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:09:53,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [10] total 24 [2022-04-07 01:09:53,402 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:09:53,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [753799865] [2022-04-07 01:09:53,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [753799865] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:09:53,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:09:53,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:09:53,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365672858] [2022-04-07 01:09:53,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:09:53,403 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:09:53,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:09:53,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:09:53,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2022-04-07 01:09:53,403 INFO L87 Difference]: Start difference. First operand 3641 states and 5110 transitions. Second operand has 16 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:10:01,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:10:01,636 INFO L93 Difference]: Finished difference Result 6287 states and 8922 transitions. [2022-04-07 01:10:01,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-07 01:10:01,636 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 96 [2022-04-07 01:10:01,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:10:01,659 INFO L225 Difference]: With dead ends: 6287 [2022-04-07 01:10:01,659 INFO L226 Difference]: Without dead ends: 6269 [2022-04-07 01:10:01,661 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-04-07 01:10:01,662 INFO L913 BasicCegarLoop]: 2945 mSDtfsCounter, 2436 mSDsluCounter, 23711 mSDsCounter, 0 mSdLazyCounter, 10764 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2437 SdHoareTripleChecker+Valid, 26656 SdHoareTripleChecker+Invalid, 10791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 10764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-04-07 01:10:01,662 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2437 Valid, 26656 Invalid, 10791 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 10764 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-04-07 01:10:01,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6269 states. [2022-04-07 01:10:03,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6269 to 3662. [2022-04-07 01:10:03,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 2464 states have (on average 1.3287337662337662) internal successors, (3274), 2537 states have internal predecessors, (3274), 921 states have call successors, (921), 260 states have call predecessors, (921), 276 states have return successors, (944), 906 states have call predecessors, (944), 914 states have call successors, (944) [2022-04-07 01:10:03,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 5139 transitions. [2022-04-07 01:10:03,217 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 5139 transitions. Word has length 96 [2022-04-07 01:10:03,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:10:03,217 INFO L478 AbstractCegarLoop]: Abstraction has 3662 states and 5139 transitions. [2022-04-07 01:10:03,217 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:10:03,218 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 5139 transitions. [2022-04-07 01:10:03,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-04-07 01:10:03,219 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:10:03,219 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:10:03,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-04-07 01:10:03,435 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-04-07 01:10:03,436 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:10:03,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:10:03,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1012184443, now seen corresponding path program 1 times [2022-04-07 01:10:03,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:10:03,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [827804213] [2022-04-07 01:10:03,438 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:10:03,438 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:10:03,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1012184443, now seen corresponding path program 2 times [2022-04-07 01:10:03,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:10:03,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742833121] [2022-04-07 01:10:03,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:10:03,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:10:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:03,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:10:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:03,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:10:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:03,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:10:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:03,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:10:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:03,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:10:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:03,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:10:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:03,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:10:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:03,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-07 01:10:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:03,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:10:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:03,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:10:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:03,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 01:10:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:03,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:10:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:03,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:10:03,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:10:03,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742833121] [2022-04-07 01:10:03,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742833121] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:10:03,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881560197] [2022-04-07 01:10:03,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:10:03,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:10:03,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:10:03,910 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:10:03,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-04-07 01:10:05,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:10:05,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:10:06,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 2004 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:10:06,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:10:06,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:10:06,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:10:06,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881560197] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:10:06,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:10:06,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-04-07 01:10:06,391 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:10:06,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [827804213] [2022-04-07 01:10:06,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [827804213] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:10:06,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:10:06,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:10:06,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826493886] [2022-04-07 01:10:06,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:10:06,392 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:10:06,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:10:06,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:10:06,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-04-07 01:10:06,392 INFO L87 Difference]: Start difference. First operand 3662 states and 5139 transitions. Second operand has 16 states, 16 states have (on average 4.75) internal successors, (76), 12 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:10:14,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:10:14,029 INFO L93 Difference]: Finished difference Result 6286 states and 8920 transitions. [2022-04-07 01:10:14,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-07 01:10:14,029 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 12 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2022-04-07 01:10:14,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:10:14,043 INFO L225 Difference]: With dead ends: 6286 [2022-04-07 01:10:14,044 INFO L226 Difference]: Without dead ends: 6265 [2022-04-07 01:10:14,045 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-04-07 01:10:14,045 INFO L913 BasicCegarLoop]: 2962 mSDtfsCounter, 2438 mSDsluCounter, 24165 mSDsCounter, 0 mSdLazyCounter, 9890 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2439 SdHoareTripleChecker+Valid, 27127 SdHoareTripleChecker+Invalid, 9918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 9890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-04-07 01:10:14,046 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2439 Valid, 27127 Invalid, 9918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 9890 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-04-07 01:10:14,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6265 states. [2022-04-07 01:10:15,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6265 to 3662. [2022-04-07 01:10:15,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 2464 states have (on average 1.3287337662337662) internal successors, (3274), 2537 states have internal predecessors, (3274), 921 states have call successors, (921), 260 states have call predecessors, (921), 276 states have return successors, (943), 906 states have call predecessors, (943), 914 states have call successors, (943) [2022-04-07 01:10:15,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 5138 transitions. [2022-04-07 01:10:15,636 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 5138 transitions. Word has length 102 [2022-04-07 01:10:15,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:10:15,636 INFO L478 AbstractCegarLoop]: Abstraction has 3662 states and 5138 transitions. [2022-04-07 01:10:15,636 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 12 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:10:15,636 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 5138 transitions. [2022-04-07 01:10:15,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-04-07 01:10:15,637 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:10:15,637 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:10:15,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-04-07 01:10:15,859 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-04-07 01:10:15,859 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:10:15,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:10:15,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1908271104, now seen corresponding path program 1 times [2022-04-07 01:10:15,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:10:15,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [154853690] [2022-04-07 01:10:15,862 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:10:15,862 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:10:15,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1908271104, now seen corresponding path program 2 times [2022-04-07 01:10:15,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:10:15,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184682989] [2022-04-07 01:10:15,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:10:15,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:10:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:16,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:10:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:16,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:10:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:16,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:10:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:16,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:10:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:16,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:10:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:16,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:10:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:16,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:10:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:16,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 01:10:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:16,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:10:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:16,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:10:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:16,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 01:10:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:16,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:10:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:16,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:10:16,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:10:16,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184682989] [2022-04-07 01:10:16,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184682989] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:10:16,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672999897] [2022-04-07 01:10:16,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:10:16,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:10:16,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:10:16,289 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:10:16,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-04-07 01:10:18,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:10:18,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:10:18,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 1956 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:10:18,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:10:18,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:10:18,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:10:18,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672999897] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:10:18,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:10:18,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [10] total 24 [2022-04-07 01:10:18,869 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:10:18,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [154853690] [2022-04-07 01:10:18,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [154853690] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:10:18,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:10:18,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:10:18,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893426811] [2022-04-07 01:10:18,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:10:18,869 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:10:18,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:10:18,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:10:18,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2022-04-07 01:10:18,870 INFO L87 Difference]: Start difference. First operand 3662 states and 5138 transitions. Second operand has 16 states, 16 states have (on average 4.3125) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:10:26,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:10:26,970 INFO L93 Difference]: Finished difference Result 6282 states and 8915 transitions. [2022-04-07 01:10:26,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-07 01:10:26,972 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 95 [2022-04-07 01:10:26,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:10:26,984 INFO L225 Difference]: With dead ends: 6282 [2022-04-07 01:10:26,984 INFO L226 Difference]: Without dead ends: 6261 [2022-04-07 01:10:26,986 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-04-07 01:10:27,005 INFO L913 BasicCegarLoop]: 2891 mSDtfsCounter, 2435 mSDsluCounter, 24240 mSDsCounter, 0 mSdLazyCounter, 9857 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2436 SdHoareTripleChecker+Valid, 27131 SdHoareTripleChecker+Invalid, 9886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 9857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:10:27,006 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2436 Valid, 27131 Invalid, 9886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 9857 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-04-07 01:10:27,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6261 states. [2022-04-07 01:10:28,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6261 to 3659. [2022-04-07 01:10:28,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3659 states, 2462 states have (on average 1.3290008123476849) internal successors, (3272), 2535 states have internal predecessors, (3272), 921 states have call successors, (921), 260 states have call predecessors, (921), 275 states have return successors, (941), 905 states have call predecessors, (941), 914 states have call successors, (941) [2022-04-07 01:10:28,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3659 states to 3659 states and 5134 transitions. [2022-04-07 01:10:28,682 INFO L78 Accepts]: Start accepts. Automaton has 3659 states and 5134 transitions. Word has length 95 [2022-04-07 01:10:28,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:10:28,682 INFO L478 AbstractCegarLoop]: Abstraction has 3659 states and 5134 transitions. [2022-04-07 01:10:28,683 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:10:28,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3659 states and 5134 transitions. [2022-04-07 01:10:28,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-04-07 01:10:28,684 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:10:28,684 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:10:28,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-04-07 01:10:28,897 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-04-07 01:10:28,897 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:10:28,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:10:28,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1579773890, now seen corresponding path program 1 times [2022-04-07 01:10:28,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:10:28,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1762508856] [2022-04-07 01:10:28,900 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:10:28,900 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:10:28,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1579773890, now seen corresponding path program 2 times [2022-04-07 01:10:28,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:10:28,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839061497] [2022-04-07 01:10:28,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:10:28,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:10:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:29,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:10:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:29,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:10:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:29,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:10:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:29,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:10:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:29,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:10:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:29,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:10:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:29,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:10:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:29,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-07 01:10:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:29,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:10:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:29,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:10:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:29,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 01:10:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:29,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:10:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:10:29,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:10:29,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839061497] [2022-04-07 01:10:29,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839061497] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:10:29,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517273276] [2022-04-07 01:10:29,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:10:29,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:10:29,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:10:29,328 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:10:29,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-04-07 01:10:31,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:10:31,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:10:31,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 1999 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:10:31,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:10:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:10:31,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:10:31,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517273276] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:10:31,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:10:31,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-04-07 01:10:31,850 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:10:31,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1762508856] [2022-04-07 01:10:31,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1762508856] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:10:31,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:10:31,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:10:31,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234115624] [2022-04-07 01:10:31,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:10:31,851 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:10:31,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:10:31,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:10:31,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-04-07 01:10:31,851 INFO L87 Difference]: Start difference. First operand 3659 states and 5134 transitions. Second operand has 16 states, 16 states have (on average 5.0) internal successors, (80), 12 states have internal predecessors, (80), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:10:40,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:10:40,383 INFO L93 Difference]: Finished difference Result 6278 states and 8910 transitions. [2022-04-07 01:10:40,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-07 01:10:40,383 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0) internal successors, (80), 12 states have internal predecessors, (80), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 106 [2022-04-07 01:10:40,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:10:40,399 INFO L225 Difference]: With dead ends: 6278 [2022-04-07 01:10:40,399 INFO L226 Difference]: Without dead ends: 6257 [2022-04-07 01:10:40,402 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-04-07 01:10:40,404 INFO L913 BasicCegarLoop]: 2922 mSDtfsCounter, 2419 mSDsluCounter, 28845 mSDsCounter, 0 mSdLazyCounter, 10772 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2420 SdHoareTripleChecker+Valid, 31767 SdHoareTripleChecker+Invalid, 10794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 10772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-04-07 01:10:40,404 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2420 Valid, 31767 Invalid, 10794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 10772 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-04-07 01:10:40,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6257 states. [2022-04-07 01:10:42,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6257 to 3659. [2022-04-07 01:10:42,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3659 states, 2462 states have (on average 1.3290008123476849) internal successors, (3272), 2535 states have internal predecessors, (3272), 921 states have call successors, (921), 260 states have call predecessors, (921), 275 states have return successors, (940), 905 states have call predecessors, (940), 914 states have call successors, (940) [2022-04-07 01:10:42,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3659 states to 3659 states and 5133 transitions. [2022-04-07 01:10:42,045 INFO L78 Accepts]: Start accepts. Automaton has 3659 states and 5133 transitions. Word has length 106 [2022-04-07 01:10:42,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:10:42,045 INFO L478 AbstractCegarLoop]: Abstraction has 3659 states and 5133 transitions. [2022-04-07 01:10:42,045 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0) internal successors, (80), 12 states have internal predecessors, (80), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:10:42,045 INFO L276 IsEmpty]: Start isEmpty. Operand 3659 states and 5133 transitions. [2022-04-07 01:10:42,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-04-07 01:10:42,046 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:10:42,047 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:10:42,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-04-07 01:10:42,268 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-04-07 01:10:42,268 INFO L403 AbstractCegarLoop]: === Iteration 71 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:10:42,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:10:42,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1494471512, now seen corresponding path program 1 times [2022-04-07 01:10:42,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:10:42,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2068689161] [2022-04-07 01:10:42,289 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:10:42,289 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:10:42,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1494471512, now seen corresponding path program 2 times [2022-04-07 01:10:42,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:10:42,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304413703] [2022-04-07 01:10:42,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:10:42,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:10:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:42,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:10:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:42,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:10:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:42,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:10:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:42,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:10:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:42,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:10:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:42,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:10:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:42,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:10:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:42,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-07 01:10:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:42,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:10:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:42,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:10:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:42,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 