/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/ntdrivers/parport.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 19:03:11,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 19:03:11,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 19:03:11,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 19:03:11,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 19:03:11,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 19:03:11,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 19:03:11,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 19:03:11,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 19:03:11,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 19:03:11,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 19:03:11,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 19:03:11,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 19:03:11,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 19:03:11,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 19:03:11,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 19:03:11,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 19:03:11,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 19:03:11,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 19:03:11,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 19:03:11,814 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 19:03:11,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 19:03:11,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 19:03:11,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 19:03:11,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 19:03:11,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-06 19:03:11,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 19:03:11,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 19:03:11,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 19:03:11,829 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-06 19:03:11,839 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 19:03:11,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 19:03:11,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 19:03:11,840 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 19:03:11,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 19:03:11,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 19:03:11,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 19:03:11,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 19:03:11,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 19:03:11,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 19:03:11,842 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 19:03:11,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 19:03:11,842 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 19:03:11,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 19:03:11,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 19:03:11,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 19:03:11,842 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 19:03:11,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 19:03:11,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 19:03:11,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 19:03:11,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-06 19:03:11,843 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-06 19:03:11,843 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-06 19:03:11,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 19:03:11,843 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-06 19:03:11,844 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 19:03:12,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 19:03:12,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 19:03:12,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 19:03:12,058 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 19:03:12,058 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 19:03:12,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/parport.i.cil-2.c [2022-04-06 19:03:12,112 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4e82525c/8f116225487442159dfda031472459b2/FLAG299c65225 [2022-04-06 19:03:12,725 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 19:03:12,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/parport.i.cil-2.c [2022-04-06 19:03:12,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4e82525c/8f116225487442159dfda031472459b2/FLAG299c65225 [2022-04-06 19:03:13,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4e82525c/8f116225487442159dfda031472459b2 [2022-04-06 19:03:13,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 19:03:13,085 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-06 19:03:13,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 19:03:13,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 19:03:13,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 19:03:13,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 07:03:13" (1/1) ... [2022-04-06 19:03:13,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42586d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:03:13, skipping insertion in model container [2022-04-06 19:03:13,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 07:03:13" (1/1) ... [2022-04-06 19:03:13,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 19:03:13,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 19:03:13,760 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] [2022-04-06 19:03:14,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 19:03:14,331 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 19:03:14,391 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] [2022-04-06 19:03:14,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 19:03:14,647 INFO L208 MainTranslator]: Completed translation [2022-04-06 19:03:14,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:03:14 WrapperNode [2022-04-06 19:03:14,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 19:03:14,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 19:03:14,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 19:03:14,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 19:03:14,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:03:14" (1/1) ... [2022-04-06 19:03:14,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:03:14" (1/1) ... [2022-04-06 19:03:14,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:03:14" (1/1) ... [2022-04-06 19:03:14,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:03:14" (1/1) ... [2022-04-06 19:03:14,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:03:14" (1/1) ... [2022-04-06 19:03:14,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:03:14" (1/1) ... [2022-04-06 19:03:14,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:03:14" (1/1) ... [2022-04-06 19:03:14,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 19:03:14,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 19:03:14,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 19:03:14,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 19:03:14,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:03:14" (1/1) ... [2022-04-06 19:03:14,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 19:03:14,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:03:14,928 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) [2022-04-06 19:03:14,947 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 [2022-04-06 19:03:14,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 19:03:14,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 19:03:14,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2022-04-06 19:03:14,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2022-04-06 19:03:14,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~TO~VOID [2022-04-06 19:03:14,964 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 19:03:14,964 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 19:03:14,964 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-04-06 19:03:14,964 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlIntegerToUnicodeString [2022-04-06 19:03:14,964 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlUnicodeStringToInteger [2022-04-06 19:03:14,965 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareUnicodeString [2022-04-06 19:03:14,965 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAppendUnicodeStringToString [2022-04-06 19:03:14,966 INFO L138 BoogieDeclarations]: Found implementation of procedure READ_PORT_UCHAR [2022-04-06 19:03:14,966 INFO L138 BoogieDeclarations]: Found implementation of procedure WRITE_PORT_UCHAR [2022-04-06 19:03:14,966 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-04-06 19:03:14,966 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2022-04-06 19:03:14,966 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-04-06 19:03:14,966 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeDpc [2022-04-06 19:03:14,966 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInsertQueueDpc [2022-04-06 19:03:14,966 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSynchronizeExecution [2022-04-06 19:03:14,966 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTimeIncrement [2022-04-06 19:03:14,966 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAcquireCancelSpinLock [2022-04-06 19:03:14,966 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateErrorLogEntry [2022-04-06 19:03:14,966 INFO L138 BoogieDeclarations]: Found implementation of procedure IoConnectInterrupt [2022-04-06 19:03:14,966 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReportResourceUsage [2022-04-06 19:03:14,966 INFO L138 BoogieDeclarations]: Found implementation of procedure IoInitializeRemoveLockEx [2022-04-06 19:03:14,966 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseRemoveLockEx [2022-04-06 19:03:14,966 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseRemoveLockAndWaitEx [2022-04-06 19:03:14,967 INFO L138 BoogieDeclarations]: Found implementation of procedure IoWriteErrorLogEntry [2022-04-06 19:03:14,967 INFO L138 BoogieDeclarations]: Found implementation of procedure IoWMIRegistrationControl [2022-04-06 19:03:14,967 INFO L138 BoogieDeclarations]: Found implementation of procedure IoOpenDeviceRegistryKey [2022-04-06 19:03:14,967 INFO L138 BoogieDeclarations]: Found implementation of procedure KeStallExecutionProcessor [2022-04-06 19:03:14,967 INFO L138 BoogieDeclarations]: Found implementation of procedure PoRequestPowerIrp [2022-04-06 19:03:14,967 INFO L138 BoogieDeclarations]: Found implementation of procedure PoSetPowerState [2022-04-06 19:03:14,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfReferenceObject [2022-04-06 19:03:14,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwQueryValueKey [2022-04-06 19:03:14,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwSetValueKey [2022-04-06 19:03:14,967 INFO L138 BoogieDeclarations]: Found implementation of procedure WmiCompleteRequest [2022-04-06 19:03:14,967 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-04-06 19:03:14,967 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchCleanup [2022-04-06 19:03:14,967 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDebugDumpPnpIrpInfo [2022-04-06 19:03:14,967 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLock [2022-04-06 19:03:14,967 INFO L138 BoogieDeclarations]: Found implementation of procedure PptReleaseRemoveLock [2022-04-06 19:03:14,967 INFO L138 BoogieDeclarations]: Found implementation of procedure PptReleaseRemoveLockAndWait [2022-04-06 19:03:14,968 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDebugDumpResourceList [2022-04-06 19:03:14,968 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDebugDumpResourceRequirementsList [2022-04-06 19:03:14,968 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLogError [2022-04-06 19:03:14,968 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-04-06 19:03:14,968 INFO L138 BoogieDeclarations]: Found implementation of procedure PptUnload [2022-04-06 19:03:14,968 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCleanRemovalRelationsList [2022-04-06 19:03:14,968 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAddPptRemovalRelation [2022-04-06 19:03:14,968 INFO L138 BoogieDeclarations]: Found implementation of procedure PptRemovePptRemovalRelation [2022-04-06 19:03:14,968 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDumpRemovalRelationsList [2022-04-06 19:03:14,968 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDumpPptRemovalRelationsStruct [2022-04-06 19:03:14,968 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchInternalDeviceControl [2022-04-06 19:03:14,968 INFO L138 BoogieDeclarations]: Found implementation of procedure PptIsNecR98Machine [2022-04-06 19:03:14,968 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchCreate [2022-04-06 19:03:14,968 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchClose [2022-04-06 19:03:14,968 INFO L138 BoogieDeclarations]: Found implementation of procedure PptInitiate1284_3 [2022-04-06 19:03:14,968 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectDevice [2022-04-06 19:03:14,968 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectDevice [2022-04-06 19:03:14,969 INFO L138 BoogieDeclarations]: Found implementation of procedure Ppt1284_3AssignAddress [2022-04-06 19:03:14,969 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCheckIfNon1284_3Present [2022-04-06 19:03:14,969 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCheckIfStl1284_3 [2022-04-06 19:03:14,969 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCheckIfStlProductId [2022-04-06 19:03:14,969 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSend1284_3Command [2022-04-06 19:03:14,969 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectChipFilter [2022-04-06 19:03:14,969 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectPortType [2022-04-06 19:03:14,969 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectPortCapabilities [2022-04-06 19:03:14,969 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEcpPort [2022-04-06 19:03:14,969 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEppPortIfDot3DevicePresent [2022-04-06 19:03:14,970 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEppPortIfUserRequested [2022-04-06 19:03:14,970 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEppPort [2022-04-06 19:03:14,970 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectBytePort [2022-04-06 19:03:14,970 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoDepth [2022-04-06 19:03:14,970 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoWidth [2022-04-06 19:03:14,970 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetChipMode [2022-04-06 19:03:14,970 INFO L138 BoogieDeclarations]: Found implementation of procedure PptClearChipMode [2022-04-06 19:03:14,971 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrSetMode [2022-04-06 19:03:14,971 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetByteMode [2022-04-06 19:03:14,971 INFO L138 BoogieDeclarations]: Found implementation of procedure PptClearByteMode [2022-04-06 19:03:14,971 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCheckByteMode [2022-04-06 19:03:14,971 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrClearMode [2022-04-06 19:03:14,971 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFindNatChip [2022-04-06 19:03:14,972 INFO L138 BoogieDeclarations]: Found implementation of procedure PptBuildResourceList [2022-04-06 19:03:14,972 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpBuildRemovalRelations [2022-04-06 19:03:14,972 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStartScanPciCardCmResourceList [2022-04-06 19:03:14,972 INFO L138 BoogieDeclarations]: Found implementation of procedure PptIsPci [2022-04-06 19:03:14,972 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCompleteRequest [2022-04-06 19:03:14,972 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpInitDispatchFunctionTable [2022-04-06 19:03:14,972 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpAddDevice [2022-04-06 19:03:14,972 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchPnp [2022-04-06 19:03:14,972 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStartDevice [2022-04-06 19:03:14,972 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStartScanCmResourceList [2022-04-06 19:03:14,972 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStartValidateResources [2022-04-06 19:03:14,972 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterResourceRequirements [2022-04-06 19:03:14,972 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterExistsNonIrqResourceList [2022-04-06 19:03:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterRemoveIrqResourceLists [2022-04-06 19:03:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterGetEndOfResourceRequirementsList [2022-04-06 19:03:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterNukeIrqResourceDescriptorsFromAllLists [2022-04-06 19:03:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterNukeIrqResourceDescriptors [2022-04-06 19:03:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpQueryDeviceRelations [2022-04-06 19:03:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpQueryStopDevice [2022-04-06 19:03:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpCancelStopDevice [2022-04-06 19:03:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStopDevice [2022-04-06 19:03:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpQueryRemoveDevice [2022-04-06 19:03:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpCancelRemoveDevice [2022-04-06 19:03:14,974 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpRemoveDevice [2022-04-06 19:03:14,974 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpSurpriseRemoval [2022-04-06 19:03:14,974 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpListContainsIrqResourceDescriptor [2022-04-06 19:03:14,974 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpBounceAndCatchPnpIrp [2022-04-06 19:03:14,974 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2022-04-06 19:03:14,974 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpUnhandledIrp [2022-04-06 19:03:14,975 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPowerComplete [2022-04-06 19:03:14,975 INFO L138 BoogieDeclarations]: Found implementation of procedure InitNEC_98 [2022-04-06 19:03:14,975 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchPower [2022-04-06 19:03:14,975 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockDiskModeByte [2022-04-06 19:03:14,975 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockPrtModeByte [2022-04-06 19:03:14,975 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipSetDiskMode [2022-04-06 19:03:14,975 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipCheckDevice [2022-04-06 19:03:14,975 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectLegacyZip [2022-04-06 19:03:14,975 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectLegacyZip [2022-04-06 19:03:14,975 INFO L138 BoogieDeclarations]: Found implementation of procedure PptRegInitDriverSettings [2022-04-06 19:03:14,976 INFO L138 BoogieDeclarations]: Found implementation of procedure PptRegGetDeviceParameterDword [2022-04-06 19:03:14,976 INFO L138 BoogieDeclarations]: Found implementation of procedure PptRegSetDeviceParameterDword [2022-04-06 19:03:14,976 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFailRequest [2022-04-06 19:03:14,976 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLockOrFailIrp [2022-04-06 19:03:14,976 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchPreProcessIrp [2022-04-06 19:03:14,976 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchPostProcessIrp [2022-04-06 19:03:14,976 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchCompletionRoutine [2022-04-06 19:03:14,976 INFO L138 BoogieDeclarations]: Found implementation of procedure PptGetPortNameFromPhysicalDeviceObject [2022-04-06 19:03:14,976 INFO L138 BoogieDeclarations]: Found implementation of procedure PptConnectInterrupt [2022-04-06 19:03:14,976 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDisconnectInterrupt [2022-04-06 19:03:14,976 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedIncrement [2022-04-06 19:03:14,977 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedDecrement [2022-04-06 19:03:14,977 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedRead [2022-04-06 19:03:14,978 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedQueue [2022-04-06 19:03:14,978 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedDisconnect [2022-04-06 19:03:14,980 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCancelRoutine [2022-04-06 19:03:14,980 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFreePortDpc [2022-04-06 19:03:14,984 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTryAllocatePortAtInterruptLevel [2022-04-06 19:03:14,984 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFreePortFromInterruptLevel [2022-04-06 19:03:14,984 INFO L138 BoogieDeclarations]: Found implementation of procedure PptInterruptService [2022-04-06 19:03:14,984 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTryAllocatePort [2022-04-06 19:03:14,984 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTraversePortCheckList [2022-04-06 19:03:14,984 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFreePort [2022-04-06 19:03:14,984 INFO L138 BoogieDeclarations]: Found implementation of procedure PptQueryNumWaiters [2022-04-06 19:03:14,984 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetCancelRoutine [2022-04-06 19:03:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTickCount [2022-04-06 19:03:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure CheckPort [2022-04-06 19:03:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure PptBuildParallelPortDeviceName [2022-04-06 19:03:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure PptInitializeDeviceExtension [2022-04-06 19:03:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure PptGetPortNumberFromLptName [2022-04-06 19:03:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure PptBuildDeviceObject [2022-04-06 19:03:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure PptWmiInitWmi [2022-04-06 19:03:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchSystemControl [2022-04-06 19:03:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure PptWmiQueryWmiRegInfo [2022-04-06 19:03:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure PptWmiQueryWmiDataBlock [2022-04-06 19:03:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-04-06 19:03:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-04-06 19:03:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 19:03:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-04-06 19:03:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-04-06 19:03:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-04-06 19:03:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-04-06 19:03:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-04-06 19:03:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-04-06 19:03:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-04-06 19:03:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-04-06 19:03:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-04-06 19:03:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-04-06 19:03:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-04-06 19:03:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-04-06 19:03:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-04-06 19:03:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-04-06 19:03:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-04-06 19:03:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-04-06 19:03:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-04-06 19:03:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-04-06 19:03:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-04-06 19:03:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-04-06 19:03:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-04-06 19:03:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-04-06 19:03:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-04-06 19:03:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-04-06 19:03:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-04-06 19:03:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-04-06 19:03:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-04-06 19:03:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-04-06 19:03:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-04-06 19:03:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-04-06 19:03:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-04-06 19:03:14,987 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-04-06 19:03:14,987 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-04-06 19:03:14,987 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-04-06 19:03:14,987 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-04-06 19:03:14,987 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-04-06 19:03:14,987 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-04-06 19:03:14,987 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-04-06 19:03:14,987 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-04-06 19:03:14,987 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-04-06 19:03:14,987 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-04-06 19:03:14,987 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-04-06 19:03:14,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-04-06 19:03:14,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-04-06 19:03:14,988 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-04-06 19:03:15,020 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-04-06 19:03:15,020 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-04-06 19:03:15,020 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-04-06 19:03:15,020 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-04-06 19:03:15,020 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-04-06 19:03:15,020 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-04-06 19:03:15,020 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-04-06 19:03:15,021 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-04-06 19:03:15,021 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-04-06 19:03:15,021 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-04-06 19:03:15,021 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-04-06 19:03:15,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-04-06 19:03:15,021 INFO L138 BoogieDeclarations]: Found implementation of procedure WmiSystemControl [2022-04-06 19:03:15,021 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAcquireRemoveLockEx [2022-04-06 19:03:15,021 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-04-06 19:03:15,021 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-04-06 19:03:15,021 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-04-06 19:03:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 19:03:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 19:03:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 19:03:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 19:03:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 19:03:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-04-06 19:03:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-06 19:03:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 19:03:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-06 19:03:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-04-06 19:03:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-04-06 19:03:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-04-06 19:03:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-04-06 19:03:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-04-06 19:03:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-04-06 19:03:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-04-06 19:03:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-04-06 19:03:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure RtlIntegerToUnicodeString [2022-04-06 19:03:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 19:03:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure RtlUnicodeStringToInteger [2022-04-06 19:03:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 19:03:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-04-06 19:03:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-04-06 19:03:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-04-06 19:03:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareUnicodeString [2022-04-06 19:03:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-04-06 19:03:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAppendUnicodeStringToString [2022-04-06 19:03:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-04-06 19:03:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-04-06 19:03:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure READ_PORT_UCHAR [2022-04-06 19:03:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure WRITE_PORT_UCHAR [2022-04-06 19:03:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-04-06 19:03:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2022-04-06 19:03:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-04-06 19:03:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeDpc [2022-04-06 19:03:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure KeInsertQueueDpc [2022-04-06 19:03:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-04-06 19:03:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure KeSynchronizeExecution [2022-04-06 19:03:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-04-06 19:03:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-04-06 19:03:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-04-06 19:03:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-04-06 19:03:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-04-06 19:03:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-04-06 19:03:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-04-06 19:03:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-04-06 19:03:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTimeIncrement [2022-04-06 19:03:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-04-06 19:03:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-04-06 19:03:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-04-06 19:03:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-04-06 19:03:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-04-06 19:03:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-04-06 19:03:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-04-06 19:03:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-04-06 19:03:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-04-06 19:03:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-04-06 19:03:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-04-06 19:03:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-04-06 19:03:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-04-06 19:03:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-04-06 19:03:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-04-06 19:03:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure IoAcquireCancelSpinLock [2022-04-06 19:03:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateErrorLogEntry [2022-04-06 19:03:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-06 19:03:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-04-06 19:03:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-04-06 19:03:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-04-06 19:03:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-04-06 19:03:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-04-06 19:03:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-04-06 19:03:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure IoConnectInterrupt [2022-04-06 19:03:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2022-04-06 19:03:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-04-06 19:03:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-04-06 19:03:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-04-06 19:03:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-04-06 19:03:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-04-06 19:03:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-04-06 19:03:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-04-06 19:03:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-04-06 19:03:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-04-06 19:03:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-04-06 19:03:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-04-06 19:03:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure IoReportResourceUsage [2022-04-06 19:03:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-04-06 19:03:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure IoInitializeRemoveLockEx [2022-04-06 19:03:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure IoAcquireRemoveLockEx [2022-04-06 19:03:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseRemoveLockEx [2022-04-06 19:03:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseRemoveLockAndWaitEx [2022-04-06 19:03:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure IoWriteErrorLogEntry [2022-04-06 19:03:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure IoWMIRegistrationControl [2022-04-06 19:03:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure IoOpenDeviceRegistryKey [2022-04-06 19:03:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-04-06 19:03:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-04-06 19:03:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure KeStallExecutionProcessor [2022-04-06 19:03:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure PoRequestPowerIrp [2022-04-06 19:03:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure PoSetPowerState [2022-04-06 19:03:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-06 19:03:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 19:03:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-04-06 19:03:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-04-06 19:03:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-04-06 19:03:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure ObfReferenceObject [2022-04-06 19:03:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-04-06 19:03:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-04-06 19:03:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure ZwQueryValueKey [2022-04-06 19:03:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure ZwSetValueKey [2022-04-06 19:03:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure WmiCompleteRequest [2022-04-06 19:03:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure WmiSystemControl [2022-04-06 19:03:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure PptCompleteRequest [2022-04-06 19:03:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-04-06 19:03:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure PptWmiInitWmi [2022-04-06 19:03:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchSystemControl [2022-04-06 19:03:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpInitDispatchFunctionTable [2022-04-06 19:03:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpAddDevice [2022-04-06 19:03:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchPnp [2022-04-06 19:03:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure PptFailRequest [2022-04-06 19:03:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchPreProcessIrp [2022-04-06 19:03:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchPostProcessIrp [2022-04-06 19:03:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-04-06 19:03:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptUnload [2022-04-06 19:03:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchCompletionRoutine [2022-04-06 19:03:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptLogError [2022-04-06 19:03:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptConnectInterrupt [2022-04-06 19:03:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptDisconnectInterrupt [2022-04-06 19:03:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchCreate [2022-04-06 19:03:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchClose [2022-04-06 19:03:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedIncrement [2022-04-06 19:03:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedDecrement [2022-04-06 19:03:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedRead [2022-04-06 19:03:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedQueue [2022-04-06 19:03:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedDisconnect [2022-04-06 19:03:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptCancelRoutine [2022-04-06 19:03:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptFreePortDpc [2022-04-06 19:03:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptTryAllocatePortAtInterruptLevel [2022-04-06 19:03:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptFreePortFromInterruptLevel [2022-04-06 19:03:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptInterruptService [2022-04-06 19:03:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptTryAllocatePort [2022-04-06 19:03:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptTraversePortCheckList [2022-04-06 19:03:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure PptFreePort [2022-04-06 19:03:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure PptQueryNumWaiters [2022-04-06 19:03:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchInternalDeviceControl [2022-04-06 19:03:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchCleanup [2022-04-06 19:03:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure PptIsNecR98Machine [2022-04-06 19:03:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchPower [2022-04-06 19:03:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure PptRegInitDriverSettings [2022-04-06 19:03:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure PptGetPortNameFromPhysicalDeviceObject [2022-04-06 19:03:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetCancelRoutine [2022-04-06 19:03:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLockOrFailIrp [2022-04-06 19:03:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure PptDebugDumpPnpIrpInfo [2022-04-06 19:03:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLock [2022-04-06 19:03:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure PptReleaseRemoveLock [2022-04-06 19:03:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure PptReleaseRemoveLockAndWait [2022-04-06 19:03:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure PptDebugDumpResourceList [2022-04-06 19:03:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure PptDebugDumpResourceRequirementsList [2022-04-06 19:03:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectChipFilter [2022-04-06 19:03:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectPortType [2022-04-06 19:03:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetChipMode [2022-04-06 19:03:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure PptClearChipMode [2022-04-06 19:03:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure PptInitiate1284_3 [2022-04-06 19:03:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectDevice [2022-04-06 19:03:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectDevice [2022-04-06 19:03:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure Ppt1284_3AssignAddress [2022-04-06 19:03:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure PptSend1284_3Command [2022-04-06 19:03:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectLegacyZip [2022-04-06 19:03:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectLegacyZip [2022-04-06 19:03:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure PptDumpRemovalRelationsList [2022-04-06 19:03:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure PptRegGetDeviceParameterDword [2022-04-06 19:03:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure PptRegSetDeviceParameterDword [2022-04-06 19:03:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure PptBuildParallelPortDeviceName [2022-04-06 19:03:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure PptInitializeDeviceExtension [2022-04-06 19:03:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure PptGetPortNumberFromLptName [2022-04-06 19:03:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure PptBuildDeviceObject [2022-04-06 19:03:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEppPort [2022-04-06 19:03:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure PptCleanRemovalRelationsList [2022-04-06 19:03:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure CheckPort [2022-04-06 19:03:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-04-06 19:03:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-04-06 19:03:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-04-06 19:03:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure PptAddPptRemovalRelation [2022-04-06 19:03:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure PptRemovePptRemovalRelation [2022-04-06 19:03:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure PptDumpPptRemovalRelationsStruct [2022-04-06 19:03:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure PptCheckIfStl1284_3 [2022-04-06 19:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure PptCheckIfNon1284_3Present [2022-04-06 19:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure PptCheckIfStlProductId [2022-04-06 19:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectPortCapabilities [2022-04-06 19:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEcpPort [2022-04-06 19:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEppPortIfDot3DevicePresent [2022-04-06 19:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEppPortIfUserRequested [2022-04-06 19:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectBytePort [2022-04-06 19:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoDepth [2022-04-06 19:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoWidth [2022-04-06 19:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrSetMode [2022-04-06 19:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrClearMode [2022-04-06 19:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure PptFindNatChip [2022-04-06 19:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure PptBuildResourceList [2022-04-06 19:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetByteMode [2022-04-06 19:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure PptClearByteMode [2022-04-06 19:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure PptCheckByteMode [2022-04-06 19:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2022-04-06 19:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterResourceRequirements [2022-04-06 19:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpQueryDeviceRelations [2022-04-06 19:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpQueryStopDevice [2022-04-06 19:03:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpCancelStopDevice [2022-04-06 19:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStopDevice [2022-04-06 19:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpQueryRemoveDevice [2022-04-06 19:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpCancelRemoveDevice [2022-04-06 19:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpRemoveDevice [2022-04-06 19:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpSurpriseRemoval [2022-04-06 19:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpUnhandledIrp [2022-04-06 19:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStartDevice [2022-04-06 19:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStartValidateResources [2022-04-06 19:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStartScanCmResourceList [2022-04-06 19:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2022-04-06 19:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterNukeIrqResourceDescriptors [2022-04-06 19:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterNukeIrqResourceDescriptorsFromAllLists [2022-04-06 19:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterExistsNonIrqResourceList [2022-04-06 19:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterGetEndOfResourceRequirementsList [2022-04-06 19:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpListContainsIrqResourceDescriptor [2022-04-06 19:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterRemoveIrqResourceLists [2022-04-06 19:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpBounceAndCatchPnpIrp [2022-04-06 19:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpBuildRemovalRelations [2022-04-06 19:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStartScanPciCardCmResourceList [2022-04-06 19:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure PptIsPci [2022-04-06 19:03:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure PptPowerComplete [2022-04-06 19:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure InitNEC_98 [2022-04-06 19:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockDiskModeByte [2022-04-06 19:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockPrtModeByte [2022-04-06 19:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipSetDiskMode [2022-04-06 19:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipCheckDevice [2022-04-06 19:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~TO~VOID [2022-04-06 19:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTickCount [2022-04-06 19:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure PptWmiQueryWmiRegInfo [2022-04-06 19:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure PptWmiQueryWmiDataBlock [2022-04-06 19:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-04-06 19:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-04-06 19:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 19:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-04-06 19:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-04-06 19:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 19:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 19:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-04-06 19:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 19:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-04-06 19:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-04-06 19:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-04-06 19:03:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-04-06 19:03:15,732 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 19:03:15,735 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 19:03:15,764 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:15,805 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 19:03:15,805 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 19:03:15,994 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:16,089 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !false; [2022-04-06 19:03:16,089 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume false; [2022-04-06 19:03:16,112 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:16,140 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-04-06 19:03:16,140 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-04-06 19:03:16,140 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:16,148 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 19:03:16,148 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 19:03:16,277 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:16,308 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-04-06 19:03:16,308 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-04-06 19:03:16,310 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:16,320 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 19:03:16,320 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 19:03:16,492 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:16,505 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 19:03:16,506 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 19:03:16,576 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:16,591 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-04-06 19:03:16,591 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-04-06 19:03:16,637 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:16,665 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2022-04-06 19:03:16,665 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2022-04-06 19:03:16,665 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:16,676 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-04-06 19:03:16,676 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-04-06 19:03:16,690 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:16,694 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 19:03:16,694 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 19:03:16,826 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:19,930 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume !false; [2022-04-06 19:03:19,931 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume false; [2022-04-06 19:03:22,048 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:22,051 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 19:03:22,052 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 19:03:22,103 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:22,103 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:22,594 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-04-06 19:03:22,594 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2022-04-06 19:03:22,594 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-04-06 19:03:22,594 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2022-04-06 19:03:22,773 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:22,778 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 19:03:22,778 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 19:03:22,876 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:22,881 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 19:03:22,881 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 19:03:23,149 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:23,153 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 19:03:23,153 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 19:03:23,154 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:23,160 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 19:03:23,161 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 19:03:23,180 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:23,185 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 19:03:23,185 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 19:03:23,185 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:23,189 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 19:03:23,189 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 19:03:23,190 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:23,195 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 19:03:23,195 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 19:03:23,288 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:23,292 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 19:03:23,292 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 19:03:23,298 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:23,302 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 19:03:23,302 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 19:03:23,358 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:23,363 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 19:03:23,363 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 19:03:23,372 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:23,375 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 19:03:23,375 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 19:03:23,724 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:23,726 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 19:03:23,726 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 19:03:23,732 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:23,752 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-04-06 19:03:23,752 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-04-06 19:03:23,756 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:23,910 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume !false; [2022-04-06 19:03:23,910 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume false; [2022-04-06 19:03:24,181 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:24,185 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 19:03:24,185 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 19:03:24,314 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:24,356 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-04-06 19:03:24,356 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-04-06 19:03:24,405 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:26,869 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2022-04-06 19:03:26,870 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2022-04-06 19:03:26,910 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:26,934 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-04-06 19:03:26,934 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-04-06 19:03:26,934 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:26,952 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-04-06 19:03:26,952 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-04-06 19:03:26,977 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:26,985 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-04-06 19:03:26,985 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-04-06 19:03:27,133 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:27,136 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 19:03:27,136 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 19:03:27,268 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 19:03:27,284 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-04-06 19:03:27,284 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-04-06 19:03:27,382 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 19:03:27,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 19:03:27,406 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2022-04-06 19:03:27,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 07:03:27 BoogieIcfgContainer [2022-04-06 19:03:27,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 19:03:27,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 19:03:27,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 19:03:27,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 19:03:27,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 07:03:13" (1/3) ... [2022-04-06 19:03:27,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a043159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 07:03:27, skipping insertion in model container [2022-04-06 19:03:27,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:03:14" (2/3) ... [2022-04-06 19:03:27,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a043159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 07:03:27, skipping insertion in model container [2022-04-06 19:03:27,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 07:03:27" (3/3) ... [2022-04-06 19:03:27,424 INFO L111 eAbstractionObserver]: Analyzing ICFG parport.i.cil-2.c [2022-04-06 19:03:27,430 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-06 19:03:27,430 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 19:03:27,477 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 19:03:27,491 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 [2022-04-06 19:03:27,491 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 19:03:27,546 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) [2022-04-06 19:03:27,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-06 19:03:27,554 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:03:27,554 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] [2022-04-06 19:03:27,555 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:03:27,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:03:27,559 INFO L85 PathProgramCache]: Analyzing trace with hash -2073400986, now seen corresponding path program 1 times [2022-04-06 19:03:27,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:03:27,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [207877053] [2022-04-06 19:03:27,573 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 19:03:27,574 INFO L85 PathProgramCache]: Analyzing trace with hash -2073400986, now seen corresponding path program 2 times [2022-04-06 19:03:27,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:03:27,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152422589] [2022-04-06 19:03:27,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:03:27,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:03:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:28,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:03:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:28,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 19:03:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:28,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:03:28,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:03:28,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152422589] [2022-04-06 19:03:28,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152422589] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:03:28,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:03:28,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 19:03:28,238 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:03:28,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [207877053] [2022-04-06 19:03:28,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [207877053] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:03:28,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:03:28,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 19:03:28,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549441976] [2022-04-06 19:03:28,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:03:28,242 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 19:03:28,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:03:28,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 19:03:28,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-06 19:03:28,263 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) [2022-04-06 19:03:32,253 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 [] [2022-04-06 19:03:34,372 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:03:37,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:03:39,330 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:03:44,419 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:03:49,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:03:49,760 INFO L93 Difference]: Finished difference Result 4216 states and 6551 transitions. [2022-04-06 19:03:49,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 19:03:49,762 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 [2022-04-06 19:03:49,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:03:49,792 INFO L225 Difference]: With dead ends: 4216 [2022-04-06 19:03:49,792 INFO L226 Difference]: Without dead ends: 2226 [2022-04-06 19:03:49,807 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 [2022-04-06 19:03:49,809 INFO L913 BasicCegarLoop]: 2421 mSDtfsCounter, 3234 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 3763 mSolverCounterSat, 1561 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3637 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 5327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1561 IncrementalHoareTripleChecker+Valid, 3763 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2022-04-06 19:03:49,810 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3637 Valid, 2783 Invalid, 5327 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1561 Valid, 3763 Invalid, 3 Unknown, 0 Unchecked, 20.6s Time] [2022-04-06 19:03:49,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2022-04-06 19:03:50,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 1985. [2022-04-06 19:03:50,205 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) [2022-04-06 19:03:50,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2849 transitions. [2022-04-06 19:03:50,236 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2849 transitions. Word has length 22 [2022-04-06 19:03:50,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:03:50,237 INFO L478 AbstractCegarLoop]: Abstraction has 1985 states and 2849 transitions. [2022-04-06 19:03:50,237 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) [2022-04-06 19:03:50,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2849 transitions. [2022-04-06 19:03:50,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-06 19:03:50,238 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:03:50,238 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] [2022-04-06 19:03:50,238 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 19:03:50,238 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:03:50,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:03:50,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1828450504, now seen corresponding path program 1 times [2022-04-06 19:03:50,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:03:50,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1048564068] [2022-04-06 19:03:50,260 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:03:50,260 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:03:50,260 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:03:50,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1828450504, now seen corresponding path program 2 times [2022-04-06 19:03:50,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:03:50,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646249795] [2022-04-06 19:03:50,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:03:50,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:03:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:50,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:03:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:50,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:03:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:03:50,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:03:50,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646249795] [2022-04-06 19:03:50,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646249795] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:03:50,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074206014] [2022-04-06 19:03:50,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:03:50,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:03:50,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:03:50,585 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) [2022-04-06 19:03:50,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 19:03:51,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:03:51,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:03:51,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-06 19:03:51,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:03:51,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:03:51,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:03:51,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074206014] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:03:51,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:03:51,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-04-06 19:03:51,274 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:03:51,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1048564068] [2022-04-06 19:03:51,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1048564068] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:03:51,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:03:51,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:03:51,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194773769] [2022-04-06 19:03:51,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:03:51,275 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:03:51,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:03:51,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:03:51,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-06 19:03:51,276 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) [2022-04-06 19:03:51,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:03:51,790 INFO L93 Difference]: Finished difference Result 2005 states and 2875 transitions. [2022-04-06 19:03:51,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:03:51,790 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 [2022-04-06 19:03:51,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:03:51,802 INFO L225 Difference]: With dead ends: 2005 [2022-04-06 19:03:51,802 INFO L226 Difference]: Without dead ends: 1985 [2022-04-06 19:03:51,803 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 [2022-04-06 19:03:51,807 INFO L913 BasicCegarLoop]: 2846 mSDtfsCounter, 7 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5633 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:03:51,807 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 5633 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:03:51,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2022-04-06 19:03:52,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1985. [2022-04-06 19:03:52,153 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) [2022-04-06 19:03:52,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2848 transitions. [2022-04-06 19:03:52,164 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2848 transitions. Word has length 24 [2022-04-06 19:03:52,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:03:52,164 INFO L478 AbstractCegarLoop]: Abstraction has 1985 states and 2848 transitions. [2022-04-06 19:03:52,164 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) [2022-04-06 19:03:52,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2848 transitions. [2022-04-06 19:03:52,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-06 19:03:52,166 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:03:52,166 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] [2022-04-06 19:03:52,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-06 19:03:52,387 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 [2022-04-06 19:03:52,387 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:03:52,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:03:52,388 INFO L85 PathProgramCache]: Analyzing trace with hash -975584275, now seen corresponding path program 1 times [2022-04-06 19:03:52,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:03:52,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2046787321] [2022-04-06 19:03:52,393 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:03:52,393 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:03:52,393 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:03:52,393 INFO L85 PathProgramCache]: Analyzing trace with hash -975584275, now seen corresponding path program 2 times [2022-04-06 19:03:52,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:03:52,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213091067] [2022-04-06 19:03:52,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:03:52,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:03:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:52,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:03:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:52,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:03:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:52,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:03:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:52,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:03:52,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:03:52,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213091067] [2022-04-06 19:03:52,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213091067] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:03:52,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572875843] [2022-04-06 19:03:52,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:03:52,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:03:52,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:03:52,767 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) [2022-04-06 19:03:52,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 19:03:53,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:03:53,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:03:53,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 15 conjunts are in the unsatisfiable core [2022-04-06 19:03:53,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:03:53,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:03:53,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:03:53,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572875843] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:03:53,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:03:53,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-04-06 19:03:53,459 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:03:53,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2046787321] [2022-04-06 19:03:53,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2046787321] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:03:53,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:03:53,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:03:53,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494278353] [2022-04-06 19:03:53,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:03:53,460 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:03:53,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:03:53,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:03:53,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-06 19:03:53,461 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) [2022-04-06 19:03:54,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:03:54,370 INFO L93 Difference]: Finished difference Result 5045 states and 7333 transitions. [2022-04-06 19:03:54,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:03:54,371 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 [2022-04-06 19:03:54,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:03:54,392 INFO L225 Difference]: With dead ends: 5045 [2022-04-06 19:03:54,392 INFO L226 Difference]: Without dead ends: 3732 [2022-04-06 19:03:54,399 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 [2022-04-06 19:03:54,404 INFO L913 BasicCegarLoop]: 3528 mSDtfsCounter, 2726 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2726 SdHoareTripleChecker+Valid, 6084 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 19:03:54,405 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2726 Valid, 6084 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 19:03:54,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3732 states. [2022-04-06 19:03:55,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3732 to 3711. [2022-04-06 19:03:55,061 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) [2022-04-06 19:03:55,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3711 states to 3711 states and 5386 transitions. [2022-04-06 19:03:55,078 INFO L78 Accepts]: Start accepts. Automaton has 3711 states and 5386 transitions. Word has length 33 [2022-04-06 19:03:55,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:03:55,079 INFO L478 AbstractCegarLoop]: Abstraction has 3711 states and 5386 transitions. [2022-04-06 19:03:55,079 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) [2022-04-06 19:03:55,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3711 states and 5386 transitions. [2022-04-06 19:03:55,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-04-06 19:03:55,086 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:03:55,086 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] [2022-04-06 19:03:55,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 19:03:55,299 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 [2022-04-06 19:03:55,300 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:03:55,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:03:55,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1905624997, now seen corresponding path program 1 times [2022-04-06 19:03:55,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:03:55,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [436824281] [2022-04-06 19:03:55,303 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:03:55,303 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:03:55,303 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:03:55,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1905624997, now seen corresponding path program 2 times [2022-04-06 19:03:55,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:03:55,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634870485] [2022-04-06 19:03:55,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:03:55,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:03:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:55,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:03:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:55,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:03:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:55,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:03:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:55,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-06 19:03:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:55,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 19:03:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:55,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:03:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:55,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:03:55,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:03:55,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634870485] [2022-04-06 19:03:55,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634870485] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:03:55,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796208921] [2022-04-06 19:03:55,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:03:55,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:03:55,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:03:55,759 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) [2022-04-06 19:03:55,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 19:03:56,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:03:56,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:03:56,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 1479 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-06 19:03:56,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:03:56,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:03:56,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:03:56,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796208921] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:03:56,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:03:56,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-04-06 19:03:56,426 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:03:56,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [436824281] [2022-04-06 19:03:56,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [436824281] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:03:56,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:03:56,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:03:56,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879388604] [2022-04-06 19:03:56,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:03:56,427 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:03:56,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:03:56,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:03:56,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-06 19:03:56,428 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) [2022-04-06 19:03:57,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:03:57,120 INFO L93 Difference]: Finished difference Result 3829 states and 5529 transitions. [2022-04-06 19:03:57,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:03:57,120 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 [2022-04-06 19:03:57,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:03:57,140 INFO L225 Difference]: With dead ends: 3829 [2022-04-06 19:03:57,140 INFO L226 Difference]: Without dead ends: 3810 [2022-04-06 19:03:57,142 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 [2022-04-06 19:03:57,142 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 [2022-04-06 19:03:57,142 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] [2022-04-06 19:03:57,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3810 states. [2022-04-06 19:03:57,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3810 to 3804. [2022-04-06 19:03:57,711 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) [2022-04-06 19:03:57,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 5497 transitions. [2022-04-06 19:03:57,723 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 5497 transitions. Word has length 49 [2022-04-06 19:03:57,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:03:57,723 INFO L478 AbstractCegarLoop]: Abstraction has 3804 states and 5497 transitions. [2022-04-06 19:03:57,723 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) [2022-04-06 19:03:57,723 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 5497 transitions. [2022-04-06 19:03:57,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-04-06 19:03:57,724 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:03:57,724 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] [2022-04-06 19:03:57,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-04-06 19:03:57,939 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 [2022-04-06 19:03:57,939 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:03:57,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:03:57,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1919969906, now seen corresponding path program 1 times [2022-04-06 19:03:57,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:03:57,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1110505637] [2022-04-06 19:03:57,942 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:03:57,943 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:03:57,943 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:03:57,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1919969906, now seen corresponding path program 2 times [2022-04-06 19:03:57,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:03:57,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149122943] [2022-04-06 19:03:57,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:03:57,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:03:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:58,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:03:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:58,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:03:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:58,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:03:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:58,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-06 19:03:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:58,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 19:03:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:58,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:03:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:03:58,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:03:58,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:03:58,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149122943] [2022-04-06 19:03:58,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149122943] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:03:58,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172225368] [2022-04-06 19:03:58,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:03:58,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:03:58,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:03:58,335 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) [2022-04-06 19:03:58,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 19:03:58,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:03:58,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:03:58,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-06 19:03:58,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:03:59,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:03:59,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:03:59,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172225368] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:03:59,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:03:59,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-04-06 19:03:59,045 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:03:59,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1110505637] [2022-04-06 19:03:59,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1110505637] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:03:59,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:03:59,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:03:59,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787011864] [2022-04-06 19:03:59,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:03:59,045 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:03:59,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:03:59,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:03:59,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-06 19:03:59,046 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) [2022-04-06 19:04:00,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:04:00,032 INFO L93 Difference]: Finished difference Result 4627 states and 6683 transitions. [2022-04-06 19:04:00,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:04:00,033 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 [2022-04-06 19:04:00,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:04:00,050 INFO L225 Difference]: With dead ends: 4627 [2022-04-06 19:04:00,051 INFO L226 Difference]: Without dead ends: 4622 [2022-04-06 19:04:00,052 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 [2022-04-06 19:04:00,053 INFO L913 BasicCegarLoop]: 4117 mSDtfsCounter, 1721 mSDsluCounter, 2715 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 19:04:00,053 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1721 Valid, 6832 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 19:04:00,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4622 states. [2022-04-06 19:04:00,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4622 to 4578. [2022-04-06 19:04:00,777 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) [2022-04-06 19:04:00,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 6622 transitions. [2022-04-06 19:04:00,790 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 6622 transitions. Word has length 49 [2022-04-06 19:04:00,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:04:00,790 INFO L478 AbstractCegarLoop]: Abstraction has 4578 states and 6622 transitions. [2022-04-06 19:04:00,791 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) [2022-04-06 19:04:00,791 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 6622 transitions. [2022-04-06 19:04:00,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-06 19:04:00,792 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:04:00,792 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] [2022-04-06 19:04:00,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-06 19:04:01,013 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 [2022-04-06 19:04:01,013 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:04:01,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:04:01,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1061683448, now seen corresponding path program 1 times [2022-04-06 19:04:01,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:01,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2101172307] [2022-04-06 19:04:01,017 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:04:01,017 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:04:01,017 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:04:01,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1061683448, now seen corresponding path program 2 times [2022-04-06 19:04:01,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:04:01,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115832846] [2022-04-06 19:04:01,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:04:01,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:04:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:01,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:04:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:01,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:04:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:01,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:04:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:01,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-06 19:04:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:01,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 19:04:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:01,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:04:01,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:04:01,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115832846] [2022-04-06 19:04:01,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115832846] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:04:01,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031193099] [2022-04-06 19:04:01,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:04:01,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:04:01,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:04:01,431 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) [2022-04-06 19:04:01,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 19:04:02,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:04:02,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:04:02,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-06 19:04:02,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:04:02,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:04:02,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:04:02,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031193099] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:02,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:04:02,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-04-06 19:04:02,164 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:04:02,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2101172307] [2022-04-06 19:04:02,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2101172307] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:02,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:04:02,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 19:04:02,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764089827] [2022-04-06 19:04:02,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:04:02,165 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 19:04:02,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:02,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 19:04:02,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-04-06 19:04:02,166 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) [2022-04-06 19:04:02,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:04:02,986 INFO L93 Difference]: Finished difference Result 4593 states and 6640 transitions. [2022-04-06 19:04:02,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 19:04:02,987 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 [2022-04-06 19:04:02,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:04:03,007 INFO L225 Difference]: With dead ends: 4593 [2022-04-06 19:04:03,007 INFO L226 Difference]: Without dead ends: 4552 [2022-04-06 19:04:03,010 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 [2022-04-06 19:04:03,011 INFO L913 BasicCegarLoop]: 2840 mSDtfsCounter, 5 mSDsluCounter, 8500 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:04:03,011 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 11340 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:04:03,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4552 states. [2022-04-06 19:04:03,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4552 to 4552. [2022-04-06 19:04:03,767 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) [2022-04-06 19:04:03,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4552 states to 4552 states and 6585 transitions. [2022-04-06 19:04:03,780 INFO L78 Accepts]: Start accepts. Automaton has 4552 states and 6585 transitions. Word has length 50 [2022-04-06 19:04:03,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:04:03,780 INFO L478 AbstractCegarLoop]: Abstraction has 4552 states and 6585 transitions. [2022-04-06 19:04:03,781 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) [2022-04-06 19:04:03,781 INFO L276 IsEmpty]: Start isEmpty. Operand 4552 states and 6585 transitions. [2022-04-06 19:04:03,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-06 19:04:03,783 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:04:03,783 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] [2022-04-06 19:04:03,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-06 19:04:03,992 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 [2022-04-06 19:04:03,993 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:04:03,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:04:03,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1755528464, now seen corresponding path program 1 times [2022-04-06 19:04:03,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:03,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [722153878] [2022-04-06 19:04:03,996 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:04:03,996 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:04:03,996 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:04:03,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1755528464, now seen corresponding path program 2 times [2022-04-06 19:04:03,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:04:03,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219854063] [2022-04-06 19:04:03,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:04:03,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:04:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:04,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:04:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:04,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:04:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:04,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:04:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:04,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-06 19:04:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:04,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:04:04,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:04:04,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219854063] [2022-04-06 19:04:04,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219854063] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:04:04,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821954898] [2022-04-06 19:04:04,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:04:04,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:04:04,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:04:04,348 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) [2022-04-06 19:04:04,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-06 19:04:05,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:04:05,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:04:05,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 1578 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 19:04:05,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:04:05,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:04:05,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:04:05,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821954898] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:05,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:04:05,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-04-06 19:04:05,111 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:04:05,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [722153878] [2022-04-06 19:04:05,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [722153878] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:05,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:04:05,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:04:05,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597893730] [2022-04-06 19:04:05,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:04:05,111 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:04:05,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:05,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:04:05,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-06 19:04:05,112 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) [2022-04-06 19:04:05,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:04:05,853 INFO L93 Difference]: Finished difference Result 7500 states and 10838 transitions. [2022-04-06 19:04:05,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:04:05,854 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 [2022-04-06 19:04:05,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:04:05,872 INFO L225 Difference]: With dead ends: 7500 [2022-04-06 19:04:05,873 INFO L226 Difference]: Without dead ends: 4606 [2022-04-06 19:04:05,883 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 [2022-04-06 19:04:05,884 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 [2022-04-06 19:04:05,885 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] [2022-04-06 19:04:05,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4606 states. [2022-04-06 19:04:06,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4606 to 4521. [2022-04-06 19:04:06,685 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) [2022-04-06 19:04:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4521 states to 4521 states and 6531 transitions. [2022-04-06 19:04:06,699 INFO L78 Accepts]: Start accepts. Automaton has 4521 states and 6531 transitions. Word has length 51 [2022-04-06 19:04:06,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:04:06,699 INFO L478 AbstractCegarLoop]: Abstraction has 4521 states and 6531 transitions. [2022-04-06 19:04:06,699 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) [2022-04-06 19:04:06,699 INFO L276 IsEmpty]: Start isEmpty. Operand 4521 states and 6531 transitions. [2022-04-06 19:04:06,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-04-06 19:04:06,700 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:04:06,701 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] [2022-04-06 19:04:06,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-06 19:04:06,922 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 [2022-04-06 19:04:06,922 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:04:06,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:04:06,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1561391810, now seen corresponding path program 1 times [2022-04-06 19:04:06,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:06,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [853706033] [2022-04-06 19:04:06,926 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:04:06,926 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:04:06,926 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:04:06,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1561391810, now seen corresponding path program 2 times [2022-04-06 19:04:06,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:04:06,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079060646] [2022-04-06 19:04:06,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:04:06,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:04:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:07,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:04:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:07,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:04:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:07,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:04:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:07,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-06 19:04:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:07,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:04:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:07,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:07,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:04:07,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:04:07,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079060646] [2022-04-06 19:04:07,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079060646] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:04:07,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079551296] [2022-04-06 19:04:07,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:04:07,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:04:07,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:04:07,296 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) [2022-04-06 19:04:07,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-06 19:04:07,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:04:07,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:04:07,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-06 19:04:07,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:04:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:04:08,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:04:08,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079551296] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:08,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:04:08,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-04-06 19:04:08,078 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:04:08,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [853706033] [2022-04-06 19:04:08,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [853706033] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:08,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:04:08,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 19:04:08,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88149343] [2022-04-06 19:04:08,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:04:08,079 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 19:04:08,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:08,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 19:04:08,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-04-06 19:04:08,079 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) [2022-04-06 19:04:08,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:04:08,897 INFO L93 Difference]: Finished difference Result 4536 states and 6549 transitions. [2022-04-06 19:04:08,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 19:04:08,897 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 [2022-04-06 19:04:08,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:04:08,919 INFO L225 Difference]: With dead ends: 4536 [2022-04-06 19:04:08,919 INFO L226 Difference]: Without dead ends: 4518 [2022-04-06 19:04:08,921 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 [2022-04-06 19:04:08,922 INFO L913 BasicCegarLoop]: 2811 mSDtfsCounter, 5 mSDsluCounter, 8402 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:04:08,922 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 11213 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:04:08,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4518 states. [2022-04-06 19:04:09,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4518 to 4518. [2022-04-06 19:04:09,645 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) [2022-04-06 19:04:09,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4518 states to 4518 states and 6526 transitions. [2022-04-06 19:04:09,657 INFO L78 Accepts]: Start accepts. Automaton has 4518 states and 6526 transitions. Word has length 57 [2022-04-06 19:04:09,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:04:09,657 INFO L478 AbstractCegarLoop]: Abstraction has 4518 states and 6526 transitions. [2022-04-06 19:04:09,657 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) [2022-04-06 19:04:09,657 INFO L276 IsEmpty]: Start isEmpty. Operand 4518 states and 6526 transitions. [2022-04-06 19:04:09,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-06 19:04:09,659 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:04:09,659 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] [2022-04-06 19:04:09,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-06 19:04:09,881 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 [2022-04-06 19:04:09,881 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:04:09,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:04:09,882 INFO L85 PathProgramCache]: Analyzing trace with hash 111621356, now seen corresponding path program 1 times [2022-04-06 19:04:09,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:09,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [812842034] [2022-04-06 19:04:09,884 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:04:09,885 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:04:09,885 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:04:09,885 INFO L85 PathProgramCache]: Analyzing trace with hash 111621356, now seen corresponding path program 2 times [2022-04-06 19:04:09,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:04:09,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540300219] [2022-04-06 19:04:09,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:04:09,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:04:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:10,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:04:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:10,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:04:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:10,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:04:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:10,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-06 19:04:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:10,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:04:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:10,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:10,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:04:10,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:04:10,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540300219] [2022-04-06 19:04:10,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540300219] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:04:10,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436477055] [2022-04-06 19:04:10,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:04:10,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:04:10,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:04:10,224 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) [2022-04-06 19:04:10,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-06 19:04:10,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:04:10,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:04:10,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-06 19:04:10,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:04:11,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:04:11,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:04:11,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436477055] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:11,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:04:11,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-04-06 19:04:11,034 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:04:11,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [812842034] [2022-04-06 19:04:11,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [812842034] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:11,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:04:11,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 19:04:11,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884738968] [2022-04-06 19:04:11,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:04:11,035 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 19:04:11,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:11,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 19:04:11,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-04-06 19:04:11,035 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) [2022-04-06 19:04:11,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:04:11,853 INFO L93 Difference]: Finished difference Result 4533 states and 6544 transitions. [2022-04-06 19:04:11,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 19:04:11,853 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 [2022-04-06 19:04:11,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:04:11,866 INFO L225 Difference]: With dead ends: 4533 [2022-04-06 19:04:11,866 INFO L226 Difference]: Without dead ends: 4509 [2022-04-06 19:04:11,867 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-04-06 19:04:11,868 INFO L913 BasicCegarLoop]: 2806 mSDtfsCounter, 5 mSDsluCounter, 8389 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:04:11,868 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 11195 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:04:11,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4509 states. [2022-04-06 19:04:12,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4509 to 4509. [2022-04-06 19:04:12,597 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) [2022-04-06 19:04:12,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4509 states to 4509 states and 6514 transitions. [2022-04-06 19:04:12,610 INFO L78 Accepts]: Start accepts. Automaton has 4509 states and 6514 transitions. Word has length 54 [2022-04-06 19:04:12,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:04:12,610 INFO L478 AbstractCegarLoop]: Abstraction has 4509 states and 6514 transitions. [2022-04-06 19:04:12,610 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) [2022-04-06 19:04:12,610 INFO L276 IsEmpty]: Start isEmpty. Operand 4509 states and 6514 transitions. [2022-04-06 19:04:12,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-06 19:04:12,612 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:04:12,612 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] [2022-04-06 19:04:12,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-04-06 19:04:12,834 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 [2022-04-06 19:04:12,834 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:04:12,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:04:12,834 INFO L85 PathProgramCache]: Analyzing trace with hash -851908546, now seen corresponding path program 1 times [2022-04-06 19:04:12,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:12,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [27916979] [2022-04-06 19:04:12,838 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:04:12,838 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:04:12,838 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:04:12,838 INFO L85 PathProgramCache]: Analyzing trace with hash -851908546, now seen corresponding path program 2 times [2022-04-06 19:04:12,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:04:12,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618693908] [2022-04-06 19:04:12,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:04:12,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:04:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:13,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:04:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:13,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:04:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:13,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:04:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:13,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-06 19:04:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:13,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:04:13,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:04:13,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618693908] [2022-04-06 19:04:13,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618693908] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:04:13,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271236457] [2022-04-06 19:04:13,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:04:13,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:04:13,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:04:13,155 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) [2022-04-06 19:04:13,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-06 19:04:13,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:04:13,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:04:13,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 19:04:13,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:04:14,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:04:14,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:04:14,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271236457] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:14,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:04:14,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-04-06 19:04:14,042 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:04:14,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [27916979] [2022-04-06 19:04:14,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [27916979] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:14,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:04:14,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:04:14,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643251109] [2022-04-06 19:04:14,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:04:14,043 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:04:14,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:14,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:04:14,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-06 19:04:14,043 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) [2022-04-06 19:04:14,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:04:14,896 INFO L93 Difference]: Finished difference Result 4523 states and 6532 transitions. [2022-04-06 19:04:14,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:04:14,897 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 [2022-04-06 19:04:14,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:04:14,915 INFO L225 Difference]: With dead ends: 4523 [2022-04-06 19:04:14,915 INFO L226 Difference]: Without dead ends: 4520 [2022-04-06 19:04:14,918 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 [2022-04-06 19:04:14,918 INFO L913 BasicCegarLoop]: 2778 mSDtfsCounter, 33 mSDsluCounter, 2713 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-04-06 19:04:14,919 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] [2022-04-06 19:04:14,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4520 states. [2022-04-06 19:04:15,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4520 to 4517. [2022-04-06 19:04:15,655 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) [2022-04-06 19:04:15,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 6526 transitions. [2022-04-06 19:04:15,667 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 6526 transitions. Word has length 51 [2022-04-06 19:04:15,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:04:15,667 INFO L478 AbstractCegarLoop]: Abstraction has 4517 states and 6526 transitions. [2022-04-06 19:04:15,667 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) [2022-04-06 19:04:15,667 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 6526 transitions. [2022-04-06 19:04:15,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 19:04:15,669 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:04:15,669 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] [2022-04-06 19:04:15,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-04-06 19:04:15,887 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 [2022-04-06 19:04:15,887 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:04:15,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:04:15,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1656471014, now seen corresponding path program 1 times [2022-04-06 19:04:15,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:15,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2031035929] [2022-04-06 19:04:15,891 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:04:15,891 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:04:15,891 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:04:15,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1656471014, now seen corresponding path program 2 times [2022-04-06 19:04:15,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:04:15,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995649002] [2022-04-06 19:04:15,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:04:15,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:04:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:16,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:04:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:16,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:04:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:16,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:04:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:16,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:04:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:16,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:04:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:16,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:16,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 19:04:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:16,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:16,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:16,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:04:16,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:04:16,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995649002] [2022-04-06 19:04:16,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995649002] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:04:16,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128584240] [2022-04-06 19:04:16,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:04:16,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:04:16,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:04:16,319 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) [2022-04-06 19:04:16,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-06 19:04:17,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:04:17,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:04:17,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 19:04:17,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:04:17,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:04:17,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:04:17,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128584240] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:17,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:04:17,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-04-06 19:04:17,219 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:04:17,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2031035929] [2022-04-06 19:04:17,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2031035929] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:17,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:04:17,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 19:04:17,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293139283] [2022-04-06 19:04:17,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:04:17,219 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 19:04:17,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:17,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 19:04:17,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-04-06 19:04:17,220 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) [2022-04-06 19:04:17,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:04:17,973 INFO L93 Difference]: Finished difference Result 8386 states and 12110 transitions. [2022-04-06 19:04:17,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 19:04:17,973 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 [2022-04-06 19:04:17,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:04:17,990 INFO L225 Difference]: With dead ends: 8386 [2022-04-06 19:04:17,990 INFO L226 Difference]: Without dead ends: 4521 [2022-04-06 19:04:18,003 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 [2022-04-06 19:04:18,003 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 [2022-04-06 19:04:18,004 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] [2022-04-06 19:04:18,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2022-04-06 19:04:18,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 4521. [2022-04-06 19:04:18,730 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) [2022-04-06 19:04:18,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4521 states to 4521 states and 6531 transitions. [2022-04-06 19:04:18,741 INFO L78 Accepts]: Start accepts. Automaton has 4521 states and 6531 transitions. Word has length 69 [2022-04-06 19:04:18,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:04:18,741 INFO L478 AbstractCegarLoop]: Abstraction has 4521 states and 6531 transitions. [2022-04-06 19:04:18,741 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) [2022-04-06 19:04:18,741 INFO L276 IsEmpty]: Start isEmpty. Operand 4521 states and 6531 transitions. [2022-04-06 19:04:18,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 19:04:18,743 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:04:18,743 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] [2022-04-06 19:04:18,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-04-06 19:04:18,943 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 [2022-04-06 19:04:18,943 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:04:18,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:04:18,944 INFO L85 PathProgramCache]: Analyzing trace with hash 454819355, now seen corresponding path program 1 times [2022-04-06 19:04:18,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:18,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1091519488] [2022-04-06 19:04:18,946 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:04:18,946 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:04:18,946 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:04:18,947 INFO L85 PathProgramCache]: Analyzing trace with hash 454819355, now seen corresponding path program 2 times [2022-04-06 19:04:18,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:04:18,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093818220] [2022-04-06 19:04:18,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:04:18,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:04:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:19,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:04:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:19,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:04:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:19,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:04:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:19,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:04:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:19,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:04:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:19,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:19,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 19:04:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:19,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:19,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:19,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:04:19,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:04:19,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093818220] [2022-04-06 19:04:19,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093818220] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:04:19,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702055708] [2022-04-06 19:04:19,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:04:19,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:04:19,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:04:19,321 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) [2022-04-06 19:04:19,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-04-06 19:04:20,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:04:20,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:04:20,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-06 19:04:20,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:04:20,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:04:20,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:04:20,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702055708] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:20,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:04:20,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-04-06 19:04:20,259 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:04:20,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1091519488] [2022-04-06 19:04:20,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1091519488] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:20,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:04:20,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 19:04:20,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091715668] [2022-04-06 19:04:20,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:04:20,260 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 19:04:20,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:20,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 19:04:20,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-04-06 19:04:20,260 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) [2022-04-06 19:04:21,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:04:21,086 INFO L93 Difference]: Finished difference Result 7729 states and 11118 transitions. [2022-04-06 19:04:21,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 19:04:21,087 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 [2022-04-06 19:04:21,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:04:21,103 INFO L225 Difference]: With dead ends: 7729 [2022-04-06 19:04:21,103 INFO L226 Difference]: Without dead ends: 4396 [2022-04-06 19:04:21,115 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 [2022-04-06 19:04:21,116 INFO L913 BasicCegarLoop]: 2776 mSDtfsCounter, 5 mSDsluCounter, 16617 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 19:04:21,116 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 19393 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 19:04:21,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4396 states. [2022-04-06 19:04:21,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4396 to 4393. [2022-04-06 19:04:21,839 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) [2022-04-06 19:04:21,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4393 states to 4393 states and 6309 transitions. [2022-04-06 19:04:21,850 INFO L78 Accepts]: Start accepts. Automaton has 4393 states and 6309 transitions. Word has length 69 [2022-04-06 19:04:21,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:04:21,851 INFO L478 AbstractCegarLoop]: Abstraction has 4393 states and 6309 transitions. [2022-04-06 19:04:21,851 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) [2022-04-06 19:04:21,851 INFO L276 IsEmpty]: Start isEmpty. Operand 4393 states and 6309 transitions. [2022-04-06 19:04:21,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-06 19:04:21,852 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:04:21,852 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] [2022-04-06 19:04:21,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-04-06 19:04:22,062 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 [2022-04-06 19:04:22,062 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:04:22,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:04:22,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1515186020, now seen corresponding path program 1 times [2022-04-06 19:04:22,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:22,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1166946598] [2022-04-06 19:04:22,065 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:04:22,065 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:04:22,065 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:04:22,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1515186020, now seen corresponding path program 2 times [2022-04-06 19:04:22,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:04:22,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730482472] [2022-04-06 19:04:22,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:04:22,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:04:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:22,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:04:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:22,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:04:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:22,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:04:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:22,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 19:04:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:22,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 19:04:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:22,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:22,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:04:22,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:04:22,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730482472] [2022-04-06 19:04:22,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730482472] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:04:22,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043062067] [2022-04-06 19:04:22,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:04:22,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:04:22,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:04:22,401 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) [2022-04-06 19:04:22,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-04-06 19:04:23,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:04:23,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:04:23,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 19:04:23,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:04:23,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:04:23,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:04:23,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043062067] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:23,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:04:23,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-04-06 19:04:23,255 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:04:23,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1166946598] [2022-04-06 19:04:23,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1166946598] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:23,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:04:23,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 19:04:23,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926633726] [2022-04-06 19:04:23,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:04:23,256 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 19:04:23,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:23,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 19:04:23,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-04-06 19:04:23,257 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) [2022-04-06 19:04:23,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:04:23,971 INFO L93 Difference]: Finished difference Result 4436 states and 6360 transitions. [2022-04-06 19:04:23,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 19:04:23,971 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 [2022-04-06 19:04:23,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:04:23,985 INFO L225 Difference]: With dead ends: 4436 [2022-04-06 19:04:23,986 INFO L226 Difference]: Without dead ends: 4392 [2022-04-06 19:04:23,988 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-04-06 19:04:23,989 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 [2022-04-06 19:04:23,989 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] [2022-04-06 19:04:23,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4392 states. [2022-04-06 19:04:24,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4392 to 4390. [2022-04-06 19:04:24,688 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) [2022-04-06 19:04:24,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4390 states to 4390 states and 6305 transitions. [2022-04-06 19:04:24,698 INFO L78 Accepts]: Start accepts. Automaton has 4390 states and 6305 transitions. Word has length 52 [2022-04-06 19:04:24,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:04:24,698 INFO L478 AbstractCegarLoop]: Abstraction has 4390 states and 6305 transitions. [2022-04-06 19:04:24,698 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) [2022-04-06 19:04:24,698 INFO L276 IsEmpty]: Start isEmpty. Operand 4390 states and 6305 transitions. [2022-04-06 19:04:24,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-06 19:04:24,700 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:04:24,700 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] [2022-04-06 19:04:24,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-04-06 19:04:24,915 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 [2022-04-06 19:04:24,915 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:04:24,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:04:24,916 INFO L85 PathProgramCache]: Analyzing trace with hash 851781494, now seen corresponding path program 1 times [2022-04-06 19:04:24,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:24,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1843804878] [2022-04-06 19:04:24,918 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:04:24,918 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:04:24,918 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:04:24,918 INFO L85 PathProgramCache]: Analyzing trace with hash 851781494, now seen corresponding path program 2 times [2022-04-06 19:04:24,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:04:24,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482275675] [2022-04-06 19:04:24,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:04:24,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:04:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:25,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:04:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:25,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:04:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:25,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:04:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:25,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 19:04:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:25,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 19:04:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:25,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:25,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:25,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:04:25,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:04:25,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482275675] [2022-04-06 19:04:25,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482275675] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:04:25,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892986718] [2022-04-06 19:04:25,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:04:25,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:04:25,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:04:25,240 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) [2022-04-06 19:04:25,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-04-06 19:04:25,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:04:25,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:04:25,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 19:04:25,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:04:26,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:04:26,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:04:26,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892986718] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:26,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:04:26,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-04-06 19:04:26,109 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:04:26,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1843804878] [2022-04-06 19:04:26,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1843804878] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:26,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:04:26,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 19:04:26,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908626426] [2022-04-06 19:04:26,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:04:26,110 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 19:04:26,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:26,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 19:04:26,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-04-06 19:04:26,110 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) [2022-04-06 19:04:27,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:04:27,005 INFO L93 Difference]: Finished difference Result 4408 states and 6326 transitions. [2022-04-06 19:04:27,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 19:04:27,006 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 [2022-04-06 19:04:27,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:04:27,015 INFO L225 Difference]: With dead ends: 4408 [2022-04-06 19:04:27,015 INFO L226 Difference]: Without dead ends: 4388 [2022-04-06 19:04:27,016 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 [2022-04-06 19:04:27,016 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, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 19:04:27,017 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 19433 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 19:04:27,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4388 states. [2022-04-06 19:04:27,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4388 to 4388. [2022-04-06 19:04:27,668 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) [2022-04-06 19:04:27,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 6301 transitions. [2022-04-06 19:04:27,679 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 6301 transitions. Word has length 54 [2022-04-06 19:04:27,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:04:27,679 INFO L478 AbstractCegarLoop]: Abstraction has 4388 states and 6301 transitions. [2022-04-06 19:04:27,679 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) [2022-04-06 19:04:27,679 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 6301 transitions. [2022-04-06 19:04:27,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-06 19:04:27,681 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:04:27,681 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] [2022-04-06 19:04:27,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-04-06 19:04:27,887 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 [2022-04-06 19:04:27,887 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:04:27,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:04:27,888 INFO L85 PathProgramCache]: Analyzing trace with hash 413420634, now seen corresponding path program 1 times [2022-04-06 19:04:27,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:27,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1950754684] [2022-04-06 19:04:27,890 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:04:27,890 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:04:27,890 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:04:27,890 INFO L85 PathProgramCache]: Analyzing trace with hash 413420634, now seen corresponding path program 2 times [2022-04-06 19:04:27,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:04:27,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898270087] [2022-04-06 19:04:27,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:04:27,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:04:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:28,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:04:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:28,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:04:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:28,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:04:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:28,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:04:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:28,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:28,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:04:28,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:04:28,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898270087] [2022-04-06 19:04:28,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898270087] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:04:28,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265388388] [2022-04-06 19:04:28,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:04:28,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:04:28,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:04:28,218 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) [2022-04-06 19:04:28,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-04-06 19:04:28,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:04:28,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:04:28,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 19:04:28,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:04:29,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:04:29,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:04:29,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265388388] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:29,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:04:29,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-04-06 19:04:29,085 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:04:29,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1950754684] [2022-04-06 19:04:29,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1950754684] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:29,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:04:29,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 19:04:29,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931657598] [2022-04-06 19:04:29,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:04:29,086 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 19:04:29,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:29,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 19:04:29,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-04-06 19:04:29,087 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) [2022-04-06 19:04:29,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:04:29,965 INFO L93 Difference]: Finished difference Result 4403 states and 6319 transitions. [2022-04-06 19:04:29,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 19:04:29,965 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 [2022-04-06 19:04:29,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:04:29,977 INFO L225 Difference]: With dead ends: 4403 [2022-04-06 19:04:29,977 INFO L226 Difference]: Without dead ends: 4382 [2022-04-06 19:04:29,979 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-04-06 19:04:29,979 INFO L913 BasicCegarLoop]: 2768 mSDtfsCounter, 18 mSDsluCounter, 16572 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-04-06 19:04:29,979 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] [2022-04-06 19:04:29,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2022-04-06 19:04:30,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 4382. [2022-04-06 19:04:30,693 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) [2022-04-06 19:04:30,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 6292 transitions. [2022-04-06 19:04:30,705 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 6292 transitions. Word has length 53 [2022-04-06 19:04:30,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:04:30,705 INFO L478 AbstractCegarLoop]: Abstraction has 4382 states and 6292 transitions. [2022-04-06 19:04:30,706 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) [2022-04-06 19:04:30,706 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 6292 transitions. [2022-04-06 19:04:30,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-06 19:04:30,707 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:04:30,707 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] [2022-04-06 19:04:30,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-04-06 19:04:30,908 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 [2022-04-06 19:04:30,908 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:04:30,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:04:30,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1241941963, now seen corresponding path program 1 times [2022-04-06 19:04:30,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:30,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [584874555] [2022-04-06 19:04:30,911 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:04:30,911 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:04:30,911 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:04:30,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1241941963, now seen corresponding path program 2 times [2022-04-06 19:04:30,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:04:30,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79596640] [2022-04-06 19:04:30,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:04:30,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:04:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:31,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:04:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:31,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:04:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:31,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:04:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:31,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:04:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:31,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:31,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:04:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:31,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:31,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:04:31,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:04:31,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79596640] [2022-04-06 19:04:31,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79596640] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:04:31,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437711104] [2022-04-06 19:04:31,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:04:31,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:04:31,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:04:31,305 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) [2022-04-06 19:04:31,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-04-06 19:04:32,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:04:32,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:04:32,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 1682 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 19:04:32,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:04:32,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:04:32,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:04:32,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437711104] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:32,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:04:32,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-04-06 19:04:32,221 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:04:32,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [584874555] [2022-04-06 19:04:32,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [584874555] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:32,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:04:32,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 19:04:32,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012631297] [2022-04-06 19:04:32,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:04:32,222 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 19:04:32,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:32,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 19:04:32,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-04-06 19:04:32,223 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) [2022-04-06 19:04:33,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:04:33,001 INFO L93 Difference]: Finished difference Result 4427 states and 6345 transitions. [2022-04-06 19:04:33,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 19:04:33,002 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 [2022-04-06 19:04:33,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:04:33,026 INFO L225 Difference]: With dead ends: 4427 [2022-04-06 19:04:33,027 INFO L226 Difference]: Without dead ends: 4382 [2022-04-06 19:04:33,028 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 [2022-04-06 19:04:33,028 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, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 19:04:33,028 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 13770 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 19:04:33,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2022-04-06 19:04:33,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 4382. [2022-04-06 19:04:33,681 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) [2022-04-06 19:04:33,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 6291 transitions. [2022-04-06 19:04:33,693 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 6291 transitions. Word has length 60 [2022-04-06 19:04:33,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:04:33,694 INFO L478 AbstractCegarLoop]: Abstraction has 4382 states and 6291 transitions. [2022-04-06 19:04:33,694 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) [2022-04-06 19:04:33,694 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 6291 transitions. [2022-04-06 19:04:33,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-04-06 19:04:33,695 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:04:33,696 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] [2022-04-06 19:04:33,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-04-06 19:04:33,896 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 [2022-04-06 19:04:33,896 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:04:33,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:04:33,896 INFO L85 PathProgramCache]: Analyzing trace with hash 2054843116, now seen corresponding path program 1 times [2022-04-06 19:04:33,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:33,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [254134740] [2022-04-06 19:04:33,899 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:04:33,899 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:04:33,899 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:04:33,899 INFO L85 PathProgramCache]: Analyzing trace with hash 2054843116, now seen corresponding path program 2 times [2022-04-06 19:04:33,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:04:33,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670658579] [2022-04-06 19:04:33,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:04:33,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:04:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:34,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:04:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:34,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:04:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:34,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:04:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:34,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:04:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:34,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:04:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:34,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:34,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:34,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-06 19:04:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:34,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:34,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:04:34,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:04:34,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670658579] [2022-04-06 19:04:34,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670658579] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:04:34,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653519106] [2022-04-06 19:04:34,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:04:34,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:04:34,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:04:34,223 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) [2022-04-06 19:04:34,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-04-06 19:04:35,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:04:35,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:04:35,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 1931 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-06 19:04:35,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:04:35,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:04:35,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:04:35,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653519106] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:35,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:04:35,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-04-06 19:04:35,168 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:04:35,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [254134740] [2022-04-06 19:04:35,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [254134740] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:35,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:04:35,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:04:35,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957364194] [2022-04-06 19:04:35,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:04:35,168 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:04:35,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:35,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:04:35,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-06 19:04:35,169 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) [2022-04-06 19:04:36,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:04:36,262 INFO L93 Difference]: Finished difference Result 7277 states and 10413 transitions. [2022-04-06 19:04:36,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:04:36,263 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 [2022-04-06 19:04:36,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:04:36,287 INFO L225 Difference]: With dead ends: 7277 [2022-04-06 19:04:36,288 INFO L226 Difference]: Without dead ends: 6964 [2022-04-06 19:04:36,293 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 [2022-04-06 19:04:36,294 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 [2022-04-06 19:04:36,294 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] [2022-04-06 19:04:36,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6964 states. [2022-04-06 19:04:37,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6964 to 6826. [2022-04-06 19:04:37,513 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) [2022-04-06 