01:10:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:42,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:10:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:42,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:10:42,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:10:42,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304413703] [2022-04-07 01:10:42,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304413703] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:10:42,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137470066] [2022-04-07 01:10:42,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:10:42,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:10:42,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:10:42,753 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:10:42,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-04-07 01:10:44,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:10:44,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:10:44,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:10:44,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:10:45,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:10:45,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:10:45,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137470066] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:10:45,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:10:45,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-04-07 01:10:45,360 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:10:45,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2068689161] [2022-04-07 01:10:45,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2068689161] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:10:45,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:10:45,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:10:45,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835335095] [2022-04-07 01:10:45,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:10:45,360 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:10:45,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:10:45,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:10:45,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-04-07 01:10:45,361 INFO L87 Difference]: Start difference. First operand 3659 states and 5133 transitions. Second operand has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:10:53,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:10:53,614 INFO L93 Difference]: Finished difference Result 6274 states and 8905 transitions. [2022-04-07 01:10:53,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-07 01:10:53,615 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2022-04-07 01:10:53,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:10:53,628 INFO L225 Difference]: With dead ends: 6274 [2022-04-07 01:10:53,628 INFO L226 Difference]: Without dead ends: 6253 [2022-04-07 01:10:53,630 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-04-07 01:10:53,630 INFO L913 BasicCegarLoop]: 2913 mSDtfsCounter, 2426 mSDsluCounter, 22475 mSDsCounter, 0 mSdLazyCounter, 9797 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2427 SdHoareTripleChecker+Valid, 25388 SdHoareTripleChecker+Invalid, 9822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 9797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:10:53,630 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2427 Valid, 25388 Invalid, 9822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 9797 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-04-07 01:10:53,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6253 states. [2022-04-07 01:10:55,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6253 to 3659. [2022-04-07 01:10:55,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3659 states, 2462 states have (on average 1.3290008123476849) internal successors, (3272), 2535 states have internal predecessors, (3272), 921 states have call successors, (921), 260 states have call predecessors, (921), 275 states have return successors, (939), 905 states have call predecessors, (939), 914 states have call successors, (939) [2022-04-07 01:10:55,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3659 states to 3659 states and 5132 transitions. [2022-04-07 01:10:55,262 INFO L78 Accepts]: Start accepts. Automaton has 3659 states and 5132 transitions. Word has length 103 [2022-04-07 01:10:55,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:10:55,262 INFO L478 AbstractCegarLoop]: Abstraction has 3659 states and 5132 transitions. [2022-04-07 01:10:55,262 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:10:55,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3659 states and 5132 transitions. [2022-04-07 01:10:55,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-04-07 01:10:55,264 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:10:55,264 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:10:55,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-04-07 01:10:55,482 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:10:55,483 INFO L403 AbstractCegarLoop]: === Iteration 72 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:10:55,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:10:55,483 INFO L85 PathProgramCache]: Analyzing trace with hash -720706508, now seen corresponding path program 1 times [2022-04-07 01:10:55,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:10:55,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1355587999] [2022-04-07 01:10:55,485 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:10:55,485 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:10:55,485 INFO L85 PathProgramCache]: Analyzing trace with hash -720706508, now seen corresponding path program 2 times [2022-04-07 01:10:55,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:10:55,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078758944] [2022-04-07 01:10:55,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:10:55,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:10:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:55,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:10:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:55,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:10:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:55,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:10:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:55,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:10:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:55,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:10:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:55,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:10:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:55,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:10:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:56,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:10:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:56,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:10:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:56,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:10:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:56,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 01:10:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:56,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:10:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:10:56,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:10:56,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:10:56,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078758944] [2022-04-07 01:10:56,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078758944] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:10:56,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053805490] [2022-04-07 01:10:56,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:10:56,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:10:56,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:10:56,209 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:10:56,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-04-07 01:10:58,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:10:58,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:10:58,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 1996 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:10:58,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:10:58,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:10:58,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:10:58,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053805490] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:10:58,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:10:58,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-04-07 01:10:58,914 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:10:58,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1355587999] [2022-04-07 01:10:58,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1355587999] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:10:58,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:10:58,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:10:58,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799041351] [2022-04-07 01:10:58,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:10:58,915 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:10:58,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:10:58,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:10:58,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-04-07 01:10:58,915 INFO L87 Difference]: Start difference. First operand 3659 states and 5132 transitions. Second operand has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:11:07,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:11:07,211 INFO L93 Difference]: Finished difference Result 6270 states and 8900 transitions. [2022-04-07 01:11:07,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-07 01:11:07,212 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2022-04-07 01:11:07,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:11:07,227 INFO L225 Difference]: With dead ends: 6270 [2022-04-07 01:11:07,228 INFO L226 Difference]: Without dead ends: 6249 [2022-04-07 01:11:07,230 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-04-07 01:11:07,234 INFO L913 BasicCegarLoop]: 2879 mSDtfsCounter, 2422 mSDsluCounter, 22382 mSDsCounter, 0 mSdLazyCounter, 9774 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2423 SdHoareTripleChecker+Valid, 25261 SdHoareTripleChecker+Invalid, 9798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 9774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:11:07,234 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2423 Valid, 25261 Invalid, 9798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 9774 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-04-07 01:11:07,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6249 states. [2022-04-07 01:11:08,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6249 to 3659. [2022-04-07 01:11:08,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3659 states, 2462 states have (on average 1.3290008123476849) internal successors, (3272), 2535 states have internal predecessors, (3272), 921 states have call successors, (921), 260 states have call predecessors, (921), 275 states have return successors, (938), 905 states have call predecessors, (938), 914 states have call successors, (938) [2022-04-07 01:11:08,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3659 states to 3659 states and 5131 transitions. [2022-04-07 01:11:08,959 INFO L78 Accepts]: Start accepts. Automaton has 3659 states and 5131 transitions. Word has length 103 [2022-04-07 01:11:08,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:11:08,960 INFO L478 AbstractCegarLoop]: Abstraction has 3659 states and 5131 transitions. [2022-04-07 01:11:08,960 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:11:08,960 INFO L276 IsEmpty]: Start isEmpty. Operand 3659 states and 5131 transitions. [2022-04-07 01:11:08,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-04-07 01:11:08,968 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:11:08,968 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:11:09,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-04-07 01:11:09,191 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:11:09,191 INFO L403 AbstractCegarLoop]: === Iteration 73 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:11:09,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:11:09,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1608832473, now seen corresponding path program 1 times [2022-04-07 01:11:09,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:11:09,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2019000053] [2022-04-07 01:11:09,194 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:11:09,194 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:11:09,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1608832473, now seen corresponding path program 2 times [2022-04-07 01:11:09,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:11:09,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678303509] [2022-04-07 01:11:09,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:11:09,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:11:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:09,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:11:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:09,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:11:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:09,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:11:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:09,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:11:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:09,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:11:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:09,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:11:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:09,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:11:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:09,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:11:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:09,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 01:11:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:09,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:11:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:09,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 01:11:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:09,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:11:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:09,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:11:09,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:11:09,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678303509] [2022-04-07 01:11:09,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678303509] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:11:09,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724775702] [2022-04-07 01:11:09,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:11:09,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:11:09,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:11:09,731 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:11:09,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-04-07 01:11:12,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:11:12,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:11:12,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 1978 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:11:12,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:11:12,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:11:12,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:11:12,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724775702] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:11:12,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:11:12,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-04-07 01:11:12,563 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:11:12,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2019000053] [2022-04-07 01:11:12,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2019000053] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:11:12,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:11:12,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:11:12,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714670591] [2022-04-07 01:11:12,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:11:12,564 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:11:12,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:11:12,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:11:12,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-04-07 01:11:12,564 INFO L87 Difference]: Start difference. First operand 3659 states and 5131 transitions. Second operand has 16 states, 16 states have (on average 4.75) internal successors, (76), 12 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:11:21,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:11:21,049 INFO L93 Difference]: Finished difference Result 6266 states and 8895 transitions. [2022-04-07 01:11:21,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-07 01:11:21,049 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 12 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2022-04-07 01:11:21,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:11:21,063 INFO L225 Difference]: With dead ends: 6266 [2022-04-07 01:11:21,064 INFO L226 Difference]: Without dead ends: 6245 [2022-04-07 01:11:21,065 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-04-07 01:11:21,065 INFO L913 BasicCegarLoop]: 3207 mSDtfsCounter, 2412 mSDsluCounter, 23776 mSDsCounter, 0 mSdLazyCounter, 9765 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2413 SdHoareTripleChecker+Valid, 26983 SdHoareTripleChecker+Invalid, 9786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 9765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:11:21,065 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2413 Valid, 26983 Invalid, 9786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 9765 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-04-07 01:11:21,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6245 states. [2022-04-07 01:11:22,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6245 to 3659. [2022-04-07 01:11:22,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3659 states, 2462 states have (on average 1.3290008123476849) internal successors, (3272), 2535 states have internal predecessors, (3272), 921 states have call successors, (921), 260 states have call predecessors, (921), 275 states have return successors, (937), 905 states have call predecessors, (937), 914 states have call successors, (937) [2022-04-07 01:11:22,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3659 states to 3659 states and 5130 transitions. [2022-04-07 01:11:22,798 INFO L78 Accepts]: Start accepts. Automaton has 3659 states and 5130 transitions. Word has length 102 [2022-04-07 01:11:22,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:11:22,798 INFO L478 AbstractCegarLoop]: Abstraction has 3659 states and 5130 transitions. [2022-04-07 01:11:22,798 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 12 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:11:22,799 INFO L276 IsEmpty]: Start isEmpty. Operand 3659 states and 5130 transitions. [2022-04-07 01:11:22,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-04-07 01:11:22,801 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:11:22,801 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:11:22,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-04-07 01:11:23,021 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:11:23,022 INFO L403 AbstractCegarLoop]: === Iteration 74 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:11:23,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:11:23,022 INFO L85 PathProgramCache]: Analyzing trace with hash 2068306364, now seen corresponding path program 1 times [2022-04-07 01:11:23,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:11:23,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1151577511] [2022-04-07 01:11:23,024 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:11:23,024 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:11:23,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2068306364, now seen corresponding path program 2 times [2022-04-07 01:11:23,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:11:23,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955854832] [2022-04-07 01:11:23,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:11:23,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:11:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:23,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:11:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:23,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:11:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:23,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:11:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:23,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-07 01:11:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:23,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 01:11:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:23,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:11:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:23,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-07 01:11:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:23,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:11:23,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:11:23,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955854832] [2022-04-07 01:11:23,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955854832] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:11:23,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651131287] [2022-04-07 01:11:23,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:11:23,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:11:23,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:11:23,417 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:11:23,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-04-07 01:11:25,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:11:25,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:11:25,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-07 01:11:25,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:11:25,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:11:25,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:11:25,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651131287] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:11:25,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:11:25,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-04-07 01:11:25,849 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:11:25,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1151577511] [2022-04-07 01:11:25,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1151577511] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:11:25,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:11:25,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 01:11:25,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309851029] [2022-04-07 01:11:25,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:11:25,849 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 01:11:25,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:11:25,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 01:11:25,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-04-07 01:11:25,850 INFO L87 Difference]: Start difference. First operand 3659 states and 5130 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-07 01:11:27,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:11:27,595 INFO L93 Difference]: Finished difference Result 3718 states and 5199 transitions. [2022-04-07 01:11:27,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 01:11:27,595 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 93 [2022-04-07 01:11:27,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:11:27,605 INFO L225 Difference]: With dead ends: 3718 [2022-04-07 01:11:27,605 INFO L226 Difference]: Without dead ends: 3673 [2022-04-07 01:11:27,607 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:11:27,607 INFO L913 BasicCegarLoop]: 2471 mSDtfsCounter, 33 mSDsluCounter, 9826 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 12297 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:11:27,607 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 12297 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 01:11:27,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3673 states. [2022-04-07 01:11:29,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3673 to 3658. [2022-04-07 01:11:29,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 2461 states have (on average 1.329134498171475) internal successors, (3271), 2534 states have internal predecessors, (3271), 921 states have call successors, (921), 260 states have call predecessors, (921), 275 states have return successors, (937), 905 states have call predecessors, (937), 914 states have call successors, (937) [2022-04-07 01:11:29,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 5129 transitions. [2022-04-07 01:11:29,353 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 5129 transitions. Word has length 93 [2022-04-07 01:11:29,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:11:29,354 INFO L478 AbstractCegarLoop]: Abstraction has 3658 states and 5129 transitions. [2022-04-07 01:11:29,354 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-07 01:11:29,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 5129 transitions. [2022-04-07 01:11:29,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-04-07 01:11:29,355 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:11:29,355 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:11:29,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-04-07 01:11:29,579 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2022-04-07 01:11:29,579 INFO L403 AbstractCegarLoop]: === Iteration 75 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:11:29,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:11:29,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1244564533, now seen corresponding path program 1 times [2022-04-07 01:11:29,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:11:29,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1400576566] [2022-04-07 01:11:29,582 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:11:29,582 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:11:29,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1244564533, now seen corresponding path program 2 times [2022-04-07 01:11:29,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:11:29,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345810880] [2022-04-07 01:11:29,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:11:29,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:11:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:29,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:11:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:29,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:11:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:29,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:11:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:29,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:11:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:29,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:11:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:29,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:11:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:29,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:11:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:29,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-07 