19:04:37,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6826 states to 6826 states and 9870 transitions. [2022-04-06 19:04:37,598 INFO L78 Accepts]: Start accepts. Automaton has 6826 states and 9870 transitions. Word has length 72 [2022-04-06 19:04:37,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:04:37,598 INFO L478 AbstractCegarLoop]: Abstraction has 6826 states and 9870 transitions. [2022-04-06 19:04:37,598 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) [2022-04-06 19:04:37,598 INFO L276 IsEmpty]: Start isEmpty. Operand 6826 states and 9870 transitions. [2022-04-06 19:04:37,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-06 19:04:37,609 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:04:37,609 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] [2022-04-06 19:04:37,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-04-06 19:04:37,823 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 [2022-04-06 19:04:37,823 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:04:37,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:04:37,824 INFO L85 PathProgramCache]: Analyzing trace with hash 898925172, now seen corresponding path program 1 times [2022-04-06 19:04:37,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:37,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1971729929] [2022-04-06 19:04:37,826 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:04:37,826 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:04:37,826 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:04:37,826 INFO L85 PathProgramCache]: Analyzing trace with hash 898925172, now seen corresponding path program 2 times [2022-04-06 19:04:37,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:04:37,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302744780] [2022-04-06 19:04:37,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:04:37,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:04:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:38,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:04:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:38,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:04:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:38,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:04:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:38,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:04:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:38,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:04:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:38,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:38,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:04:38,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:04:38,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302744780] [2022-04-06 19:04:38,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302744780] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:04:38,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347617551] [2022-04-06 19:04:38,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:04:38,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:04:38,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:04:38,170 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) [2022-04-06 19:04:38,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-04-06 19:04:38,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:04:38,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:04:38,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 1620 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 19:04:38,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:04:39,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:04:39,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:04:39,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347617551] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:39,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:04:39,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-04-06 19:04:39,100 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:04:39,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1971729929] [2022-04-06 19:04:39,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1971729929] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:39,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:04:39,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 19:04:39,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083301186] [2022-04-06 19:04:39,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:04:39,100 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 19:04:39,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:39,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 19:04:39,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-04-06 19:04:39,101 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) [2022-04-06 19:04:40,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:04:40,316 INFO L93 Difference]: Finished difference Result 6967 states and 10051 transitions. [2022-04-06 19:04:40,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 19:04:40,316 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 [2022-04-06 19:04:40,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:04:40,332 INFO L225 Difference]: With dead ends: 6967 [2022-04-06 19:04:40,333 INFO L226 Difference]: Without dead ends: 6855 [2022-04-06 19:04:40,335 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-04-06 19:04:40,335 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 [2022-04-06 19:04:40,335 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] [2022-04-06 19:04:40,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6855 states. [2022-04-06 19:04:41,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6855 to 6828. [2022-04-06 19:04:41,498 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) [2022-04-06 19:04:41,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6828 states to 6828 states and 9871 transitions. [2022-04-06 19:04:41,515 INFO L78 Accepts]: Start accepts. Automaton has 6828 states and 9871 transitions. Word has length 60 [2022-04-06 19:04:41,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:04:41,516 INFO L478 AbstractCegarLoop]: Abstraction has 6828 states and 9871 transitions. [2022-04-06 19:04:41,516 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) [2022-04-06 19:04:41,516 INFO L276 IsEmpty]: Start isEmpty. Operand 6828 states and 9871 transitions. [2022-04-06 19:04:41,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-06 19:04:41,517 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:04:41,517 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] [2022-04-06 19:04:41,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-04-06 19:04:41,739 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 [2022-04-06 19:04:41,740 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:04:41,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:04:41,740 INFO L85 PathProgramCache]: Analyzing trace with hash 696011681, now seen corresponding path program 1 times [2022-04-06 19:04:41,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:41,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [774737095] [2022-04-06 19:04:41,742 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:04:41,742 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:04:41,742 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:04:41,742 INFO L85 PathProgramCache]: Analyzing trace with hash 696011681, now seen corresponding path program 2 times [2022-04-06 19:04:41,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:04:41,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407675594] [2022-04-06 19:04:41,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:04:41,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:04:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:41,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:04:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:42,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:04:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:42,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:04:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:42,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:04:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:42,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:42,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:42,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 19:04:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:42,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:42,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:04:42,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:04:42,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407675594] [2022-04-06 19:04:42,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407675594] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:04:42,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9443197] [2022-04-06 19:04:42,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:04:42,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:04:42,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:04:42,180 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) [2022-04-06 19:04:42,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-04-06 19:04:43,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:04:43,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:04:43,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 1601 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-06 19:04:43,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:04:43,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:04:43,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:04:43,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9443197] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:43,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:04:43,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2022-04-06 19:04:43,137 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:04:43,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [774737095] [2022-04-06 19:04:43,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [774737095] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:43,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:04:43,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 19:04:43,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898588302] [2022-04-06 19:04:43,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:04:43,138 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 19:04:43,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:43,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 19:04:43,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-04-06 19:04:43,138 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) [2022-04-06 19:04:44,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:04:44,301 INFO L93 Difference]: Finished difference Result 6884 states and 9934 transitions. [2022-04-06 19:04:44,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 19:04:44,302 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 [2022-04-06 19:04:44,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:04:44,322 INFO L225 Difference]: With dead ends: 6884 [2022-04-06 19:04:44,322 INFO L226 Difference]: Without dead ends: 6835 [2022-04-06 19:04:44,326 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-04-06 19:04:44,327 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 [2022-04-06 19:04:44,327 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] [2022-04-06 19:04:44,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6835 states. [2022-04-06 19:04:45,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6835 to 6833. [2022-04-06 19:04:45,461 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) [2022-04-06 19:04:45,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6833 states to 6833 states and 9876 transitions. [2022-04-06 19:04:45,481 INFO L78 Accepts]: Start accepts. Automaton has 6833 states and 9876 transitions. Word has length 63 [2022-04-06 19:04:45,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:04:45,481 INFO L478 AbstractCegarLoop]: Abstraction has 6833 states and 9876 transitions. [2022-04-06 19:04:45,481 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) [2022-04-06 19:04:45,481 INFO L276 IsEmpty]: Start isEmpty. Operand 6833 states and 9876 transitions. [2022-04-06 19:04:45,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-06 19:04:45,483 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:04:45,483 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] [2022-04-06 19:04:45,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-04-06 19:04:45,683 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 [2022-04-06 19:04:45,683 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:04:45,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:04:45,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1314092160, now seen corresponding path program 1 times [2022-04-06 19:04:45,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:45,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1858563554] [2022-04-06 19:04:45,686 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:04:45,686 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:04:45,686 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:04:45,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1314092160, now seen corresponding path program 2 times [2022-04-06 19:04:45,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:04:45,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572478363] [2022-04-06 19:04:45,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:04:45,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:04:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:45,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:04:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:45,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:04:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:45,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:04:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:45,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:04:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:45,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:46,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:46,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 19:04:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:46,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:46,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:04:46,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:04:46,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572478363] [2022-04-06 19:04:46,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572478363] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:04:46,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143018107] [2022-04-06 19:04:46,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:04:46,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:04:46,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:04:46,026 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) [2022-04-06 19:04:46,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-04-06 19:04:46,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:04:46,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:04:46,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 1602 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-06 19:04:46,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:04:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:04:47,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:04:47,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143018107] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:47,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:04:47,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2022-04-06 19:04:47,106 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:04:47,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1858563554] [2022-04-06 19:04:47,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1858563554] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:47,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:04:47,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 19:04:47,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357120831] [2022-04-06 19:04:47,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:04:47,107 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 19:04:47,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:47,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 19:04:47,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-04-06 19:04:47,107 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) [2022-04-06 19:04:48,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:04:48,432 INFO L93 Difference]: Finished difference Result 7125 states and 10235 transitions. [2022-04-06 19:04:48,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 19:04:48,433 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 [2022-04-06 19:04:48,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:04:48,454 INFO L225 Difference]: With dead ends: 7125 [2022-04-06 19:04:48,454 INFO L226 Difference]: Without dead ends: 6826 [2022-04-06 19:04:48,456 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-04-06 19:04:48,457 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, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:04:48,457 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 24964 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:04:48,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6826 states. [2022-04-06 19:04:49,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6826 to 6826. [2022-04-06 19:04:49,617 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) [2022-04-06 19:04:49,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6826 states to 6826 states and 9866 transitions. [2022-04-06 19:04:49,632 INFO L78 Accepts]: Start accepts. Automaton has 6826 states and 9866 transitions. Word has length 63 [2022-04-06 19:04:49,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:04:49,632 INFO L478 AbstractCegarLoop]: Abstraction has 6826 states and 9866 transitions. [2022-04-06 19:04:49,632 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) [2022-04-06 19:04:49,632 INFO L276 IsEmpty]: Start isEmpty. Operand 6826 states and 9866 transitions. [2022-04-06 19:04:49,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-06 19:04:49,633 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:04:49,634 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] [2022-04-06 19:04:49,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-04-06 19:04:49,837 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 [2022-04-06 19:04:49,837 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:04:49,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:04:49,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1827694763, now seen corresponding path program 1 times [2022-04-06 19:04:49,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:49,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [417206346] [2022-04-06 19:04:49,840 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:04:49,840 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:04:49,840 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:04:49,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1827694763, now seen corresponding path program 2 times [2022-04-06 19:04:49,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:04:49,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162852263] [2022-04-06 19:04:49,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:04:49,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:04:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:50,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:04:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:50,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:04:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:50,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:04:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:50,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:04:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:50,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:04:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:50,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:50,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:04:50,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:04:50,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162852263] [2022-04-06 19:04:50,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162852263] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:04:50,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712127900] [2022-04-06 19:04:50,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:04:50,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:04:50,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:04:50,217 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) [2022-04-06 19:04:50,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-04-06 19:04:51,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:04:51,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:04:51,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 1623 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 19:04:51,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:04:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:04:51,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:04:51,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712127900] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:51,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:04:51,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-04-06 19:04:51,239 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:04:51,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [417206346] [2022-04-06 19:04:51,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [417206346] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:51,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:04:51,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 19:04:51,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069935009] [2022-04-06 19:04:51,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:04:51,240 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 19:04:51,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:51,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 19:04:51,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-04-06 19:04:51,240 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) [2022-04-06 19:04:52,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:04:52,515 INFO L93 Difference]: Finished difference Result 6844 states and 9887 transitions. [2022-04-06 19:04:52,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 19:04:52,516 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 [2022-04-06 19:04:52,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:04:52,536 INFO L225 Difference]: With dead ends: 6844 [2022-04-06 19:04:52,537 INFO L226 Difference]: Without dead ends: 6824 [2022-04-06 19:04:52,539 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 [2022-04-06 19:04:52,540 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 [2022-04-06 19:04:52,540 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] [2022-04-06 19:04:52,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6824 states. [2022-04-06 19:04:53,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6824 to 6824. [2022-04-06 19:04:53,806 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) [2022-04-06 19:04:53,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6824 states to 6824 states and 9862 transitions. [2022-04-06 19:04:53,826 INFO L78 Accepts]: Start accepts. Automaton has 6824 states and 9862 transitions. Word has length 62 [2022-04-06 19:04:53,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:04:53,826 INFO L478 AbstractCegarLoop]: Abstraction has 6824 states and 9862 transitions. [2022-04-06 19:04:53,826 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) [2022-04-06 19:04:53,826 INFO L276 IsEmpty]: Start isEmpty. Operand 6824 states and 9862 transitions. [2022-04-06 19:04:53,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-04-06 19:04:53,829 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:04:53,829 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] [2022-04-06 19:04:53,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-04-06 19:04:54,051 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 [2022-04-06 19:04:54,051 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:04:54,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:04:54,052 INFO L85 PathProgramCache]: Analyzing trace with hash 502563313, now seen corresponding path program 1 times [2022-04-06 19:04:54,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:54,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1878536661] [2022-04-06 19:04:54,057 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:04:54,058 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:04:54,058 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:04:54,058 INFO L85 PathProgramCache]: Analyzing trace with hash 502563313, now seen corresponding path program 2 times [2022-04-06 19:04:54,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:04:54,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173727193] [2022-04-06 19:04:54,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:04:54,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:04:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:54,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:04:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:54,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:04:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:54,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:04:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:54,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:04:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:54,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:54,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 19:04:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:54,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:04:54,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:04:54,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173727193] [2022-04-06 19:04:54,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173727193] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:04:54,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466371742] [2022-04-06 19:04:54,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:04:54,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:04:54,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:04:54,365 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) [2022-04-06 19:04:54,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-04-06 19:04:55,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:04:55,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:04:55,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 1609 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-06 19:04:55,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:04:55,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:04:55,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:04:55,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466371742] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:55,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:04:55,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-04-06 19:04:55,315 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:04:55,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1878536661] [2022-04-06 19:04:55,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1878536661] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:55,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:04:55,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:04:55,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744368992] [2022-04-06 19:04:55,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:04:55,316 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:04:55,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:55,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:04:55,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-04-06 19:04:55,316 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) [2022-04-06 19:04:56,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:04:56,743 INFO L93 Difference]: Finished difference Result 8195 states and 11832 transitions. [2022-04-06 19:04:56,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:04:56,743 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 [2022-04-06 19:04:56,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:04:56,765 INFO L225 Difference]: With dead ends: 8195 [2022-04-06 19:04:56,765 INFO L226 Difference]: Without dead ends: 8187 [2022-04-06 19:04:56,769 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 [2022-04-06 19:04:56,769 INFO L913 BasicCegarLoop]: 4476 mSDtfsCounter, 1928 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:04:56,769 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1928 Valid, 7176 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:04:56,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8187 states. [2022-04-06 19:04:57,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8187 to 6951. [2022-04-06 19:04:57,987 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) [2022-04-06 19:04:58,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6951 states to 6951 states and 10008 transitions. [2022-04-06 19:04:58,006 INFO L78 Accepts]: Start accepts. Automaton has 6951 states and 10008 transitions. Word has length 65 [2022-04-06 19:04:58,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:04:58,007 INFO L478 AbstractCegarLoop]: Abstraction has 6951 states and 10008 transitions. [2022-04-06 19:04:58,007 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) [2022-04-06 19:04:58,007 INFO L276 IsEmpty]: Start isEmpty. Operand 6951 states and 10008 transitions. [2022-04-06 19:04:58,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-06 19:04:58,009 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:04:58,009 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] [2022-04-06 19:04:58,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-04-06 19:04:58,222 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 [2022-04-06 19:04:58,222 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:04:58,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:04:58,222 INFO L85 PathProgramCache]: Analyzing trace with hash 118946246, now seen corresponding path program 1 times [2022-04-06 19:04:58,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:58,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1618532109] [2022-04-06 19:04:58,225 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:04:58,225 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:04:58,225 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:04:58,225 INFO L85 PathProgramCache]: Analyzing trace with hash 118946246, now seen corresponding path program 2 times [2022-04-06 19:04:58,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:04:58,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789555297] [2022-04-06 19:04:58,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:04:58,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:04:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:58,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:04:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:58,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:04:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:58,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:04:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:58,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:04:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:58,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:04:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:58,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:04:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:04:58,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:04:58,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:04:58,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789555297] [2022-04-06 19:04:58,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789555297] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:04:58,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049784907] [2022-04-06 19:04:58,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:04:58,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:04:58,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:04:58,572 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) [2022-04-06 19:04:58,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-04-06 19:04:59,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:04:59,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:04:59,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-06 19:04:59,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:04:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:04:59,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:04:59,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049784907] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:59,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:04:59,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2022-04-06 19:04:59,636 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:04:59,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1618532109] [2022-04-06 19:04:59,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1618532109] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:04:59,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:04:59,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:04:59,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413452790] [2022-04-06 19:04:59,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:04:59,636 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:04:59,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:04:59,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:04:59,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-04-06 19:04:59,637 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) [2022-04-06 19:05:01,528 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:05:03,559 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:05:04,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:05:04,824 INFO L93 Difference]: Finished difference Result 7057 states and 10147 transitions. [2022-04-06 19:05:04,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:05:04,825 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 [2022-04-06 19:05:04,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:05:04,842 INFO L225 Difference]: With dead ends: 7057 [2022-04-06 19:05:04,842 INFO L226 Difference]: Without dead ends: 6978 [2022-04-06 19:05:04,845 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 [2022-04-06 19:05:04,846 INFO L913 BasicCegarLoop]: 2757 mSDtfsCounter, 9 mSDsluCounter, 2701 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s 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, 4.0s IncrementalHoareTripleChecker+Time [2022-04-06 19:05:04,846 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 5458 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 39 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-04-06 19:05:04,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6978 states. [2022-04-06 19:05:06,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6978 to 6957. [2022-04-06 19:05:06,078 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) [2022-04-06 19:05:06,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6957 states to 6957 states and 10018 transitions. [2022-04-06 19:05:06,096 INFO L78 Accepts]: Start accepts. Automaton has 6957 states and 10018 transitions. Word has length 68 [2022-04-06 19:05:06,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:05:06,096 INFO L478 AbstractCegarLoop]: Abstraction has 6957 states and 10018 transitions. [2022-04-06 19:05:06,096 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) [2022-04-06 19:05:06,097 INFO L276 IsEmpty]: Start isEmpty. Operand 6957 states and 10018 transitions. [2022-04-06 19:05:06,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-06 19:05:06,099 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:05:06,099 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] [2022-04-06 19:05:06,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-04-06 19:05:06,304 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 [2022-04-06 19:05:06,304 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:05:06,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:05:06,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1475878482, now seen corresponding path program 1 times [2022-04-06 19:05:06,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:05:06,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1660772771] [2022-04-06 19:05:06,307 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:05:06,307 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:05:06,307 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:05:06,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1475878482, now seen corresponding path program 2 times [2022-04-06 19:05:06,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:05:06,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364728282] [2022-04-06 19:05:06,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:05:06,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:05:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:06,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:05:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:06,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:05:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:06,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:05:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:06,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 19:05:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:06,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 19:05:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:06,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:05:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:06,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 19:05:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:06,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:05:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:06,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:05:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:06,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:05:06,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:05:06,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364728282] [2022-04-06 19:05:06,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364728282] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:05:06,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900612628] [2022-04-06 19:05:06,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:05:06,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:05:06,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:05:06,700 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) [2022-04-06 19:05:06,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-04-06 19:05:07,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:05:07,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:05:07,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-06 19:05:07,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:05:07,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:05:07,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:05:07,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900612628] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:05:07,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:05:07,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2022-04-06 19:05:07,848 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:05:07,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1660772771] [2022-04-06 19:05:07,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1660772771] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:05:07,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:05:07,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 19:05:07,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439616494] [2022-04-06 19:05:07,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:05:07,848 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 19:05:07,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:05:07,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 19:05:07,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-04-06 19:05:07,849 INFO L87 Difference]: Start difference. First operand 6957 states and 10018 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) [2022-04-06 19:05:09,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:05:09,188 INFO L93 Difference]: Finished difference Result 7028 states and 10098 transitions. [2022-04-06 19:05:09,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 19:05:09,189 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 [2022-04-06 19:05:09,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:05:09,209 INFO L225 Difference]: With dead ends: 7028 [2022-04-06 19:05:09,210 INFO L226 Difference]: Without dead ends: 6947 [2022-04-06 19:05:09,214 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 [2022-04-06 19:05:09,215 INFO L913 BasicCegarLoop]: 2769 mSDtfsCounter, 9 mSDsluCounter, 24861 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 27630 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:05:09,215 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 27630 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:05:09,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6947 states. [2022-04-06 19:05:10,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6947 to 6947. [2022-04-06 19:05:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6947 states, 4607 states have (on average 1.3520729324940308) internal successors, (6229), 4712 states have internal predecessors, (6229), 1857 states have call successors, (1857), 446 states have call predecessors, (1857), 482 states have return successors, (1918), 1863 states have call predecessors, (1918), 1846 states have call successors, (1918) [2022-04-06 19:05:10,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6947 states to 6947 states and 10004 transitions. [2022-04-06 19:05:10,494 INFO L78 Accepts]: Start accepts. Automaton has 6947 states and 10004 transitions. Word has length 68 [2022-04-06 19:05:10,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:05:10,494 INFO L478 AbstractCegarLoop]: Abstraction has 6947 states and 10004 transitions. [2022-04-06 19:05:10,495 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) [2022-04-06 19:05:10,495 INFO L276 IsEmpty]: Start isEmpty. Operand 6947 states and 10004 transitions. [2022-04-06 19:05:10,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-04-06 19:05:10,497 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:05:10,498 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] [2022-04-06 19:05:10,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-04-06 19:05:10,703 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 [2022-04-06 19:05:10,704 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:05:10,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:05:10,704 INFO L85 PathProgramCache]: Analyzing trace with hash -774797162, now seen corresponding path program 1 times [2022-04-06 19:05:10,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:05:10,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2003961476] [2022-04-06 19:05:10,706 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:05:10,707 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:05:10,707 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:05:10,707 INFO L85 PathProgramCache]: Analyzing trace with hash -774797162, now seen corresponding path program 2 times [2022-04-06 19:05:10,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:05:10,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262014242] [2022-04-06 19:05:10,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:05:10,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:05:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:10,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:05:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:10,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:05:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:10,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:05:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:11,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:05:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:11,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:05:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:11,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:05:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:11,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 19:05:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:11,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:05:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:11,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:05:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:11,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:05:11,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:05:11,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262014242] [2022-04-06 19:05:11,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262014242] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:05:11,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867719781] [2022-04-06 19:05:11,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:05:11,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:05:11,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:05:11,109 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) [2022-04-06 19:05:11,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-04-06 19:05:12,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:05:12,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:05:12,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-06 19:05:12,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:05:12,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:05:12,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:05:12,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867719781] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:05:12,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:05:12,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-04-06 19:05:12,219 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:05:12,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2003961476] [2022-04-06 19:05:12,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2003961476] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:05:12,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:05:12,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 19:05:12,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461281329] [2022-04-06 19:05:12,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:05:12,220 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 19:05:12,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:05:12,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 19:05:12,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-04-06 19:05:12,220 INFO L87 Difference]: Start difference. First operand 6947 states and 10004 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) [2022-04-06 19:05:13,591 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:05:15,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:05:16,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:05:16,871 INFO L93 Difference]: Finished difference Result 7078 states and 10158 transitions. [2022-04-06 19:05:16,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 19:05:16,872 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 [2022-04-06 19:05:16,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:05:16,888 INFO L225 Difference]: With dead ends: 7078 [2022-04-06 19:05:16,888 INFO L226 Difference]: Without dead ends: 6040 [2022-04-06 19:05:16,893 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 [2022-04-06 19:05:16,895 INFO L913 BasicCegarLoop]: 2775 mSDtfsCounter, 17 mSDsluCounter, 24860 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 27635 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-04-06 19:05:16,896 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 27635 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 185 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-04-06 19:05:16,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6040 states. [2022-04-06 19:05:18,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6040 to 6005. [2022-04-06 19:05:18,062 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) [2022-04-06 19:05:18,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6005 states to 6005 states and 8596 transitions. [2022-04-06 19:05:18,078 INFO L78 Accepts]: Start accepts. Automaton has 6005 states and 8596 transitions. Word has length 76 [2022-04-06 19:05:18,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:05:18,079 INFO L478 AbstractCegarLoop]: Abstraction has 6005 states and 8596 transitions. [2022-04-06 19:05:18,079 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) [2022-04-06 19:05:18,079 INFO L276 IsEmpty]: Start isEmpty. Operand 6005 states and 8596 transitions. [2022-04-06 19:05:18,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-06 19:05:18,080 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:05:18,081 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] [2022-04-06 19:05:18,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-04-06 19:05:18,281 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 [2022-04-06 19:05:18,281 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:05:18,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:05:18,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1149198091, now seen corresponding path program 1 times [2022-04-06 19:05:18,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:05:18,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1803845738] [2022-04-06 19:05:18,284 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:05:18,284 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:05:18,284 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:05:18,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1149198091, now seen corresponding path program 2 times [2022-04-06 19:05:18,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:05:18,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385655221] [2022-04-06 19:05:18,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:05:18,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:05:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:18,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:05:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:18,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:05:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:18,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:05:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:18,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:05:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:18,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:05:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:18,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 19:05:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:18,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:05:18,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:05:18,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385655221] [2022-04-06 19:05:18,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385655221] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:05:18,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075625338] [2022-04-06 19:05:18,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:05:18,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:05:18,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:05:18,648 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) [2022-04-06 19:05:18,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-04-06 19:05:19,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:05:19,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:05:19,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-06 19:05:19,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:05:19,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:05:19,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:05:19,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075625338] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:05:19,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:05:19,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-04-06 19:05:19,847 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:05:19,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1803845738] [2022-04-06 19:05:19,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1803845738] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:05:19,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:05:19,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 19:05:19,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432220746] [2022-04-06 19:05:19,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:05:19,847 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 19:05:19,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:05:19,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 19:05:19,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-04-06 19:05:19,848 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) [2022-04-06 19:05:25,061 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:05:29,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:05:29,807 INFO L93 Difference]: Finished difference Result 6386 states and 9116 transitions. [2022-04-06 19:05:29,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 19:05:29,808 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 [2022-04-06 19:05:29,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:05:29,823 INFO L225 Difference]: With dead ends: 6386 [2022-04-06 19:05:29,823 INFO L226 Difference]: Without dead ends: 6267 [2022-04-06 19:05:29,825 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 [2022-04-06 19:05:29,826 INFO L913 BasicCegarLoop]: 2351 mSDtfsCounter, 3388 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 5158 mSolverCounterSat, 1483 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3823 SdHoareTripleChecker+Valid, 3521 SdHoareTripleChecker+Invalid, 6642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1483 IncrementalHoareTripleChecker+Valid, 5158 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-04-06 19:05:29,826 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3823 Valid, 3521 Invalid, 6642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1483 Valid, 5158 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2022-04-06 19:05:29,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6267 states. [2022-04-06 19:05:31,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6267 to 6182. [2022-04-06 19:05:31,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6182 states, 4165 states have (on average 1.3541416566626652) internal successors, (5640), 4266 states have internal predecessors, (5640), 1588 states have call successors, (1588), 404 states have call predecessors, (1588), 428 states have return successors, (1622), 1574 states have call predecessors, (1622), 1577 states have call successors, (1622) [2022-04-06 19:05:31,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6182 states to 6182 states and 8850 transitions. [2022-04-06 19:05:31,219 INFO L78 Accepts]: Start accepts. Automaton has 6182 states and 8850 transitions. Word has length 66 [2022-04-06 19:05:31,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:05:31,220 INFO L478 AbstractCegarLoop]: Abstraction has 6182 states and 8850 transitions. [2022-04-06 19:05:31,220 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) [2022-04-06 19:05:31,220 INFO L276 IsEmpty]: Start isEmpty. Operand 6182 states and 8850 transitions. [2022-04-06 19:05:31,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 19:05:31,221 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:05:31,222 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] [2022-04-06 19:05:31,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-04-06 19:05:31,422 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 [2022-04-06 19:05:31,422 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:05:31,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:05:31,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1417992752, now seen corresponding path program 1 times [2022-04-06 19:05:31,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:05:31,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [211862988] [2022-04-06 19:05:31,425 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:05:31,425 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:05:31,425 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:05:31,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1417992752, now seen corresponding path program 2 times [2022-04-06 19:05:31,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:05:31,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753669802] [2022-04-06 19:05:31,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:05:31,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:05:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:31,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:05:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:31,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:05:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:31,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:05:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:31,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:05:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:31,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:05:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:31,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:05:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:31,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:05:31,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:05:31,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753669802] [2022-04-06 19:05:31,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753669802] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:05:31,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25983410] [2022-04-06 19:05:31,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:05:31,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:05:31,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:05:31,780 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) [2022-04-06 19:05:31,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-04-06 19:05:32,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:05:32,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:05:32,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 1817 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-06 19:05:32,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:05:32,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:05:32,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:05:32,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25983410] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:05:32,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:05:32,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-04-06 19:05:32,846 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:05:32,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [211862988] [2022-04-06 19:05:32,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [211862988] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:05:32,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:05:32,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:05:32,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046029180] [2022-04-06 19:05:32,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:05:32,846 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:05:32,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:05:32,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:05:32,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-06 19:05:32,847 INFO L87 Difference]: Start difference. First operand 6182 states and 8850 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) [2022-04-06 19:05:34,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:05:34,164 INFO L93 Difference]: Finished difference Result 6239 states and 8921 transitions. [2022-04-06 19:05:34,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:05:34,164 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 [2022-04-06 19:05:34,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:05:34,182 INFO L225 Difference]: With dead ends: 6239 [2022-04-06 19:05:34,182 INFO L226 Difference]: Without dead ends: 6194 [2022-04-06 19:05:34,185 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-06 19:05:34,186 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, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:05:34,186 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 5424 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:05:34,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6194 states. [2022-04-06 19:05:35,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6194 to 6182. [2022-04-06 19:05:35,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6182 states, 4165 states have (on average 1.3541416566626652) internal successors, (5640), 4266 states have internal predecessors, (5640), 1588 states have call successors, (1588), 404 states have call predecessors, (1588), 428 states have return successors, (1622), 1574 states have call predecessors, (1622), 1577 states have call successors, (1622) [2022-04-06 19:05:35,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6182 states to 6182 states and 8850 transitions. [2022-04-06 19:05:35,486 INFO L78 Accepts]: Start accepts. Automaton has 6182 states and 8850 transitions. Word has length 69 [2022-04-06 19:05:35,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:05:35,486 INFO L478 AbstractCegarLoop]: Abstraction has 6182 states and 8850 transitions. [2022-04-06 19:05:35,486 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) [2022-04-06 19:05:35,486 INFO L276 IsEmpty]: Start isEmpty. Operand 6182 states and 8850 transitions. [2022-04-06 19:05:35,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-04-06 19:05:35,488 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:05:35,488 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] [2022-04-06 19:05:35,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-04-06 19:05:35,688 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 [2022-04-06 19:05:35,689 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:05:35,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:05:35,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1825278757, now seen corresponding path program 1 times [2022-04-06 19:05:35,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:05:35,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1977356587] [2022-04-06 19:05:35,691 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:05:35,691 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:05:35,692 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:05:35,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1825278757, now seen corresponding path program 2 times [2022-04-06 19:05:35,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:05:35,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487394915] [2022-04-06 19:05:35,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:05:35,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:05:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:35,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:05:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:35,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:05:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:35,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:05:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:36,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:05:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:36,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:05:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:36,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:05:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:36,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:05:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:36,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 19:05:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:36,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:05:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:36,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:05:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:36,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:05:36,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:05:36,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487394915] [2022-04-06 19:05:36,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487394915] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:05:36,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171983936] [2022-04-06 19:05:36,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:05:36,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:05:36,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:05:36,116 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) [2022-04-06 19:05:36,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-04-06 19:05:37,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:05:37,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:05:37,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-06 19:05:37,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:05:37,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:05:37,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:05:37,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171983936] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:05:37,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:05:37,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-04-06 19:05:37,321 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:05:37,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1977356587] [2022-04-06 19:05:37,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1977356587] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:05:37,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:05:37,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 19:05:37,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801010708] [2022-04-06 19:05:37,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:05:37,322 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 19:05:37,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:05:37,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 19:05:37,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-04-06 19:05:37,323 INFO L87 Difference]: Start difference. First operand 6182 states and 8850 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) [2022-04-06 19:05:38,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:05:38,770 INFO L93 Difference]: Finished difference Result 6201 states and 8872 transitions. [2022-04-06 19:05:38,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 19:05:38,772 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 [2022-04-06 19:05:38,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:05:38,790 INFO L225 Difference]: With dead ends: 6201 [2022-04-06 19:05:38,790 INFO L226 Difference]: Without dead ends: 6171 [2022-04-06 19:05:38,795 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 [2022-04-06 19:05:38,795 INFO L913 BasicCegarLoop]: 2747 mSDtfsCounter, 9 mSDsluCounter, 24656 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:05:38,795 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 27403 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:05:38,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6171 states. [2022-04-06 19:05:40,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6171 to 6171. [2022-04-06 19:05:40,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6171 states, 4157 states have (on average 1.354582631705557) internal successors, (5631), 4258 states have internal predecessors, (5631), 1587 states have call successors, (1587), 404 states have call predecessors, (1587), 426 states have return successors, (1619), 1571 states have call predecessors, (1619), 1576 states have call successors, (1619) [2022-04-06 19:05:40,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6171 states to 6171 states and 8837 transitions. [2022-04-06 19:05:40,187 INFO L78 Accepts]: Start accepts. Automaton has 6171 states and 8837 transitions. Word has length 76 [2022-04-06 19:05:40,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:05:40,188 INFO L478 AbstractCegarLoop]: Abstraction has 6171 states and 8837 transitions. [2022-04-06 19:05:40,188 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) [2022-04-06 19:05:40,188 INFO L276 IsEmpty]: Start isEmpty. Operand 6171 states and 8837 transitions. [2022-04-06 19:05:40,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-06 19:05:40,190 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:05:40,190 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] [2022-04-06 19:05:40,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-04-06 19:05:40,390 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 [2022-04-06 19:05:40,391 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:05:40,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:05:40,391 INFO L85 PathProgramCache]: Analyzing trace with hash 2036422710, now seen corresponding path program 1 times [2022-04-06 19:05:40,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:05:40,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1897290106] [2022-04-06 19:05:40,394 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:05:40,394 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:05:40,394 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:05:40,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2036422710, now seen corresponding path program 2 times [2022-04-06 19:05:40,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:05:40,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115936129] [2022-04-06 19:05:40,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:05:40,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:05:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:40,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:05:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:40,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:05:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:40,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:05:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:40,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:05:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:40,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:05:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:40,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 19:05:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:40,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:05:40,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:05:40,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115936129] [2022-04-06 19:05:40,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115936129] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:05:40,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837285391] [2022-04-06 19:05:40,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:05:40,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:05:40,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:05:40,767 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) [2022-04-06 19:05:40,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-04-06 19:05:41,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:05:41,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:05:41,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-06 19:05:41,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:05:41,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:05:41,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:05:41,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837285391] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:05:41,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:05:41,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-04-06 19:05:41,838 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:05:41,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1897290106] [2022-04-06 19:05:41,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1897290106] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:05:41,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:05:41,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:05:41,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101612807] [2022-04-06 19:05:41,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:05:41,839 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:05:41,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:05:41,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:05:41,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-04-06 19:05:41,839 INFO L87 Difference]: Start difference. First operand 6171 states and 8837 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) [2022-04-06 19:05:43,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:05:43,466 INFO L93 Difference]: Finished difference Result 7605 states and 10892 transitions. [2022-04-06 19:05:43,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:05:43,467 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 [2022-04-06 19:05:43,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:05:43,486 INFO L225 Difference]: With dead ends: 7605 [2022-04-06 19:05:43,486 INFO L226 Difference]: Without dead ends: 7592 [2022-04-06 19:05:43,488 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 [2022-04-06 19:05:43,489 INFO L913 BasicCegarLoop]: 4541 mSDtfsCounter, 1925 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:05:43,489 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1925 Valid, 7218 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:05:43,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7592 states. [2022-04-06 19:05:44,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7592 to 6297. [2022-04-06 19:05:44,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6297 states, 4248 states have (on average 1.3486346516007532) internal successors, (5729), 4340 states have internal predecessors, (5729), 1597 states have call successors, (1597), 414 states have call predecessors, (1597), 451 states have return successors, (1655), 1607 states have call predecessors, (1655), 1586 states have call successors, (1655) [2022-04-06 19:05:44,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6297 states to 6297 states and 8981 transitions. [2022-04-06 19:05:44,750 INFO L78 Accepts]: Start accepts. Automaton has 6297 states and 8981 transitions. Word has length 67 [2022-04-06 19:05:44,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:05:44,750 INFO L478 AbstractCegarLoop]: Abstraction has 6297 states and 8981 transitions. [2022-04-06 19:05:44,750 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) [2022-04-06 19:05:44,751 INFO L276 IsEmpty]: Start isEmpty. Operand 6297 states and 8981 transitions. [2022-04-06 19:05:44,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-06 19:05:44,752 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:05:44,752 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] [2022-04-06 19:05:44,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-04-06 19:05:44,953 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 [2022-04-06 19:05:44,953 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:05:44,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:05:44,953 