01:11:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:30,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:11:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:30,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:11:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:30,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:11:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:30,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:11:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:30,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:11:30,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:11:30,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345810880] [2022-04-07 01:11:30,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345810880] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:11:30,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880750360] [2022-04-07 01:11:30,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:11:30,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:11:30,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:11:30,040 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:11:30,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-04-07 01:11:32,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:11:32,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:11:32,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 2005 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:11:32,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:11:32,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:11:32,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:11:32,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880750360] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:11:32,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:11:32,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-04-07 01:11:32,877 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:11:32,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1400576566] [2022-04-07 01:11:32,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1400576566] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:11:32,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:11:32,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:11:32,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543847350] [2022-04-07 01:11:32,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:11:32,878 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:11:32,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:11:32,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:11:32,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-04-07 01:11:32,878 INFO L87 Difference]: Start difference. First operand 3658 states and 5129 transitions. Second operand has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:11:40,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:11:40,864 INFO L93 Difference]: Finished difference Result 6273 states and 8902 transitions. [2022-04-07 01:11:40,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-07 01:11:40,864 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2022-04-07 01:11:40,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:11:40,880 INFO L225 Difference]: With dead ends: 6273 [2022-04-07 01:11:40,880 INFO L226 Difference]: Without dead ends: 6252 [2022-04-07 01:11:40,881 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-04-07 01:11:40,882 INFO L913 BasicCegarLoop]: 4058 mSDtfsCounter, 1897 mSDsluCounter, 35569 mSDsCounter, 0 mSdLazyCounter, 9107 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1898 SdHoareTripleChecker+Valid, 39627 SdHoareTripleChecker+Invalid, 9125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 9107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-04-07 01:11:40,882 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1898 Valid, 39627 Invalid, 9125 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 9107 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-04-07 01:11:40,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6252 states. [2022-04-07 01:11:42,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6252 to 3676. [2022-04-07 01:11:42,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 2473 states have (on average 1.3275374039627983) internal successors, (3283), 2547 states have internal predecessors, (3283), 923 states have call successors, (923), 262 states have call predecessors, (923), 279 states have return successors, (948), 908 states have call predecessors, (948), 916 states have call successors, (948) [2022-04-07 01:11:42,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 5154 transitions. [2022-04-07 01:11:42,642 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 5154 transitions. Word has length 103 [2022-04-07 01:11:42,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:11:42,643 INFO L478 AbstractCegarLoop]: Abstraction has 3676 states and 5154 transitions. [2022-04-07 01:11:42,643 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:11:42,643 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 5154 transitions. [2022-04-07 01:11:42,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-04-07 01:11:42,645 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:11:42,645 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:11:42,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-04-07 01:11:42,871 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:11:42,871 INFO L403 AbstractCegarLoop]: === Iteration 76 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:11:42,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:11:42,872 INFO L85 PathProgramCache]: Analyzing trace with hash -32586170, now seen corresponding path program 1 times [2022-04-07 01:11:42,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:11:42,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1097677456] [2022-04-07 01:11:42,874 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:11:42,874 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:11:42,874 INFO L85 PathProgramCache]: Analyzing trace with hash -32586170, now seen corresponding path program 2 times [2022-04-07 01:11:42,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:11:42,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376066951] [2022-04-07 01:11:42,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:11:42,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:11:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:43,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:11:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:43,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:11:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:43,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:11:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:43,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:11:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:43,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:11:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:43,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:11:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:43,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:11:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:43,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-07 01:11:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:43,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:11:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:43,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:11:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:43,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:11:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:43,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:11:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:43,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:11:43,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:11:43,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376066951] [2022-04-07 01:11:43,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376066951] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:11:43,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84492180] [2022-04-07 01:11:43,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:11:43,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:11:43,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:11:43,422 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:11:43,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-04-07 01:11:45,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:11:45,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:11:45,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 2000 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:11:45,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:11:46,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:11:46,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:11:46,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84492180] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:11:46,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:11:46,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-04-07 01:11:46,356 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:11:46,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1097677456] [2022-04-07 01:11:46,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1097677456] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:11:46,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:11:46,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:11:46,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506381302] [2022-04-07 01:11:46,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:11:46,357 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:11:46,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:11:46,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:11:46,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-04-07 01:11:46,358 INFO L87 Difference]: Start difference. First operand 3676 states and 5154 transitions. Second operand has 16 states, 16 states have (on average 5.0625) internal successors, (81), 12 states have internal predecessors, (81), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:11:54,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:11:54,533 INFO L93 Difference]: Finished difference Result 6269 states and 8897 transitions. [2022-04-07 01:11:54,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-07 01:11:54,534 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 12 states have internal predecessors, (81), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 107 [2022-04-07 01:11:54,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:11:54,550 INFO L225 Difference]: With dead ends: 6269 [2022-04-07 01:11:54,550 INFO L226 Difference]: Without dead ends: 6248 [2022-04-07 01:11:54,552 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-04-07 01:11:54,552 INFO L913 BasicCegarLoop]: 4328 mSDtfsCounter, 1896 mSDsluCounter, 23326 mSDsCounter, 0 mSdLazyCounter, 8995 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 27654 SdHoareTripleChecker+Invalid, 9014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 8995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-04-07 01:11:54,552 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1897 Valid, 27654 Invalid, 9014 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 8995 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-04-07 01:11:54,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6248 states. [2022-04-07 01:11:56,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6248 to 3676. [2022-04-07 01:11:56,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 2473 states have (on average 1.3275374039627983) internal successors, (3283), 2547 states have internal predecessors, (3283), 923 states have call successors, (923), 262 states have call predecessors, (923), 279 states have return successors, (947), 908 states have call predecessors, (947), 916 states have call successors, (947) [2022-04-07 01:11:56,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 5153 transitions. [2022-04-07 01:11:56,383 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 5153 transitions. Word has length 107 [2022-04-07 01:11:56,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:11:56,383 INFO L478 AbstractCegarLoop]: Abstraction has 3676 states and 5153 transitions. [2022-04-07 01:11:56,383 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 12 states have internal predecessors, (81), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:11:56,383 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 5153 transitions. [2022-04-07 01:11:56,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-04-07 01:11:56,388 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:11:56,388 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:11:56,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-04-07 01:11:56,611 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:11:56,611 INFO L403 AbstractCegarLoop]: === Iteration 77 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:11:56,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:11:56,612 INFO L85 PathProgramCache]: Analyzing trace with hash 863893830, now seen corresponding path program 1 times [2022-04-07 01:11:56,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:11:56,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [815798763] [2022-04-07 01:11:56,614 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:11:56,614 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:11:56,614 INFO L85 PathProgramCache]: Analyzing trace with hash 863893830, now seen corresponding path program 2 times [2022-04-07 01:11:56,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:11:56,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004933228] [2022-04-07 01:11:56,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:11:56,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:11:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:56,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:11:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:56,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:11:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:56,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:11:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:56,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:11:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:56,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:11:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:56,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:11:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:56,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:11:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:57,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:11:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:57,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:11:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:57,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:11:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:57,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:11:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:57,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:11:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:11:57,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:11:57,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:11:57,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004933228] [2022-04-07 01:11:57,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004933228] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:11:57,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931701705] [2022-04-07 01:11:57,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:11:57,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:11:57,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:11:57,215 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:11:57,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-04-07 01:11:59,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:11:59,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:11:59,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:11:59,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:12:00,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:12:00,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:12:00,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931701705] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:12:00,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:12:00,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-04-07 01:12:00,126 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:12:00,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [815798763] [2022-04-07 01:12:00,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [815798763] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:12:00,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:12:00,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:12:00,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680593226] [2022-04-07 01:12:00,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:12:00,127 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:12:00,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:12:00,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:12:00,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-04-07 01:12:00,127 INFO L87 Difference]: Start difference. First operand 3676 states and 5153 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:12:07,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:12:07,101 INFO L93 Difference]: Finished difference Result 6265 states and 8892 transitions. [2022-04-07 01:12:07,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-07 01:12:07,102 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 104 [2022-04-07 01:12:07,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:12:07,128 INFO L225 Difference]: With dead ends: 6265 [2022-04-07 01:12:07,128 INFO L226 Difference]: Without dead ends: 6244 [2022-04-07 01:12:07,129 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-04-07 01:12:07,129 INFO L913 BasicCegarLoop]: 4046 mSDtfsCounter, 1896 mSDsluCounter, 27930 mSDsCounter, 0 mSdLazyCounter, 8269 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 31976 SdHoareTripleChecker+Invalid, 8287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 8269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-04-07 01:12:07,129 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1897 Valid, 31976 Invalid, 8287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 8269 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-04-07 01:12:07,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6244 states. [2022-04-07 01:12:08,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6244 to 3676. [2022-04-07 01:12:08,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 2473 states have (on average 1.3275374039627983) internal successors, (3283), 2547 states have internal predecessors, (3283), 923 states have call successors, (923), 262 states have call predecessors, (923), 279 states have return successors, (946), 908 states have call predecessors, (946), 916 states have call successors, (946) [2022-04-07 01:12:08,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 5152 transitions. [2022-04-07 01:12:08,960 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 5152 transitions. Word has length 104 [2022-04-07 01:12:08,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:12:08,960 INFO L478 AbstractCegarLoop]: Abstraction has 3676 states and 5152 transitions. [2022-04-07 01:12:08,960 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:12:08,960 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 5152 transitions. [2022-04-07 01:12:08,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-04-07 01:12:08,962 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:12:08,962 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:12:08,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-04-07 01:12:09,195 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-04-07 01:12:09,195 INFO L403 AbstractCegarLoop]: === Iteration 78 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:12:09,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:12:09,196 INFO L85 PathProgramCache]: Analyzing trace with hash 786695782, now seen corresponding path program 1 times [2022-04-07 01:12:09,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:12:09,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2088273904] [2022-04-07 01:12:09,200 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:12:09,200 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:12:09,200 INFO L85 PathProgramCache]: Analyzing trace with hash 786695782, now seen corresponding path program 2 times [2022-04-07 01:12:09,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:12:09,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149053564] [2022-04-07 01:12:09,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:12:09,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:12:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:09,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:12:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:09,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:12:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:09,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:12:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:09,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:12:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:09,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:12:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:09,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:12:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:09,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:12:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:09,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-07 01:12:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:09,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:12:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:09,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:12:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:09,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:12:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:09,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:12:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:09,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:12:09,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:12:09,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149053564] [2022-04-07 01:12:09,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149053564] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:12:09,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334253855] [2022-04-07 01:12:09,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:12:09,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:12:09,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:12:09,776 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:12:09,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-04-07 01:12:12,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:12:12,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:12:12,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 1998 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:12:12,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:12:12,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:12:12,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:12:12,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334253855] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:12:12,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:12:12,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-04-07 01:12:12,773 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:12:12,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2088273904] [2022-04-07 01:12:12,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2088273904] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:12:12,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:12:12,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:12:12,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952658862] [2022-04-07 01:12:12,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:12:12,774 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:12:12,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:12:12,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:12:12,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-04-07 01:12:12,774 INFO L87 Difference]: Start difference. First operand 3676 states and 5152 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:12:21,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:12:21,036 INFO L93 Difference]: Finished difference Result 6261 states and 8887 transitions. [2022-04-07 01:12:21,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-07 01:12:21,037 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 104 [2022-04-07 01:12:21,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:12:21,053 INFO L225 Difference]: With dead ends: 6261 [2022-04-07 01:12:21,053 INFO L226 Difference]: Without dead ends: 6240 [2022-04-07 01:12:21,056 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-04-07 01:12:21,056 INFO L913 BasicCegarLoop]: 4326 mSDtfsCounter, 1885 mSDsluCounter, 47348 mSDsCounter, 0 mSdLazyCounter, 9092 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 51674 SdHoareTripleChecker+Invalid, 9107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 9092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-04-07 01:12:21,056 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1886 Valid, 51674 Invalid, 9107 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 9092 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-04-07 01:12:21,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2022-04-07 01:12:22,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 3676. [2022-04-07 01:12:22,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 2473 states have (on average 1.3275374039627983) internal successors, (3283), 2547 states have internal predecessors, (3283), 923 states have call successors, (923), 262 states have call predecessors, (923), 279 states have return successors, (945), 908 states have call predecessors, (945), 916 states have call successors, (945) [2022-04-07 01:12:22,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 5151 transitions. [2022-04-07 01:12:22,956 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 5151 transitions. Word has length 104 [2022-04-07 01:12:22,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:12:22,956 INFO L478 AbstractCegarLoop]: Abstraction has 3676 states and 5151 transitions. [2022-04-07 01:12:22,956 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:12:22,956 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 5151 transitions. [2022-04-07 01:12:22,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-04-07 01:12:22,958 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:12:22,958 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:12:22,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-04-07 01:12:23,179 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-04-07 01:12:23,179 INFO L403 AbstractCegarLoop]: === Iteration 79 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:12:23,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:12:23,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1331744699, now seen corresponding path program 1 times [2022-04-07 01:12:23,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:12:23,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1131728189] [2022-04-07 01:12:23,182 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:12:23,182 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:12:23,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1331744699, now seen corresponding path program 2 times [2022-04-07 01:12:23,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:12:23,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312154064] [2022-04-07 01:12:23,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:12:23,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:12:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:23,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:12:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:23,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:12:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:23,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:12:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:23,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:12:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:23,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:12:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:23,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:12:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:23,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:12:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:23,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-07 01:12:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:23,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:12:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:23,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-07 01:12:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:23,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:12:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:23,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:12:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:23,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:12:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:23,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:12:23,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:12:23,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312154064] [2022-04-07 01:12:23,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312154064] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:12:23,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042903291] [2022-04-07 01:12:23,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:12:23,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:12:23,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:12:23,752 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:12:23,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-04-07 01:12:27,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:12:27,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:12:27,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 2024 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:12:27,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:12:27,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:12:27,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:12:27,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042903291] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:12:27,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:12:27,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-04-07 01:12:27,731 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:12:27,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1131728189] [2022-04-07 01:12:27,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1131728189] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:12:27,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:12:27,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:12:27,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266443711] [2022-04-07 01:12:27,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:12:27,731 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:12:27,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:12:27,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:12:27,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-04-07 01:12:27,732 INFO L87 Difference]: Start difference. First operand 3676 states and 5151 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 12 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13) [2022-04-07 01:12:34,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:12:34,992 INFO L93 Difference]: Finished difference Result 6257 states and 8882 transitions. [2022-04-07 01:12:34,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-07 01:12:34,992 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 12 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2022-04-07 01:12:35,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:12:35,033 INFO L225 Difference]: With dead ends: 6257 [2022-04-07 01:12:35,034 INFO L226 Difference]: Without dead ends: 6236 [2022-04-07 01:12:35,036 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-04-07 01:12:35,036 INFO L913 BasicCegarLoop]: 4253 mSDtfsCounter, 1888 mSDsluCounter, 26598 mSDsCounter, 0 mSdLazyCounter, 8211 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 30851 SdHoareTripleChecker+Invalid, 8227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 8211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-04-07 01:12:35,036 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1889 Valid, 30851 Invalid, 8227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 8211 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-04-07 01:12:35,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6236 states. [2022-04-07 01:12:37,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6236 to 3676. [2022-04-07 01:12:37,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 2473 states have (on average 1.3275374039627983) internal successors, (3283), 2547 states have internal predecessors, (3283), 923 states have call successors, (923), 262 states have call predecessors, (923), 279 states have return successors, (944), 908 states have call predecessors, (944), 916 states have call successors, (944) [2022-04-07 01:12:37,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 5150 transitions. [2022-04-07 01:12:37,049 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 5150 transitions. Word has length 113 [2022-04-07 01:12:37,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:12:37,049 INFO L478 AbstractCegarLoop]: Abstraction has 3676 states and 5150 transitions. [2022-04-07 01:12:37,050 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 12 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13) [2022-04-07 01:12:37,050 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 5150 transitions. [2022-04-07 01:12:37,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-04-07 01:12:37,051 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:12:37,051 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:12:37,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-04-07 01:12:37,259 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:12:37,259 INFO L403 AbstractCegarLoop]: === Iteration 80 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:12:37,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:12:37,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1429858466, now seen corresponding path program 1 times [2022-04-07 01:12:37,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:12:37,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2112601628] [2022-04-07 01:12:37,272 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:12:37,272 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:12:37,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1429858466, now seen corresponding path program 2 times [2022-04-07 01:12:37,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:12:37,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512056278] [2022-04-07 01:12:37,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:12:37,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:12:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:37,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:12:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:37,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:12:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:37,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:12:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:37,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:12:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:37,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:12:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:37,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:12:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:37,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:12:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:37,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-07 01:12:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:37,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:12:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:37,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:12:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:37,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:12:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:37,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:12:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:37,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:12:37,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:12:37,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512056278] [2022-04-07 01:12:37,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512056278] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:12:37,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096831009] [2022-04-07 01:12:37,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:12:37,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:12:37,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:12:37,827 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:12:37,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-04-07 01:12:40,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:12:40,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:12:40,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 1959 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:12:40,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:12:40,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:12:40,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:12:40,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096831009] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:12:40,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:12:40,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [10] total 24 [2022-04-07 01:12:40,907 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:12:40,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2112601628] [2022-04-07 01:12:40,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2112601628] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:12:40,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:12:40,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:12:40,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427210480] [2022-04-07 01:12:40,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:12:40,908 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:12:40,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:12:40,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:12:40,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2022-04-07 01:12:40,908 INFO L87 Difference]: Start difference. First operand 3676 states and 5150 transitions. Second operand has 16 states, 16 states have (on average 4.4375) internal successors, (71), 12 states have internal predecessors, (71), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:12:49,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:12:49,583 INFO L93 Difference]: Finished difference Result 6253 states and 8877 transitions. [2022-04-07 01:12:49,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-07 01:12:49,584 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 12 states have internal predecessors, (71), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 97 [2022-04-07 01:12:49,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:12:49,598 INFO L225 Difference]: With dead ends: 6253 [2022-04-07 01:12:49,598 INFO L226 Difference]: Without dead ends: 6235 [2022-04-07 01:12:49,600 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-04-07 01:12:49,600 INFO L913 BasicCegarLoop]: 4024 mSDtfsCounter, 1876 mSDsluCounter, 43774 mSDsCounter, 0 mSdLazyCounter, 9032 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1877 SdHoareTripleChecker+Valid, 47798 SdHoareTripleChecker+Invalid, 9046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 9032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:12:49,600 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1877 Valid, 47798 Invalid, 9046 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 9032 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-04-07 01:12:49,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6235 states. [2022-04-07 01:12:51,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6235 to 3679. [2022-04-07 01:12:51,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3679 states, 2475 states have (on average 1.3272727272727274) internal successors, (3285), 2549 states have internal predecessors, (3285), 923 states have call successors, (923), 262 states have call predecessors, (923), 280 states have return successors, (945), 909 states have call predecessors, (945), 916 states have call successors, (945) [2022-04-07 01:12:51,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3679 states to 3679 states and 5153 transitions. [2022-04-07 01:12:51,537 INFO L78 Accepts]: Start accepts. Automaton has 3679 states and 5153 transitions. Word has length 97 [2022-04-07 01:12:51,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:12:51,537 INFO L478 AbstractCegarLoop]: Abstraction has 3679 states and 5153 transitions. [2022-04-07 01:12:51,537 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 12 states have internal predecessors, (71), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:12:51,538 INFO L276 IsEmpty]: Start isEmpty. Operand 3679 states and 5153 transitions. [2022-04-07 01:12:51,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-04-07 01:12:51,539 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:12:51,539 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:12:51,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-04-07 01:12:51,759 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:12:51,759 INFO L403 AbstractCegarLoop]: === Iteration 81 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:12:51,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:12:51,760 INFO L85 PathProgramCache]: Analyzing trace with hash 492684880, now seen corresponding path program 1 times [2022-04-07 01:12:51,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:12:51,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [441047920] [2022-04-07 01:12:51,762 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:12:51,762 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:12:51,762 INFO L85 PathProgramCache]: Analyzing trace with hash 492684880, now seen corresponding path program 2 times [2022-04-07 01:12:51,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:12:51,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680936586] [2022-04-07 01:12:51,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:12:51,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:12:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:51,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:12:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:52,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:12:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:52,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:12:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:52,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:12:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:52,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:12:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:52,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:12:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:52,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:12:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:52,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 01:12:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:52,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:12:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:52,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:12:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:52,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:12:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:52,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:12:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:12:52,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:12:52,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:12:52,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680936586] [2022-04-07 01:12:52,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680936586] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:12:52,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326730247] [2022-04-07 01:12:52,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:12:52,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:12:52,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:12:52,208 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:12:52,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-04-07 01:12:54,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:12:54,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:12:54,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 1957 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:12:54,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:12:55,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:12:55,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:12:55,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326730247] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:12:55,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:12:55,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [10] total 24 [2022-04-07 01:12:55,136 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:12:55,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [441047920] [2022-04-07 01:12:55,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [441047920] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:12:55,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:12:55,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:12:55,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165828402] [2022-04-07 01:12:55,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:12:55,137 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:12:55,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:12:55,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:12:55,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2022-04-07 01:12:55,137 INFO L87 Difference]: Start difference. First operand 3679 states and 5153 transitions. Second operand has 16 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:13:03,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:13:03,781 INFO L93 Difference]: Finished difference Result 6252 states and 8875 transitions. [2022-04-07 01:13:03,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-07 01:13:03,781 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 96 [2022-04-07 01:13:03,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:13:03,797 INFO L225 Difference]: With dead ends: 6252 [2022-04-07 01:13:03,797 INFO L226 Difference]: Without dead ends: 6231 [2022-04-07 01:13:03,799 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-04-07 01:13:03,800 INFO L913 BasicCegarLoop]: 4010 mSDtfsCounter, 1889 mSDsluCounter, 33041 mSDsCounter, 0 mSdLazyCounter, 8933 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 37051 SdHoareTripleChecker+Invalid, 8951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 8933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-04-07 01:13:03,800 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1890 Valid, 37051 Invalid, 8951 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 8933 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-04-07 01:13:03,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6231 states. [2022-04-07 01:13:05,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6231 to 3676. [2022-04-07 01:13:05,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 2473 states have (on average 1.3275374039627983) internal successors, (3283), 2547 states have internal predecessors, (3283), 923 states have call successors, (923), 262 states have call predecessors, (923), 279 states have return successors, (943), 908 states have call predecessors, (943), 916 states have call successors, (943) [2022-04-07 01:13:05,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 5149 transitions. [2022-04-07 01:13:05,841 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 5149 transitions. Word has length 96 [2022-04-07 01:13:05,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:13:05,841 INFO L478 AbstractCegarLoop]: Abstraction has 3676 states and 5149 transitions. [2022-04-07 01:13:05,842 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:13:05,842 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 5149 transitions. [2022-04-07 01:13:05,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-04-07 01:13:05,843 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:13:05,843 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:13:05,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-04-07 01:13:06,069 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:13:06,070 INFO L403 AbstractCegarLoop]: === Iteration 82 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:13:06,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:13:06,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1911858775, now seen corresponding path program 1 times [2022-04-07 01:13:06,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:13:06,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1639277624] [2022-04-07 01:13:06,073 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:13:06,073 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:13:06,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1911858775, now seen corresponding path program 2 times [2022-04-07 01:13:06,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:13:06,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560749664] [2022-04-07 01:13:06,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:13:06,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:13:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:06,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:13:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:06,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:13:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:06,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:13:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:06,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:13:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:06,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:13:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:06,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:13:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:06,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:13:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:06,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:13:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:06,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 01:13:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:06,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:13:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:06,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:13:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:06,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:13:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:06,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:13:06,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:13:06,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560749664] [2022-04-07 01:13:06,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560749664] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:13:06,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164759527] [2022-04-07 01:13:06,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:13:06,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:13:06,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:13:06,750 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:13:06,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-04-07 01:13:09,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:13:09,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:13:09,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 1979 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:13:09,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:13:09,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:13:09,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:13:09,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164759527] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:13:09,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:13:09,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-04-07 01:13:09,742 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:13:09,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1639277624] [2022-04-07 01:13:09,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1639277624] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:13:09,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:13:09,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:13:09,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610431569] [2022-04-07 01:13:09,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:13:09,742 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:13:09,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:13:09,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:13:09,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-04-07 01:13:09,743 INFO L87 Difference]: Start difference. First operand 3676 states and 5149 transitions. Second operand has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:13:17,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:13:17,728 INFO L93 Difference]: Finished difference Result 6248 states and 8870 transitions. [2022-04-07 01:13:17,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-07 01:13:17,728 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2022-04-07 01:13:17,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:13:17,741 INFO L225 Difference]: With dead ends: 6248 [2022-04-07 01:13:17,741 INFO L226 Difference]: Without dead ends: 6227 [2022-04-07 01:13:17,743 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-04-07 01:13:17,743 INFO L913 BasicCegarLoop]: 4335 mSDtfsCounter, 1889 mSDsluCounter, 26808 mSDsCounter, 0 mSdLazyCounter, 8136 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 31143 SdHoareTripleChecker+Invalid, 8153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 8136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:13:17,743 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1890 Valid, 31143 Invalid, 8153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 8136 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-04-07 01:13:17,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6227 states. [2022-04-07 01:13:19,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6227 to 3676. [2022-04-07 01:13:19,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 2473 states have (on average 1.3275374039627983) internal successors, (3283), 2547 states have internal predecessors, (3283), 923 states have call successors, (923), 262 states have call predecessors, (923), 279 states have return successors, (942), 908 states have call predecessors, (942), 916 states have call successors, (942) [2022-04-07 01:13:19,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 5148 transitions. [2022-04-07 01:13:19,805 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 5148 transitions. Word has length 103 [2022-04-07 01:13:19,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:13:19,805 INFO L478 AbstractCegarLoop]: Abstraction has 3676 states and 5148 transitions. [2022-04-07 01:13:19,805 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:13:19,805 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 5148 transitions. [2022-04-07 01:13:19,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-04-07 