INFO L85 PathProgramCache]: Analyzing trace with hash -822110410, now seen corresponding path program 1 times [2022-04-06 19:05:44,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:05:44,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1324286115] [2022-04-06 19:05:44,956 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:05:44,957 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:05:44,957 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:05:44,957 INFO L85 PathProgramCache]: Analyzing trace with hash -822110410, now seen corresponding path program 2 times [2022-04-06 19:05:44,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:05:44,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915023777] [2022-04-06 19:05:44,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:05:44,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:05:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:45,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:05:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:45,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:05:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:45,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:05:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:45,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:05:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:45,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:05:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:45,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 19:05:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:45,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:05:45,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:05:45,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915023777] [2022-04-06 19:05:45,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915023777] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:05:45,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488520733] [2022-04-06 19:05:45,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:05:45,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:05:45,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:05:45,280 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) [2022-04-06 19:05:45,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-04-06 19:05:46,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:05:46,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:05:46,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-06 19:05:46,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:05:46,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:05:46,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:05:46,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488520733] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:05:46,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:05:46,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 9 [2022-04-06 19:05:46,368 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:05:46,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1324286115] [2022-04-06 19:05:46,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1324286115] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:05:46,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:05:46,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:05:46,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188068566] [2022-04-06 19:05:46,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:05:46,368 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:05:46,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:05:46,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:05:46,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-04-06 19:05:46,369 INFO L87 Difference]: Start difference. First operand 6297 states and 8981 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) [2022-04-06 19:05:47,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:05:47,682 INFO L93 Difference]: Finished difference Result 9053 states and 12967 transitions. [2022-04-06 19:05:47,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:05:47,682 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 [2022-04-06 19:05:47,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:05:47,701 INFO L225 Difference]: With dead ends: 9053 [2022-04-06 19:05:47,701 INFO L226 Difference]: Without dead ends: 6323 [2022-04-06 19:05:47,712 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 [2022-04-06 19:05:47,712 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 [2022-04-06 19:05:47,713 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] [2022-04-06 19:05:47,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6323 states. [2022-04-06 19:05:48,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6323 to 6303. [2022-04-06 19:05:48,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6303 states, 4254 states have (on average 1.3488481429243064) internal successors, (5738), 4346 states have internal predecessors, (5738), 1597 states have call successors, (1597), 414 states have call predecessors, (1597), 451 states have return successors, (1655), 1607 states have call predecessors, (1655), 1586 states have call successors, (1655) [2022-04-06 19:05:48,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6303 states to 6303 states and 8990 transitions. [2022-04-06 19:05:48,952 INFO L78 Accepts]: Start accepts. Automaton has 6303 states and 8990 transitions. Word has length 67 [2022-04-06 19:05:48,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:05:48,952 INFO L478 AbstractCegarLoop]: Abstraction has 6303 states and 8990 transitions. [2022-04-06 19:05:48,953 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) [2022-04-06 19:05:48,953 INFO L276 IsEmpty]: Start isEmpty. Operand 6303 states and 8990 transitions. [2022-04-06 19:05:48,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-06 19:05:48,954 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:05:48,954 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] [2022-04-06 19:05:48,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-04-06 19:05:49,155 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 [2022-04-06 19:05:49,155 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:05:49,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:05:49,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1783913144, now seen corresponding path program 1 times [2022-04-06 19:05:49,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:05:49,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1564081823] [2022-04-06 19:05:49,158 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:05:49,158 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:05:49,158 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:05:49,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1783913144, now seen corresponding path program 2 times [2022-04-06 19:05:49,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:05:49,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535827552] [2022-04-06 19:05:49,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:05:49,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:05:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:49,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:05:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:49,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:05:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:49,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:05:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:49,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:05:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:49,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:05:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:49,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 19:05:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:05:49,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:05:49,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:05:49,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535827552] [2022-04-06 19:05:49,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535827552] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:05:49,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464785521] [2022-04-06 19:05:49,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:05:49,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:05:49,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:05:49,453 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) [2022-04-06 19:05:49,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-04-06 19:05:50,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:05:50,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:05:50,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-06 19:05:50,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:05:50,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:05:50,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:05:50,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464785521] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:05:50,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:05:50,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-04-06 19:05:50,736 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:05:50,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1564081823] [2022-04-06 19:05:50,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1564081823] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:05:50,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:05:50,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 19:05:50,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808334701] [2022-04-06 19:05:50,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:05:50,736 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 19:05:50,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:05:50,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 19:05:50,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-04-06 19:05:50,737 INFO L87 Difference]: Start difference. First operand 6303 states and 8990 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) [2022-04-06 19:05:55,950 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 [] [2022-04-06 19:05:57,971 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 [] [2022-04-06 19:06:02,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:06:02,524 INFO L93 Difference]: Finished difference Result 6374 states and 9073 transitions. [2022-04-06 19:06:02,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 19:06:02,525 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 [2022-04-06 19:06:02,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:06:02,537 INFO L225 Difference]: With dead ends: 6374 [2022-04-06 19:06:02,538 INFO L226 Difference]: Without dead ends: 6144 [2022-04-06 19:06:02,540 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 [2022-04-06 19:06:02,540 INFO L913 BasicCegarLoop]: 2263 mSDtfsCounter, 1822 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 5098 mSolverCounterSat, 501 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2249 SdHoareTripleChecker+Valid, 3398 SdHoareTripleChecker+Invalid, 5601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 5098 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-04-06 19:06:02,540 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2249 Valid, 3398 Invalid, 5601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 5098 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2022-04-06 19:06:02,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6144 states. [2022-04-06 19:06:03,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6144 to 6142. [2022-04-06 19:06:03,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6142 states, 4136 states have (on average 1.3571083172147003) internal successors, (5613), 4250 states have internal predecessors, (5613), 1588 states have call successors, (1588), 406 states have call predecessors, (1588), 417 states have return successors, (1598), 1550 states have call predecessors, (1598), 1577 states have call successors, (1598) [2022-04-06 19:06:03,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 8799 transitions. [2022-04-06 19:06:03,917 INFO L78 Accepts]: Start accepts. Automaton has 6142 states and 8799 transitions. Word has length 67 [2022-04-06 19:06:03,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:06:03,917 INFO L478 AbstractCegarLoop]: Abstraction has 6142 states and 8799 transitions. [2022-04-06 19:06:03,917 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) [2022-04-06 19:06:03,917 INFO L276 IsEmpty]: Start isEmpty. Operand 6142 states and 8799 transitions. [2022-04-06 19:06:03,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-06 19:06:03,919 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:06:03,919 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] [2022-04-06 19:06:03,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-04-06 19:06:04,123 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 [2022-04-06 19:06:04,124 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:06:04,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:06:04,124 INFO L85 PathProgramCache]: Analyzing trace with hash -844197040, now seen corresponding path program 1 times [2022-04-06 19:06:04,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:06:04,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1449054829] [2022-04-06 19:06:04,127 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:06:04,127 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:06:04,127 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:06:04,127 INFO L85 PathProgramCache]: Analyzing trace with hash -844197040, now seen corresponding path program 2 times [2022-04-06 19:06:04,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:06:04,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784506262] [2022-04-06 19:06:04,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:06:04,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:06:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:04,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:06:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:04,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:06:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:04,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:06:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:04,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:06:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:04,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:06:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:04,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 19:06:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:04,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:06:04,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:06:04,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784506262] [2022-04-06 19:06:04,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784506262] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:06:04,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771768841] [2022-04-06 19:06:04,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:06:04,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:06:04,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:06:04,430 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) [2022-04-06 19:06:04,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-04-06 19:06:05,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:06:05,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:06:05,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-06 19:06:05,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:06:05,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:06:05,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:06:05,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771768841] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:06:05,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:06:05,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2022-04-06 19:06:05,601 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:06:05,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1449054829] [2022-04-06 19:06:05,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1449054829] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:06:05,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:06:05,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 19:06:05,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767182822] [2022-04-06 19:06:05,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:06:05,602 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 19:06:05,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:06:05,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 19:06:05,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-04-06 19:06:05,603 INFO L87 Difference]: Start difference. First operand 6142 states and 8799 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) [2022-04-06 19:06:07,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:06:07,071 INFO L93 Difference]: Finished difference Result 6181 states and 8844 transitions. [2022-04-06 19:06:07,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 19:06:07,072 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 [2022-04-06 19:06:07,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:06:07,091 INFO L225 Difference]: With dead ends: 6181 [2022-04-06 19:06:07,091 INFO L226 Difference]: Without dead ends: 6177 [2022-04-06 19:06:07,094 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-04-06 19:06:07,095 INFO L913 BasicCegarLoop]: 2719 mSDtfsCounter, 11 mSDsluCounter, 19009 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:06:07,095 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 21728 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:06:07,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6177 states. [2022-04-06 19:06:08,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6177 to 6162. [2022-04-06 19:06:08,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6162 states, 4153 states have (on average 1.35588731037804) internal successors, (5631), 4268 states have internal predecessors, (5631), 1589 states have call successors, (1589), 406 states have call predecessors, (1589), 419 states have return successors, (1604), 1553 states have call predecessors, (1604), 1578 states have call successors, (1604) [2022-04-06 19:06:08,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6162 states to 6162 states and 8824 transitions. [2022-04-06 19:06:08,511 INFO L78 Accepts]: Start accepts. Automaton has 6162 states and 8824 transitions. Word has length 68 [2022-04-06 19:06:08,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:06:08,512 INFO L478 AbstractCegarLoop]: Abstraction has 6162 states and 8824 transitions. [2022-04-06 19:06:08,512 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) [2022-04-06 19:06:08,512 INFO L276 IsEmpty]: Start isEmpty. Operand 6162 states and 8824 transitions. [2022-04-06 19:06:08,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-06 19:06:08,514 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:06:08,514 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] [2022-04-06 19:06:08,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-04-06 19:06:08,737 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 [2022-04-06 19:06:08,738 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:06:08,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:06:08,738 INFO L85 PathProgramCache]: Analyzing trace with hash -843920210, now seen corresponding path program 1 times [2022-04-06 19:06:08,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:06:08,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1294867493] [2022-04-06 19:06:08,740 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:06:08,740 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:06:08,740 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:06:08,741 INFO L85 PathProgramCache]: Analyzing trace with hash -843920210, now seen corresponding path program 2 times [2022-04-06 19:06:08,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:06:08,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980086728] [2022-04-06 19:06:08,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:06:08,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:06:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:08,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:06:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:08,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:06:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:08,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:06:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:09,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:06:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:09,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:06:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:09,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 19:06:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:06:09,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:06:09,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980086728] [2022-04-06 19:06:09,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980086728] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:06:09,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810596883] [2022-04-06 19:06:09,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:06:09,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:06:09,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:06:09,052 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) [2022-04-06 19:06:09,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-04-06 19:06:10,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:06:10,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:06:10,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 15 conjunts are in the unsatisfiable core [2022-04-06 19:06:10,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:06:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:06:10,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:06:10,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810596883] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:06:10,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:06:10,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2022-04-06 19:06:10,299 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:06:10,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1294867493] [2022-04-06 19:06:10,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1294867493] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:06:10,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:06:10,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 19:06:10,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038911275] [2022-04-06 19:06:10,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:06:10,300 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 19:06:10,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:06:10,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 19:06:10,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-04-06 19:06:10,300 INFO L87 Difference]: Start difference. First operand 6162 states and 8824 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) [2022-04-06 19:06:11,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:06:11,794 INFO L93 Difference]: Finished difference Result 6181 states and 8845 transitions. [2022-04-06 19:06:11,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 19:06:11,794 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 [2022-04-06 19:06:11,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:06:11,808 INFO L225 Difference]: With dead ends: 6181 [2022-04-06 19:06:11,809 INFO L226 Difference]: Without dead ends: 6163 [2022-04-06 19:06:11,811 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-04-06 19:06:11,811 INFO L913 BasicCegarLoop]: 2722 mSDtfsCounter, 7 mSDsluCounter, 18885 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21607 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 19:06:11,811 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 21607 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 19:06:11,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6163 states. [2022-04-06 19:06:13,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6163 to 6159. [2022-04-06 19:06:13,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6159 states, 4150 states have (on average 1.356144578313253) internal successors, (5628), 4266 states have internal predecessors, (5628), 1589 states have call successors, (1589), 406 states have call predecessors, (1589), 419 states have return successors, (1603), 1552 states have call predecessors, (1603), 1578 states have call successors, (1603) [2022-04-06 19:06:13,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6159 states to 6159 states and 8820 transitions. [2022-04-06 19:06:13,232 INFO L78 Accepts]: Start accepts. Automaton has 6159 states and 8820 transitions. Word has length 68 [2022-04-06 19:06:13,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:06:13,232 INFO L478 AbstractCegarLoop]: Abstraction has 6159 states and 8820 transitions. [2022-04-06 19:06:13,232 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) [2022-04-06 19:06:13,232 INFO L276 IsEmpty]: Start isEmpty. Operand 6159 states and 8820 transitions. [2022-04-06 19:06:13,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-04-06 19:06:13,234 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:06:13,234 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] [2022-04-06 19:06:13,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-04-06 19:06:13,434 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 [2022-04-06 19:06:13,434 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:06:13,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:06:13,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1268963390, now seen corresponding path program 1 times [2022-04-06 19:06:13,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:06:13,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1702250336] [2022-04-06 19:06:13,437 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:06:13,437 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:06:13,437 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:06:13,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1268963390, now seen corresponding path program 2 times [2022-04-06 19:06:13,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:06:13,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634670520] [2022-04-06 19:06:13,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:06:13,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:06:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:13,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:06:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:13,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:06:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:13,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:06:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:13,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-06 19:06:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:13,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:06:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:13,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-06 19:06:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:13,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-06 19:06:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:13,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:06:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:13,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:06:13,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:06:13,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634670520] [2022-04-06 19:06:13,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634670520] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:06:13,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516130311] [2022-04-06 19:06:13,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:06:13,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:06:13,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:06:13,787 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) [2022-04-06 19:06:13,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-04-06 19:06:14,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:06:14,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:06:14,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-06 19:06:14,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:06:15,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:06:15,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:06:15,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516130311] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:06:15,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:06:15,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-04-06 19:06:15,009 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:06:15,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1702250336] [2022-04-06 19:06:15,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1702250336] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:06:15,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:06:15,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:06:15,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651002665] [2022-04-06 19:06:15,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:06:15,009 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:06:15,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:06:15,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:06:15,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-04-06 19:06:15,010 INFO L87 Difference]: Start difference. First operand 6159 states and 8820 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) [2022-04-06 19:06:16,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:06:16,402 INFO L93 Difference]: Finished difference Result 6208 states and 8878 transitions. [2022-04-06 19:06:16,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:06:16,402 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 [2022-04-06 19:06:16,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:06:16,419 INFO L225 Difference]: With dead ends: 6208 [2022-04-06 19:06:16,420 INFO L226 Difference]: Without dead ends: 6204 [2022-04-06 19:06:16,423 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 [2022-04-06 19:06:16,423 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 [2022-04-06 19:06:16,423 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] [2022-04-06 19:06:16,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6204 states. [2022-04-06 19:06:17,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6204 to 6157. [2022-04-06 19:06:17,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6157 states, 4150 states have (on average 1.3556626506024096) internal successors, (5626), 4264 states have internal predecessors, (5626), 1587 states have call successors, (1587), 406 states have call predecessors, (1587), 419 states have return successors, (1603), 1552 states have call predecessors, (1603), 1578 states have call successors, (1603) [2022-04-06 19:06:17,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6157 states to 6157 states and 8816 transitions. [2022-04-06 19:06:17,731 INFO L78 Accepts]: Start accepts. Automaton has 6157 states and 8816 transitions. Word has length 74 [2022-04-06 19:06:17,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:06:17,731 INFO L478 AbstractCegarLoop]: Abstraction has 6157 states and 8816 transitions. [2022-04-06 19:06:17,732 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) [2022-04-06 19:06:17,732 INFO L276 IsEmpty]: Start isEmpty. Operand 6157 states and 8816 transitions. [2022-04-06 19:06:17,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 19:06:17,733 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:06:17,733 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] [2022-04-06 19:06:17,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-04-06 19:06:17,934 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 [2022-04-06 19:06:17,934 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:06:17,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:06:17,934 INFO L85 PathProgramCache]: Analyzing trace with hash -978476308, now seen corresponding path program 1 times [2022-04-06 19:06:17,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:06:17,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1326510553] [2022-04-06 19:06:17,936 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:06:17,936 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:06:17,937 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:06:17,937 INFO L85 PathProgramCache]: Analyzing trace with hash -978476308, now seen corresponding path program 2 times [2022-04-06 19:06:17,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:06:17,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520677070] [2022-04-06 19:06:17,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:06:17,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:06:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:18,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:06:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:18,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:06:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:18,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:06:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:18,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:06:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:18,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:06:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:18,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 19:06:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:18,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:06:18,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:06:18,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520677070] [2022-04-06 19:06:18,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520677070] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:06:18,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785929235] [2022-04-06 19:06:18,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:06:18,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:06:18,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:06:18,256 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) [2022-04-06 19:06:18,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-04-06 19:06:19,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:06:19,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:06:19,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-06 19:06:19,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:06:19,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:06:19,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:06:19,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785929235] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:06:19,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:06:19,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-04-06 19:06:19,599 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:06:19,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1326510553] [2022-04-06 19:06:19,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1326510553] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:06:19,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:06:19,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 19:06:19,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458413065] [2022-04-06 19:06:19,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:06:19,600 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 19:06:19,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:06:19,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 19:06:19,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-06 19:06:19,600 INFO L87 Difference]: Start difference. First operand 6157 states and 8816 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-06 19:06:23,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:06:23,758 INFO L93 Difference]: Finished difference Result 7454 states and 10712 transitions. [2022-04-06 19:06:23,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 19:06:23,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (8), 3 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 [2022-04-06 19:06:23,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:06:23,778 INFO L225 Difference]: With dead ends: 7454 [2022-04-06 19:06:23,778 INFO L226 Difference]: Without dead ends: 7433 [2022-04-06 19:06:23,782 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-06 19:06:23,782 INFO L913 BasicCegarLoop]: 4524 mSDtfsCounter, 5710 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5711 SdHoareTripleChecker+Valid, 6196 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-04-06 19:06:23,782 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5711 Valid, 6196 Invalid, 1752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-04-06 19:06:23,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7433 states. [2022-04-06 19:06:25,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7433 to 6139. [2022-04-06 19:06:25,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6139 states, 4136 states have (on average 1.355899419729207) internal successors, (5608), 4248 states have internal predecessors, (5608), 1585 states have call successors, (1585), 406 states have call predecessors, (1585), 417 states have return successors, (1597), 1549 states have call predecessors, (1597), 1576 states have call successors, (1597) [2022-04-06 19:06:25,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6139 states to 6139 states and 8790 transitions. [2022-04-06 19:06:25,256 INFO L78 Accepts]: Start accepts. Automaton has 6139 states and 8790 transitions. Word has length 69 [2022-04-06 19:06:25,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:06:25,257 INFO L478 AbstractCegarLoop]: Abstraction has 6139 states and 8790 transitions. [2022-04-06 19:06:25,257 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-06 19:06:25,257 INFO L276 IsEmpty]: Start isEmpty. Operand 6139 states and 8790 transitions. [2022-04-06 19:06:25,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 19:06:25,258 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:06:25,258 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] [2022-04-06 19:06:25,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-04-06 19:06:25,459 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 [2022-04-06 19:06:25,459 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:06:25,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:06:25,459 INFO L85 PathProgramCache]: Analyzing trace with hash 635026972, now seen corresponding path program 1 times [2022-04-06 19:06:25,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:06:25,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1832650509] [2022-04-06 19:06:25,465 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:06:25,465 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:06:25,465 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:06:25,465 INFO L85 PathProgramCache]: Analyzing trace with hash 635026972, now seen corresponding path program 2 times [2022-04-06 19:06:25,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:06:25,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266440959] [2022-04-06 19:06:25,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:06:25,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:06:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:25,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:06:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:25,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:06:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:25,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:06:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:25,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:06:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:25,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:06:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:25,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-04-06 19:06:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:06:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:06:25,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:06:25,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266440959] [2022-04-06 19:06:25,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266440959] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:06:25,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:06:25,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 19:06:25,823 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:06:25,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1832650509] [2022-04-06 19:06:25,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1832650509] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:06:25,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:06:25,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 19:06:25,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772259522] [2022-04-06 19:06:25,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:06:25,823 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 19:06:25,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:06:25,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 19:06:25,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-04-06 19:06:25,824 INFO L87 Difference]: Start difference. First operand 6139 states and 8790 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 19:06:31,433 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:06:33,445 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:06:35,945 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:06:37,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:06:39,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:06:41,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:06:43,736 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:06:45,756 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:06:47,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:06:49,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:06:51,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:06:53,836 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:07:07,900 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:07:09,922 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:07:11,043 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:07:12,341 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:07:14,359 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:07:16,190 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:07:18,214 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:07:33,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:07:33,815 INFO L93 Difference]: Finished difference Result 6879 states and 9913 transitions. [2022-04-06 19:07:33,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 19:07:33,815 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (8), 6 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 [2022-04-06 19:07:33,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:07:33,832 INFO L225 Difference]: With dead ends: 6879 [2022-04-06 19:07:33,832 INFO L226 Difference]: Without dead ends: 6844 [2022-04-06 19:07:33,835 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-04-06 19:07:33,835 INFO L913 BasicCegarLoop]: 2121 mSDtfsCounter, 2495 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 20749 mSolverCounterSat, 1640 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2707 SdHoareTripleChecker+Valid, 4077 SdHoareTripleChecker+Invalid, 22403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1640 IncrementalHoareTripleChecker+Valid, 20749 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.5s IncrementalHoareTripleChecker+Time [2022-04-06 19:07:33,835 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2707 Valid, 4077 Invalid, 22403 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1640 Valid, 20749 Invalid, 14 Unknown, 0 Unchecked, 65.5s Time] [2022-04-06 19:07:33,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6844 states. [2022-04-06 19:07:35,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6844 to 6117. [2022-04-06 19:07:35,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6117 states, 4119 states have (on average 1.3568827385287692) internal successors, (5589), 4231 states have internal predecessors, (5589), 1582 states have call successors, (1582), 404 states have call predecessors, (1582), 415 states have return successors, (1594), 1546 states have call predecessors, (1594), 1573 states have call successors, (1594) [2022-04-06 19:07:35,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6117 states to 6117 states and 8765 transitions. [2022-04-06 19:07:35,492 INFO L78 Accepts]: Start accepts. Automaton has 6117 states and 8765 transitions. Word has length 69 [2022-04-06 19:07:35,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:07:35,492 INFO L478 AbstractCegarLoop]: Abstraction has 6117 states and 8765 transitions. [2022-04-06 19:07:35,492 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 19:07:35,492 INFO L276 IsEmpty]: Start isEmpty. Operand 6117 states and 8765 transitions. [2022-04-06 19:07:35,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-04-06 19:07:35,494 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:07:35,494 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] [2022-04-06 19:07:35,494 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-04-06 19:07:35,494 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:07:35,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:07:35,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1578229099, now seen corresponding path program 1 times [2022-04-06 19:07:35,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:07:35,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1025550764] [2022-04-06 19:07:35,499 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:07:35,499 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:07:35,499 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:07:35,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1578229099, now seen corresponding path program 2 times [2022-04-06 19:07:35,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:07:35,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920894377] [2022-04-06 19:07:35,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:07:35,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:07:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:35,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:07:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:35,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:07:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:35,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:07:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:35,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:07:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:35,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:07:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:35,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-06 19:07:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:35,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-06 19:07:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:35,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-06 19:07:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:07:35,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:07:35,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920894377] [2022-04-06 19:07:35,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920894377] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:07:35,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280373066] [2022-04-06 19:07:35,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:07:35,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:07:35,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:07:35,799 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) [2022-04-06 19:07:35,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-04-06 19:07:36,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:07:36,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:07:36,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-06 19:07:36,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:07:37,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:07:37,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:07:37,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280373066] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:07:37,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:07:37,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-04-06 19:07:37,021 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:07:37,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1025550764] [2022-04-06 19:07:37,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1025550764] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:07:37,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:07:37,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:07:37,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44739943] [2022-04-06 19:07:37,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:07:37,021 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:07:37,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:07:37,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:07:37,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-06 19:07:37,022 INFO L87 Difference]: Start difference. First operand 6117 states and 8765 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) [2022-04-06 19:07:38,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:07:38,805 INFO L93 Difference]: Finished difference Result 8762 states and 12610 transitions. [2022-04-06 19:07:38,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:07:38,805 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 [2022-04-06 19:07:38,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:07:38,823 INFO L225 Difference]: With dead ends: 8762 [2022-04-06 19:07:38,824 INFO L226 Difference]: Without dead ends: 6097 [2022-04-06 19:07:38,834 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 [2022-04-06 19:07:38,834 INFO L913 BasicCegarLoop]: 2696 mSDtfsCounter, 19 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:07:38,834 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 5334 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:07:38,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6097 states. [2022-04-06 19:07:40,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6097 to 6097. [2022-04-06 19:07:40,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6097 states, 4107 states have (on average 1.3567080594107621) internal successors, (5572), 4217 states have internal predecessors, (5572), 1578 states have call successors, (1578), 402 states have call predecessors, (1578), 411 states have return successors, (1590), 1542 states have call predecessors, (1590), 1571 states have call successors, (1590) [2022-04-06 19:07:40,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6097 states to 6097 states and 8740 transitions. [2022-04-06 19:07:40,476 INFO L78 Accepts]: Start accepts. Automaton has 6097 states and 8740 transitions. Word has length 76 [2022-04-06 19:07:40,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:07:40,476 INFO L478 AbstractCegarLoop]: Abstraction has 6097 states and 8740 transitions. [2022-04-06 19:07:40,476 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) [2022-04-06 19:07:40,476 INFO L276 IsEmpty]: Start isEmpty. Operand 6097 states and 8740 transitions. [2022-04-06 19:07:40,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-04-06 19:07:40,478 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:07:40,478 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:07:40,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-04-06 19:07:40,679 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 [2022-04-06 19:07:40,679 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:07:40,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:07:40,679 INFO L85 PathProgramCache]: Analyzing trace with hash -902471083, now seen corresponding path program 1 times [2022-04-06 19:07:40,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:07:40,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [657580899] [2022-04-06 19:07:40,683 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:07:40,683 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:07:40,683 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:07:40,683 INFO L85 PathProgramCache]: Analyzing trace with hash -902471083, now seen corresponding path program 2 times [2022-04-06 19:07:40,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:07:40,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103527122] [2022-04-06 19:07:40,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:07:40,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:07:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:40,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:07:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:40,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:07:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:40,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:07:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:40,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 19:07:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:40,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 19:07:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:41,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:07:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:41,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:07:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:41,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 19:07:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:41,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:07:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:41,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-06 19:07:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:41,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:07:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:41,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:07:41,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:07:41,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103527122] [2022-04-06 19:07:41,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103527122] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:07:41,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630714678] [2022-04-06 19:07:41,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:07:41,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:07:41,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:07:41,053 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) [2022-04-06 19:07:41,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-04-06 19:07:42,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:07:42,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:07:42,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-06 19:07:42,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:07:42,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:07:42,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:07:42,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630714678] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:07:42,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:07:42,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-04-06 19:07:42,371 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:07:42,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [657580899] [2022-04-06 19:07:42,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [657580899] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:07:42,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:07:42,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 19:07:42,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89534512] [2022-04-06 19:07:42,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:07:42,372 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 19:07:42,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:07:42,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 19:07:42,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-04-06 19:07:42,372 INFO L87 Difference]: Start difference. First operand 6097 states and 8740 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) [2022-04-06 19:07:44,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:07:44,207 INFO L93 Difference]: Finished difference Result 6112 states and 8757 transitions. [2022-04-06 19:07:44,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 19:07:44,208 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 [2022-04-06 19:07:44,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:07:44,220 INFO L225 Difference]: With dead ends: 6112 [2022-04-06 19:07:44,220 INFO L226 Difference]: Without dead ends: 6079 [2022-04-06 19:07:44,222 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 [2022-04-06 19:07:44,222 INFO L913 BasicCegarLoop]: 2677 mSDtfsCounter, 8 mSDsluCounter, 24060 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 19:07:44,222 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26737 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 19:07:44,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6079 states. [2022-04-06 19:07:45,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6079 to 6079. [2022-04-06 19:07:45,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6079 states, 4096 states have (on average 1.357421875) internal successors, (5560), 4206 states have internal predecessors, (5560), 1573 states have call successors, (1573), 400 states have call predecessors, (1573), 409 states have return successors, (1585), 1537 states have call predecessors, (1585), 1566 states have call successors, (1585) [2022-04-06 19:07:45,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6079 states to 6079 states and 8718 transitions. [2022-04-06 19:07:45,858 INFO L78 Accepts]: Start accepts. Automaton has 6079 states and 8718 transitions. Word has length 78 [2022-04-06 19:07:45,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:07:45,858 INFO L478 AbstractCegarLoop]: Abstraction has 6079 states and 8718 transitions. [2022-04-06 19:07:45,858 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) [2022-04-06 19:07:45,858 INFO L276 IsEmpty]: Start isEmpty. Operand 6079 states and 8718 transitions. [2022-04-06 19:07:45,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-04-06 19:07:45,860 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:07:45,860 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] [2022-04-06 19:07:45,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-04-06 19:07:46,061 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 [2022-04-06 19:07:46,061 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:07:46,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:07:46,061 INFO L85 PathProgramCache]: Analyzing trace with hash -363355348, now seen corresponding path program 1 times [2022-04-06 19:07:46,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:07:46,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [938688758] [2022-04-06 19:07:46,064 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:07:46,064 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:07:46,064 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:07:46,064 INFO L85 PathProgramCache]: Analyzing trace with hash -363355348, now seen corresponding path program 2 times [2022-04-06 19:07:46,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:07:46,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209712420] [2022-04-06 19:07:46,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:07:46,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:07:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:46,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:07:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:46,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:07:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:46,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:07:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:46,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:07:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:46,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:07:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:46,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:07:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:46,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-06 19:07:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:46,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-06 19:07:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:46,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-06 19:07:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:46,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:07:46,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:07:46,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209712420] [2022-04-06 19:07:46,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209712420] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:07:46,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704070544] [2022-04-06 19:07:46,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:07:46,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:07:46,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:07:46,400 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) [2022-04-06 19:07:46,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-04-06 19:07:47,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:07:47,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:07:47,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 2221 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-06 19:07:47,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:07:47,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:07:47,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:07:47,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704070544] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:07:47,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:07:47,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-04-06 19:07:47,720 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:07:47,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [938688758] [2022-04-06 19:07:47,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [938688758] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:07:47,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:07:47,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:07:47,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676182713] [2022-04-06 19:07:47,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:07:47,721 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:07:47,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:07:47,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:07:47,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-06 19:07:47,721 INFO L87 Difference]: Start difference. First operand 6079 states and 8718 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2022-04-06 19:07:48,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:07:48,980 INFO L93 Difference]: Finished difference Result 7004 states and 10005 transitions. [2022-04-06 19:07:48,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:07:48,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 85 [2022-04-06 19:07:48,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:07:48,990 INFO L225 Difference]: With dead ends: 7004 [2022-04-06 19:07:48,990 INFO L226 Difference]: Without dead ends: 4328 [2022-04-06 19:07:48,997 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-06 19:07:48,997 INFO L913 BasicCegarLoop]: 3778 mSDtfsCounter, 1983 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 5568 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 [2022-04-06 19:07:48,997 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1983 Valid, 5568 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 19:07:49,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4328 states. [2022-04-06 19:07:50,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4328 to 4210. [2022-04-06 19:07:50,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4210 states, 2812 states have (on average 1.3424608819345663) internal successors, (3775), 2885 states have internal predecessors, (3775), 1101 states have call successors, (1101), 289 states have call predecessors, (1101), 296 states have return successors, (1107), 1080 states have call predecessors, (1107), 1094 states have call successors, (1107) [2022-04-06 19:07:50,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4210 states to 4210 states and 5983 transitions. [2022-04-06 19:07:50,182 INFO L78 Accepts]: Start accepts. Automaton has 4210 states and 5983 transitions. Word has length 85 [2022-04-06 19:07:50,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:07:50,182 INFO L478 AbstractCegarLoop]: Abstraction has 4210 states and 5983 transitions. [2022-04-06 19:07:50,182 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2022-04-06 19:07:50,182 INFO L276 IsEmpty]: Start isEmpty. Operand 4210 states and 5983 transitions. [2022-04-06 19:07:50,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-04-06 19:07:50,184 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:07:50,184 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] [2022-04-06 19:07:50,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-04-06 19:07:50,409 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 [2022-04-06 19:07:50,409 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:07:50,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:07:50,409 INFO L85 PathProgramCache]: Analyzing trace with hash -687831844, now seen corresponding path program 1 times [2022-04-06 19:07:50,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:07:50,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [121585732] [2022-04-06 19:07:50,412 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:07:50,412 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:07:50,412 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:07:50,412 INFO L85 PathProgramCache]: Analyzing trace with hash -687831844, now seen corresponding path program 2 times [2022-04-06 19:07:50,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:07:50,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024213174] [2022-04-06 19:07:50,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:07:50,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:07:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:50,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:07:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:50,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:07:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:50,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:07:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:50,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:07:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:50,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:07:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:50,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:07:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:50,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:07:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:50,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:07:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:50,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-06 19:07:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:50,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:07:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:50,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:07:50,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:07:50,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024213174] [2022-04-06 19:07:50,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024213174] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:07:50,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018389399] [2022-04-06 19:07:50,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:07:50,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:07:50,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:07:50,769 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) [2022-04-06 19:07:50,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-04-06 19:07:51,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:07:51,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:07:51,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 19:07:51,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:07:52,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:07:52,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:07:52,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018389399] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:07:52,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:07:52,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-04-06 19:07:52,160 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:07:52,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [121585732] [2022-04-06 19:07:52,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [121585732] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:07:52,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:07:52,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 19:07:52,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074770092] [2022-04-06 19:07:52,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:07:52,161 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 19:07:52,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:07:52,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 19:07:52,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-04-06 19:07:52,161 INFO L87 Difference]: Start difference. First operand 4210 states and 5983 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) [2022-04-06 19:07:55,355 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 [] [2022-04-06 19:07:56,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:07:56,663 INFO L93 Difference]: Finished difference Result 4232 states and 6009 transitions. [2022-04-06 19:07:56,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 19:07:56,663 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 [2022-04-06 19:07:56,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:07:56,673 INFO L225 Difference]: With dead ends: 4232 [2022-04-06 19:07:56,674 INFO L226 Difference]: Without dead ends: 4210 [2022-04-06 19:07:56,675 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-04-06 19:07:56,675 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, 3.2s IncrementalHoareTripleChecker+Time [2022-04-06 19:07:56,675 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 13327 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-04-06 19:07:56,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4210 states. [2022-04-06 19:07:57,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4210 to 4210. [2022-04-06 19:07:57,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4210 states, 2812 states have (on average 1.341394025604552) internal successors, (3772), 2885 states have internal predecessors, (3772), 1101 states have call successors, (1101), 289 states have call predecessors, (1101), 296 states have return successors, (1107), 1080 states have call predecessors, (1107), 1094 states have call successors, (1107) [2022-04-06 19:07:57,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4210 states to 4210 states and 5980 transitions. [2022-04-06 19:07:57,906 INFO L78 Accepts]: Start accepts. Automaton has 4210 states and 5980 transitions. Word has length 87 [2022-04-06 19:07:57,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:07:57,906 INFO L478 AbstractCegarLoop]: Abstraction has 4210 states and 5980 transitions. [2022-04-06 19:07:57,907 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) [2022-04-06 19:07:57,907 INFO L276 IsEmpty]: Start isEmpty. Operand 4210 states and 5980 transitions. [2022-04-06 19:07:57,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-04-06 19:07:57,909 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:07:57,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:07:57,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-04-06 19:07:58,109 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 [2022-04-06 19:07:58,109 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:07:58,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:07:58,110 INFO L85 PathProgramCache]: Analyzing trace with hash 889808946, now seen corresponding path program 1 times [2022-04-06 19:07:58,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:07:58,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1498319368] [2022-04-06 19:07:58,112 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:07:58,112 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:07:58,112 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:07:58,112 INFO L85 PathProgramCache]: Analyzing trace with hash 889808946, now seen corresponding path program 2 times [2022-04-06 19:07:58,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:07:58,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097134309] [2022-04-06 19:07:58,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:07:58,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:07:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:58,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:07:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:58,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:07:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:58,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:07:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:58,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:07:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:58,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:07:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:58,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:07:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:58,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-06 19:07:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:58,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:07:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:58,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 19:07:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:58,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:07:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:07:58,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:07:58,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:07:58,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097134309] [2022-04-06 19:07:58,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097134309] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:07:58,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694686674] [2022-04-06 19:07:58,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:07:58,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:07:58,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:07:58,479 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) [2022-04-06 19:07:58,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-04-06 19:07:59,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:07:59,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:07:59,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 19:07:59,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:07:59,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:07:59,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:07:59,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694686674] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:07:59,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:07:59,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-04-06 19:07:59,823 