01:13:19,806 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:13:19,807 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:13:19,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-04-07 01:13:20,023 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:13:20,023 INFO L403 AbstractCegarLoop]: === Iteration 83 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:13:20,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:13:20,024 INFO L85 PathProgramCache]: Analyzing trace with hash -2010832634, now seen corresponding path program 1 times [2022-04-07 01:13:20,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:13:20,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [138338759] [2022-04-07 01:13:20,026 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:13:20,026 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:13:20,026 INFO L85 PathProgramCache]: Analyzing trace with hash -2010832634, now seen corresponding path program 2 times [2022-04-07 01:13:20,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:13:20,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510015205] [2022-04-07 01:13:20,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:13:20,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:13:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:20,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:13:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:20,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:13:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:20,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:13:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:20,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:13:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:20,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:13:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:20,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:13:20,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:20,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:13:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:20,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:13:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:20,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:13:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:20,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:13:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:20,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:13:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:20,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:13:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:20,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:13:20,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:13:20,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510015205] [2022-04-07 01:13:20,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510015205] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:13:20,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268857540] [2022-04-07 01:13:20,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:13:20,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:13:20,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:13:20,689 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:13:20,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-04-07 01:13:23,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:13:23,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:13:23,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 1996 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:13:23,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:13:23,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:13:23,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:13:23,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268857540] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:13:23,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:13:23,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-04-07 01:13:23,601 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:13:23,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [138338759] [2022-04-07 01:13:23,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [138338759] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:13:23,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:13:23,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:13:23,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123052372] [2022-04-07 01:13:23,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:13:23,601 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:13:23,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:13:23,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:13:23,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-04-07 01:13:23,602 INFO L87 Difference]: Start difference. First operand 3676 states and 5148 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:13:31,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:13:31,471 INFO L93 Difference]: Finished difference Result 6275 states and 8896 transitions. [2022-04-07 01:13:31,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-07 01:13:31,471 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 104 [2022-04-07 01:13:31,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:13:31,484 INFO L225 Difference]: With dead ends: 6275 [2022-04-07 01:13:31,485 INFO L226 Difference]: Without dead ends: 6249 [2022-04-07 01:13:31,486 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-04-07 01:13:31,486 INFO L913 BasicCegarLoop]: 4314 mSDtfsCounter, 1918 mSDsluCounter, 19819 mSDsCounter, 0 mSdLazyCounter, 8325 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1919 SdHoareTripleChecker+Valid, 24133 SdHoareTripleChecker+Invalid, 8348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 8325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:13:31,486 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1919 Valid, 24133 Invalid, 8348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 8325 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-04-07 01:13:31,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6249 states. [2022-04-07 01:13:33,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6249 to 3687. [2022-04-07 01:13:33,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3687 states, 2483 states have (on average 1.3266210229561015) internal successors, (3294), 2559 states have internal predecessors, (3294), 922 states have call successors, (922), 262 states have call predecessors, (922), 281 states have return successors, (943), 907 states have call predecessors, (943), 915 states have call successors, (943) [2022-04-07 01:13:33,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5159 transitions. [2022-04-07 01:13:33,494 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5159 transitions. Word has length 104 [2022-04-07 01:13:33,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:13:33,494 INFO L478 AbstractCegarLoop]: Abstraction has 3687 states and 5159 transitions. [2022-04-07 01:13:33,494 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:13:33,494 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5159 transitions. [2022-04-07 01:13:33,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-04-07 01:13:33,495 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:13:33,497 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:13:33,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-04-07 01:13:33,711 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:13:33,711 INFO L403 AbstractCegarLoop]: === Iteration 84 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:13:33,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:13:33,712 INFO L85 PathProgramCache]: Analyzing trace with hash -962867689, now seen corresponding path program 1 times [2022-04-07 01:13:33,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:13:33,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1677739666] [2022-04-07 01:13:33,721 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:13:33,721 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:13:33,721 INFO L85 PathProgramCache]: Analyzing trace with hash -962867689, now seen corresponding path program 2 times [2022-04-07 01:13:33,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:13:33,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720093198] [2022-04-07 01:13:33,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:13:33,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:13:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:33,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:13:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:34,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:13:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:34,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:13:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:34,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:13:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:34,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:13:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:34,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:13:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:34,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:13:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:34,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:13:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:34,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 01:13:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:34,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:13:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:34,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:13:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:34,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:13:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:13:34,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:13:34,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720093198] [2022-04-07 01:13:34,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720093198] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:13:34,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953655656] [2022-04-07 01:13:34,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:13:34,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:13:34,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:13:34,234 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:13:34,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-04-07 01:13:36,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:13:36,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:13:36,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 1978 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:13:36,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:13:37,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:13:37,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:13:37,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953655656] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:13:37,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:13:37,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-04-07 01:13:37,171 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:13:37,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1677739666] [2022-04-07 01:13:37,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1677739666] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:13:37,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:13:37,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:13:37,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847310175] [2022-04-07 01:13:37,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:13:37,172 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:13:37,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:13:37,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:13:37,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-04-07 01:13:37,172 INFO L87 Difference]: Start difference. First operand 3687 states and 5159 transitions. Second operand has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:13:45,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:13:45,265 INFO L93 Difference]: Finished difference Result 6266 states and 8884 transitions. [2022-04-07 01:13:45,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-07 01:13:45,266 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2022-04-07 01:13:45,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:13:45,278 INFO L225 Difference]: With dead ends: 6266 [2022-04-07 01:13:45,278 INFO L226 Difference]: Without dead ends: 6202 [2022-04-07 01:13:45,280 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-04-07 01:13:45,280 INFO L913 BasicCegarLoop]: 4029 mSDtfsCounter, 1910 mSDsluCounter, 32036 mSDsCounter, 0 mSdLazyCounter, 8373 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1911 SdHoareTripleChecker+Valid, 36065 SdHoareTripleChecker+Invalid, 8395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 8373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:13:45,280 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1911 Valid, 36065 Invalid, 8395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 8373 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-04-07 01:13:45,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6202 states. [2022-04-07 01:13:47,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6202 to 3640. [2022-04-07 01:13:47,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 2445 states have (on average 1.3243353783231084) internal successors, (3238), 2521 states have internal predecessors, (3238), 917 states have call successors, (917), 258 states have call predecessors, (917), 277 states have return successors, (938), 902 states have call predecessors, (938), 910 states have call successors, (938) [2022-04-07 01:13:47,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 5093 transitions. [2022-04-07 01:13:47,390 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 5093 transitions. Word has length 103 [2022-04-07 01:13:47,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:13:47,390 INFO L478 AbstractCegarLoop]: Abstraction has 3640 states and 5093 transitions. [2022-04-07 01:13:47,390 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:13:47,390 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 5093 transitions. [2022-04-07 01:13:47,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-04-07 01:13:47,392 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:13:47,392 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:13:47,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-04-07 01:13:47,607 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2022-04-07 01:13:47,607 INFO L403 AbstractCegarLoop]: === Iteration 85 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:13:47,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:13:47,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1912925712, now seen corresponding path program 1 times [2022-04-07 01:13:47,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:13:47,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [916028914] [2022-04-07 01:13:47,610 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:13:47,610 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:13:47,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1912925712, now seen corresponding path program 2 times [2022-04-07 01:13:47,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:13:47,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226391870] [2022-04-07 01:13:47,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:13:47,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:13:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:47,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:13:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:47,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:13:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:47,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:13:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:48,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:13:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:48,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:13:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:48,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:13:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:48,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:13:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:48,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 01:13:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:48,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:13:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:48,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:13:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:48,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:13:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:48,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:13:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:13:48,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:13:48,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:13:48,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226391870] [2022-04-07 01:13:48,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226391870] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:13:48,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288584101] [2022-04-07 01:13:48,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:13:48,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:13:48,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:13:48,148 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:13:48,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-04-07 01:13:50,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:13:50,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:13:50,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 1956 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:13:50,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:13:51,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:13:51,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:13:51,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288584101] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:13:51,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:13:51,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [10] total 24 [2022-04-07 01:13:51,056 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:13:51,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [916028914] [2022-04-07 01:13:51,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [916028914] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:13:51,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:13:51,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:13:51,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179201285] [2022-04-07 01:13:51,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:13:51,057 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:13:51,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:13:51,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:13:51,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2022-04-07 01:13:51,057 INFO L87 Difference]: Start difference. First operand 3640 states and 5093 transitions. Second operand has 16 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:14:00,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:14:00,188 INFO L93 Difference]: Finished difference Result 6219 states and 8818 transitions. [2022-04-07 01:14:00,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-07 01:14:00,189 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 96 [2022-04-07 01:14:00,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:14:00,203 INFO L225 Difference]: With dead ends: 6219 [2022-04-07 01:14:00,203 INFO L226 Difference]: Without dead ends: 6194 [2022-04-07 01:14:00,205 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-04-07 01:14:00,205 INFO L913 BasicCegarLoop]: 4239 mSDtfsCounter, 1899 mSDsluCounter, 43856 mSDsCounter, 0 mSdLazyCounter, 9140 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1900 SdHoareTripleChecker+Valid, 48095 SdHoareTripleChecker+Invalid, 9162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 9140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:14:00,205 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1900 Valid, 48095 Invalid, 9162 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 9140 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-04-07 01:14:00,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6194 states. [2022-04-07 01:14:02,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6194 to 3632. [2022-04-07 01:14:02,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3632 states, 2440 states have (on average 1.3245901639344262) internal successors, (3232), 2516 states have internal predecessors, (3232), 915 states have call successors, (915), 258 states have call predecessors, (915), 276 states have return successors, (935), 899 states have call predecessors, (935), 908 states have call successors, (935) [2022-04-07 01:14:02,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3632 states to 3632 states and 5082 transitions. [2022-04-07 01:14:02,423 INFO L78 Accepts]: Start accepts. Automaton has 3632 states and 5082 transitions. Word has length 96 [2022-04-07 01:14:02,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:14:02,423 INFO L478 AbstractCegarLoop]: Abstraction has 3632 states and 5082 transitions. [2022-04-07 01:14:02,423 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:14:02,424 INFO L276 IsEmpty]: Start isEmpty. Operand 3632 states and 5082 transitions. [2022-04-07 01:14:02,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-04-07 01:14:02,425 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:14:02,426 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:14:02,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-04-07 01:14:02,643 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:14:02,643 INFO L403 AbstractCegarLoop]: === Iteration 86 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:14:02,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:14:02,643 INFO L85 PathProgramCache]: Analyzing trace with hash 824363753, now seen corresponding path program 1 times [2022-04-07 01:14:02,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:14:02,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [299112082] [2022-04-07 01:14:02,646 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:14:02,646 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:14:02,646 INFO L85 PathProgramCache]: Analyzing trace with hash 824363753, now seen corresponding path program 2 times [2022-04-07 01:14:02,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:14:02,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093072278] [2022-04-07 01:14:02,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:14:02,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:14:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:02,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:14:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:02,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:14:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:02,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:14:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:02,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:14:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:02,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:14:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:03,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:14:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:03,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:14:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:03,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-07 01:14:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:03,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:14:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:03,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-07 01:14:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:03,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:14:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:03,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 01:14:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:03,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:14:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:03,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:14:03,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:14:03,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093072278] [2022-04-07 01:14:03,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093072278] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:14:03,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295435611] [2022-04-07 01:14:03,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:14:03,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:14:03,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:14:03,125 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:14:03,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-04-07 01:14:05,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:14:05,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:14:05,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 2023 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:14:05,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:14:06,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:14:06,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:14:06,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295435611] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:14:06,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:14:06,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-04-07 01:14:06,147 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:14:06,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [299112082] [2022-04-07 01:14:06,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [299112082] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:14:06,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:14:06,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:14:06,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12540620] [2022-04-07 01:14:06,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:14:06,209 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:14:06,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:14:06,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:14:06,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-04-07 01:14:06,209 INFO L87 Difference]: Start difference. First operand 3632 states and 5082 transitions. Second operand has 16 states, 16 states have (on average 5.25) internal successors, (84), 12 states have internal predecessors, (84), 4 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13) [2022-04-07 01:14:15,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:14:15,575 INFO L93 Difference]: Finished difference Result 6235 states and 8842 transitions. [2022-04-07 01:14:15,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-07 01:14:15,576 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 12 states have internal predecessors, (84), 4 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2022-04-07 01:14:15,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:14:15,590 INFO L225 Difference]: With dead ends: 6235 [2022-04-07 01:14:15,590 INFO L226 Difference]: Without dead ends: 6214 [2022-04-07 01:14:15,592 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-04-07 01:14:15,592 INFO L913 BasicCegarLoop]: 2832 mSDtfsCounter, 2342 mSDsluCounter, 23145 mSDsCounter, 0 mSdLazyCounter, 10474 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2343 SdHoareTripleChecker+Valid, 25977 SdHoareTripleChecker+Invalid, 10494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 10474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-04-07 01:14:15,592 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2343 Valid, 25977 Invalid, 10494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 10474 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-04-07 01:14:15,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6214 states. [2022-04-07 01:14:17,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6214 to 3614. [2022-04-07 01:14:17,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3614 states, 2428 states have (on average 1.3261943986820428) internal successors, (3220), 2503 states have internal predecessors, (3220), 913 states have call successors, (913), 256 states have call predecessors, (913), 272 states have return successors, (929), 896 states have call predecessors, (929), 906 states have call successors, (929) [2022-04-07 01:14:17,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 5062 transitions. [2022-04-07 01:14:17,831 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 5062 transitions. Word has length 112 [2022-04-07 01:14:17,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:14:17,832 INFO L478 AbstractCegarLoop]: Abstraction has 3614 states and 5062 transitions. [2022-04-07 01:14:17,832 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 12 states have internal predecessors, (84), 4 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13) [2022-04-07 01:14:17,832 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 5062 transitions. [2022-04-07 01:14:17,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-04-07 01:14:17,833 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:14:17,833 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:14:17,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-04-07 01:14:18,053 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:14:18,053 INFO L403 AbstractCegarLoop]: === Iteration 87 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:14:18,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:14:18,054 INFO L85 PathProgramCache]: Analyzing trace with hash 175676299, now seen corresponding path program 1 times [2022-04-07 01:14:18,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:14:18,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [491925476] [2022-04-07 01:14:18,056 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:14:18,056 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:14:18,057 INFO L85 PathProgramCache]: Analyzing trace with hash 175676299, now seen corresponding path program 2 times [2022-04-07 01:14:18,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:14:18,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359170610] [2022-04-07 01:14:18,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:14:18,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:14:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:18,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:14:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:18,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:14:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:18,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:14:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:18,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:14:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:18,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:14:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:18,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:14:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:18,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:14:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:18,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-07 01:14:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:18,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:14:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:18,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:14:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:18,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:14:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:18,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:14:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:18,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:14:18,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:14:18,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359170610] [2022-04-07 01:14:18,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359170610] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:14:18,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690978350] [2022-04-07 01:14:18,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:14:18,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:14:18,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:14:18,524 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:14:18,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-04-07 01:14:21,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:14:21,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:14:21,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 2004 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:14:21,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:14:21,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:14:21,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:14:21,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690978350] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:14:21,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:14:21,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-04-07 01:14:21,646 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:14:21,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [491925476] [2022-04-07 01:14:21,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [491925476] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:14:21,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:14:21,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:14:21,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327921941] [2022-04-07 01:14:21,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:14:21,646 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:14:21,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:14:21,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:14:21,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-04-07 01:14:21,647 INFO L87 Difference]: Start difference. First operand 3614 states and 5062 transitions. Second operand has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:14:30,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:14:30,918 INFO L93 Difference]: Finished difference Result 6189 states and 8783 transitions. [2022-04-07 01:14:30,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-07 01:14:30,918 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2022-04-07 01:14:30,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:14:30,933 INFO L225 Difference]: With dead ends: 6189 [2022-04-07 01:14:30,933 INFO L226 Difference]: Without dead ends: 6165 [2022-04-07 01:14:30,935 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-04-07 01:14:30,935 INFO L913 BasicCegarLoop]: 3959 mSDtfsCounter, 1898 mSDsluCounter, 36714 mSDsCounter, 0 mSdLazyCounter, 9110 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1899 SdHoareTripleChecker+Valid, 40673 SdHoareTripleChecker+Invalid, 9129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 9110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-04-07 01:14:30,935 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1899 Valid, 40673 Invalid, 9129 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 9110 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-04-07 01:14:30,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6165 states. [2022-04-07 01:14:33,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6165 to 3607. [2022-04-07 01:14:33,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3607 states, 2424 states have (on average 1.3263201320132014) internal successors, (3215), 2499 states have internal predecessors, (3215), 911 states have call successors, (911), 255 states have call predecessors, (911), 271 states have return successors, (927), 894 states have call predecessors, (927), 904 states have call successors, (927) [2022-04-07 01:14:33,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3607 states to 3607 states and 5053 transitions. [2022-04-07 01:14:33,234 INFO L78 Accepts]: Start accepts. Automaton has 3607 states and 5053 transitions. Word has length 103 [2022-04-07 01:14:33,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:14:33,234 INFO L478 AbstractCegarLoop]: Abstraction has 3607 states and 5053 transitions. [2022-04-07 01:14:33,234 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:14:33,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3607 states and 5053 transitions. [2022-04-07 01:14:33,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-04-07 01:14:33,236 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:14:33,236 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:14:33,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-04-07 01:14:33,455 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:14:33,456 INFO L403 AbstractCegarLoop]: === Iteration 88 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:14:33,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:14:33,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1387654662, now seen corresponding path program 1 times [2022-04-07 01:14:33,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:14:33,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [506147262] [2022-04-07 01:14:33,458 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:14:33,458 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:14:33,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1387654662, now seen corresponding path program 2 times [2022-04-07 01:14:33,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:14:33,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511138255] [2022-04-07 01:14:33,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:14:33,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:14:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:33,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:14:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:33,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:14:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:33,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:14:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:33,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:14:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:33,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:14:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:33,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:14:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:33,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:14:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:33,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-07 01:14:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:33,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:14:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:33,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:14:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:33,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:14:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:33,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:14:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:33,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:14:33,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:14:33,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511138255] [2022-04-07 01:14:33,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511138255] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:14:33,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577577654] [2022-04-07 01:14:33,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:14:33,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:14:33,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:14:33,976 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:14:34,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-04-07 01:14:36,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:14:36,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:14:36,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 1999 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:14:36,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:14:37,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:14:37,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:14:37,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577577654] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:14:37,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:14:37,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-04-07 01:14:37,207 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:14:37,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [506147262] [2022-04-07 01:14:37,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [506147262] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:14:37,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:14:37,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:14:37,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808768258] [2022-04-07 01:14:37,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:14:37,207 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:14:37,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:14:37,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:14:37,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-04-07 01:14:37,208 INFO L87 Difference]: Start difference. First operand 3607 states and 5053 transitions. Second operand has 16 states, 16 states have (on average 5.0625) internal successors, (81), 12 states have internal predecessors, (81), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:14:46,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:14:46,747 INFO L93 Difference]: Finished difference Result 6182 states and 8774 transitions. [2022-04-07 01:14:46,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-07 01:14:46,747 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 12 states have internal predecessors, (81), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 107 [2022-04-07 01:14:46,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:14:46,761 INFO L225 Difference]: With dead ends: 6182 [2022-04-07 01:14:46,761 INFO L226 Difference]: Without dead ends: 6156 [2022-04-07 01:14:46,762 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-04-07 01:14:46,763 INFO L913 BasicCegarLoop]: 3950 mSDtfsCounter, 1896 mSDsluCounter, 38655 mSDsCounter, 0 mSdLazyCounter, 9099 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 42605 SdHoareTripleChecker+Invalid, 9119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 9099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:14:46,763 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1897 Valid, 42605 Invalid, 9119 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 9099 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-04-07 01:14:46,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6156 states. [2022-04-07 01:14:49,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6156 to 3598. [2022-04-07 01:14:49,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 2418 states have (on average 1.326302729528536) internal successors, (3207), 2493 states have internal predecessors, (3207), 909 states have call successors, (909), 254 states have call predecessors, (909), 270 states have return successors, (925), 892 states have call predecessors, (925), 902 states have call successors, (925) [2022-04-07 01:14:49,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 5041 transitions. [2022-04-07 01:14:49,395 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 5041 transitions. Word has length 107 [2022-04-07 01:14:49,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:14:49,396 INFO L478 AbstractCegarLoop]: Abstraction has 3598 states and 5041 transitions. [2022-04-07 01:14:49,396 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 12 states have internal predecessors, (81), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:14:49,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 5041 transitions. [2022-04-07 01:14:49,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-04-07 01:14:49,397 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:14:49,397 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:14:49,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-04-07 01:14:49,623 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:14:49,623 INFO L403 AbstractCegarLoop]: === Iteration 89 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:14:49,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:14:49,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1542981765, now seen corresponding path program 1 times [2022-04-07 01:14:49,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:14:49,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1153399649] [2022-04-07 01:14:49,626 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:14:49,626 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:14:49,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1542981765, now seen corresponding path program 2 times [2022-04-07 01:14:49,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:14:49,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944651466] [2022-04-07 01:14:49,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:14:49,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:14:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:49,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:14:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:49,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:14:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:49,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:14:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:49,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:14:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:49,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:14:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:49,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:14:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:49,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:14:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:50,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-07 01:14:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:50,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:14:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:50,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-07 01:14:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:50,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:14:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:50,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:14:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:50,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:14:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:14:50,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:14:50,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:14:50,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944651466] [2022-04-07 01:14:50,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944651466] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:14:50,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986654211] [2022-04-07 01:14:50,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:14:50,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:14:50,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:14:50,066 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:14:50,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-04-07 01:14:52,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:14:52,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:14:52,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 2023 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:14:52,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:14:53,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:14:53,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:14:53,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986654211] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:14:53,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:14:53,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-04-07 01:14:53,100 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:14:53,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1153399649] [2022-04-07 01:14:53,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1153399649] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:14:53,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:14:53,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:14:53,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496185958] [2022-04-07 01:14:53,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:14:53,100 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:14:53,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:14:53,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:14:53,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-04-07 01:14:53,101 INFO L87 Difference]: Start difference. First operand 3598 states and 5041 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 12 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13) [2022-04-07 01:15:02,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:15:02,231 INFO L93 Difference]: Finished difference Result 6173 states and 8762 transitions. [2022-04-07 01:15:02,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-07 01:15:02,232 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 12 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2022-04-07 01:15:02,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:15:02,245 INFO L225 Difference]: With dead ends: 6173 [2022-04-07 01:15:02,245 INFO L226 Difference]: Without dead ends: 6147 [2022-04-07 01:15:02,246 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-04-07 01:15:02,246 INFO L913 BasicCegarLoop]: 4112 mSDtfsCounter, 1894 mSDsluCounter, 27143 mSDsCounter, 0 mSdLazyCounter, 8997 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 31255 SdHoareTripleChecker+Invalid, 9014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 8997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-04-07 01:15:02,246 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1895 Valid, 31255 Invalid, 9014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 8997 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-04-07 01:15:02,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6147 states. [2022-04-07 01:15:04,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6147 to 3589. [2022-04-07 01:15:04,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3589 states, 2413 states have (on average 1.3265644426025693) internal successors, (3201), 2488 states have internal predecessors, (3201), 906 states have call successors, (906), 253 states have call predecessors, (906), 269 states have return successors, (922), 889 states have call predecessors, (922), 899 states have call successors, (922) [2022-04-07 01:15:04,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3589 states to 3589 states and 5029 transitions. [2022-04-07 01:15:04,515 INFO L78 Accepts]: Start accepts. Automaton has 3589 states and 5029 transitions. Word has length 113 [2022-04-07 01:15:04,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:15:04,515 INFO L478 AbstractCegarLoop]: Abstraction has 3589 states and 5029 transitions. [2022-04-07 01:15:04,516 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 12 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13) [2022-04-07 01:15:04,516 INFO L276 IsEmpty]: Start isEmpty. Operand 3589 states and 5029 transitions. [2022-04-07 01:15:04,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-04-07 01:15:04,517 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:15:04,517 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:15:04,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-04-07 01:15:04,735 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:15:04,735 INFO L403 AbstractCegarLoop]: === Iteration 90 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:15:04,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:15:04,736 INFO L85 PathProgramCache]: Analyzing trace with hash -9617634, now seen corresponding path program 1 times [2022-04-07 01:15:04,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:15:04,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1639551989] [2022-04-07 01:15:04,738 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:15:04,738 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:15:04,738 INFO L85 PathProgramCache]: Analyzing trace with hash -9617634, now seen corresponding path program 2 times [2022-04-07 01:15:04,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:15:04,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467992971] [2022-04-07 01:15:04,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:15:04,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:15:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:04,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:15:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:04,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:15:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:05,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:15:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:05,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:15:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:05,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:15:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:05,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:15:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:05,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:15:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:05,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-07 01:15:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:05,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:15:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:05,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:15:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:05,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:15:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:05,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:15:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:05,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:15:05,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:15:05,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467992971] [2022-04-07 01:15:05,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467992971] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:15:05,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494615124] [2022-04-07 01:15:05,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:15:05,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:15:05,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:15:05,308 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:15:05,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-04-07 01:15:07,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:15:07,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:15:07,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:15:07,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:15:08,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:15:08,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:15:08,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494615124] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:15:08,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:15:08,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [10] total 24 [2022-04-07 01:15:08,296 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:15:08,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1639551989] [2022-04-07 01:15:08,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1639551989] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:15:08,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:15:08,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 01:15:08,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168384500] [2022-04-07 01:15:08,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:15:08,297 