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:07:59,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1498319368] [2022-04-06 19:07:59,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1498319368] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:07:59,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:07:59,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 19:07:59,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531268791] [2022-04-06 19:07:59,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:07:59,824 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 19:07:59,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:07:59,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 19:07:59,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-04-06 19:07:59,825 INFO L87 Difference]: Start difference. First operand 4210 states and 5980 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) [2022-04-06 19:08:01,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:08:01,270 INFO L93 Difference]: Finished difference Result 4239 states and 6015 transitions. [2022-04-06 19:08:01,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 19:08:01,270 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 [2022-04-06 19:08:01,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:08:01,279 INFO L225 Difference]: With dead ends: 4239 [2022-04-06 19:08:01,279 INFO L226 Difference]: Without dead ends: 3795 [2022-04-06 19:08:01,282 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-04-06 19:08:01,282 INFO L913 BasicCegarLoop]: 2676 mSDtfsCounter, 17 mSDsluCounter, 10634 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 13310 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 19:08:01,282 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 13310 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 19:08:01,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3795 states. [2022-04-06 19:08:02,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3795 to 3768. [2022-04-06 19:08:02,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3768 states, 2544 states have (on average 1.3404088050314464) internal successors, (3410), 2612 states have internal predecessors, (3410), 946 states have call successors, (946), 271 states have call predecessors, (946), 277 states have return successors, (951), 926 states have call predecessors, (951), 939 states have call successors, (951) [2022-04-06 19:08:02,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3768 states to 3768 states and 5307 transitions. [2022-04-06 19:08:02,392 INFO L78 Accepts]: Start accepts. Automaton has 3768 states and 5307 transitions. Word has length 88 [2022-04-06 19:08:02,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:08:02,392 INFO L478 AbstractCegarLoop]: Abstraction has 3768 states and 5307 transitions. [2022-04-06 19:08:02,393 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) [2022-04-06 19:08:02,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3768 states and 5307 transitions. [2022-04-06 19:08:02,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-04-06 19:08:02,394 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:08:02,394 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] [2022-04-06 19:08:02,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-04-06 19:08:02,595 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 [2022-04-06 19:08:02,595 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:08:02,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:08:02,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1084992937, now seen corresponding path program 1 times [2022-04-06 19:08:02,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:02,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [215070522] [2022-04-06 19:08:02,597 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:08:02,598 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:08:02,598 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:08:02,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1084992937, now seen corresponding path program 2 times [2022-04-06 19:08:02,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:08:02,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716554305] [2022-04-06 19:08:02,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:08:02,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:08:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:02,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:08:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:02,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:08:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:02,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:08:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:02,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:08:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:02,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:08:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:02,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:02,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-06 19:08:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:02,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:08:02,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:08:02,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716554305] [2022-04-06 19:08:02,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716554305] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:08:02,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342104720] [2022-04-06 19:08:02,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:08:02,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:08:02,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:08:02,944 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) [2022-04-06 19:08:02,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-04-06 19:08:04,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:08:04,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:08:04,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 19:08:04,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:08:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:08:04,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:08:04,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342104720] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:04,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:08:04,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-04-06 19:08:04,288 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:08:04,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [215070522] [2022-04-06 19:08:04,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [215070522] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:04,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:08:04,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 19:08:04,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511035800] [2022-04-06 19:08:04,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:08:04,288 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 19:08:04,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:04,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 19:08:04,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-04-06 19:08:04,289 INFO L87 Difference]: Start difference. First operand 3768 states and 5307 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) [2022-04-06 19:08:05,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:08:05,441 INFO L93 Difference]: Finished difference Result 3827 states and 5377 transitions. [2022-04-06 19:08:05,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 19:08:05,442 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 [2022-04-06 19:08:05,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:08:05,449 INFO L225 Difference]: With dead ends: 3827 [2022-04-06 19:08:05,449 INFO L226 Difference]: Without dead ends: 3780 [2022-04-06 19:08:05,450 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 [2022-04-06 19:08:05,450 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, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:08:05,450 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 12519 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:08:05,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3780 states. [2022-04-06 19:08:06,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3780 to 3773. [2022-04-06 19:08:06,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3773 states, 2548 states have (on average 1.3398744113029828) internal successors, (3414), 2616 states have internal predecessors, (3414), 946 states have call successors, (946), 271 states have call predecessors, (946), 278 states have return successors, (952), 927 states have call predecessors, (952), 939 states have call successors, (952) [2022-04-06 19:08:06,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3773 states to 3773 states and 5312 transitions. [2022-04-06 19:08:06,550 INFO L78 Accepts]: Start accepts. Automaton has 3773 states and 5312 transitions. Word has length 82 [2022-04-06 19:08:06,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:08:06,550 INFO L478 AbstractCegarLoop]: Abstraction has 3773 states and 5312 transitions. [2022-04-06 19:08:06,550 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) [2022-04-06 19:08:06,550 INFO L276 IsEmpty]: Start isEmpty. Operand 3773 states and 5312 transitions. [2022-04-06 19:08:06,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-04-06 19:08:06,552 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:08:06,552 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] [2022-04-06 19:08:06,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-04-06 19:08:06,762 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 [2022-04-06 19:08:06,763 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:08:06,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:08:06,763 INFO L85 PathProgramCache]: Analyzing trace with hash -10828563, now seen corresponding path program 1 times [2022-04-06 19:08:06,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:06,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1089504627] [2022-04-06 19:08:06,765 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:08:06,765 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:08:06,765 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:08:06,765 INFO L85 PathProgramCache]: Analyzing trace with hash -10828563, now seen corresponding path program 2 times [2022-04-06 19:08:06,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:08:06,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141667203] [2022-04-06 19:08:06,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:08:06,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:08:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:06,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:08:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:06,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:08:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:07,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:08:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:07,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:08:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:07,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:08:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:07,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:07,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:08:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:07,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:08:07,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:08:07,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141667203] [2022-04-06 19:08:07,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141667203] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:08:07,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140926157] [2022-04-06 19:08:07,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:08:07,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:08:07,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:08:07,121 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) [2022-04-06 19:08:07,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-04-06 19:08:08,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:08:08,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:08:08,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 1753 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 19:08:08,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:08:08,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:08:08,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:08:08,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140926157] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:08,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:08:08,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-04-06 19:08:08,446 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:08:08,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1089504627] [2022-04-06 19:08:08,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1089504627] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:08,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:08:08,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 19:08:08,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084691621] [2022-04-06 19:08:08,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:08:08,447 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 19:08:08,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:08,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 19:08:08,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-04-06 19:08:08,447 INFO L87 Difference]: Start difference. First operand 3773 states and 5312 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) [2022-04-06 19:08:09,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:08:09,603 INFO L93 Difference]: Finished difference Result 3887 states and 5445 transitions. [2022-04-06 19:08:09,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 19:08:09,604 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 [2022-04-06 19:08:09,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:08:09,612 INFO L225 Difference]: With dead ends: 3887 [2022-04-06 19:08:09,612 INFO L226 Difference]: Without dead ends: 3784 [2022-04-06 19:08:09,613 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 [2022-04-06 19:08:09,613 INFO L913 BasicCegarLoop]: 2511 mSDtfsCounter, 21 mSDsluCounter, 10002 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-04-06 19:08:09,614 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] [2022-04-06 19:08:09,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3784 states. [2022-04-06 19:08:10,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3784 to 3778. [2022-04-06 19:08:10,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3778 states, 2552 states have (on average 1.3393416927899686) internal successors, (3418), 2620 states have internal predecessors, (3418), 946 states have call successors, (946), 271 states have call predecessors, (946), 279 states have return successors, (953), 928 states have call predecessors, (953), 939 states have call successors, (953) [2022-04-06 19:08:10,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3778 states to 3778 states and 5317 transitions. [2022-04-06 19:08:10,694 INFO L78 Accepts]: Start accepts. Automaton has 3778 states and 5317 transitions. Word has length 85 [2022-04-06 19:08:10,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:08:10,694 INFO L478 AbstractCegarLoop]: Abstraction has 3778 states and 5317 transitions. [2022-04-06 19:08:10,694 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) [2022-04-06 19:08:10,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3778 states and 5317 transitions. [2022-04-06 19:08:10,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-04-06 19:08:10,696 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:08:10,696 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] [2022-04-06 19:08:10,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-04-06 19:08:10,897 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 [2022-04-06 19:08:10,897 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:08:10,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:08:10,898 INFO L85 PathProgramCache]: Analyzing trace with hash -762410768, now seen corresponding path program 1 times [2022-04-06 19:08:10,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:10,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1068452191] [2022-04-06 19:08:10,900 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:08:10,900 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:08:10,900 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:08:10,900 INFO L85 PathProgramCache]: Analyzing trace with hash -762410768, now seen corresponding path program 2 times [2022-04-06 19:08:10,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:08:10,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691160785] [2022-04-06 19:08:10,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:08:10,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:08:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:11,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:08:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:11,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:08:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:11,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:08:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:11,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:08:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:11,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:11,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:11,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:08:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:11,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 19:08:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:11,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-06 19:08:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:11,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:11,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-06 19:08:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:11,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:11,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:08:11,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:08:11,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691160785] [2022-04-06 19:08:11,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691160785] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:08:11,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593026616] [2022-04-06 19:08:11,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:08:11,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:08:11,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:08:11,251 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) [2022-04-06 19:08:11,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-04-06 19:08:12,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:08:12,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:08:12,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-06 19:08:12,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:08:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:08:12,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:08:12,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593026616] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:12,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:08:12,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-04-06 19:08:12,581 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:08:12,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1068452191] [2022-04-06 19:08:12,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1068452191] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:12,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:08:12,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:08:12,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552498546] [2022-04-06 19:08:12,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:08:12,582 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:08:12,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:12,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:08:12,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-04-06 19:08:12,583 INFO L87 Difference]: Start difference. First operand 3778 states and 5317 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) [2022-04-06 19:08:13,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:08:13,648 INFO L93 Difference]: Finished difference Result 3840 states and 5387 transitions. [2022-04-06 19:08:13,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:08:13,648 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 [2022-04-06 19:08:13,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:08:13,655 INFO L225 Difference]: With dead ends: 3840 [2022-04-06 19:08:13,656 INFO L226 Difference]: Without dead ends: 3783 [2022-04-06 19:08:13,656 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 [2022-04-06 19:08:13,657 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 [2022-04-06 19:08:13,657 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] [2022-04-06 19:08:13,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2022-04-06 19:08:14,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3783. [2022-04-06 19:08:14,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3783 states, 2555 states have (on average 1.3389432485322896) internal successors, (3421), 2623 states have internal predecessors, (3421), 948 states have call successors, (948), 271 states have call predecessors, (948), 279 states have return successors, (955), 930 states have call predecessors, (955), 941 states have call successors, (955) [2022-04-06 19:08:14,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3783 states to 3783 states and 5324 transitions. [2022-04-06 19:08:14,765 INFO L78 Accepts]: Start accepts. Automaton has 3783 states and 5324 transitions. Word has length 88 [2022-04-06 19:08:14,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:08:14,765 INFO L478 AbstractCegarLoop]: Abstraction has 3783 states and 5324 transitions. [2022-04-06 19:08:14,766 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) [2022-04-06 19:08:14,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3783 states and 5324 transitions. [2022-04-06 19:08:14,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-04-06 19:08:14,767 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:08:14,768 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] [2022-04-06 19:08:14,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-04-06 19:08:14,968 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 [2022-04-06 19:08:14,968 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:08:14,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:08:14,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1395598084, now seen corresponding path program 1 times [2022-04-06 19:08:14,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:14,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1562751215] [2022-04-06 19:08:14,971 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:08:14,971 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:08:14,971 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:08:14,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1395598084, now seen corresponding path program 2 times [2022-04-06 19:08:14,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:08:14,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491055626] [2022-04-06 19:08:14,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:08:14,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:08:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:15,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:08:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:15,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:08:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:15,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:08:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:15,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:08:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:15,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:15,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:15,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 19:08:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:15,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 19:08:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:15,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-06 19:08:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:15,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:15,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-06 19:08:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:15,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:15,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:08:15,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:08:15,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491055626] [2022-04-06 19:08:15,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491055626] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:08:15,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798760492] [2022-04-06 19:08:15,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:08:15,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:08:15,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:08:15,331 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) [2022-04-06 19:08:15,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-04-06 19:08:16,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:08:16,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:08:16,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 1752 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 19:08:16,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:08:16,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:08:16,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:08:16,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798760492] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:16,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:08:16,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-04-06 19:08:16,721 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:08:16,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1562751215] [2022-04-06 19:08:16,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1562751215] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:16,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:08:16,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 19:08:16,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278405069] [2022-04-06 19:08:16,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:08:16,722 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 19:08:16,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:16,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 19:08:16,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-04-06 19:08:16,722 INFO L87 Difference]: Start difference. First operand 3783 states and 5324 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) [2022-04-06 19:08:17,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:08:17,928 INFO L93 Difference]: Finished difference Result 3996 states and 5580 transitions. [2022-04-06 19:08:17,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 19:08:17,929 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 [2022-04-06 19:08:17,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:08:17,938 INFO L225 Difference]: With dead ends: 3996 [2022-04-06 19:08:17,938 INFO L226 Difference]: Without dead ends: 3771 [2022-04-06 19:08:17,940 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 [2022-04-06 19:08:17,940 INFO L913 BasicCegarLoop]: 2512 mSDtfsCounter, 5 mSDsluCounter, 10026 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 12538 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:08:17,940 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 12538 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:08:17,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3771 states. [2022-04-06 19:08:19,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3771 to 3771. [2022-04-06 19:08:19,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3771 states, 2548 states have (on average 1.3390894819466248) internal successors, (3412), 2616 states have internal predecessors, (3412), 944 states have call successors, (944), 271 states have call predecessors, (944), 278 states have return successors, (950), 925 states have call predecessors, (950), 937 states have call successors, (950) [2022-04-06 19:08:19,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 5306 transitions. [2022-04-06 19:08:19,026 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 5306 transitions. Word has length 89 [2022-04-06 19:08:19,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:08:19,026 INFO L478 AbstractCegarLoop]: Abstraction has 3771 states and 5306 transitions. [2022-04-06 19:08:19,027 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) [2022-04-06 19:08:19,027 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 5306 transitions. [2022-04-06 19:08:19,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-04-06 19:08:19,028 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:08:19,028 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] [2022-04-06 19:08:19,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-04-06 19:08:19,253 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 [2022-04-06 19:08:19,254 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:08:19,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:08:19,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1359885864, now seen corresponding path program 1 times [2022-04-06 19:08:19,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:19,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [24194502] [2022-04-06 19:08:19,256 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:08:19,256 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:08:19,256 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:08:19,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1359885864, now seen corresponding path program 2 times [2022-04-06 19:08:19,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:08:19,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930542478] [2022-04-06 19:08:19,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:08:19,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:08:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:19,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:08:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:19,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:08:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:19,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:08:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:19,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:08:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:19,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:08:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:19,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:19,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:08:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:19,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:08:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:19,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:19,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:08:19,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:08:19,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930542478] [2022-04-06 19:08:19,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930542478] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:08:19,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603247257] [2022-04-06 19:08:19,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:08:19,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:08:19,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:08:19,660 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) [2022-04-06 19:08:19,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-04-06 19:08:20,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:08:20,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:08:20,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-06 19:08:20,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:08:21,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:08:21,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:08:21,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603247257] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:21,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:08:21,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-04-06 19:08:21,085 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:08:21,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [24194502] [2022-04-06 19:08:21,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [24194502] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:21,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:08:21,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:08:21,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714279151] [2022-04-06 19:08:21,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:08:21,085 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:08:21,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:21,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:08:21,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-04-06 19:08:21,086 INFO L87 Difference]: Start difference. First operand 3771 states and 5306 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) [2022-04-06 19:08:22,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:08:22,193 INFO L93 Difference]: Finished difference Result 3826 states and 5369 transitions. [2022-04-06 19:08:22,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:08:22,194 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 [2022-04-06 19:08:22,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:08:22,202 INFO L225 Difference]: With dead ends: 3826 [2022-04-06 19:08:22,202 INFO L226 Difference]: Without dead ends: 3773 [2022-04-06 19:08:22,203 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-04-06 19:08:22,203 INFO L913 BasicCegarLoop]: 2559 mSDtfsCounter, 61 mSDsluCounter, 2485 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 5044 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 [2022-04-06 19:08:22,203 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 5044 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 19:08:22,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2022-04-06 19:08:23,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 3770. [2022-04-06 19:08:23,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3770 states, 2547 states have (on average 1.3376521397722811) internal successors, (3407), 2615 states have internal predecessors, (3407), 944 states have call successors, (944), 271 states have call predecessors, (944), 278 states have return successors, (950), 925 states have call predecessors, (950), 937 states have call successors, (950) [2022-04-06 19:08:23,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3770 states to 3770 states and 5301 transitions. [2022-04-06 19:08:23,292 INFO L78 Accepts]: Start accepts. Automaton has 3770 states and 5301 transitions. Word has length 88 [2022-04-06 19:08:23,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:08:23,292 INFO L478 AbstractCegarLoop]: Abstraction has 3770 states and 5301 transitions. [2022-04-06 19:08:23,292 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) [2022-04-06 19:08:23,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3770 states and 5301 transitions. [2022-04-06 19:08:23,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-04-06 19:08:23,294 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:08:23,294 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] [2022-04-06 19:08:23,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-04-06 19:08:23,494 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 [2022-04-06 19:08:23,494 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:08:23,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:08:23,495 INFO L85 PathProgramCache]: Analyzing trace with hash -2048182127, now seen corresponding path program 1 times [2022-04-06 19:08:23,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:23,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [856299587] [2022-04-06 19:08:23,497 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:08:23,497 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:08:23,497 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:08:23,497 INFO L85 PathProgramCache]: Analyzing trace with hash -2048182127, now seen corresponding path program 2 times [2022-04-06 19:08:23,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:08:23,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115756282] [2022-04-06 19:08:23,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:08:23,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:08:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:23,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:08:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:23,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:08:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:23,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:08:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:23,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:08:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:23,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:08:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:23,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:23,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-06 19:08:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:23,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:08:23,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:08:23,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115756282] [2022-04-06 19:08:23,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115756282] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:08:23,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409736617] [2022-04-06 19:08:23,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:08:23,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:08:23,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:08:23,849 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) [2022-04-06 19:08:23,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-04-06 19:08:25,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:08:25,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:08:25,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 19:08:25,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:08:25,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:08:25,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:08:25,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409736617] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:25,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:08:25,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-04-06 19:08:25,289 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:08:25,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [856299587] [2022-04-06 19:08:25,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [856299587] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:25,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:08:25,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 19:08:25,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211447937] [2022-04-06 19:08:25,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:08:25,290 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 19:08:25,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:25,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 19:08:25,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-04-06 19:08:25,291 INFO L87 Difference]: Start difference. First operand 3770 states and 5301 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) [2022-04-06 19:08:26,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:08:26,457 INFO L93 Difference]: Finished difference Result 3829 states and 5372 transitions. [2022-04-06 19:08:26,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 19:08:26,458 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 [2022-04-06 19:08:26,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:08:26,466 INFO L225 Difference]: With dead ends: 3829 [2022-04-06 19:08:26,466 INFO L226 Difference]: Without dead ends: 3782 [2022-04-06 19:08:26,467 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-04-06 19:08:26,468 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 [2022-04-06 19:08:26,468 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] [2022-04-06 19:08:26,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3782 states. [2022-04-06 19:08:27,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3782 to 3771. [2022-04-06 19:08:27,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3771 states, 2548 states have (on average 1.3379120879120878) internal successors, (3409), 2616 states have internal predecessors, (3409), 944 states have call successors, (944), 271 states have call predecessors, (944), 278 states have return successors, (950), 925 states have call predecessors, (950), 937 states have call successors, (950) [2022-04-06 19:08:27,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 5303 transitions. [2022-04-06 19:08:27,570 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 5303 transitions. Word has length 87 [2022-04-06 19:08:27,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:08:27,571 INFO L478 AbstractCegarLoop]: Abstraction has 3771 states and 5303 transitions. [2022-04-06 19:08:27,571 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) [2022-04-06 19:08:27,571 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 5303 transitions. [2022-04-06 19:08:27,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-04-06 19:08:27,572 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:08:27,573 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] [2022-04-06 19:08:27,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-04-06 19:08:27,773 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 [2022-04-06 19:08:27,773 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:08:27,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:08:27,773 INFO L85 PathProgramCache]: Analyzing trace with hash -554188091, now seen corresponding path program 1 times [2022-04-06 19:08:27,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:27,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1749197898] [2022-04-06 19:08:27,775 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:08:27,776 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:08:27,776 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:08:27,776 INFO L85 PathProgramCache]: Analyzing trace with hash -554188091, now seen corresponding path program 2 times [2022-04-06 19:08:27,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:08:27,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679416217] [2022-04-06 19:08:27,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:08:27,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:08:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:27,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:08:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:28,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:08:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:28,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:08:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:28,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:08:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:28,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:28,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:28,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:08:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:28,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 19:08:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:28,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-06 19:08:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:28,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-06 19:08:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:28,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:28,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:08:28,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:08:28,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679416217] [2022-04-06 19:08:28,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679416217] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:08:28,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702294956] [2022-04-06 19:08:28,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:08:28,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:08:28,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:08:28,131 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) [2022-04-06 19:08:28,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-04-06 19:08:29,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:08:29,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:08:29,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-06 19:08:29,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:08:29,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:08:29,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:08:29,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702294956] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:29,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:08:29,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-04-06 19:08:29,765 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:08:29,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1749197898] [2022-04-06 19:08:29,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1749197898] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:29,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:08:29,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 19:08:29,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888048454] [2022-04-06 19:08:29,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:08:29,766 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 19:08:29,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:29,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 19:08:29,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-04-06 19:08:29,766 INFO L87 Difference]: Start difference. First operand 3771 states and 5303 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) [2022-04-06 19:08:33,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:08:33,521 INFO L93 Difference]: Finished difference Result 5070 states and 7199 transitions. [2022-04-06 19:08:33,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 19:08:33,521 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 [2022-04-06 19:08:33,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:08:33,531 INFO L225 Difference]: With dead ends: 5070 [2022-04-06 19:08:33,531 INFO L226 Difference]: Without dead ends: 5064 [2022-04-06 19:08:33,532 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 [2022-04-06 19:08:33,532 INFO L913 BasicCegarLoop]: 3988 mSDtfsCounter, 5658 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 1169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5662 SdHoareTripleChecker+Valid, 5566 SdHoareTripleChecker+Invalid, 2125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1169 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-04-06 19:08:33,532 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5662 Valid, 5566 Invalid, 2125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1169 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-04-06 19:08:33,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5064 states. [2022-04-06 19:08:34,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5064 to 3771. [2022-04-06 19:08:34,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3771 states, 2548 states have (on average 1.337519623233909) internal successors, (3408), 2616 states have internal predecessors, (3408), 944 states have call successors, (944), 271 states have call predecessors, (944), 278 states have return successors, (950), 925 states have call predecessors, (950), 937 states have call successors, (950) [2022-04-06 19:08:34,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 5302 transitions. [2022-04-06 19:08:34,750 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 5302 transitions. Word has length 89 [2022-04-06 19:08:34,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:08:34,750 INFO L478 AbstractCegarLoop]: Abstraction has 3771 states and 5302 transitions. [2022-04-06 19:08:34,750 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) [2022-04-06 19:08:34,750 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 5302 transitions. [2022-04-06 19:08:34,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-04-06 19:08:34,752 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:08:34,752 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] [2022-04-06 19:08:34,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-04-06 19:08:34,953 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 [2022-04-06 19:08:34,953 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:08:34,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:08:34,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1738187805, now seen corresponding path program 1 times [2022-04-06 19:08:34,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:34,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1560600578] [2022-04-06 19:08:34,955 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:08:34,955 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:08:34,956 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:08:34,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1738187805, now seen corresponding path program 2 times [2022-04-06 19:08:34,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:08:34,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306101879] [2022-04-06 19:08:34,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:08:34,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:08:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:35,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:08:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:35,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:08:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:35,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:08:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:35,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:08:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:35,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:08:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:35,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:35,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-06 19:08:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:35,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:08:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:35,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:08:35,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:08:35,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306101879] [2022-04-06 19:08:35,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306101879] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:08:35,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972209084] [2022-04-06 19:08:35,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:08:35,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:08:35,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:08:35,318 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) [2022-04-06 19:08:35,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-04-06 19:08:36,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:08:36,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:08:36,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 1794 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-06 19:08:36,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:08:36,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:08:36,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:08:36,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972209084] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:36,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:08:36,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-04-06 19:08:36,764 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:08:36,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1560600578] [2022-04-06 19:08:36,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1560600578] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:36,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:08:36,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:08:36,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341232383] [2022-04-06 19:08:36,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:08:36,765 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:08:36,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:36,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:08:36,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-06 19:08:36,765 INFO L87 Difference]: Start difference. First operand 3771 states and 5302 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) [2022-04-06 19:08:37,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:08:37,994 INFO L93 Difference]: Finished difference Result 5182 states and 7313 transitions. [2022-04-06 19:08:37,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:08:37,994 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 [2022-04-06 19:08:37,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:08:38,002 INFO L225 Difference]: With dead ends: 5182 [2022-04-06 19:08:38,002 INFO L226 Difference]: Without dead ends: 3734 [2022-04-06 19:08:38,005 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-06 19:08:38,006 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 [2022-04-06 19:08:38,006 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] [2022-04-06 19:08:38,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3734 states. [2022-04-06 19:08:39,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3734 to 3734. [2022-04-06 19:08:39,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3734 states, 2528 states have (on average 1.3370253164556962) internal successors, (3380), 2596 states have internal predecessors, (3380), 930 states have call successors, (930), 268 states have call predecessors, (930), 275 states have return successors, (936), 911 states have call predecessors, (936), 923 states have call successors, (936) [2022-04-06 19:08:39,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 5246 transitions. [2022-04-06 19:08:39,248 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 5246 transitions. Word has length 89 [2022-04-06 19:08:39,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:08:39,249 INFO L478 AbstractCegarLoop]: Abstraction has 3734 states and 5246 transitions. [2022-04-06 19:08:39,249 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) [2022-04-06 19:08:39,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 5246 transitions. [2022-04-06 19:08:39,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-04-06 19:08:39,250 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:08:39,251 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:08:39,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-04-06 19:08:39,451 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 [2022-04-06 19:08:39,451 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:08:39,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:08:39,451 INFO L85 PathProgramCache]: Analyzing trace with hash -899188565, now seen corresponding path program 1 times [2022-04-06 19:08:39,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:39,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [534013228] [2022-04-06 19:08:39,454 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:08:39,454 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:08:39,454 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:08:39,454 INFO L85 PathProgramCache]: Analyzing trace with hash -899188565, now seen corresponding path program 2 times [2022-04-06 19:08:39,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:08:39,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258475360] [2022-04-06 19:08:39,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:08:39,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:08:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:39,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:08:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:39,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:08:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:39,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:08:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:39,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:08:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:39,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:39,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:39,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:08:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:39,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 19:08:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:39,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-06 19:08:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:39,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-06 19:08:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:39,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:39,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:08:39,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:08:39,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258475360] [2022-04-06 19:08:39,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258475360] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:08:39,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913377118] [2022-04-06 19:08:39,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:08:39,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:08:39,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:08:39,818 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) [2022-04-06 19:08:39,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-04-06 19:08:41,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:08:41,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:08:41,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 1779 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-06 19:08:41,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:08:41,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:08:41,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:08:41,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913377118] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:41,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:08:41,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2022-04-06 19:08:41,324 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:08:41,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [534013228] [2022-04-06 19:08:41,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [534013228] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:41,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:08:41,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 19:08:41,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760113534] [2022-04-06 19:08:41,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:08:41,324 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 19:08:41,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:41,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 19:08:41,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-04-06 19:08:41,325 INFO L87 Difference]: Start difference. First operand 3734 states and 5246 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) [2022-04-06 19:08:42,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:08:42,695 INFO L93 Difference]: Finished difference Result 3826 states and 5352 transitions. [2022-04-06 19:08:42,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 19:08:42,696 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 [2022-04-06 19:08:42,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:08:42,705 INFO L225 Difference]: With dead ends: 3826 [2022-04-06 19:08:42,705 INFO L226 Difference]: Without dead ends: 3766 [2022-04-06 19:08:42,706 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 [2022-04-06 19:08:42,707 INFO L913 BasicCegarLoop]: 2465 mSDtfsCounter, 48 mSDsluCounter, 17190 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:08:42,707 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 19655 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:08:42,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3766 states. [2022-04-06 19:08:43,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3766 to 3755. [2022-04-06 19:08:43,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 2545 states have (on average 1.3355599214145384) internal successors, (3399), 2614 states have internal predecessors, (3399), 932 states have call successors, (932), 268 states have call predecessors, (932), 277 states have return successors, (940), 915 states have call predecessors, (940), 925 states have call successors, (940) [2022-04-06 19:08:43,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5271 transitions. [2022-04-06 19:08:43,932 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5271 transitions. Word has length 90 [2022-04-06 19:08:43,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:08:43,932 INFO L478 AbstractCegarLoop]: Abstraction has 3755 states and 5271 transitions. [2022-04-06 19:08:43,932 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) [2022-04-06 19:08:43,932 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5271 transitions. [2022-04-06 19:08:43,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-04-06 19:08:43,934 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:08:43,934 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] [2022-04-06 19:08:43,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-04-06 19:08:44,134 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 [2022-04-06 19:08:44,135 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:08:44,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:08:44,135 INFO L85 PathProgramCache]: Analyzing trace with hash -898911735, now seen corresponding path program 1 times [2022-04-06 19:08:44,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:44,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [700857869] [2022-04-06 19:08:44,137 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:08:44,137 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:08:44,137 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:08:44,137 INFO L85 PathProgramCache]: Analyzing trace with hash -898911735, now seen corresponding path program 2 times [2022-04-06 19:08:44,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:08:44,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017651172] [2022-04-06 19:08:44,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:08:44,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:08:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:44,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:08:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:44,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:08:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:44,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:08:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:44,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:08:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:44,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:44,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:44,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:08:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:44,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 19:08:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:44,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-06 19:08:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:44,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-06 19:08:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:44,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:44,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:08:44,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:08:44,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017651172] [2022-04-06 19:08:44,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017651172] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:08:44,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370996031] [2022-04-06 19:08:44,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:08:44,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:08:44,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:08:44,491 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) [2022-04-06 19:08:44,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-04-06 19:08:45,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:08:45,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:08:45,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 15 conjunts are in the unsatisfiable core [2022-04-06 19:08:45,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:08:45,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:08:45,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:08:45,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370996031] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:45,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:08:45,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2022-04-06 19:08:45,993 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:08:45,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [700857869] [2022-04-06 19:08:45,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [700857869] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:45,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:08:45,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 19:08:45,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833969935] [2022-04-06 19:08:45,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:08:45,993 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 19:08:45,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:45,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 19:08:45,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-04-06 19:08:45,994 INFO L87 Difference]: Start difference. First operand 3755 states and 5271 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) [2022-04-06 19:08:47,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:08:47,369 INFO L93 Difference]: Finished difference Result 3778 states and 5297 transitions. [2022-04-06 19:08:47,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 19:08:47,369 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 [2022-04-06 19:08:47,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:08:47,378 INFO L225 Difference]: With dead ends: 3778 [2022-04-06 19:08:47,378 INFO L226 Difference]: Without dead ends: 3752 [2022-04-06 19:08:47,379 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-04-06 19:08:47,380 INFO L913 BasicCegarLoop]: 2471 mSDtfsCounter, 7 mSDsluCounter, 17141 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 19612 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 19:08:47,380 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 19612 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 19:08:47,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2022-04-06 19:08:48,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 3748. [2022-04-06 19:08:48,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3748 states, 2539 states have (on average 1.3355651831429696) internal successors, (3391), 2608 states have internal predecessors, (3391), 932 states have call successors, (932), 268 states have call predecessors, (932), 276 states have return successors, (939), 914 states have call predecessors, (939), 925 states have call successors, (939) [2022-04-06 19:08:48,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3748 states to 3748 states and 5262 transitions. [2022-04-06 19:08:48,603 INFO L78 Accepts]: Start accepts. Automaton has 3748 states and 5262 transitions. Word has length 90 [2022-04-06 19:08:48,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:08:48,604 INFO L478 AbstractCegarLoop]: Abstraction has 3748 states and 5262 transitions. [2022-04-06 19:08:48,604 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) [2022-04-06 19:08:48,604 INFO L276 IsEmpty]: Start isEmpty. Operand 3748 states and 5262 transitions. [2022-04-06 19:08:48,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-04-06 19:08:48,606 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:08:48,606 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] [2022-04-06 19:08:48,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-04-06 19:08:48,806 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 [2022-04-06 19:08:48,806 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:08:48,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:08:48,807 INFO L85 PathProgramCache]: Analyzing trace with hash 695765407, now seen corresponding path program 1 times [2022-04-06 19:08:48,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:48,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [321728831] [2022-04-06 19:08:48,809 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:08:48,809 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:08:48,809 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:08:48,809 INFO L85 PathProgramCache]: Analyzing trace with hash 695765407, now seen corresponding path program 2 times [2022-04-06 19:08:48,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:08:48,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375644273] [2022-04-06 19:08:48,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:08:48,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:08:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:49,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:08:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:49,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:08:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:49,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:08:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:49,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:08:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:49,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:08:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:49,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:49,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-06 19:08:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:49,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:08:49,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:08:49,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375644273] [2022-04-06 19:08:49,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375644273] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:08:49,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478732164] [2022-04-06 19:08:49,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:08:49,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:08:49,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:08:49,151 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) [2022-04-06 19:08:49,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-04-06 19:08:50,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:08:50,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:08:50,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 19:08:50,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:08:50,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:08:50,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:08:50,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478732164] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:50,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:08:50,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-04-06 19:08:50,653 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:08:50,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [321728831] [2022-04-06 19:08:50,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [321728831] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:50,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:08:50,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 19:08:50,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279440994] [2022-04-06 19:08:50,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:08:50,653 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 19:08:50,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:50,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 19:08:50,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-04-06 19:08:50,654 INFO L87 Difference]: Start difference. First operand 3748 states and 5262 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) [2022-04-06 19:08:51,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:08:51,928 INFO L93 Difference]: Finished difference Result 3811 states and 5336 transitions. [2022-04-06 19:08:51,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 19:08:51,928 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 [2022-04-06 19:08:51,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:08:51,935 INFO L225 Difference]: With dead ends: 3811 [2022-04-06 19:08:51,936 INFO L226 Difference]: Without dead ends: 3764 [2022-04-06 19:08:51,936 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 [2022-04-06 19:08:51,937 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 [2022-04-06 19:08:51,937 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] [2022-04-06 19:08:51,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2022-04-06 19:08:53,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 3752. [2022-04-06 19:08:53,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3752 states, 2542 states have (on average 1.3351691581431944) internal successors, (3394), 2611 states have internal predecessors, (3394), 932 states have call successors, (932), 268 states have call predecessors, (932), 277 states have return successors, (940), 915 states have call predecessors, (940), 925 states have call successors, (940) [2022-04-06 19:08:53,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3752 states to 3752 states and 5266 transitions. [2022-04-06 19:08:53,155 INFO L78 Accepts]: Start accepts. Automaton has 3752 states and 5266 transitions. Word has length 89 [2022-04-06 19:08:53,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:08:53,155 INFO L478 AbstractCegarLoop]: Abstraction has 3752 states and 5266 transitions. [2022-04-06 19:08:53,155 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) [2022-04-06 19:08:53,155 INFO L276 IsEmpty]: Start isEmpty. Operand 3752 states and 5266 transitions. [2022-04-06 19:08:53,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-04-06 19:08:53,157 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:08:53,157 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] [2022-04-06 19:08:53,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-04-06 19:08:53,358 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 [2022-04-06 19:08:53,358 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:08:53,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:08:53,358 INFO L85 PathProgramCache]: Analyzing trace with hash -2023692261, now seen corresponding path program 1 times [2022-04-06 19:08:53,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:53,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [133592876] [2022-04-06 19:08:53,360 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:08:53,360 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:08:53,360 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:08:53,361 INFO L85 PathProgramCache]: Analyzing trace with hash -2023692261, now