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 01:15:08,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:15:08,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 01:15:08,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2022-04-07 01:15:08,297 INFO L87 Difference]: Start difference. First operand 3589 states and 5029 transitions. Second operand has 16 states, 16 states have (on average 4.4375) internal successors, (71), 12 states have internal predecessors, (71), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:15:17,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:15:17,001 INFO L93 Difference]: Finished difference Result 6164 states and 8750 transitions. [2022-04-07 01:15:17,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-07 01:15:17,001 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 12 states have internal predecessors, (71), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 97 [2022-04-07 01:15:17,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:15:17,013 INFO L225 Difference]: With dead ends: 6164 [2022-04-07 01:15:17,013 INFO L226 Difference]: Without dead ends: 6140 [2022-04-07 01:15:17,015 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-04-07 01:15:17,015 INFO L913 BasicCegarLoop]: 3922 mSDtfsCounter, 1894 mSDsluCounter, 29174 mSDsCounter, 0 mSdLazyCounter, 8256 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 33096 SdHoareTripleChecker+Invalid, 8276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 8256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:15:17,018 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1895 Valid, 33096 Invalid, 8276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 8256 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-04-07 01:15:17,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6140 states. [2022-04-07 01:15:19,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6140 to 3582. [2022-04-07 01:15:19,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 2409 states have (on average 1.3266915732669158) internal successors, (3196), 2484 states have internal predecessors, (3196), 904 states have call successors, (904), 252 states have call predecessors, (904), 268 states have return successors, (920), 887 states have call predecessors, (920), 897 states have call successors, (920) [2022-04-07 01:15:19,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 5020 transitions. [2022-04-07 01:15:19,399 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 5020 transitions. Word has length 97 [2022-04-07 01:15:19,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:15:19,399 INFO L478 AbstractCegarLoop]: Abstraction has 3582 states and 5020 transitions. [2022-04-07 01:15:19,399 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 12 states have internal predecessors, (71), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-07 01:15:19,399 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 5020 transitions. [2022-04-07 01:15:19,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-04-07 01:15:19,424 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:15:19,424 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:15:19,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-04-07 01:15:19,643 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-04-07 01:15:19,643 INFO L403 AbstractCegarLoop]: === Iteration 91 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:15:19,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:15:19,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1064222523, now seen corresponding path program 1 times [2022-04-07 01:15:19,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:15:19,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1385641325] [2022-04-07 01:15:19,646 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:15:19,646 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:15:19,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1064222523, now seen corresponding path program 2 times [2022-04-07 01:15:19,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:15:19,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259594018] [2022-04-07 01:15:19,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:15:19,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:15:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:19,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:15:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:19,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:15:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:19,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:15:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:19,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:15:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:19,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:15:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:19,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:15:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:20,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:15:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:20,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-07 01:15:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:20,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 01:15:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:20,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:15:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:20,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:15:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:20,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-07 01:15:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:20,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:15:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:15:20,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:15:20,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259594018] [2022-04-07 01:15:20,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259594018] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:15:20,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368713853] [2022-04-07 01:15:20,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:15:20,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:15:20,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:15:20,092 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:15:20,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-04-07 01:15:22,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:15:22,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:15:22,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 1912 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-07 01:15:22,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:15:23,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:15:23,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:15:23,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368713853] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:15:23,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:15:23,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-04-07 01:15:23,106 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:15:23,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1385641325] [2022-04-07 01:15:23,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1385641325] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:15:23,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:15:23,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 01:15:23,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850463127] [2022-04-07 01:15:23,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:15:23,106 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-07 01:15:23,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:15:23,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-07 01:15:23,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-04-07 01:15:23,107 INFO L87 Difference]: Start difference. First operand 3582 states and 5020 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 7 states have internal predecessors, (71), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-07 01:15:25,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:15:25,650 INFO L93 Difference]: Finished difference Result 3601 states and 5040 transitions. [2022-04-07 01:15:25,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-07 01:15:25,651 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 7 states have internal predecessors, (71), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) Word has length 99 [2022-04-07 01:15:25,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:15:25,659 INFO L225 Difference]: With dead ends: 3601 [2022-04-07 01:15:25,659 INFO L226 Difference]: Without dead ends: 3563 [2022-04-07 01:15:25,660 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2022-04-07 01:15:25,660 INFO L913 BasicCegarLoop]: 2352 mSDtfsCounter, 5 mSDsluCounter, 16422 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18774 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:15:25,660 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 18774 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 01:15:25,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3563 states. [2022-04-07 01:15:28,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3563 to 3563. [2022-04-07 01:15:28,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3563 states, 2398 states have (on average 1.3277731442869058) internal successors, (3184), 2473 states have internal predecessors, (3184), 900 states have call successors, (900), 249 states have call predecessors, (900), 264 states have return successors, (915), 882 states have call predecessors, (915), 893 states have call successors, (915) [2022-04-07 01:15:28,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3563 states to 3563 states and 4999 transitions. [2022-04-07 01:15:28,036 INFO L78 Accepts]: Start accepts. Automaton has 3563 states and 4999 transitions. Word has length 99 [2022-04-07 01:15:28,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:15:28,036 INFO L478 AbstractCegarLoop]: Abstraction has 3563 states and 4999 transitions. [2022-04-07 01:15:28,036 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 7 states have internal predecessors, (71), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-07 01:15:28,036 INFO L276 IsEmpty]: Start isEmpty. Operand 3563 states and 4999 transitions. [2022-04-07 01:15:28,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-04-07 01:15:28,038 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:15:28,038 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:15:28,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-04-07 01:15:28,243 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:15:28,243 INFO L403 AbstractCegarLoop]: === Iteration 92 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:15:28,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:15:28,243 INFO L85 PathProgramCache]: Analyzing trace with hash 160391970, now seen corresponding path program 1 times [2022-04-07 01:15:28,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:15:28,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [112163874] [2022-04-07 01:15:28,249 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:15:28,250 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:15:28,250 INFO L85 PathProgramCache]: Analyzing trace with hash 160391970, now seen corresponding path program 2 times [2022-04-07 01:15:28,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:15:28,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740874522] [2022-04-07 01:15:28,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:15:28,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:15:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:28,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:15:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:28,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:15:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:28,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:15:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:28,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-07 01:15:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:28,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 01:15:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:28,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:15:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:28,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 01:15:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:28,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-07 01:15:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:28,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:15:28,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:15:28,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740874522] [2022-04-07 01:15:28,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740874522] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:15:28,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477264633] [2022-04-07 01:15:28,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:15:28,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:15:28,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:15:28,707 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:15:28,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-04-07 01:15:31,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:15:31,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:15:31,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 1800 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-07 01:15:31,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:15:31,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:15:31,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:15:31,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477264633] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:15:31,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:15:31,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-04-07 01:15:31,600 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:15:31,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [112163874] [2022-04-07 01:15:31,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [112163874] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:15:31,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:15:31,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 01:15:31,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117709125] [2022-04-07 01:15:31,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:15:31,601 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-07 01:15:31,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:15:31,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-07 01:15:31,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-04-07 01:15:31,602 INFO L87 Difference]: Start difference. First operand 3563 states and 4999 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 7 states have internal predecessors, (79), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 1 states have call successors, (8) [2022-04-07 01:15:34,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:15:34,144 INFO L93 Difference]: Finished difference Result 3630 states and 5077 transitions. [2022-04-07 01:15:34,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-07 01:15:34,145 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 7 states have internal predecessors, (79), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 1 states have call successors, (8) Word has length 97 [2022-04-07 01:15:34,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:15:34,151 INFO L225 Difference]: With dead ends: 3630 [2022-04-07 01:15:34,151 INFO L226 Difference]: Without dead ends: 3585 [2022-04-07 01:15:34,152 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-04-07 01:15:34,152 INFO L913 BasicCegarLoop]: 2333 mSDtfsCounter, 23 mSDsluCounter, 16287 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 18620 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:15:34,152 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 18620 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-07 01:15:34,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3585 states. [2022-04-07 01:15:36,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3585 to 3568. [2022-04-07 01:15:36,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3568 states, 2402 states have (on average 1.3276436303080765) internal successors, (3189), 2477 states have internal predecessors, (3189), 900 states have call successors, (900), 249 states have call predecessors, (900), 265 states have return successors, (916), 883 states have call predecessors, (916), 893 states have call successors, (916) [2022-04-07 01:15:36,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3568 states to 3568 states and 5005 transitions. [2022-04-07 01:15:36,463 INFO L78 Accepts]: Start accepts. Automaton has 3568 states and 5005 transitions. Word has length 97 [2022-04-07 01:15:36,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:15:36,464 INFO L478 AbstractCegarLoop]: Abstraction has 3568 states and 5005 transitions. [2022-04-07 01:15:36,464 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 7 states have internal predecessors, (79), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 1 states have call successors, (8) [2022-04-07 01:15:36,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3568 states and 5005 transitions. [2022-04-07 01:15:36,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-04-07 01:15:36,465 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:15:36,465 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:15:36,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-04-07 01:15:36,679 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:15:36,679 INFO L403 AbstractCegarLoop]: === Iteration 93 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:15:36,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:15:36,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1030611916, now seen corresponding path program 1 times [2022-04-07 01:15:36,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:15:36,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [417748545] [2022-04-07 01:15:36,682 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:15:36,683 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:15:36,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1030611916, now seen corresponding path program 2 times [2022-04-07 01:15:36,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:15:36,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351757762] [2022-04-07 01:15:36,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:15:36,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:15:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:37,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:15:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:37,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:15:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:37,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:15:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:37,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:15:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:37,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:15:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:37,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:15:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:37,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:15:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:37,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 01:15:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:37,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-07 01:15:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:37,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-07 01:15:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:37,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:15:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:37,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-07 01:15:37,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:15:37,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351757762] [2022-04-07 01:15:37,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351757762] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:15:37,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104614645] [2022-04-07 01:15:37,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:15:37,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:15:37,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:15:37,447 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:15:37,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-04-07 01:15:40,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:15:40,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:15:40,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 1846 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-07 01:15:40,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:15:40,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:15:40,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:15:40,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104614645] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:15:40,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:15:40,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-04-07 01:15:40,407 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:15:40,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [417748545] [2022-04-07 01:15:40,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [417748545] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:15:40,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:15:40,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 01:15:40,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291639138] [2022-04-07 01:15:40,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:15:40,408 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 01:15:40,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:15:40,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 01:15:40,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-04-07 01:15:40,411 INFO L87 Difference]: Start difference. First operand 3568 states and 5005 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-04-07 01:15:42,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:15:42,832 INFO L93 Difference]: Finished difference Result 3744 states and 5205 transitions. [2022-04-07 01:15:42,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 01:15:42,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 98 [2022-04-07 01:15:42,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:15:42,840 INFO L225 Difference]: With dead ends: 3744 [2022-04-07 01:15:42,840 INFO L226 Difference]: Without dead ends: 3605 [2022-04-07 01:15:42,841 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-04-07 01:15:42,841 INFO L913 BasicCegarLoop]: 2345 mSDtfsCounter, 136 mSDsluCounter, 2255 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 4600 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 01:15:42,841 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 4600 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 01:15:42,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3605 states. [2022-04-07 01:15:45,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3605 to 3564. [2022-04-07 01:15:45,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3564 states, 2400 states have (on average 1.3266666666666667) internal successors, (3184), 2474 states have internal predecessors, (3184), 898 states have call successors, (898), 249 states have call predecessors, (898), 265 states have return successors, (914), 882 states have call predecessors, (914), 891 states have call successors, (914) [2022-04-07 01:15:45,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 4996 transitions. [2022-04-07 01:15:45,393 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 4996 transitions. Word has length 98 [2022-04-07 01:15:45,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:15:45,393 INFO L478 AbstractCegarLoop]: Abstraction has 3564 states and 4996 transitions. [2022-04-07 01:15:45,393 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-04-07 01:15:45,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 4996 transitions. [2022-04-07 01:15:45,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-04-07 01:15:45,398 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:15:45,398 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:15:45,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-04-07 01:15:45,611 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:15:45,611 INFO L403 AbstractCegarLoop]: === Iteration 94 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:15:45,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:15:45,611 INFO L85 PathProgramCache]: Analyzing trace with hash -752899614, now seen corresponding path program 1 times [2022-04-07 01:15:45,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:15:45,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [689725853] [2022-04-07 01:15:45,614 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:15:45,614 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:15:45,614 INFO L85 PathProgramCache]: Analyzing trace with hash -752899614, now seen corresponding path program 2 times [2022-04-07 01:15:45,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:15:45,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035667012] [2022-04-07 01:15:45,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:15:45,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:15:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:45,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:15:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:45,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:15:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:45,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:15:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:45,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-07 01:15:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:45,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 01:15:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:45,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:15:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:45,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-07 01:15:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:45,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-07 01:15:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:45,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:15:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:46,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-07 01:15:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:46,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:15:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:46,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:15:46,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:15:46,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035667012] [2022-04-07 01:15:46,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035667012] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:15:46,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761445413] [2022-04-07 01:15:46,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:15:46,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:15:46,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:15:46,041 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:15:46,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-04-07 01:15:48,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:15:48,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:15:48,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-07 01:15:48,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:15:49,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-07 01:15:49,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:15:49,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761445413] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:15:49,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:15:49,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-04-07 