seen corresponding path program 2 times [2022-04-06 19:08:53,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:08:53,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73594716] [2022-04-06 19:08:53,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:08:53,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:08:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:53,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:08:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:53,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:08:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:53,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:08:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:53,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:08:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:53,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:08:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:53,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:53,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-06 19:08:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:53,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-06 19:08:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:53,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-06 19:08:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:53,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:08:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:53,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:08:53,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:08:53,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73594716] [2022-04-06 19:08:53,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73594716] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:08:53,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133514965] [2022-04-06 19:08:53,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:08:53,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:08:53,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:08:53,742 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) [2022-04-06 19:08:53,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-04-06 19:08:55,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:08:55,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:08:55,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 2295 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-06 19:08:55,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:08:55,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:08:55,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:08:55,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133514965] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:55,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:08:55,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-04-06 19:08:55,299 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:08:55,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [133592876] [2022-04-06 19:08:55,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [133592876] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:08:55,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:08:55,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:08:55,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842769776] [2022-04-06 19:08:55,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:08:55,300 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:08:55,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:55,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:08:55,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-04-06 19:08:55,300 INFO L87 Difference]: Start difference. First operand 3752 states and 5266 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) [2022-04-06 19:08:56,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:08:56,976 INFO L93 Difference]: Finished difference Result 5011 states and 7111 transitions. [2022-04-06 19:08:56,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:08:56,977 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 [2022-04-06 19:08:56,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:08:56,988 INFO L225 Difference]: With dead ends: 5011 [2022-04-06 19:08:56,988 INFO L226 Difference]: Without dead ends: 5008 [2022-04-06 19:08:56,990 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 [2022-04-06 19:08:56,990 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 [2022-04-06 19:08:56,990 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] [2022-04-06 19:08:56,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5008 states. [2022-04-06 19:08:58,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5008 to 3756. [2022-04-06 19:08:58,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3756 states, 2546 states have (on average 1.335428122545169) internal successors, (3400), 2615 states have internal predecessors, (3400), 932 states have call successors, (932), 268 states have call predecessors, (932), 277 states have return successors, (940), 915 states have call predecessors, (940), 925 states have call successors, (940) [2022-04-06 19:08:58,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3756 states to 3756 states and 5272 transitions. [2022-04-06 19:08:58,356 INFO L78 Accepts]: Start accepts. Automaton has 3756 states and 5272 transitions. Word has length 97 [2022-04-06 19:08:58,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:08:58,356 INFO L478 AbstractCegarLoop]: Abstraction has 3756 states and 5272 transitions. [2022-04-06 19:08:58,356 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) [2022-04-06 19:08:58,356 INFO L276 IsEmpty]: Start isEmpty. Operand 3756 states and 5272 transitions. [2022-04-06 19:08:58,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-04-06 19:08:58,358 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:08:58,358 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] [2022-04-06 19:08:58,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-04-06 19:08:58,559 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 [2022-04-06 19:08:58,559 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:08:58,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:08:58,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2128490856, now seen corresponding path program 1 times [2022-04-06 19:08:58,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:08:58,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [145732964] [2022-04-06 19:08:58,561 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:08:58,561 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:08:58,562 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:08:58,562 INFO L85 PathProgramCache]: Analyzing trace with hash 2128490856, now seen corresponding path program 2 times [2022-04-06 19:08:58,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:08:58,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514065247] [2022-04-06 19:08:58,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:08:58,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:08:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:58,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:08:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:58,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:08:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:58,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:08:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:58,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:08:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:58,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:58,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:58,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:08:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:58,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 19:08:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:58,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-06 19:08:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:58,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-06 19:08:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:58,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:08:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:08:58,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:08:58,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:08:58,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514065247] [2022-04-06 19:08:58,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514065247] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:08:58,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187166926] [2022-04-06 19:08:58,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:08:58,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:08:58,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:08:58,919 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) [2022-04-06 19:08:58,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-04-06 19:09:00,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:09:00,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:09:00,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 1779 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-06 19:09:00,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:09:00,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:09:00,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:09:00,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187166926] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:09:00,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:09:00,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-04-06 19:09:00,657 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:09:00,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [145732964] [2022-04-06 19:09:00,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [145732964] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:09:00,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:09:00,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 19:09:00,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532377306] [2022-04-06 19:09:00,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:09:00,657 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 19:09:00,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:09:00,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 19:09:00,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-04-06 19:09:00,658 INFO L87 Difference]: Start difference. First operand 3756 states and 5272 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-04-06 19:09:04,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:09:04,965 INFO L93 Difference]: Finished difference Result 5038 states and 7144 transitions. [2022-04-06 19:09:04,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 19:09:04,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 91 [2022-04-06 19:09:04,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:09:04,976 INFO L225 Difference]: With dead ends: 5038 [2022-04-06 19:09:04,976 INFO L226 Difference]: Without dead ends: 5008 [2022-04-06 19:09:04,977 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-04-06 19:09:04,977 INFO L913 BasicCegarLoop]: 4219 mSDtfsCounter, 4283 mSDsluCounter, 3107 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4287 SdHoareTripleChecker+Valid, 7326 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-04-06 19:09:04,978 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4287 Valid, 7326 Invalid, 2217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 1859 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-04-06 19:09:04,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5008 states. [2022-04-06 19:09:06,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5008 to 3730. [2022-04-06 19:09:06,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 2525 states have (on average 1.3366336633663367) internal successors, (3375), 2593 states have internal predecessors, (3375), 929 states have call successors, (929), 267 states have call predecessors, (929), 275 states have return successors, (936), 911 states have call predecessors, (936), 922 states have call successors, (936) [2022-04-06 19:09:06,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 5240 transitions. [2022-04-06 19:09:06,359 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 5240 transitions. Word has length 91 [2022-04-06 19:09:06,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:09:06,359 INFO L478 AbstractCegarLoop]: Abstraction has 3730 states and 5240 transitions. [2022-04-06 19:09:06,359 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-04-06 19:09:06,359 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 5240 transitions. [2022-04-06 19:09:06,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-04-06 19:09:06,361 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:09:06,361 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] [2022-04-06 19:09:06,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-04-06 19:09:06,561 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 [2022-04-06 19:09:06,562 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:09:06,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:09:06,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1760379551, now seen corresponding path program 1 times [2022-04-06 19:09:06,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:09:06,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [504891188] [2022-04-06 19:09:06,564 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:09:06,564 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:09:06,564 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:09:06,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1760379551, now seen corresponding path program 2 times [2022-04-06 19:09:06,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:09:06,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733655657] [2022-04-06 19:09:06,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:09:06,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:09:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:06,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:09:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:06,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:09:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:06,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:09:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:06,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:09:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:06,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:09:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:06,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:06,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-06 19:09:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:06,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-06 19:09:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:06,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-06 19:09:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:06,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:09:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:06,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:06,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:09:06,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:09:06,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733655657] [2022-04-06 19:09:06,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733655657] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:09:06,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215416598] [2022-04-06 19:09:06,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:09:06,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:09:06,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:09:06,920 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) [2022-04-06 19:09:06,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-04-06 19:09:08,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:09:08,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:09:08,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 2172 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-06 19:09:08,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:09:08,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:09:08,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:09:08,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215416598] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:09:08,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:09:08,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-04-06 19:09:08,753 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:09:08,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [504891188] [2022-04-06 19:09:08,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [504891188] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:09:08,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:09:08,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 19:09:08,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577559101] [2022-04-06 19:09:08,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:09:08,754 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 19:09:08,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:09:08,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 19:09:08,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-04-06 19:09:08,754 INFO L87 Difference]: Start difference. First operand 3730 states and 5240 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2022-04-06 19:09:12,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:09:12,890 INFO L93 Difference]: Finished difference Result 7580 states and 10855 transitions. [2022-04-06 19:09:12,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 19:09:12,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 99 [2022-04-06 19:09:12,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:09:12,903 INFO L225 Difference]: With dead ends: 7580 [2022-04-06 19:09:12,903 INFO L226 Difference]: Without dead ends: 5004 [2022-04-06 19:09:12,910 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-04-06 19:09:12,910 INFO L913 BasicCegarLoop]: 4212 mSDtfsCounter, 5321 mSDsluCounter, 1561 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 700 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5321 SdHoareTripleChecker+Valid, 5773 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 700 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-04-06 19:09:12,910 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5321 Valid, 5773 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [700 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-04-06 19:09:12,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5004 states. [2022-04-06 19:09:14,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5004 to 3744. [2022-04-06 19:09:14,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3744 states, 2536 states have (on average 1.33596214511041) internal successors, (3388), 2605 states have internal predecessors, (3388), 930 states have call successors, (930), 268 states have call predecessors, (930), 277 states have return successors, (939), 912 states have call predecessors, (939), 923 states have call successors, (939) [2022-04-06 19:09:14,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 5257 transitions. [2022-04-06 19:09:14,375 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 5257 transitions. Word has length 99 [2022-04-06 19:09:14,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:09:14,375 INFO L478 AbstractCegarLoop]: Abstraction has 3744 states and 5257 transitions. [2022-04-06 19:09:14,375 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2022-04-06 19:09:14,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 5257 transitions. [2022-04-06 19:09:14,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-04-06 19:09:14,377 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:09:14,377 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] [2022-04-06 19:09:14,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-04-06 19:09:14,577 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 [2022-04-06 19:09:14,578 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:09:14,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:09:14,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1270672595, now seen corresponding path program 1 times [2022-04-06 19:09:14,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:09:14,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1614226298] [2022-04-06 19:09:14,580 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:09:14,581 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:09:14,581 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:09:14,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1270672595, now seen corresponding path program 2 times [2022-04-06 19:09:14,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:09:14,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498359845] [2022-04-06 19:09:14,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:09:14,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:09:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:14,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:09:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:14,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:09:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:14,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:09:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:14,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:09:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:14,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:09:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:14,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:14,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-06 19:09:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:14,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:09:14,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:09:14,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498359845] [2022-04-06 19:09:14,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498359845] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:09:14,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877444909] [2022-04-06 19:09:14,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:09:14,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:09:14,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:09:14,941 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) [2022-04-06 19:09:14,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-04-06 19:09:16,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:09:16,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:09:16,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-06 19:09:16,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:09:16,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:09:16,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:09:16,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877444909] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:09:16,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:09:16,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-04-06 19:09:16,500 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:09:16,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1614226298] [2022-04-06 19:09:16,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1614226298] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:09:16,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:09:16,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:09:16,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636964870] [2022-04-06 19:09:16,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:09:16,501 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:09:16,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:09:16,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:09:16,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-06 19:09:16,501 INFO L87 Difference]: Start difference. First operand 3744 states and 5257 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) [2022-04-06 19:09:17,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:09:17,935 INFO L93 Difference]: Finished difference Result 3790 states and 5311 transitions. [2022-04-06 19:09:17,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:09:17,935 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 [2022-04-06 19:09:17,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:09:17,942 INFO L225 Difference]: With dead ends: 3790 [2022-04-06 19:09:17,943 INFO L226 Difference]: Without dead ends: 3745 [2022-04-06 19:09:17,943 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-06 19:09:17,944 INFO L913 BasicCegarLoop]: 2469 mSDtfsCounter, 2 mSDsluCounter, 2453 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4922 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 19:09:17,944 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 4922 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 19:09:17,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3745 states. [2022-04-06 19:09:19,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3745 to 3744. [2022-04-06 19:09:19,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3744 states, 2536 states have (on average 1.33596214511041) internal successors, (3388), 2605 states have internal predecessors, (3388), 930 states have call successors, (930), 268 states have call predecessors, (930), 277 states have return successors, (939), 912 states have call predecessors, (939), 923 states have call successors, (939) [2022-04-06 19:09:19,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 5257 transitions. [2022-04-06 19:09:19,288 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 5257 transitions. Word has length 90 [2022-04-06 19:09:19,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:09:19,288 INFO L478 AbstractCegarLoop]: Abstraction has 3744 states and 5257 transitions. [2022-04-06 19:09:19,288 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) [2022-04-06 19:09:19,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 5257 transitions. [2022-04-06 19:09:19,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-04-06 19:09:19,290 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:09:19,290 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] [2022-04-06 19:09:19,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-04-06 19:09:19,491 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 [2022-04-06 19:09:19,491 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:09:19,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:09:19,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1494471512, now seen corresponding path program 1 times [2022-04-06 19:09:19,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:09:19,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1639063961] [2022-04-06 19:09:19,493 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:09:19,493 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:09:19,493 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:09:19,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1494471512, now seen corresponding path program 2 times [2022-04-06 19:09:19,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:09:19,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744114068] [2022-04-06 19:09:19,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:09:19,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:09:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:19,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:09:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:19,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:09:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:19,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:09:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:19,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:09:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:19,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:19,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:09:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:19,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:19,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-06 19:09:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:19,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:19,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:09:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:19,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 19:09:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:19,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:19,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:09:19,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:09:19,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744114068] [2022-04-06 19:09:19,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744114068] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:09:19,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490881755] [2022-04-06 19:09:19,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:09:19,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:09:19,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:09:19,919 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) [2022-04-06 19:09:19,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-04-06 19:09:21,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:09:21,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:09:21,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 27 conjunts are in the unsatisfiable core [2022-04-06 19:09:21,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:09:21,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:09:21,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:09:21,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490881755] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:09:21,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:09:21,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 23 [2022-04-06 19:09:21,748 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:09:21,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1639063961] [2022-04-06 19:09:21,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1639063961] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:09:21,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:09:21,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 19:09:21,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961669249] [2022-04-06 19:09:21,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:09:21,748 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 19:09:21,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:09:21,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 19:09:21,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2022-04-06 19:09:21,749 INFO L87 Difference]: Start difference. First operand 3744 states and 5257 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 10 states have internal predecessors, (77), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:09:23,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:09:23,491 INFO L93 Difference]: Finished difference Result 3761 states and 5275 transitions. [2022-04-06 19:09:23,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 19:09:23,492 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 10 states have internal predecessors, (77), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) Word has length 103 [2022-04-06 19:09:23,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:09:23,500 INFO L225 Difference]: With dead ends: 3761 [2022-04-06 19:09:23,500 INFO L226 Difference]: Without dead ends: 3737 [2022-04-06 19:09:23,501 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2022-04-06 19:09:23,502 INFO L913 BasicCegarLoop]: 2474 mSDtfsCounter, 7 mSDsluCounter, 29295 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 31769 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 19:09:23,502 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 31769 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 19:09:23,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2022-04-06 19:09:24,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3737. [2022-04-06 19:09:24,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3737 states, 2532 states have (on average 1.3360979462875198) internal successors, (3383), 2601 states have internal predecessors, (3383), 928 states have call successors, (928), 267 states have call predecessors, (928), 276 states have return successors, (937), 910 states have call predecessors, (937), 921 states have call successors, (937) [2022-04-06 19:09:24,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 5248 transitions. [2022-04-06 19:09:24,906 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 5248 transitions. Word has length 103 [2022-04-06 19:09:24,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:09:24,906 INFO L478 AbstractCegarLoop]: Abstraction has 3737 states and 5248 transitions. [2022-04-06 19:09:24,906 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 10 states have internal predecessors, (77), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:09:24,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 5248 transitions. [2022-04-06 19:09:24,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-04-06 19:09:24,908 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:09:24,908 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] [2022-04-06 19:09:24,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-04-06 19:09:25,108 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 [2022-04-06 19:09:25,109 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:09:25,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:09:25,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1608832473, now seen corresponding path program 1 times [2022-04-06 19:09:25,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:09:25,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [855917075] [2022-04-06 19:09:25,111 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:09:25,111 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:09:25,111 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:09:25,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1608832473, now seen corresponding path program 2 times [2022-04-06 19:09:25,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:09:25,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876213599] [2022-04-06 19:09:25,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:09:25,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:09:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:25,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:09:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:25,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:09:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:25,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:09:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:25,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:09:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:25,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:25,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:09:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:25,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:25,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:09:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:25,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:09:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:25,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:09:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:25,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 19:09:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:25,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:25,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:09:25,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:09:25,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876213599] [2022-04-06 19:09:25,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876213599] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:09:25,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339150444] [2022-04-06 19:09:25,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:09:25,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:09:25,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:09:25,542 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) [2022-04-06 19:09:25,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-04-06 19:09:27,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:09:27,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:09:27,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 1978 conjuncts, 27 conjunts are in the unsatisfiable core [2022-04-06 19:09:27,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:09:27,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:09:27,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:09:27,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339150444] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:09:27,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:09:27,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 23 [2022-04-06 19:09:27,302 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:09:27,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [855917075] [2022-04-06 19:09:27,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [855917075] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:09:27,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:09:27,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 19:09:27,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999744246] [2022-04-06 19:09:27,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:09:27,302 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 19:09:27,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:09:27,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 19:09:27,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2022-04-06 19:09:27,303 INFO L87 Difference]: Start difference. First operand 3737 states and 5248 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 10 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:09:29,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:09:29,010 INFO L93 Difference]: Finished difference Result 3754 states and 5266 transitions. [2022-04-06 19:09:29,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 19:09:29,011 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 10 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-04-06 19:09:29,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:09:29,018 INFO L225 Difference]: With dead ends: 3754 [2022-04-06 19:09:29,018 INFO L226 Difference]: Without dead ends: 3690 [2022-04-06 19:09:29,019 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2022-04-06 19:09:29,019 INFO L913 BasicCegarLoop]: 2465 mSDtfsCounter, 7 mSDsluCounter, 29200 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 31665 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 19:09:29,019 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 31665 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 19:09:29,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2022-04-06 19:09:30,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 3690. [2022-04-06 19:09:30,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3690 states, 2494 states have (on average 1.3340016038492382) internal successors, (3327), 2563 states have internal predecessors, (3327), 923 states have call successors, (923), 263 states have call predecessors, (923), 272 states have return successors, (932), 905 states have call predecessors, (932), 916 states have call successors, (932) [2022-04-06 19:09:30,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3690 states to 3690 states and 5182 transitions. [2022-04-06 19:09:30,370 INFO L78 Accepts]: Start accepts. Automaton has 3690 states and 5182 transitions. Word has length 102 [2022-04-06 19:09:30,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:09:30,370 INFO L478 AbstractCegarLoop]: Abstraction has 3690 states and 5182 transitions. [2022-04-06 19:09:30,370 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 10 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:09:30,370 INFO L276 IsEmpty]: Start isEmpty. Operand 3690 states and 5182 transitions. [2022-04-06 19:09:30,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-04-06 19:09:30,372 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:09:30,372 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] [2022-04-06 19:09:30,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-04-06 19:09:30,573 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 [2022-04-06 19:09:30,573 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:09:30,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:09:30,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1654728766, now seen corresponding path program 1 times [2022-04-06 19:09:30,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:09:30,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1710745430] [2022-04-06 19:09:30,576 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:09:30,576 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:09:30,576 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:09:30,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1654728766, now seen corresponding path program 2 times [2022-04-06 19:09:30,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:09:30,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2806690] [2022-04-06 19:09:30,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:09:30,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:09:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:30,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:09:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:30,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:09:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:30,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:09:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:30,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:09:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:30,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:30,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:09:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:30,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:30,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 19:09:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:30,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:31,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:09:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:31,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 19:09:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:31,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:31,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:09:31,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:09:31,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2806690] [2022-04-06 19:09:31,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2806690] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:09:31,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628382304] [2022-04-06 19:09:31,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:09:31,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:09:31,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:09:31,021 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) [2022-04-06 19:09:31,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-04-06 19:09:32,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:09:32,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:09:32,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 1956 conjuncts, 27 conjunts are in the unsatisfiable core [2022-04-06 19:09:32,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:09:32,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:09:32,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:09:32,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628382304] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:09:32,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:09:32,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [10] total 22 [2022-04-06 19:09:32,787 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:09:32,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1710745430] [2022-04-06 19:09:32,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1710745430] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:09:32,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:09:32,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 19:09:32,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163373312] [2022-04-06 19:09:32,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:09:32,788 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 19:09:32,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:09:32,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 19:09:32,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-04-06 19:09:32,788 INFO L87 Difference]: Start difference. First operand 3690 states and 5182 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 10 states have internal predecessors, (69), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:09:34,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:09:34,466 INFO L93 Difference]: Finished difference Result 3707 states and 5200 transitions. [2022-04-06 19:09:34,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 19:09:34,466 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 10 states have internal predecessors, (69), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) Word has length 95 [2022-04-06 19:09:34,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:09:34,474 INFO L225 Difference]: With dead ends: 3707 [2022-04-06 19:09:34,474 INFO L226 Difference]: Without dead ends: 3688 [2022-04-06 19:09:34,475 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2022-04-06 19:09:34,475 INFO L913 BasicCegarLoop]: 2397 mSDtfsCounter, 7 mSDsluCounter, 28392 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30789 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 19:09:34,475 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 30789 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 19:09:34,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3688 states. [2022-04-06 19:09:35,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3688 to 3688. [2022-04-06 19:09:35,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 2493 states have (on average 1.3337344564781388) internal successors, (3325), 2562 states have internal predecessors, (3325), 922 states have call successors, (922), 263 states have call predecessors, (922), 272 states have return successors, (931), 904 states have call predecessors, (931), 915 states have call successors, (931) [2022-04-06 19:09:35,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 5178 transitions. [2022-04-06 19:09:35,845 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 5178 transitions. Word has length 95 [2022-04-06 19:09:35,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:09:35,845 INFO L478 AbstractCegarLoop]: Abstraction has 3688 states and 5178 transitions. [2022-04-06 19:09:35,845 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 10 states have internal predecessors, (69), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:09:35,845 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 5178 transitions. [2022-04-06 19:09:35,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-04-06 19:09:35,847 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:09:35,847 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] [2022-04-06 19:09:35,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-04-06 19:09:36,047 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 [2022-04-06 19:09:36,047 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:09:36,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:09:36,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1012184443, now seen corresponding path program 1 times [2022-04-06 19:09:36,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:09:36,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [35901732] [2022-04-06 19:09:36,050 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:09:36,050 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:09:36,050 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:09:36,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1012184443, now seen corresponding path program 2 times [2022-04-06 19:09:36,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:09:36,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176497322] [2022-04-06 19:09:36,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:09:36,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:09:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:36,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:09:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:36,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:09:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:36,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:09:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:36,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:09:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:36,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:36,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:09:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:36,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:36,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:09:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:36,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:36,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:09:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:36,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 19:09:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:36,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:36,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:09:36,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:09:36,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176497322] [2022-04-06 19:09:36,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176497322] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:09:36,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131786114] [2022-04-06 19:09:36,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:09:36,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:09:36,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:09:36,474 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) [2022-04-06 19:09:36,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-04-06 19:09:38,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:09:38,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:09:38,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 2004 conjuncts, 27 conjunts are in the unsatisfiable core [2022-04-06 19:09:38,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:09:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:09:38,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:09:38,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131786114] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:09:38,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:09:38,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 23 [2022-04-06 19:09:38,271 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:09:38,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [35901732] [2022-04-06 19:09:38,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [35901732] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:09:38,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:09:38,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 19:09:38,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483140718] [2022-04-06 19:09:38,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:09:38,271 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 19:09:38,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:09:38,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 19:09:38,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2022-04-06 19:09:38,272 INFO L87 Difference]: Start difference. First operand 3688 states and 5178 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 10 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:09:40,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:09:40,053 INFO L93 Difference]: Finished difference Result 3705 states and 5196 transitions. [2022-04-06 19:09:40,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 19:09:40,054 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 10 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-04-06 19:09:40,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:09:40,061 INFO L225 Difference]: With dead ends: 3705 [2022-04-06 19:09:40,062 INFO L226 Difference]: Without dead ends: 3681 [2022-04-06 19:09:40,063 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2022-04-06 19:09:40,063 INFO L913 BasicCegarLoop]: 2397 mSDtfsCounter, 7 mSDsluCounter, 28398 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30795 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 19:09:40,063 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 30795 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 19:09:40,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2022-04-06 19:09:41,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 3681. [2022-04-06 19:09:41,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3681 states, 2489 states have (on average 1.333869023704299) internal successors, (3320), 2558 states have internal predecessors, (3320), 920 states have call successors, (920), 262 states have call predecessors, (920), 271 states have return successors, (929), 902 states have call predecessors, (929), 913 states have call successors, (929) [2022-04-06 19:09:41,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 5169 transitions. [2022-04-06 19:09:41,507 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 5169 transitions. Word has length 102 [2022-04-06 19:09:41,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:09:41,507 INFO L478 AbstractCegarLoop]: Abstraction has 3681 states and 5169 transitions. [2022-04-06 19:09:41,507 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 10 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:09:41,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 5169 transitions. [2022-04-06 19:09:41,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-04-06 19:09:41,509 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:09:41,509 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] [2022-04-06 19:09:41,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-04-06 19:09:41,711 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 [2022-04-06 19:09:41,712 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:09:41,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:09:41,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1579773890, now seen corresponding path program 1 times [2022-04-06 19:09:41,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:09:41,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [81962405] [2022-04-06 19:09:41,714 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:09:41,714 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:09:41,714 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:09:41,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1579773890, now seen corresponding path program 2 times [2022-04-06 19:09:41,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:09:41,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044025628] [2022-04-06 19:09:41,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:09:41,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:09:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:41,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:09:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:41,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:09:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:41,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:09:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:42,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:09:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:42,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:42,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:09:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:42,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:42,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-06 19:09:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:42,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:09:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:42,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:09:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:42,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 19:09:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:42,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:42,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:09:42,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:09:42,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044025628] [2022-04-06 19:09:42,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044025628] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:09:42,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512658216] [2022-04-06 19:09:42,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:09:42,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:09:42,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:09:42,138 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) [2022-04-06 19:09:42,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-04-06 19:09:43,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:09:43,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:09:43,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 1999 conjuncts, 27 conjunts are in the unsatisfiable core [2022-04-06 19:09:43,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:09:43,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:09:43,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:09:43,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512658216] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:09:43,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:09:43,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 23 [2022-04-06 19:09:43,944 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:09:43,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [81962405] [2022-04-06 19:09:43,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [81962405] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:09:43,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:09:43,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 19:09:43,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584614325] [2022-04-06 19:09:43,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:09:43,944 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 19:09:43,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:09:43,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 19:09:43,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2022-04-06 19:09:43,945 INFO L87 Difference]: Start difference. First operand 3681 states and 5169 transitions. Second operand has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 10 states have internal predecessors, (80), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:09:45,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:09:45,638 INFO L93 Difference]: Finished difference Result 3698 states and 5187 transitions. [2022-04-06 19:09:45,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 19:09:45,639 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 10 states have internal predecessors, (80), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2022-04-06 19:09:45,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:09:45,645 INFO L225 Difference]: With dead ends: 3698 [2022-04-06 19:09:45,645 INFO L226 Difference]: Without dead ends: 3672 [2022-04-06 19:09:45,646 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2022-04-06 19:09:45,646 INFO L913 BasicCegarLoop]: 2388 mSDtfsCounter, 7 mSDsluCounter, 28303 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30691 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 19:09:45,646 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 30691 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 19:09:45,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2022-04-06 19:09:46,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 3672. [2022-04-06 19:09:46,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3672 states, 2483 states have (on average 1.3338703181635119) internal successors, (3312), 2552 states have internal predecessors, (3312), 918 states have call successors, (918), 261 states have call predecessors, (918), 270 states have return successors, (927), 900 states have call predecessors, (927), 911 states have call successors, (927) [2022-04-06 19:09:46,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 5157 transitions. [2022-04-06 19:09:46,972 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 5157 transitions. Word has length 106 [2022-04-06 19:09:46,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:09:46,972 INFO L478 AbstractCegarLoop]: Abstraction has 3672 states and 5157 transitions. [2022-04-06 19:09:46,973 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 10 states have internal predecessors, (80), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:09:46,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 5157 transitions. [2022-04-06 19:09:46,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-04-06 19:09:46,974 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:09:46,974 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] [2022-04-06 19:09:47,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-04-06 19:09:47,175 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 [2022-04-06 19:09:47,176 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:09:47,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:09:47,176 INFO L85 PathProgramCache]: Analyzing trace with hash 2068306364, now seen corresponding path program 1 times [2022-04-06 19:09:47,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:09:47,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [288380952] [2022-04-06 19:09:47,178 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:09:47,178 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:09:47,178 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:09:47,179 INFO L85 PathProgramCache]: Analyzing trace with hash 2068306364, now seen corresponding path program 2 times [2022-04-06 19:09:47,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:09:47,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897400880] [2022-04-06 19:09:47,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:09:47,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:09:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:47,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:09:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:47,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:09:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:47,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:09:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:47,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:09:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:47,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:09:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:47,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:47,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-06 19:09:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:47,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:09:47,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:09:47,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897400880] [2022-04-06 19:09:47,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897400880] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:09:47,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104783519] [2022-04-06 19:09:47,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:09:47,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:09:47,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:09:47,530 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) [2022-04-06 19:09:47,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-04-06 19:09:49,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:09:49,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:09:49,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 19:09:49,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:09:49,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:09:49,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:09:49,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104783519] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:09:49,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:09:49,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-04-06 19:09:49,243 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:09:49,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [288380952] [2022-04-06 19:09:49,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [288380952] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:09:49,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:09:49,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 19:09:49,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537730001] [2022-04-06 19:09:49,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:09:49,243 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 19:09:49,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:09:49,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 19:09:49,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-04-06 19:09:49,244 INFO L87 Difference]: Start difference. First operand 3672 states and 5157 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) [2022-04-06 19:09:50,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:09:50,628 INFO L93 Difference]: Finished difference Result 3731 states and 5226 transitions. [2022-04-06 19:09:50,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 19:09:50,628 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 [2022-04-06 19:09:50,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:09:50,636 INFO L225 Difference]: With dead ends: 3731 [2022-04-06 19:09:50,636 INFO L226 Difference]: Without dead ends: 3686 [2022-04-06 19:09:50,637 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 [2022-04-06 19:09:50,638 INFO L913 BasicCegarLoop]: 2373 mSDtfsCounter, 33 mSDsluCounter, 9434 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 11807 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 [2022-04-06 19:09:50,638 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 11807 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 19:09:50,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2022-04-06 19:09:52,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 3671. [2022-04-06 19:09:52,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3671 states, 2482 states have (on average 1.3340048348106366) internal successors, (3311), 2551 states have internal predecessors, (3311), 918 states have call successors, (918), 261 states have call predecessors, (918), 270 states have return successors, (927), 900 states have call predecessors, (927), 911 states have call successors, (927) [2022-04-06 19:09:52,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3671 states to 3671 states and 5156 transitions. [2022-04-06 19:09:52,033 INFO L78 Accepts]: Start accepts. Automaton has 3671 states and 5156 transitions. Word has length 93 [2022-04-06 19:09:52,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:09:52,033 INFO L478 AbstractCegarLoop]: Abstraction has 3671 states and 5156 transitions. [2022-04-06 19:09:52,033 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) [2022-04-06 19:09:52,033 INFO L276 IsEmpty]: Start isEmpty. Operand 3671 states and 5156 transitions. [2022-04-06 19:09:52,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-04-06 19:09:52,035 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:09:52,035 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] [2022-04-06 19:09:52,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-04-06 19:09:52,236 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 [2022-04-06 19:09:52,237 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:09:52,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:09:52,237 INFO L85 PathProgramCache]: Analyzing trace with hash 824363753, now seen corresponding path program 1 times [2022-04-06 19:09:52,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:09:52,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [671900707] [2022-04-06 19:09:52,239 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:09:52,239 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:09:52,240 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:09:52,240 INFO L85 PathProgramCache]: Analyzing trace with hash 824363753, now seen corresponding path program 2 times [2022-04-06 19:09:52,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:09:52,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172884932] [2022-04-06 19:09:52,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:09:52,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:09:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:52,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:09:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:52,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:09:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:52,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:09:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:52,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:09:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:52,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:52,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:09:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:52,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:52,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-06 19:09:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:52,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:52,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 19:09:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:52,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:09:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:52,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 19:09:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:52,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:09:52,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:09:52,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172884932] [2022-04-06 19:09:52,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172884932] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:09:52,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348936738] [2022-04-06 19:09:52,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:09:52,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:09:52,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:09:52,694 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) [2022-04-06 19:09:52,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-04-06 19:09:54,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:09:54,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:09:54,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 2023 conjuncts, 27 conjunts are in the unsatisfiable core [2022-04-06 19:09:54,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:09:54,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:09:54,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:09:54,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348936738] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:09:54,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:09:54,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 23 [2022-04-06 19:09:54,525 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:09:54,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [671900707] [2022-04-06 19:09:54,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [671900707] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:09:54,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:09:54,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 19:09:54,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405542771] [2022-04-06 19:09:54,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:09:54,525 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 19:09:54,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:09:54,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 19:09:54,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2022-04-06 19:09:54,526 INFO L87 Difference]: Start difference. First operand 3671 states and 5156 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 10 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-06 19:09:56,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:09:56,179 INFO L93 Difference]: Finished difference Result 3688 states and 5174 transitions. [2022-04-06 19:09:56,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 19:09:56,179 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 10 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 2 states have call successors, (13) Word has length 112 [2022-04-06 19:09:56,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:09:56,188 INFO L225 Difference]: With dead ends: 3688 [2022-04-06 19:09:56,188 INFO L226 Difference]: Without dead ends: 3662 [2022-04-06 19:09:56,190 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2022-04-06 19:09:56,190 INFO L913 BasicCegarLoop]: 2376 mSDtfsCounter, 7 mSDsluCounter, 28172 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30548 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 19:09:56,190 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 30548 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 19:09:56,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3662 states. [2022-04-06 19:09:57,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3662 to 3662. [2022-04-06 19:09:57,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 2477 states have (on average 1.3342753330641905) internal successors, (3305), 2546 states have internal predecessors, (3305), 915 states have call successors, (915), 260 states have call predecessors, (915), 269 states have return successors, (924), 897 states have call predecessors, (924), 908 states have call successors, (924) [2022-04-06 19:09:57,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 5144 transitions. [2022-04-06 19:09:57,549 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 5144 transitions. Word has length 112 [2022-04-06 19:09:57,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:09:57,549 INFO L478 AbstractCegarLoop]: Abstraction has 3662 states and 5144 transitions. [2022-04-06 19:09:57,549 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 10 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-06 19:09:57,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 5144 transitions. [2022-04-06 19:09:57,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-04-06 19:09:57,550 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:09:57,550 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] [2022-04-06 19:09:57,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-04-06 19:09:57,763 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 [2022-04-06 19:09:57,763 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:09:57,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:09:57,764 INFO L85 PathProgramCache]: Analyzing trace with hash -720706508, now seen corresponding path program 1 times [2022-04-06 19:09:57,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:09:57,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1759763441] [2022-04-06 19:09:57,766 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:09:57,766 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:09:57,766 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:09:57,766 INFO L85 PathProgramCache]: Analyzing trace with hash -720706508, now seen corresponding