01:15:49,020 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:15:49,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [689725853] [2022-04-07 01:15:49,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [689725853] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:15:49,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:15:49,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 01:15:49,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386073450] [2022-04-07 01:15:49,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:15:49,021 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-07 01:15:49,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:15:49,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-07 01:15:49,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-04-07 01:15:49,021 INFO L87 Difference]: Start difference. First operand 3564 states and 4996 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-04-07 01:15:51,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:15:51,564 INFO L93 Difference]: Finished difference Result 3592 states and 5027 transitions. [2022-04-07 01:15:51,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-07 01:15:51,564 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 102 [2022-04-07 01:15:51,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:15:51,572 INFO L225 Difference]: With dead ends: 3592 [2022-04-07 01:15:51,572 INFO L226 Difference]: Without dead ends: 3564 [2022-04-07 01:15:51,573 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-04-07 01:15:51,573 INFO L913 BasicCegarLoop]: 2337 mSDtfsCounter, 5 mSDsluCounter, 16315 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18652 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-07 01:15:51,573 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 18652 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-07 01:15:51,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2022-04-07 01:15:54,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 3564. [2022-04-07 01:15:54,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3564 states, 2400 states have (on average 1.325) internal successors, (3180), 2474 states have internal predecessors, (3180), 898 states have call successors, (898), 249 states have call predecessors, (898), 265 states have return successors, (914), 882 states have call predecessors, (914), 891 states have call successors, (914) [2022-04-07 01:15:54,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 4992 transitions. [2022-04-07 01:15:54,097 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 4992 transitions. Word has length 102 [2022-04-07 01:15:54,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:15:54,097 INFO L478 AbstractCegarLoop]: Abstraction has 3564 states and 4992 transitions. [2022-04-07 01:15:54,097 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-04-07 01:15:54,097 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 4992 transitions. [2022-04-07 01:15:54,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-04-07 01:15:54,099 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:15:54,099 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:15:54,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-04-07 01:15:54,325 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:15:54,325 INFO L403 AbstractCegarLoop]: === Iteration 95 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:15:54,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:15:54,326 INFO L85 PathProgramCache]: Analyzing trace with hash -601738414, now seen corresponding path program 1 times [2022-04-07 01:15:54,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:15:54,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [927144692] [2022-04-07 01:15:54,328 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:15:54,328 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:15:54,328 INFO L85 PathProgramCache]: Analyzing trace with hash -601738414, now seen corresponding path program 2 times [2022-04-07 01:15:54,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:15:54,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045562582] [2022-04-07 01:15:54,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:15:54,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:15:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:54,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:15:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:54,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:15:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:54,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:15:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:54,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-07 01:15:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:54,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 01:15:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:54,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:15:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:54,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-07 01:15:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:54,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-07 01:15:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:54,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-07 01:15:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:54,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:15:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:54,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:15:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:54,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-04-07 01:15:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:15:54,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-07 01:15:54,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:15:54,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045562582] [2022-04-07 01:15:54,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045562582] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:15:54,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112289450] [2022-04-07 01:15:54,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:15:54,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:15:54,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:15:54,668 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:15:54,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-04-07 01:15:57,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:15:57,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:15:57,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 2311 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-07 01:15:57,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:15:58,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:15:58,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:15:58,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112289450] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:15:58,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:15:58,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-04-07 01:15:58,043 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:15:58,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [927144692] [2022-04-07 01:15:58,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [927144692] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:15:58,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:15:58,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 01:15:58,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023886579] [2022-04-07 01:15:58,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:15:58,043 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-07 01:15:58,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:15:58,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-07 01:15:58,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:15:58,044 INFO L87 Difference]: Start difference. First operand 3564 states and 4992 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-07 01:16:03,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:16:03,816 INFO L93 Difference]: Finished difference Result 4885 states and 6888 transitions. [2022-04-07 01:16:03,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-07 01:16:03,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2022-04-07 01:16:03,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:16:03,825 INFO L225 Difference]: With dead ends: 4885 [2022-04-07 01:16:03,826 INFO L226 Difference]: Without dead ends: 3618 [2022-04-07 01:16:03,834 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-04-07 01:16:03,834 INFO L913 BasicCegarLoop]: 2737 mSDtfsCounter, 5400 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 1586 mSolverCounterSat, 762 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5401 SdHoareTripleChecker+Valid, 5116 SdHoareTripleChecker+Invalid, 2348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 762 IncrementalHoareTripleChecker+Valid, 1586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-04-07 01:16:03,834 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5401 Valid, 5116 Invalid, 2348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [762 Valid, 1586 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-04-07 01:16:03,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3618 states. [2022-04-07 01:16:06,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3618 to 3561. [2022-04-07 01:16:06,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3561 states, 2397 states have (on average 1.323738005840634) internal successors, (3173), 2471 states have internal predecessors, (3173), 898 states have call successors, (898), 249 states have call predecessors, (898), 265 states have return successors, (914), 882 states have call predecessors, (914), 891 states have call successors, (914) [2022-04-07 01:16:06,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 4985 transitions. [2022-04-07 01:16:06,232 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 4985 transitions. Word has length 106 [2022-04-07 01:16:06,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:16:06,232 INFO L478 AbstractCegarLoop]: Abstraction has 3561 states and 4985 transitions. [2022-04-07 01:16:06,232 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-07 01:16:06,232 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 4985 transitions. [2022-04-07 01:16:06,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-04-07 01:16:06,233 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:16:06,234 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:16:06,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-04-07 01:16:06,456 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:16:06,456 INFO L403 AbstractCegarLoop]: === Iteration 96 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:16:06,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:16:06,457 INFO L85 PathProgramCache]: Analyzing trace with hash -711041418, now seen corresponding path program 1 times [2022-04-07 01:16:06,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:16:06,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1448417999] [2022-04-07 01:16:06,462 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:16:06,462 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:16:06,462 INFO L85 PathProgramCache]: Analyzing trace with hash -711041418, now seen corresponding path program 2 times [2022-04-07 01:16:06,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:16:06,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703252528] [2022-04-07 01:16:06,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:16:06,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:16:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:06,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:16:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:06,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:16:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:06,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:16:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:06,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-07 01:16:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:06,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 01:16:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:06,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:16:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:06,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 01:16:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:06,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-07 01:16:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:06,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:16:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:06,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-07 01:16:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:06,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:16:06,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:16:06,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703252528] [2022-04-07 01:16:06,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703252528] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:16:06,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794985062] [2022-04-07 01:16:06,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:16:06,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:16:06,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:16:06,849 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:16:06,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-04-07 01:16:09,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:16:09,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:16:09,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-07 01:16:09,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:16:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-07 01:16:09,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:16:09,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794985062] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:16:09,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:16:09,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-04-07 01:16:09,803 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:16:09,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1448417999] [2022-04-07 01:16:09,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1448417999] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:16:09,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:16:09,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 01:16:09,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904433295] [2022-04-07 01:16:09,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:16:09,803 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 01:16:09,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:16:09,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 01:16:09,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-04-07 01:16:09,804 INFO L87 Difference]: Start difference. First operand 3561 states and 4985 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 6 states have internal predecessors, (79), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 1 states have call successors, (10) [2022-04-07 01:16:12,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:16:12,252 INFO L93 Difference]: Finished difference Result 3622 states and 5057 transitions. [2022-04-07 01:16:12,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-07 01:16:12,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 6 states have internal predecessors, (79), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 1 states have call successors, (10) Word has length 103 [2022-04-07 01:16:12,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:16:12,268 INFO L225 Difference]: With dead ends: 3622 [2022-04-07 01:16:12,269 INFO L226 Difference]: Without dead ends: 3577 [2022-04-07 01:16:12,269 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-04-07 01:16:12,269 INFO L913 BasicCegarLoop]: 2320 mSDtfsCounter, 20 mSDsluCounter, 13878 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 16198 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:16:12,270 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 16198 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-07 01:16:12,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2022-04-07 01:16:14,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3561. [2022-04-07 01:16:14,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3561 states, 2397 states have (on average 1.323738005840634) internal successors, (3173), 2471 states have internal predecessors, (3173), 898 states have call successors, (898), 249 states have call predecessors, (898), 265 states have return successors, (914), 882 states have call predecessors, (914), 891 states have call successors, (914) [2022-04-07 01:16:14,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 4985 transitions. [2022-04-07 01:16:14,690 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 4985 transitions. Word has length 103 [2022-04-07 01:16:14,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:16:14,690 INFO L478 AbstractCegarLoop]: Abstraction has 3561 states and 4985 transitions. [2022-04-07 01:16:14,690 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 6 states have internal predecessors, (79), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 1 states have call successors, (10) [2022-04-07 01:16:14,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 4985 transitions. [2022-04-07 01:16:14,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-04-07 01:16:14,692 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:16:14,692 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:16:14,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-04-07 01:16:14,915 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2022-04-07 01:16:14,915 INFO L403 AbstractCegarLoop]: === Iteration 97 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:16:14,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:16:14,916 INFO L85 PathProgramCache]: Analyzing trace with hash 413445426, now seen corresponding path program 1 times [2022-04-07 01:16:14,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:16:14,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [55389402] [2022-04-07 01:16:14,918 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:16:14,918 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:16:14,918 INFO L85 PathProgramCache]: Analyzing trace with hash 413445426, now seen corresponding path program 2 times [2022-04-07 01:16:14,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:16:14,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72248842] [2022-04-07 01:16:14,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:16:14,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:16:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:15,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:16:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:15,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:16:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:15,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:16:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:15,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-07 01:16:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:15,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 01:16:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:15,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:16:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:15,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 01:16:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:15,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:16:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:15,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:16:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:15,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-07 01:16:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:15,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 01:16:15,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:16:15,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72248842] [2022-04-07 01:16:15,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72248842] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:16:15,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742148305] [2022-04-07 01:16:15,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:16:15,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:16:15,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:16:15,340 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:16:15,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-04-07 01:16:18,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:16:18,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:16:18,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 1830 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-07 01:16:18,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 01:16:18,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-07 01:16:18,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 01:16:18,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742148305] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:16:18,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 01:16:18,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-04-07 01:16:18,476 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 01:16:18,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [55389402] [2022-04-07 01:16:18,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [55389402] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 01:16:18,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 01:16:18,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 01:16:18,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303050062] [2022-04-07 01:16:18,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 01:16:18,477 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 01:16:18,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 01:16:18,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 01:16:18,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-04-07 01:16:18,477 INFO L87 Difference]: Start difference. First operand 3561 states and 4985 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 1 states have call successors, (10) [2022-04-07 01:16:20,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 01:16:20,937 INFO L93 Difference]: Finished difference Result 3622 states and 5057 transitions. [2022-04-07 01:16:20,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-07 01:16:20,938 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 1 states have call successors, (10) Word has length 102 [2022-04-07 01:16:20,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 01:16:20,946 INFO L225 Difference]: With dead ends: 3622 [2022-04-07 01:16:20,946 INFO L226 Difference]: Without dead ends: 3577 [2022-04-07 01:16:20,947 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-04-07 01:16:20,947 INFO L913 BasicCegarLoop]: 2320 mSDtfsCounter, 20 mSDsluCounter, 13878 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 16198 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-07 01:16:20,947 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 16198 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-07 01:16:20,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2022-04-07 01:16:23,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3561. [2022-04-07 01:16:23,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3561 states, 2397 states have (on average 1.323738005840634) internal successors, (3173), 2471 states have internal predecessors, (3173), 898 states have call successors, (898), 249 states have call predecessors, (898), 265 states have return successors, (914), 882 states have call predecessors, (914), 891 states have call successors, (914) [2022-04-07 01:16:23,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 4985 transitions. [2022-04-07 01:16:23,405 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 4985 transitions. Word has length 102 [2022-04-07 01:16:23,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 01:16:23,405 INFO L478 AbstractCegarLoop]: Abstraction has 3561 states and 4985 transitions. [2022-04-07 01:16:23,405 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 1 states have call successors, (10) [2022-04-07 01:16:23,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 4985 transitions. [2022-04-07 01:16:23,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-04-07 01:16:23,406 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 01:16:23,407 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 01:16:23,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-04-07 01:16:23,619 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2022-04-07 01:16:23,619 INFO L403 AbstractCegarLoop]: === Iteration 98 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 01:16:23,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 01:16:23,620 INFO L85 PathProgramCache]: Analyzing trace with hash -2088030682, now seen corresponding path program 1 times [2022-04-07 01:16:23,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 01:16:23,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1594688045] [2022-04-07 01:16:23,622 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-04-07 01:16:23,622 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-07 01:16:23,622 INFO L85 PathProgramCache]: Analyzing trace with hash -2088030682, now seen corresponding path program 2 times [2022-04-07 01:16:23,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 01:16:23,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54516192] [2022-04-07 01:16:23,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 01:16:23,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 01:16:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:23,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 01:16:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:23,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 01:16:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:23,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:16:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:23,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-07 01:16:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:24,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:16:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:24,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 01:16:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:24,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:16:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:24,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-07 01:16:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:24,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:16:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:24,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 01:16:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:24,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-07 01:16:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:24,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 01:16:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 01:16:24,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 01:16:24,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 01:16:24,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54516192] [2022-04-07 01:16:24,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54516192] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-07 01:16:24,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119075751] [2022-04-07 01:16:24,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-07 01:16:24,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 01:16:24,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 01:16:24,121 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 01:16:24,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-04-07 01:16:27,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-07 01:16:27,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-07 01:16:27,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-07 01:16:27,076 INFO L286 TraceCheckSpWp]: Computing forward predicates...