path program 2 times [2022-04-06 19:09:57,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:09:57,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118434662] [2022-04-06 19:09:57,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:09:57,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:09:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:57,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:09:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:57,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:09:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:58,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:09:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:58,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:09:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:58,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:58,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:09:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:58,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:58,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:09:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:58,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:09:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:58,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:09:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:58,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 19:09:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:58,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:09:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:09:58,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:09:58,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:09:58,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118434662] [2022-04-06 19:09:58,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118434662] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:09:58,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942000490] [2022-04-06 19:09:58,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:09:58,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:09:58,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:09:58,191 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) [2022-04-06 19:09:58,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-04-06 19:09:59,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:09:59,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:09:59,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 1996 conjuncts, 27 conjunts are in the unsatisfiable core [2022-04-06 19:09:59,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:10:00,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:10:00,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:10:00,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942000490] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:10:00,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:10:00,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 23 [2022-04-06 19:10:00,010 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:10:00,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1759763441] [2022-04-06 19:10:00,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1759763441] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:10:00,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:10:00,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 19:10:00,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490316500] [2022-04-06 19:10:00,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:10:00,010 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 19:10:00,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:10:00,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 19:10:00,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2022-04-06 19:10:00,011 INFO L87 Difference]: Start difference. First operand 3662 states and 5144 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 10 states have internal predecessors, (77), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:10:01,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:10:01,702 INFO L93 Difference]: Finished difference Result 3679 states and 5162 transitions. [2022-04-06 19:10:01,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 19:10:01,703 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 10 states have internal predecessors, (77), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) Word has length 103 [2022-04-06 19:10:01,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:10:01,711 INFO L225 Difference]: With dead ends: 3679 [2022-04-06 19:10:01,711 INFO L226 Difference]: Without dead ends: 3653 [2022-04-06 19:10:01,712 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2022-04-06 19:10:01,712 INFO L913 BasicCegarLoop]: 2364 mSDtfsCounter, 7 mSDsluCounter, 28041 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30405 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 19:10:01,712 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 30405 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 19:10:01,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3653 states. [2022-04-06 19:10:03,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3653 to 3653. [2022-04-06 19:10:03,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3653 states, 2471 states have (on average 1.3342776203966005) internal successors, (3297), 2540 states have internal predecessors, (3297), 913 states have call successors, (913), 259 states have call predecessors, (913), 268 states have return successors, (922), 895 states have call predecessors, (922), 906 states have call successors, (922) [2022-04-06 19:10:03,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 5132 transitions. [2022-04-06 19:10:03,057 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 5132 transitions. Word has length 103 [2022-04-06 19:10:03,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:10:03,057 INFO L478 AbstractCegarLoop]: Abstraction has 3653 states and 5132 transitions. [2022-04-06 19:10:03,057 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 10 states have internal predecessors, (77), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:10:03,057 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 5132 transitions. [2022-04-06 19:10:03,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-04-06 19:10:03,059 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:10:03,059 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] [2022-04-06 19:10:03,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-04-06 19:10:03,279 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 [2022-04-06 19:10:03,279 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:10:03,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:10:03,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1320781830, now seen corresponding path program 1 times [2022-04-06 19:10:03,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:10:03,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1073526364] [2022-04-06 19:10:03,282 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:10:03,282 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:10:03,282 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:10:03,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1320781830, now seen corresponding path program 2 times [2022-04-06 19:10:03,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:10:03,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137875760] [2022-04-06 19:10:03,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:10:03,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:10:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:03,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:10:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:03,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:10:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:03,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:10:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:03,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:10:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:03,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:03,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:10:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:03,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:03,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 19:10:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:03,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:03,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:10:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:03,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 19:10:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:03,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:03,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:10:03,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:10:03,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137875760] [2022-04-06 19:10:03,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137875760] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:10:03,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071810819] [2022-04-06 19:10:03,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:10:03,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:10:03,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:10:03,686 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) [2022-04-06 19:10:03,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-04-06 19:10:05,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:10:05,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:10:05,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 27 conjunts are in the unsatisfiable core [2022-04-06 19:10:05,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:10:05,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:10:05,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:10:05,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071810819] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:10:05,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:10:05,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [10] total 22 [2022-04-06 19:10:05,554 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:10:05,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1073526364] [2022-04-06 19:10:05,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1073526364] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:10:05,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:10:05,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 19:10:05,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503573553] [2022-04-06 19:10:05,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:10:05,555 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 19:10:05,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:10:05,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 19:10:05,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-04-06 19:10:05,555 INFO L87 Difference]: Start difference. First operand 3653 states and 5132 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 10 states have internal predecessors, (70), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:10:07,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:10:07,296 INFO L93 Difference]: Finished difference Result 3670 states and 5150 transitions. [2022-04-06 19:10:07,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 19:10:07,296 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 10 states have internal predecessors, (70), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) Word has length 96 [2022-04-06 19:10:07,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:10:07,305 INFO L225 Difference]: With dead ends: 3670 [2022-04-06 19:10:07,305 INFO L226 Difference]: Without dead ends: 3646 [2022-04-06 19:10:07,306 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2022-04-06 19:10:07,307 INFO L913 BasicCegarLoop]: 2348 mSDtfsCounter, 7 mSDsluCounter, 27869 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30217 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 19:10:07,307 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 30217 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 19:10:07,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3646 states. [2022-04-06 19:10:08,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3646 to 3646. [2022-04-06 19:10:08,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 2467 states have (on average 1.3344142683421159) internal successors, (3292), 2536 states have internal predecessors, (3292), 911 states have call successors, (911), 258 states have call predecessors, (911), 267 states have return successors, (920), 893 states have call predecessors, (920), 904 states have call successors, (920) [2022-04-06 19:10:08,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 5123 transitions. [2022-04-06 19:10:08,695 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 5123 transitions. Word has length 96 [2022-04-06 19:10:08,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:10:08,695 INFO L478 AbstractCegarLoop]: Abstraction has 3646 states and 5123 transitions. [2022-04-06 19:10:08,695 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 10 states have internal predecessors, (70), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:10:08,695 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 5123 transitions. [2022-04-06 19:10:08,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-04-06 19:10:08,696 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:10:08,697 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] [2022-04-06 19:10:08,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-04-06 19:10:08,897 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 [2022-04-06 19:10:08,897 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:10:08,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:10:08,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1254251762, now seen corresponding path program 1 times [2022-04-06 19:10:08,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:10:08,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [684627560] [2022-04-06 19:10:08,900 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:10:08,900 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:10:08,900 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:10:08,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1254251762, now seen corresponding path program 2 times [2022-04-06 19:10:08,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:10:08,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171167914] [2022-04-06 19:10:08,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:10:08,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:10:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:09,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:10:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:09,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:10:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:09,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:10:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:09,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:10:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:09,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:09,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:09,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:10:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:09,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 19:10:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:09,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-06 19:10:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:09,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-06 19:10:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:09,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:09,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:10:09,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:10:09,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171167914] [2022-04-06 19:10:09,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171167914] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:10:09,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466320770] [2022-04-06 19:10:09,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:10:09,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:10:09,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:10:09,273 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) [2022-04-06 19:10:09,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-04-06 19:10:10,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:10:10,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:10:10,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 1846 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-06 19:10:10,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:10:11,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:10:11,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:10:11,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466320770] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:10:11,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:10:11,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-04-06 19:10:11,042 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:10:11,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [684627560] [2022-04-06 19:10:11,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [684627560] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:10:11,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:10:11,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:10:11,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500380832] [2022-04-06 19:10:11,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:10:11,043 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:10:11,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:10:11,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:10:11,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-04-06 19:10:11,043 INFO L87 Difference]: Start difference. First operand 3646 states and 5123 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2022-04-06 19:10:12,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:10:12,392 INFO L93 Difference]: Finished difference Result 3822 states and 5324 transitions. [2022-04-06 19:10:12,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:10:12,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 96 [2022-04-06 19:10:12,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:10:12,400 INFO L225 Difference]: With dead ends: 3822 [2022-04-06 19:10:12,400 INFO L226 Difference]: Without dead ends: 3683 [2022-04-06 19:10:12,401 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-04-06 19:10:12,401 INFO L913 BasicCegarLoop]: 2348 mSDtfsCounter, 136 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 4606 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 [2022-04-06 19:10:12,401 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 4606 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 19:10:12,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3683 states. [2022-04-06 19:10:13,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3683 to 3642. [2022-04-06 19:10:13,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 2465 states have (on average 1.3334685598377283) internal successors, (3287), 2533 states have internal predecessors, (3287), 909 states have call successors, (909), 258 states have call predecessors, (909), 267 states have return successors, (918), 892 states have call predecessors, (918), 902 states have call successors, (918) [2022-04-06 19:10:13,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 5114 transitions. [2022-04-06 19:10:13,727 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 5114 transitions. Word has length 96 [2022-04-06 19:10:13,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:10:13,727 INFO L478 AbstractCegarLoop]: Abstraction has 3642 states and 5114 transitions. [2022-04-06 19:10:13,728 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2022-04-06 19:10:13,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 5114 transitions. [2022-04-06 19:10:13,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-04-06 19:10:13,729 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:10:13,729 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] [2022-04-06 19:10:13,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-04-06 19:10:13,929 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 [2022-04-06 19:10:13,930 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:10:13,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:10:13,930 INFO L85 PathProgramCache]: Analyzing trace with hash -752899614, now seen corresponding path program 1 times [2022-04-06 19:10:13,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:10:13,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1951487876] [2022-04-06 19:10:13,932 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:10:13,932 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:10:13,932 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:10:13,932 INFO L85 PathProgramCache]: Analyzing trace with hash -752899614, now seen corresponding path program 2 times [2022-04-06 19:10:13,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:10:13,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764123394] [2022-04-06 19:10:13,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:10:13,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:10:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:14,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:10:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:14,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:10:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:14,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:10:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:14,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:10:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:14,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:10:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:14,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:14,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-06 19:10:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:14,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-06 19:10:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:14,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:14,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-06 19:10:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:14,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:14,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:10:14,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:10:14,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764123394] [2022-04-06 19:10:14,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764123394] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:10:14,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916289269] [2022-04-06 19:10:14,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:10:14,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:10:14,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:10:14,321 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) [2022-04-06 19:10:14,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-04-06 19:10:15,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:10:15,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:10:15,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-06 19:10:15,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:10:16,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:10:16,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:10:16,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916289269] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:10:16,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:10:16,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-04-06 19:10:16,143 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:10:16,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1951487876] [2022-04-06 19:10:16,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1951487876] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:10:16,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:10:16,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 19:10:16,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920532841] [2022-04-06 19:10:16,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:10:16,143 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 19:10:16,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:10:16,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 19:10:16,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-04-06 19:10:16,144 INFO L87 Difference]: Start difference. First operand 3642 states and 5114 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) [2022-04-06 19:10:17,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:10:17,705 INFO L93 Difference]: Finished difference Result 3670 states and 5145 transitions. [2022-04-06 19:10:17,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 19:10:17,706 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 [2022-04-06 19:10:17,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:10:17,714 INFO L225 Difference]: With dead ends: 3670 [2022-04-06 19:10:17,714 INFO L226 Difference]: Without dead ends: 3642 [2022-04-06 19:10:17,716 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 [2022-04-06 19:10:17,716 INFO L913 BasicCegarLoop]: 2344 mSDtfsCounter, 5 mSDsluCounter, 16357 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18701 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 19:10:17,716 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 18701 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 19:10:17,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3642 states. [2022-04-06 19:10:19,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3642 to 3642. [2022-04-06 19:10:19,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 2465 states have (on average 1.3318458417849899) internal successors, (3283), 2533 states have internal predecessors, (3283), 909 states have call successors, (909), 258 states have call predecessors, (909), 267 states have return successors, (918), 892 states have call predecessors, (918), 902 states have call successors, (918) [2022-04-06 19:10:19,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 5110 transitions. [2022-04-06 19:10:19,101 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 5110 transitions. Word has length 102 [2022-04-06 19:10:19,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:10:19,101 INFO L478 AbstractCegarLoop]: Abstraction has 3642 states and 5110 transitions. [2022-04-06 19:10:19,101 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) [2022-04-06 19:10:19,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 5110 transitions. [2022-04-06 19:10:19,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-04-06 19:10:19,103 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:10:19,103 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] [2022-04-06 19:10:19,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-04-06 19:10:19,307 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 [2022-04-06 19:10:19,307 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:10:19,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:10:19,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1064222523, now seen corresponding path program 1 times [2022-04-06 19:10:19,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:10:19,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [283648575] [2022-04-06 19:10:19,310 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:10:19,310 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:10:19,310 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:10:19,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1064222523, now seen corresponding path program 2 times [2022-04-06 19:10:19,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:10:19,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086248339] [2022-04-06 19:10:19,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:10:19,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:10:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:19,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:10:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:19,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:10:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:19,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:10:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:19,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:10:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:19,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:19,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:10:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:19,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:19,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-06 19:10:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:19,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 19:10:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:19,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:19,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:19,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 19:10:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:19,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:10:19,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:10:19,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086248339] [2022-04-06 19:10:19,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086248339] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:10:19,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725158441] [2022-04-06 19:10:19,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:10:19,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:10:19,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:10:19,734 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) [2022-04-06 19:10:19,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-04-06 19:10:21,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:10:21,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:10:21,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 1912 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-06 19:10:21,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:10:21,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:10:21,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:10:21,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725158441] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:10:21,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:10:21,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-04-06 19:10:21,643 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:10:21,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [283648575] [2022-04-06 19:10:21,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [283648575] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:10:21,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:10:21,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 19:10:21,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832824341] [2022-04-06 19:10:21,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:10:21,643 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 19:10:21,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:10:21,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 19:10:21,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-04-06 19:10:21,644 INFO L87 Difference]: Start difference. First operand 3642 states and 5110 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) [2022-04-06 19:10:23,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:10:23,196 INFO L93 Difference]: Finished difference Result 3661 states and 5130 transitions. [2022-04-06 19:10:23,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 19:10:23,197 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 [2022-04-06 19:10:23,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:10:23,204 INFO L225 Difference]: With dead ends: 3661 [2022-04-06 19:10:23,204 INFO L226 Difference]: Without dead ends: 3623 [2022-04-06 19:10:23,205 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 [2022-04-06 19:10:23,205 INFO L913 BasicCegarLoop]: 2335 mSDtfsCounter, 5 mSDsluCounter, 16304 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18639 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:10:23,205 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 18639 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:10:23,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2022-04-06 19:10:24,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3623. [2022-04-06 19:10:24,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3623 states, 2454 states have (on average 1.332925835370823) internal successors, (3271), 2522 states have internal predecessors, (3271), 905 states have call successors, (905), 255 states have call predecessors, (905), 263 states have return successors, (913), 887 states have call predecessors, (913), 898 states have call successors, (913) [2022-04-06 19:10:24,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 5089 transitions. [2022-04-06 19:10:24,560 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 5089 transitions. Word has length 99 [2022-04-06 19:10:24,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:10:24,560 INFO L478 AbstractCegarLoop]: Abstraction has 3623 states and 5089 transitions. [2022-04-06 19:10:24,560 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) [2022-04-06 19:10:24,560 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 5089 transitions. [2022-04-06 19:10:24,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-04-06 19:10:24,561 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:10:24,562 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] [2022-04-06 19:10:24,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-04-06 19:10:24,767 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 [2022-04-06 19:10:24,767 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:10:24,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:10:24,768 INFO L85 PathProgramCache]: Analyzing trace with hash 160391970, now seen corresponding path program 1 times [2022-04-06 19:10:24,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:10:24,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1549322214] [2022-04-06 19:10:24,770 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:10:24,770 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:10:24,770 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:10:24,770 INFO L85 PathProgramCache]: Analyzing trace with hash 160391970, now seen corresponding path program 2 times [2022-04-06 19:10:24,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:10:24,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461872380] [2022-04-06 19:10:24,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:10:24,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:10:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:24,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:10:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:25,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:10:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:25,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:10:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:25,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:10:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:25,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:10:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:25,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:25,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:10:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:25,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 19:10:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:25,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:10:25,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:10:25,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461872380] [2022-04-06 19:10:25,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461872380] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:10:25,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479304715] [2022-04-06 19:10:25,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:10:25,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:10:25,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:10:25,144 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) [2022-04-06 19:10:25,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-04-06 19:10:26,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:10:26,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:10:26,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 1800 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-06 19:10:26,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:10:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:10:27,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:10:27,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479304715] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:10:27,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:10:27,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-04-06 19:10:27,068 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:10:27,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1549322214] [2022-04-06 19:10:27,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1549322214] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:10:27,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:10:27,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 19:10:27,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217193688] [2022-04-06 19:10:27,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:10:27,068 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 19:10:27,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:10:27,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 19:10:27,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-04-06 19:10:27,069 INFO L87 Difference]: Start difference. First operand 3623 states and 5089 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) [2022-04-06 19:10:28,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:10:28,523 INFO L93 Difference]: Finished difference Result 3690 states and 5167 transitions. [2022-04-06 19:10:28,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 19:10:28,523 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 [2022-04-06 19:10:28,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:10:28,532 INFO L225 Difference]: With dead ends: 3690 [2022-04-06 19:10:28,532 INFO L226 Difference]: Without dead ends: 3645 [2022-04-06 19:10:28,533 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 [2022-04-06 19:10:28,533 INFO L913 BasicCegarLoop]: 2310 mSDtfsCounter, 23 mSDsluCounter, 16129 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 18439 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 [2022-04-06 19:10:28,534 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 18439 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:10:28,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3645 states. [2022-04-06 19:10:29,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3645 to 3628. [2022-04-06 19:10:29,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 2458 states have (on average 1.3327908868999185) internal successors, (3276), 2526 states have internal predecessors, (3276), 905 states have call successors, (905), 255 states have call predecessors, (905), 264 states have return successors, (914), 888 states have call predecessors, (914), 898 states have call successors, (914) [2022-04-06 19:10:29,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 5095 transitions. [2022-04-06 19:10:29,900 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 5095 transitions. Word has length 97 [2022-04-06 19:10:29,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:10:29,900 INFO L478 AbstractCegarLoop]: Abstraction has 3628 states and 5095 transitions. [2022-04-06 19:10:29,900 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) [2022-04-06 19:10:29,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 5095 transitions. [2022-04-06 19:10:29,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-04-06 19:10:29,902 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:10:29,902 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] [2022-04-06 19:10:29,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-04-06 19:10:30,102 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 [2022-04-06 19:10:30,102 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:10:30,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:10:30,103 INFO L85 PathProgramCache]: Analyzing trace with hash 579512276, now seen corresponding path program 1 times [2022-04-06 19:10:30,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:10:30,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [569775602] [2022-04-06 19:10:30,105 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:10:30,105 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:10:30,105 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:10:30,105 INFO L85 PathProgramCache]: Analyzing trace with hash 579512276, now seen corresponding path program 2 times [2022-04-06 19:10:30,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:10:30,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069902346] [2022-04-06 19:10:30,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:10:30,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:10:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:30,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:10:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:30,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:10:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:30,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:10:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:30,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:10:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:30,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:10:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:30,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:30,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-06 19:10:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:30,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-06 19:10:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:30,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-06 19:10:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:30,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:10:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:30,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:30,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-04-06 19:10:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:30,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:10:30,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:10:30,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069902346] [2022-04-06 19:10:30,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069902346] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:10:30,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590534711] [2022-04-06 19:10:30,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:10:30,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:10:30,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:10:30,512 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) [2022-04-06 19:10:30,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-04-06 19:10:32,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:10:32,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:10:32,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 2311 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-06 19:10:32,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:10:32,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:10:32,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:10:32,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590534711] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:10:32,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:10:32,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-04-06 19:10:32,627 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:10:32,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [569775602] [2022-04-06 19:10:32,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [569775602] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:10:32,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:10:32,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 19:10:32,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138962831] [2022-04-06 19:10:32,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:10:32,628 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 19:10:32,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:10:32,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 19:10:32,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-04-06 19:10:32,628 INFO L87 Difference]: Start difference. First operand 3628 states and 5095 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2022-04-06 19:10:36,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:10:36,752 INFO L93 Difference]: Finished difference Result 5007 states and 7070 transitions. [2022-04-06 19:10:36,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 19:10:36,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 104 [2022-04-06 19:10:36,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:10:36,760 INFO L225 Difference]: With dead ends: 5007 [2022-04-06 19:10:36,761 INFO L226 Difference]: Without dead ends: 3682 [2022-04-06 19:10:36,764 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-04-06 19:10:36,764 INFO L913 BasicCegarLoop]: 2681 mSDtfsCounter, 5428 mSDsluCounter, 2373 mSDsCounter, 0 mSdLazyCounter, 1580 mSolverCounterSat, 777 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5429 SdHoareTripleChecker+Valid, 5054 SdHoareTripleChecker+Invalid, 2357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 777 IncrementalHoareTripleChecker+Valid, 1580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-04-06 19:10:36,764 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5429 Valid, 5054 Invalid, 2357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [777 Valid, 1580 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-04-06 19:10:36,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3682 states. [2022-04-06 19:10:38,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3682 to 3625. [2022-04-06 19:10:38,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3625 states, 2455 states have (on average 1.3315682281059062) internal successors, (3269), 2523 states have internal predecessors, (3269), 905 states have call successors, (905), 255 states have call predecessors, (905), 264 states have return successors, (914), 888 states have call predecessors, (914), 898 states have call successors, (914) [2022-04-06 19:10:38,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3625 states to 3625 states and 5088 transitions. [2022-04-06 19:10:38,150 INFO L78 Accepts]: Start accepts. Automaton has 3625 states and 5088 transitions. Word has length 104 [2022-04-06 19:10:38,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:10:38,150 INFO L478 AbstractCegarLoop]: Abstraction has 3625 states and 5088 transitions. [2022-04-06 19:10:38,150 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2022-04-06 19:10:38,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3625 states and 5088 transitions. [2022-04-06 19:10:38,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-04-06 19:10:38,152 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:10:38,152 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] [2022-04-06 19:10:38,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-04-06 19:10:38,359 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 [2022-04-06 19:10:38,359 INFO L403 AbstractCegarLoop]: === Iteration 71 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:10:38,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:10:38,359 INFO L85 PathProgramCache]: Analyzing trace with hash -932751459, now seen corresponding path program 1 times [2022-04-06 19:10:38,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:10:38,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [647931562] [2022-04-06 19:10:38,362 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:10:38,362 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:10:38,362 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:10:38,362 INFO L85 PathProgramCache]: Analyzing trace with hash -932751459, now seen corresponding path program 2 times [2022-04-06 19:10:38,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:10:38,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930078458] [2022-04-06 19:10:38,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:10:38,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:10:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:38,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:10:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:38,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:10:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:38,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:10:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:38,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:10:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:38,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:10:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:38,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:38,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-06 19:10:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:38,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-06 19:10:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:38,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-06 19:10:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:38,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:10:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:38,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:38,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-04-06 19:10:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:38,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:10:38,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:10:38,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930078458] [2022-04-06 19:10:38,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930078458] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:10:38,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955127167] [2022-04-06 19:10:38,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:10:38,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:10:38,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:10:38,724 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) [2022-04-06 19:10:38,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-04-06 19:10:40,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:10:40,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:10:40,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 2187 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 19:10:40,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:10:40,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:10:40,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:10:40,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955127167] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:10:40,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:10:40,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-04-06 19:10:40,598 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:10:40,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [647931562] [2022-04-06 19:10:40,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [647931562] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:10:40,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:10:40,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:10:40,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55680916] [2022-04-06 19:10:40,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:10:40,599 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:10:40,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:10:40,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:10:40,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-04-06 19:10:40,599 INFO L87 Difference]: Start difference. First operand 3625 states and 5088 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:10:42,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:10:42,458 INFO L93 Difference]: Finished difference Result 7513 states and 10738 transitions. [2022-04-06 19:10:42,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:10:42,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2022-04-06 19:10:42,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:10:42,470 INFO L225 Difference]: With dead ends: 7513 [2022-04-06 19:10:42,470 INFO L226 Difference]: Without dead ends: 4938 [2022-04-06 19:10:42,476 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-04-06 19:10:42,476 INFO L913 BasicCegarLoop]: 3458 mSDtfsCounter, 1831 mSDsluCounter, 2282 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 5740 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 19:10:42,476 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1831 Valid, 5740 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 19:10:42,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4938 states. [2022-04-06 19:10:44,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4938 to 4881. [2022-04-06 19:10:44,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4881 states, 3288 states have (on average 1.3415450121654502) internal successors, (4411), 3378 states have internal predecessors, (4411), 1250 states have call successors, (1250), 331 states have call predecessors, (1250), 342 states have return successors, (1263), 1226 states have call predecessors, (1263), 1244 states have call successors, (1263) [2022-04-06 19:10:44,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4881 states to 4881 states and 6924 transitions. [2022-04-06 19:10:44,284 INFO L78 Accepts]: Start accepts. Automaton has 4881 states and 6924 transitions. Word has length 106 [2022-04-06 19:10:44,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:10:44,285 INFO L478 AbstractCegarLoop]: Abstraction has 4881 states and 6924 transitions. [2022-04-06 19:10:44,285 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:10:44,285 INFO L276 IsEmpty]: Start isEmpty. Operand 4881 states and 6924 transitions. [2022-04-06 19:10:44,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-04-06 19:10:44,286 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:10:44,286 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] [2022-04-06 19:10:44,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-04-06 19:10:44,491 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 [2022-04-06 19:10:44,491 INFO L403 AbstractCegarLoop]: === Iteration 72 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:10:44,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:10:44,492 INFO L85 PathProgramCache]: Analyzing trace with hash -315181088, now seen corresponding path program 1 times [2022-04-06 19:10:44,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:10:44,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2068204053] [2022-04-06 19:10:44,494 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:10:44,494 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:10:44,494 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:10:44,494 INFO L85 PathProgramCache]: Analyzing trace with hash -315181088, now seen corresponding path program 2 times [2022-04-06 19:10:44,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:10:44,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162766724] [2022-04-06 19:10:44,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:10:44,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:10:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:44,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:10:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:44,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:10:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:44,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:10:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:44,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:10:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:44,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:44,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:10:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:44,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:44,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-06 19:10:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:44,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 19:10:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:44,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:10:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:44,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 19:10:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:44,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:44,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:10:44,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:10:44,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162766724] [2022-04-06 19:10:44,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162766724] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:10:44,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515348127] [2022-04-06 19:10:44,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:10:44,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:10:44,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:10:44,949 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) [2022-04-06 19:10:44,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-04-06 19:10:46,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:10:46,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:10:46,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 27 conjunts are in the unsatisfiable core [2022-04-06 19:10:46,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:10:46,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:10:46,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:10:46,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515348127] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:10:46,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:10:46,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [11] total 24 [2022-04-06 19:10:46,952 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:10:46,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2068204053] [2022-04-06 19:10:46,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2068204053] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:10:46,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:10:46,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 19:10:46,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570420497] [2022-04-06 19:10:46,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:10:46,953 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 19:10:46,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:10:46,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 19:10:46,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2022-04-06 19:10:46,953 INFO L87 Difference]: Start difference. First operand 4881 states and 6924 transitions. Second operand has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 11 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:10:49,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:10:49,064 INFO L93 Difference]: Finished difference Result 4898 states and 6942 transitions. [2022-04-06 19:10:49,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 19:10:49,065 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 11 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-04-06 19:10:49,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:10:49,076 INFO L225 Difference]: With dead ends: 4898 [2022-04-06 19:10:49,077 INFO L226 Difference]: Without dead ends: 4856 [2022-04-06 19:10:49,078 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2022-04-06 19:10:49,079 INFO L913 BasicCegarLoop]: 2315 mSDtfsCounter, 9 mSDsluCounter, 29777 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 32092 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 19:10:49,079 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 32092 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 19:10:49,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2022-04-06 19:10:50,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2022-04-06 19:10:50,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4856 states, 3272 states have (on average 1.3429095354523228) internal successors, (4394), 3362 states have internal predecessors, (4394), 1245 states have call successors, (1245), 327 states have call predecessors, (1245), 338 states have return successors, (1258), 1221 states have call predecessors, (1258), 1239 states have call successors, (1258) [2022-04-06 19:10:50,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 6897 transitions. [2022-04-06 19:10:50,946 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 6897 transitions. Word has length 102 [2022-04-06 19:10:50,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:10:50,946 INFO L478 AbstractCegarLoop]: Abstraction has 4856 states and 6897 transitions. [2022-04-06 19:10:50,946 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 11 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:10:50,947 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 6897 transitions. [2022-04-06 19:10:50,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-04-06 19:10:50,948 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:10:50,948 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] [2022-04-06 19:10:50,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-04-06 19:10:51,148 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 [2022-04-06 19:10:51,149 INFO L403 AbstractCegarLoop]: === Iteration 73 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:10:51,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:10:51,149 INFO L85 PathProgramCache]: Analyzing trace with hash 413445426, now seen corresponding path program 1 times [2022-04-06 19:10:51,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:10:51,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1939059448] [2022-04-06 19:10:51,151 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:10:51,151 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:10:51,151 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:10:51,151 INFO L85 PathProgramCache]: Analyzing trace with hash 413445426, now seen corresponding path program 2 times [2022-04-06 19:10:51,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:10:51,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501786060] [2022-04-06 19:10:51,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:10:51,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:10:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:51,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:10:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:51,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:10:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:51,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:10:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:51,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:10:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:51,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:10:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:51,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:51,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:10:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:51,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:10:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:51,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:51,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 19:10:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:51,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-06 19:10:51,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:10:51,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501786060] [2022-04-06 19:10:51,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501786060] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:10:51,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506333969] [2022-04-06 19:10:51,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:10:51,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:10:51,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:10:51,544 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) [2022-04-06 19:10:51,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-04-06 19:10:53,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:10:53,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:10:53,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 1830 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 19:10:53,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:10:53,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 19:10:53,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:10:53,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506333969] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:10:53,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:10:53,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-04-06 19:10:53,502 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:10:53,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1939059448] [2022-04-06 19:10:53,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1939059448] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:10:53,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:10:53,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 19:10:53,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974247724] [2022-04-06 19:10:53,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:10:53,503 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 19:10:53,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:10:53,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 19:10:53,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-04-06 19:10:53,503 INFO L87 Difference]: Start difference. First operand 4856 states and 6897 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) [2022-04-06 19:10:55,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:10:55,463 INFO L93 Difference]: Finished difference Result 4917 states and 6969 transitions. [2022-04-06 19:10:55,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 19:10:55,463 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 [2022-04-06 19:10:55,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:10:55,474 INFO L225 Difference]: With dead ends: 4917 [2022-04-06 19:10:55,474 INFO L226 Difference]: Without dead ends: 4872 [2022-04-06 19:10:55,476 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 [2022-04-06 19:10:55,476 INFO L913 BasicCegarLoop]: 2288 mSDtfsCounter, 20 mSDsluCounter, 13686 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 15974 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 [2022-04-06 19:10:55,476 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 15974 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:10:55,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4872 states. [2022-04-06 19:10:57,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4872 to 4856. [2022-04-06 19:10:57,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4856 states, 3272 states have (on average 1.3429095354523228) internal successors, (4394), 3362 states have internal predecessors, (4394), 1245 states have call successors, (1245), 327 states have call predecessors, (1245), 338 states have return successors, (1258), 1221 states have call predecessors, (1258), 1239 states have call successors, (1258) [2022-04-06 19:10:57,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 6897 transitions. [2022-04-06 19:10:57,302 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 6897 transitions. Word has length 102 [2022-04-06 19:10:57,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:10:57,302 INFO L478 AbstractCegarLoop]: Abstraction has 4856 states and 6897 transitions. [2022-04-06 19:10:57,302 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) [2022-04-06 19:10:57,302 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 6897 transitions. [2022-04-06 19:10:57,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-04-06 19:10:57,304 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:10:57,304 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] [2022-04-06 19:10:57,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-04-06 19:10:57,504 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 [2022-04-06 19:10:57,504 INFO L403 AbstractCegarLoop]: === Iteration 74 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:10:57,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:10:57,505 INFO L85 PathProgramCache]: Analyzing trace with hash -711041418, now seen corresponding path program 1 times [2022-04-06 19:10:57,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:10:57,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2095407735] [2022-04-06 19:10:57,507 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:10:57,507 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:10:57,507 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:10:57,507 INFO L85 PathProgramCache]: Analyzing trace with hash -711041418, now seen corresponding path program 2 times [2022-04-06 19:10:57,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:10:57,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076584869] [2022-04-06 19:10:57,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:10:57,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:10:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:57,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:10:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:57,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:10:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:57,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:10:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:57,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:10:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:57,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:10:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:57,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:57,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:10:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:57,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 19:10:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:57,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:10:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:57,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 19:10:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:10:57,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-06 19:10:57,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:10:57,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076584869] [2022-04-06 19:10:57,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076584869] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:10:57,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597807341] [2022-04-06 19:10:57,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:10:57,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:10:57,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:10:57,903 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) [2022-04-06 19:10:57,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-04-06 19:10:59,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:10:59,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:10:59,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 19:10:59,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:10:59,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 19:10:59,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:10:59,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597807341] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:10:59,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:10:59,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-04-06 19:10:59,858 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:10:59,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2095407735] [2022-04-06 19:10:59,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2095407735] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:10:59,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:10:59,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 19:10:59,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156444747] [2022-04-06 19:10:59,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:10:59,859 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 19:10:59,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:10:59,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 19:10:59,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-04-06 19:10:59,859 INFO L87 Difference]: Start difference. First operand 4856 states and 6897 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) [2022-04-06 19:11:01,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:11:01,761 INFO L93 Difference]: Finished difference Result 4917 states and 6969 transitions. [2022-04-06 19:11:01,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 19:11:01,761 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 [2022-04-06 19:11:01,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:11:01,772 INFO L225 Difference]: With dead ends: 4917 [2022-04-06 19:11:01,772 INFO L226 Difference]: Without dead ends: 4872 [2022-04-06 19:11:01,773 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 [2022-04-06 19:11:01,773 INFO L913 BasicCegarLoop]: 2288 mSDtfsCounter, 20 mSDsluCounter, 13686 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 15974 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 [2022-04-06 19:11:01,773 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 15974 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:11:01,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4872 states. [2022-04-06 19:11:03,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4872 to 4856. [2022-04-06 19:11:03,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4856 states, 3272 states have (on average 1.3429095354523228) internal successors, (4394), 3362 states have internal predecessors, (4394), 1245 states have call successors, (1245), 327 states have call predecessors, (1245), 338 states have return successors, (1258), 1221 states have call predecessors, (1258), 1239 states have call successors, (1258) [2022-04-06 19:11:03,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 6897 transitions. [2022-04-06 19:11:03,585 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 6897 transitions. Word has length 103 [2022-04-06 19:11:03,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:11:03,585 INFO L478 AbstractCegarLoop]: Abstraction has 4856 states and 6897 transitions. [2022-04-06 19:11:03,585 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) [2022-04-06 19:11:03,585 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 6897 transitions. [2022-04-06 19:11:03,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-04-06 19:11:03,587 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:11:03,587 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] [2022-04-06 19:11:03,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-04-06 19:11:03,787 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 [2022-04-06 19:11:03,787 INFO L403 AbstractCegarLoop]: === Iteration 75 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:11:03,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:11:03,788 INFO L85 PathProgramCache]: Analyzing trace with hash -414372995, now seen corresponding path program 1 times [2022-04-06 19:11:03,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:11:03,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1252785728] [2022-04-06 19:11:03,790 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:11:03,790 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:11:03,790 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:11:03,790 INFO L85 PathProgramCache]: Analyzing trace with hash -414372995, now seen corresponding path program 2 times [2022-04-06 19:11:03,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:11:03,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340501901] [2022-04-06 19:11:03,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:11:03,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:11:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:04,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:11:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:04,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:11:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:04,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:11:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:04,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:11:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:04,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:04,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:04,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:11:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:04,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 19:11:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:04,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-06 19:11:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:04,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:11:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:04,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-06 19:11:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:04,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:04,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:11:04,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:11:04,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340501901] [2022-04-06 19:11:04,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340501901] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:11:04,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306599479] [2022-04-06 19:11:04,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:11:04,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:11:04,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:11:04,215 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) [2022-04-06 19:11:04,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-04-06 19:11:06,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:11:06,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:11:06,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 1945 conjuncts, 15 conjunts are in the unsatisfiable core [2022-04-06 19:11:06,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:11:06,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:11:06,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:11:06,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306599479] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:11:06,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:11:06,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-04-06 19:11:06,216 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:11:06,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1252785728] [2022-04-06 19:11:06,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1252785728] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:11:06,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:11:06,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 19:11:06,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889675879] [2022-04-06 19:11:06,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:11:06,216 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 19:11:06,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:11:06,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 19:11:06,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-04-06 19:11:06,217 INFO L87 Difference]: Start difference. First operand 4856 states and 6897 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:11:08,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:11:08,234 INFO L93 Difference]: Finished difference Result 4876 states and 6921 transitions. [2022-04-06 19:11:08,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 19:11:08,235 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 103 [2022-04-06 19:11:08,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:11:08,246 INFO L225 Difference]: With dead ends: 4876 [2022-04-06 19:11:08,246 INFO L226 Difference]: Without dead ends: 4819 [2022-04-06 19:11:08,248 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-04-06 19:11:08,248 INFO L913 BasicCegarLoop]: 2287 mSDtfsCounter, 11 mSDsluCounter, 15853 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18140 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 19:11:08,248 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 18140 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 19:11:08,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4819 states. [2022-04-06 19:11:10,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4819 to 4813. [2022-04-06 19:11:10,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4813 states, 3240 states have (on average 1.3435185185185186) internal successors, (4353), 3329 states have internal predecessors, (4353), 1241 states have call successors, (1241), 322 states have call predecessors, (1241), 331 states have return successors, (1252), 1215 states have call predecessors, (1252), 1235 states have call successors, (1252) [2022-04-06 19:11:10,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4813 states to 4813 states and 6846 transitions. [2022-04-06 19:11:10,117 INFO L78 Accepts]: Start accepts. Automaton has 4813 states and 6846 transitions. Word has length 103 [2022-04-06 19:11:10,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:11:10,118 INFO L478 AbstractCegarLoop]: Abstraction has 4813 states and 6846 transitions. [2022-04-06 19:11:10,118 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:11:10,118 INFO L276 IsEmpty]: Start isEmpty. Operand 4813 states and 6846 transitions. [2022-04-06 19:11:10,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-04-06 19:11:10,119 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:11:10,119 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] [2022-04-06 19:11:10,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-04-06 19:11:10,320 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 [2022-04-06 19:11:10,320 INFO L403 AbstractCegarLoop]: === Iteration 76 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:11:10,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:11:10,320 INFO L85 PathProgramCache]: Analyzing trace with hash -623723139, now seen corresponding path program 1 times [2022-04-06 19:11:10,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:11:10,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1154914752] [2022-04-06 19:11:10,322 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:11:10,322 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:11:10,322 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:11:10,323 INFO L85 PathProgramCache]: Analyzing trace with hash -623723139, now seen corresponding path program 2 times [2022-04-06 19:11:10,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:11:10,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145295592] [2022-04-06 19:11:10,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:11:10,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:11:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:10,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:11:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:10,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:11:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:10,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:11:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:10,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:11:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:10,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:11:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:10,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:10,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:11:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:10,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:11:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:10,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:10,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-06 19:11:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:10,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:10,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-06 19:11:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:10,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:11:10,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:11:10,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145295592] [2022-04-06 19:11:10,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145295592] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:11:10,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295982229] [2022-04-06 19:11:10,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:11:10,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:11:10,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:11:10,751 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) [2022-04-06 19:11:10,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-04-06 19:11:12,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:11:12,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:11:12,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 2003 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-06 19:11:12,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:11:12,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:11:12,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:11:12,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295982229] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:11:12,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:11:12,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-04-06 19:11:12,723 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:11:12,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1154914752] [2022-04-06 19:11:12,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1154914752] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:11:12,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:11:12,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:11:12,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99967144] [2022-04-06 19:11:12,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:11:12,724 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:11:12,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:11:12,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:11:12,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-04-06 19:11:12,724 INFO L87 Difference]: Start difference. First operand 4813 states and 6846 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-06 19:11:14,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:11:14,535 INFO L93 Difference]: Finished difference Result 4815 states and 6847 transitions. [2022-04-06 19:11:14,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:11:14,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 107 [2022-04-06 19:11:14,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:11:14,547 INFO L225 Difference]: With dead ends: 4815 [2022-04-06 19:11:14,547 INFO L226 Difference]: Without dead ends: 4731 [2022-04-06 19:11:14,548 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-04-06 19:11:14,549 INFO L913 BasicCegarLoop]: 2285 mSDtfsCounter, 5 mSDsluCounter, 2267 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4552 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 19:11:14,549 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 4552 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 19:11:14,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2022-04-06 19:11:16,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 4731. [2022-04-06 19:11:16,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4731 states, 3181 states have (on average 1.3467463061930212) internal successors, (4284), 3267 states have internal predecessors, (4284), 1228 states have call successors, (1228), 313 states have call predecessors, (1228), 321 states have return successors, (1239), 1202 states have call predecessors, (1239), 1223 states have call successors, (1239) [2022-04-06 19:11:16,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4731 states to 4731 states and 6751 transitions. [2022-04-06 19:11:16,308 INFO L78 Accepts]: Start accepts. Automaton has 4731 states and 6751 transitions. Word has length 107 [2022-04-06 19:11:16,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:11:16,308 INFO L478 AbstractCegarLoop]: Abstraction has 4731 states and 6751 transitions. [2022-04-06 19:11:16,309 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-06 19:11:16,309 INFO L276 IsEmpty]: Start isEmpty. Operand 4731 states and 6751 transitions. [2022-04-06 19:11:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-04-06 19:11:16,310 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:11:16,310 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] [2022-04-06 19:11:16,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-04-06 19:11:16,511 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 [2022-04-06 19:11:16,511 INFO L403 AbstractCegarLoop]: === Iteration 77 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:11:16,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:11:16,512 INFO L85 PathProgramCache]: Analyzing trace with hash 2063496998, now seen corresponding path program 1 times [2022-04-06 19:11:16,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:11:16,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2056088984] [2022-04-06 19:11:16,514 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:11:16,514 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:11:16,514 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:11:16,514 INFO L85 PathProgramCache]: Analyzing trace with hash 2063496998, now seen corresponding path program 2 times [2022-04-06 19:11:16,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:11:16,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567572889] [2022-04-06 19:11:16,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:11:16,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:11:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:16,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:11:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:16,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:11:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:16,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:11:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:16,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:11:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:16,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:11:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:16,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:16,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:11:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:16,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-06 19:11:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:16,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:16,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-06 19:11:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:16,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:16,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:11:16,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:11:16,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567572889] [2022-04-06 19:11:16,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567572889] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:11:16,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921001244] [2022-04-06 19:11:16,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:11:16,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:11:16,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:11:16,909 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) [2022-04-06 19:11:16,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-04-06 19:11:18,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:11:18,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:11:18,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-06 19:11:18,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:11:18,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:11:18,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:11:18,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921001244] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:11:18,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:11:18,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-04-06 19:11:18,952 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:11:18,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2056088984] [2022-04-06 19:11:18,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2056088984] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:11:18,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:11:18,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 19:11:18,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936306693] [2022-04-06 19:11:18,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:11:18,952 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 19:11:18,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:11:18,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 19:11:18,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-04-06 19:11:18,953 INFO L87 Difference]: Start difference. First operand 4731 states and 6751 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 7 states have internal predecessors, (81), 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) [2022-04-06 19:11:20,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:11:20,942 INFO L93 Difference]: Finished difference Result 4757 states and 6780 transitions. [2022-04-06 19:11:20,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 19:11:20,942 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 7 states have internal predecessors, (81), 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 105 [2022-04-06 19:11:20,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:11:20,952 INFO L225 Difference]: With dead ends: 4757 [2022-04-06 19:11:20,952 INFO L226 Difference]: Without dead ends: 4730 [2022-04-06 19:11:20,953 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-04-06 19:11:20,953 INFO L913 BasicCegarLoop]: 2260 mSDtfsCounter, 20 mSDsluCounter, 15766 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 18026 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:11:20,954 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 18026 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:11:20,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4730 states. [2022-04-06 19:11:22,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4730 to 4730. [2022-04-06 19:11:22,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4730 states, 3180 states have (on average 1.3462264150943397) internal successors, (4281), 3266 states have internal predecessors, (4281), 1228 states have call successors, (1228), 313 states have call predecessors, (1228), 321 states have return successors, (1239), 1202 states have call predecessors, (1239), 1223 states have call successors, (1239) [2022-04-06 19:11:22,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4730 states to 4730 states and 6748 transitions. [2022-04-06 19:11:22,766 INFO L78 Accepts]: Start accepts. Automaton has 4730 states and 6748 transitions. Word has length 105 [2022-04-06 19:11:22,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:11:22,766 INFO L478 AbstractCegarLoop]: Abstraction has 4730 states and 6748 transitions. [2022-04-06 19:11:22,766 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 7 states have internal predecessors, (81), 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) [2022-04-06 19:11:22,767 INFO L276 IsEmpty]: Start isEmpty. Operand 4730 states and 6748 transitions. [2022-04-06 19:11:22,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-04-06 19:11:22,768 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:11:22,768 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, 1, 1, 1] [2022-04-06 19:11:22,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-04-06 19:11:22,968 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 [2022-04-06 19:11:22,969 INFO L403 AbstractCegarLoop]: === Iteration 78 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:11:22,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:11:22,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1385353665, now seen corresponding path program 1 times [2022-04-06 19:11:22,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:11:22,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1634518414] [2022-04-06 19:11:22,971 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:11:22,971 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:11:22,971 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:11:22,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1385353665, now seen corresponding path program 2 times [2022-04-06 19:11:22,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:11:22,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924792673] [2022-04-06 19:11:22,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:11:22,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:11:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:23,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:11:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:23,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:11:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:23,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:11:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:23,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:11:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:23,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:11:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:23,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:23,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-06 19:11:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:23,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 19:11:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:23,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:23,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 19:11:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:23,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 19:11:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:23,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-06 19:11:23,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:11:23,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924792673] [2022-04-06 19:11:23,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924792673] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:11:23,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441776673] [2022-04-06 19:11:23,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:11:23,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:11:23,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:11:23,442 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) [2022-04-06 19:11:23,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-04-06 19:11:25,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:11:25,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:11:25,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 19:11:25,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:11:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 19:11:25,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:11:25,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441776673] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:11:25,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:11:25,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-04-06 19:11:25,604 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:11:25,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1634518414] [2022-04-06 19:11:25,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1634518414] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:11:25,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:11:25,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 19:11:25,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494677149] [2022-04-06 19:11:25,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:11:25,605 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 19:11:25,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:11:25,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 19:11:25,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-04-06 19:11:25,605 INFO L87 Difference]: Start difference. First operand 4730 states and 6748 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 1 states have call successors, (11) [2022-04-06 19:11:27,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:11:27,593 INFO L93 Difference]: Finished difference Result 4787 states and 6816 transitions. [2022-04-06 19:11:27,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 19:11:27,593 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 1 states have call successors, (11) Word has length 106 [2022-04-06 19:11:27,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:11:27,604 INFO L225 Difference]: With dead ends: 4787 [2022-04-06 19:11:27,604 INFO L226 Difference]: Without dead ends: 4742 [2022-04-06 19:11:27,606 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-04-06 19:11:27,606 INFO L913 BasicCegarLoop]: 2245 mSDtfsCounter, 17 mSDsluCounter, 13435 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 15680 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 19:11:27,606 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 15680 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 19:11:27,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4742 states. [2022-04-06 19:11:29,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4742 to 4730. [2022-04-06 19:11:29,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4730 states, 3180 states have (on average 1.3462264150943397) internal successors, (4281), 3266 states have internal predecessors, (4281), 1228 states have call successors, (1228), 313 states have call predecessors, (1228), 321 states have return successors, (1239), 1202 states have call predecessors, (1239), 1223 states have call successors, (1239) [2022-04-06 19:11:29,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4730 states to 4730 states and 6748 transitions. [2022-04-06 19:11:29,627 INFO L78 Accepts]: Start accepts. Automaton has 4730 states and 6748 transitions. Word has length 106 [2022-04-06 19:11:29,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:11:29,627 INFO L478 AbstractCegarLoop]: Abstraction has 4730 states and 6748 transitions. [2022-04-06 19:11:29,627 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 1 states have call successors, (11) [2022-04-06 19:11:29,628 INFO L276 IsEmpty]: Start isEmpty. Operand 4730 states and 6748 transitions. [2022-04-06 19:11:29,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-04-06 19:11:29,629 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:11:29,629 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, 1, 1, 1, 1] [2022-04-06 19:11:29,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-04-06 19:11:29,829 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 [2022-04-06 19:11:29,830 INFO L403 AbstractCegarLoop]: === Iteration 79 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:11:29,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:11:29,830 INFO L85 PathProgramCache]: Analyzing trace with hash -922718710, now seen corresponding path program 1 times [2022-04-06 19:11:29,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:11:29,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1817110392] [2022-04-06 19:11:29,832 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:11:29,832 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:11:29,832 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:11:29,832 INFO L85 PathProgramCache]: Analyzing trace with hash -922718710, now seen corresponding path program 2 times [2022-04-06 19:11:29,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:11:29,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289403488] [2022-04-06 19:11:29,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:11:29,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:11:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:30,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:11:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:30,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:11:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:30,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:11:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:30,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:11:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:30,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:11:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:30,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:30,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-06 19:11:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:30,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:11:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:30,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:30,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 19:11:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:30,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 19:11:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:30,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-06 19:11:30,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:11:30,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289403488] [2022-04-06 19:11:30,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289403488] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:11:30,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326893040] [2022-04-06 19:11:30,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:11:30,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:11:30,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:11:30,257 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) [2022-04-06 19:11:30,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-04-06 19:11:32,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:11:32,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:11:32,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 1857 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 19:11:32,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:11:32,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 19:11:32,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:11:32,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326893040] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:11:32,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:11:32,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-04-06 19:11:32,352 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:11:32,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1817110392] [2022-04-06 19:11:32,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1817110392] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:11:32,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:11:32,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 19:11:32,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792662838] [2022-04-06 19:11:32,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:11:32,353 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 19:11:32,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:11:32,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 19:11:32,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-04-06 19:11:32,353 INFO L87 Difference]: Start difference. First operand 4730 states and 6748 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 1 states have call successors, (11) [2022-04-06 19:11:34,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:11:34,233 INFO L93 Difference]: Finished difference Result 4792 states and 6822 transitions. [2022-04-06 19:11:34,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 19:11:34,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 1 states have call successors, (11) Word has length 107 [2022-04-06 19:11:34,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:11:34,245 INFO L225 Difference]: With dead ends: 4792 [2022-04-06 19:11:34,245 INFO L226 Difference]: Without dead ends: 4747 [2022-04-06 19:11:34,247 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-04-06 19:11:34,247 INFO L913 BasicCegarLoop]: 2245 mSDtfsCounter, 17 mSDsluCounter, 13435 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 15680 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 19:11:34,247 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 15680 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 19:11:34,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4747 states. [2022-04-06 19:11:36,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4747 to 4730. [2022-04-06 19:11:36,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4730 states, 3180 states have (on average 1.3462264150943397) internal successors, (4281), 3266 states have internal predecessors, (4281), 1228 states have call successors, (1228), 313 states have call predecessors, (1228), 321 states have return successors, (1239), 1202 states have call predecessors, (1239), 1223 states have call successors, (1239) [2022-04-06 19:11:36,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4730 states to 4730 states and 6748 transitions. [2022-04-06 19:11:36,088 INFO L78 Accepts]: Start accepts. Automaton has 4730 states and 6748 transitions. Word has length 107 [2022-04-06 19:11:36,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:11:36,088 INFO L478 AbstractCegarLoop]: Abstraction has 4730 states and 6748 transitions. [2022-04-06 19:11:36,088 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 1 states have call successors, (11) [2022-04-06 19:11:36,088 INFO L276 IsEmpty]: Start isEmpty. Operand 4730 states and 6748 transitions. [2022-04-06 19:11:36,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-04-06 19:11:36,090 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:11:36,090 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] [2022-04-06 19:11:36,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-04-06 19:11:36,290 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 [2022-04-06 19:11:36,290 INFO L403 AbstractCegarLoop]: === Iteration 80 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:11:36,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:11:36,291 INFO L85 PathProgramCache]: Analyzing trace with hash -506154806, now seen corresponding path program 1 times [2022-04-06 19:11:36,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:11:36,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [612365590] [2022-04-06 19:11:36,293 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:11:36,293 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:11:36,293 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:11:36,293 INFO L85 PathProgramCache]: Analyzing trace with hash -506154806, now seen corresponding path program 2 times [2022-04-06 19:11:36,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:11:36,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911313913] [2022-04-06 19:11:36,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:11:36,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:11:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:36,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:11:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:36,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:11:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:36,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:11:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:36,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:11:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:36,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:11:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:36,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:36,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-06 19:11:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:36,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-06 19:11:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:36,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:36,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-06 19:11:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:36,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:11:36,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:11:36,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911313913] [2022-04-06 19:11:36,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911313913] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:11:36,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144884022] [2022-04-06 19:11:36,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:11:36,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:11:36,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:11:36,718 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) [2022-04-06 19:11:36,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-04-06 19:11:38,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:11:38,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:11:38,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-06 19:11:38,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:11:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:11:38,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:11:38,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144884022] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:11:38,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:11:38,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-04-06 19:11:38,908 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:11:38,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [612365590] [2022-04-06 19:11:38,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [612365590] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:11:38,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:11:38,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 19:11:38,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756726847] [2022-04-06 19:11:38,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:11:38,908 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 19:11:38,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:11:38,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 19:11:38,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-04-06 19:11:38,909 INFO L87 Difference]: Start difference. First operand 4730 states and 6748 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 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) [2022-04-06 19:11:40,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:11:40,943 INFO L93 Difference]: Finished difference Result 4757 states and 6779 transitions. [2022-04-06 19:11:40,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 19:11:40,943 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 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 107 [2022-04-06 19:11:40,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:11:40,954 INFO L225 Difference]: With dead ends: 4757 [2022-04-06 19:11:40,954 INFO L226 Difference]: Without dead ends: 4730 [2022-04-06 19:11:40,955 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-04-06 19:11:40,955 INFO L913 BasicCegarLoop]: 2257 mSDtfsCounter, 12 mSDsluCounter, 15750 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 18007 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 19:11:40,955 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 18007 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 19:11:40,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4730 states. [2022-04-06 19:11:42,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4730 to 4730. [2022-04-06 19:11:42,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4730 states, 3180 states have (on average 1.3452830188679246) internal successors, (4278), 3266 states have internal predecessors, (4278), 1228 states have call successors, (1228), 313 states have call predecessors, (1228), 321 states have return successors, (1239), 1202 states have call predecessors, (1239), 1223 states have call successors, (1239) [2022-04-06 19:11:42,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4730 states to 4730 states and 6745 transitions. [2022-04-06 19:11:42,734 INFO L78 Accepts]: Start accepts. Automaton has 4730 states and 6745 transitions. Word has length 107 [2022-04-06 19:11:42,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:11:42,734 INFO L478 AbstractCegarLoop]: Abstraction has 4730 states and 6745 transitions. [2022-04-06 19:11:42,735 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 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) [2022-04-06 19:11:42,735 INFO L276 IsEmpty]: Start isEmpty. Operand 4730 states and 6745 transitions. [2022-04-06 19:11:42,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-04-06 19:11:42,736 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:11:42,736 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:11:42,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-04-06 19:11:42,937 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 [2022-04-06 19:11:42,937 INFO L403 AbstractCegarLoop]: === Iteration 81 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:11:42,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:11:42,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1407795853, now seen corresponding path program 1 times [2022-04-06 19:11:42,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:11:42,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [712006865] [2022-04-06 19:11:42,940 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:11:42,940 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:11:42,940 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:11:42,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1407795853, now seen corresponding path program 2 times [2022-04-06 19:11:42,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:11:42,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302000387] [2022-04-06 19:11:42,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:11:42,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:11:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:43,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:11:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:43,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:11:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:43,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:11:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:43,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:11:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:43,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:11:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:43,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:43,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:11:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:43,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 19:11:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:43,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 19:11:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:43,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:43,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 19:11:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:43,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-06 19:11:43,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:11:43,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302000387] [2022-04-06 19:11:43,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302000387] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:11:43,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436006495] [2022-04-06 19:11:43,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:11:43,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:11:43,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:11:43,400 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) [2022-04-06 19:11:43,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-04-06 19:11:45,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:11:45,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:11:45,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-06 19:11:45,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:11:45,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 19:11:45,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:11:45,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436006495] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:11:45,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:11:45,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 20 [2022-04-06 19:11:45,621 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:11:45,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [712006865] [2022-04-06 19:11:45,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [712006865] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:11:45,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:11:45,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 19:11:45,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209615898] [2022-04-06 19:11:45,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:11:45,621 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 19:11:45,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:11:45,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 19:11:45,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2022-04-06 19:11:45,622 INFO L87 Difference]: Start difference. First operand 4730 states and 6745 transitions. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (11), 5 states have call predecessors, (11), 1 states have call successors, (11) [2022-04-06 19:11:47,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:11:47,508 INFO L93 Difference]: Finished difference Result 4787 states and 6813 transitions. [2022-04-06 19:11:47,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 19:11:47,508 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (11), 5 states have call predecessors, (11), 1 states have call successors, (11) Word has length 111 [2022-04-06 19:11:47,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:11:47,519 INFO L225 Difference]: With dead ends: 4787 [2022-04-06 19:11:47,519 INFO L226 Difference]: Without dead ends: 4742 [2022-04-06 19:11:47,521 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2022-04-06 19:11:47,521 INFO L913 BasicCegarLoop]: 2247 mSDtfsCounter, 23 mSDsluCounter, 20174 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 22421 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:11:47,522 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 22421 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:11:47,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4742 states. [2022-04-06 19:11:49,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4742 to 4721. [2022-04-06 19:11:49,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4721 states, 3173 states have (on average 1.3457295934446896) internal successors, (4270), 3259 states have internal predecessors, (4270), 1228 states have call successors, (1228), 313 states have call predecessors, (1228), 319 states have return successors, (1237), 1200 states have call predecessors, (1237), 1223 states have call successors, (1237) [2022-04-06 19:11:49,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4721 states to 4721 states and 6735 transitions. [2022-04-06 19:11:49,334 INFO L78 Accepts]: Start accepts. Automaton has 4721 states and 6735 transitions. Word has length 111 [2022-04-06 19:11:49,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:11:49,335 INFO L478 AbstractCegarLoop]: Abstraction has 4721 states and 6735 transitions. [2022-04-06 19:11:49,335 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (11), 5 states have call predecessors, (11), 1 states have call successors, (11) [2022-04-06 19:11:49,335 INFO L276 IsEmpty]: Start isEmpty. Operand 4721 states and 6735 transitions. [2022-04-06 19:11:49,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-04-06 19:11:49,336 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:11:49,336 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] [2022-04-06 19:11:49,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-04-06 19:11:49,536 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 [2022-04-06 19:11:49,537 INFO L403 AbstractCegarLoop]: === Iteration 82 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:11:49,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:11:49,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1045760415, now seen corresponding path program 1 times [2022-04-06 19:11:49,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:11:49,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [325241228] [2022-04-06 19:11:49,539 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:11:49,539 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:11:49,539 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:11:49,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1045760415, now seen corresponding path program 2 times [2022-04-06 19:11:49,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:11:49,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477640796] [2022-04-06 19:11:49,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:11:49,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:11:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:49,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:11:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:49,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:11:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:49,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:11:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:49,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:11:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:49,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:49,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:49,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:11:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:49,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 19:11:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:49,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-06 19:11:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:49,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:11:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:49,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 19:11:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:49,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-06 19:11:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:49,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:49,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:11:49,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:11:49,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477640796] [2022-04-06 19:11:49,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477640796] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:11:49,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845249918] [2022-04-06 19:11:49,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:11:49,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:11:49,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:11:49,962 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) [2022-04-06 19:11:49,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-04-06 19:11:52,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:11:52,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:11:52,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 1956 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 19:11:52,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:11:52,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:11:52,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:11:52,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845249918] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:11:52,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:11:52,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-04-06 19:11:52,197 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:11:52,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [325241228] [2022-04-06 19:11:52,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [325241228] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:11:52,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:11:52,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 19:11:52,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703170839] [2022-04-06 19:11:52,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:11:52,197 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 19:11:52,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:11:52,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 19:11:52,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-04-06 19:11:52,198 INFO L87 Difference]: Start difference. First operand 4721 states and 6735 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-06 19:11:53,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:11:53,979 INFO L93 Difference]: Finished difference Result 4750 states and 6767 transitions. [2022-04-06 19:11:53,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 19:11:53,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 107 [2022-04-06 19:11:53,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:11:53,988 INFO L225 Difference]: With dead ends: 4750 [2022-04-06 19:11:53,988 INFO L226 Difference]: Without dead ends: 4576 [2022-04-06 19:11:53,989 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-04-06 19:11:53,989 INFO L913 BasicCegarLoop]: 2223 mSDtfsCounter, 0 mSDsluCounter, 6664 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8887 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 19:11:53,989 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8887 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 19:11:53,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2022-04-06 19:11:55,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 4576. [2022-04-06 19:11:55,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4576 states, 3064 states have (on average 1.3485639686684072) internal successors, (4132), 3148 states have internal predecessors, (4132), 1205 states have call successors, (1205), 300 states have call predecessors, (1205), 306 states have return successors, (1214), 1177 states have call predecessors, (1214), 1200 states have call successors, (1214) [2022-04-06 19:11:55,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 6551 transitions. [2022-04-06 19:11:55,715 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 6551 transitions. Word has length 107 [2022-04-06 19:11:55,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:11:55,715 INFO L478 AbstractCegarLoop]: Abstraction has 4576 states and 6551 transitions. [2022-04-06 19:11:55,715 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-06 19:11:55,715 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 6551 transitions. [2022-04-06 19:11:55,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-04-06 19:11:55,716 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:11:55,716 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] [2022-04-06 19:11:55,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-04-06 19:11:55,917 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 [2022-04-06 19:11:55,917 INFO L403 AbstractCegarLoop]: === Iteration 83 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:11:55,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:11:55,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1391259352, now seen corresponding path program 1 times [2022-04-06 19:11:55,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:11:55,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1186032603] [2022-04-06 19:11:55,919 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:11:55,919 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:11:55,919 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:11:55,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1391259352, now seen corresponding path program 2 times [2022-04-06 19:11:55,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:11:55,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137527766] [2022-04-06 19:11:55,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:11:55,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:11:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:56,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:11:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:56,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:11:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:56,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:11:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:56,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:11:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:56,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:11:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:56,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:56,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-06 19:11:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:56,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-06 19:11:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:56,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:56,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-06 19:11:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:56,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:11:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:11:56,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:11:56,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:11:56,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137527766] [2022-04-06 19:11:56,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137527766] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:11:56,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521247495] [2022-04-06 19:11:56,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:11:56,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:11:56,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:11:56,321 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) [2022-04-06 19:11:56,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-04-06 19:11:58,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:11:58,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:11:58,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 1886 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-06 19:11:58,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:11:58,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:11:58,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:11:58,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521247495] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:11:58,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:11:58,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-04-06 19:11:58,593 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:11:58,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1186032603] [2022-04-06 19:11:58,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1186032603] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:11:58,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:11:58,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 19:11:58,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801099769] [2022-04-06 19:11:58,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:11:58,593 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 19:11:58,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:11:58,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 19:11:58,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-04-06 19:11:58,594 INFO L87 Difference]: Start difference. First operand 4576 states and 6551 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 7 states have internal predecessors, (85), 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) [2022-04-06 19:12:00,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:12:00,616 INFO L93 Difference]: Finished difference Result 4611 states and 6589 transitions. [2022-04-06 19:12:00,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 19:12:00,616 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 7 states have internal predecessors, (85), 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 109 [2022-04-06 19:12:00,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:12:00,626 INFO L225 Difference]: With dead ends: 4611 [2022-04-06 19:12:00,627 INFO L226 Difference]: Without dead ends: 4585 [2022-04-06 19:12:00,628 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-04-06 19:12:00,628 INFO L913 BasicCegarLoop]: 2112 mSDtfsCounter, 5 mSDsluCounter, 14746 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 16858 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 [2022-04-06 19:12:00,628 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 16858 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:12:00,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4585 states. [2022-04-06 19:12:02,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4585 to 4576. [2022-04-06 19:12:02,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4576 states, 3064 states have (on average 1.347911227154047) internal successors, (4130), 3148 states have internal predecessors, (4130), 1205 states have call successors, (1205), 300 states have call predecessors, (1205), 306 states have return successors, (1214), 1177 states have call predecessors, (1214), 1200 states have call successors, (1214) [2022-04-06 19:12:02,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 6549 transitions. [2022-04-06 19:12:02,499 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 6549 transitions. Word has length 109 [2022-04-06 19:12:02,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:12:02,499 INFO L478 AbstractCegarLoop]: Abstraction has 4576 states and 6549 transitions. [2022-04-06 19:12:02,499 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 7 states have internal predecessors, (85), 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) [2022-04-06 19:12:02,499 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 6549 transitions. [2022-04-06 19:12:02,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-04-06 19:12:02,500 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:12:02,500 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] [2022-04-06 19:12:02,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-04-06 19:12:02,701 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 [2022-04-06 19:12:02,701 INFO L403 AbstractCegarLoop]: === Iteration 84 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:12:02,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:12:02,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1827743078, now seen corresponding path program 1 times [2022-04-06 19:12:02,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:12:02,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1082213796] [2022-04-06 19:12:02,703 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:12:02,703 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:12:02,704 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:12:02,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1827743078, now seen corresponding path program 2 times [2022-04-06 19:12:02,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:12:02,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971497427] [2022-04-06 19:12:02,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:12:02,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:12:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:02,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:12:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:02,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:12:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:02,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:12:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:03,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:12:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:03,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:12:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:03,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:12:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:03,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-06 19:12:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:03,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-06 19:12:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:03,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:12:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:03,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-06 19:12:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:03,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:12:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:03,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:12:03,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:12:03,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971497427] [2022-04-06 19:12:03,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971497427] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:12:03,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989346935] [2022-04-06 19:12:03,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:12:03,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:12:03,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:12:03,119 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) [2022-04-06 19:12:03,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-04-06 19:12:05,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:12:05,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:12:05,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-06 19:12:05,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:12:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:12:05,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:12:05,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989346935] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:12:05,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:12:05,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-04-06 19:12:05,318 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:12:05,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1082213796] [2022-04-06 19:12:05,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1082213796] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:12:05,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:12:05,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 19:12:05,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358222677] [2022-04-06 19:12:05,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:12:05,319 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 19:12:05,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:12:05,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 19:12:05,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-04-06 19:12:05,319 INFO L87 Difference]: Start difference. First operand 4576 states and 6549 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 7 states have internal predecessors, (86), 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) [2022-04-06 19:12:07,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:12:07,344 INFO L93 Difference]: Finished difference Result 4612 states and 6588 transitions. [2022-04-06 19:12:07,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 19:12:07,345 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 7 states have internal predecessors, (86), 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 110 [2022-04-06 19:12:07,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:12:07,355 INFO L225 Difference]: With dead ends: 4612 [2022-04-06 19:12:07,355 INFO L226 Difference]: Without dead ends: 4585 [2022-04-06 19:12:07,356 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-04-06 19:12:07,356 INFO L913 BasicCegarLoop]: 2110 mSDtfsCounter, 5 mSDsluCounter, 14729 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 16839 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:12:07,356 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 16839 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:12:07,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4585 states. [2022-04-06 19:12:09,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4585 to 4576. [2022-04-06 19:12:09,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4576 states, 3064 states have (on average 1.3469321148825066) internal successors, (4127), 3148 states have internal predecessors, (4127), 1205 states have call successors, (1205), 300 states have call predecessors, (1205), 306 states have return successors, (1214), 1177 states have call predecessors, (1214), 1200 states have call successors, (1214) [2022-04-06 19:12:09,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 6546 transitions. [2022-04-06 19:12:09,128 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 6546 transitions. Word has length 110 [2022-04-06 19:12:09,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:12:09,129 INFO L478 AbstractCegarLoop]: Abstraction has 4576 states and 6546 transitions. [2022-04-06 19:12:09,129 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 7 states have internal predecessors, (86), 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) [2022-04-06 19:12:09,129 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 6546 transitions. [2022-04-06 19:12:09,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-04-06 19:12:09,130 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:12:09,130 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, 1, 1, 1] [2022-04-06 19:12:09,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-04-06 19:12:09,330 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 [2022-04-06 19:12:09,331 INFO L403 AbstractCegarLoop]: === Iteration 85 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:12:09,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:12:09,331 INFO L85 PathProgramCache]: Analyzing trace with hash 86479510, now seen corresponding path program 1 times [2022-04-06 19:12:09,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:12:09,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [970529046] [2022-04-06 19:12:09,333 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:12:09,333 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:12:09,333 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:12:09,334 INFO L85 PathProgramCache]: Analyzing trace with hash 86479510, now seen corresponding path program 2 times [2022-04-06 19:12:09,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:12:09,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099502106] [2022-04-06 19:12:09,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:12:09,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:12:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:09,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:12:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:09,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:12:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:09,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:12:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:09,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:12:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:09,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:12:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:09,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:12:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:09,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-06 19:12:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:09,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:12:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:09,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:12:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:09,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:12:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:09,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:12:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:09,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:12:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:09,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-06 19:12:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:09,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:12:09,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:12:09,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099502106] [2022-04-06 19:12:09,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099502106] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:12:09,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810199218] [2022-04-06 19:12:09,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:12:09,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:12:09,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:12:09,764 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) [2022-04-06 19:12:09,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-04-06 19:12:11,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:12:11,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:12:11,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 2243 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 19:12:11,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:12:12,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:12:12,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:12:12,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810199218] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:12:12,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:12:12,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2022-04-06 19:12:12,029 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:12:12,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [970529046] [2022-04-06 19:12:12,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [970529046] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:12:12,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:12:12,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 19:12:12,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111436933] [2022-04-06 19:12:12,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:12:12,030 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 19:12:12,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:12:12,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 19:12:12,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-04-06 19:12:12,030 INFO L87 Difference]: Start difference. First operand 4576 states and 6546 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-06 19:12:13,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:12:13,887 INFO L93 Difference]: Finished difference Result 7161 states and 10309 transitions. [2022-04-06 19:12:13,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 19:12:13,887 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2022-04-06 19:12:13,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:12:13,899 INFO L225 Difference]: With dead ends: 7161 [2022-04-06 19:12:13,899 INFO L226 Difference]: Without dead ends: 4603 [2022-04-06 19:12:13,905 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-04-06 19:12:13,905 INFO L913 BasicCegarLoop]: 2096 mSDtfsCounter, 10 mSDsluCounter, 8374 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 10470 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 19:12:13,905 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 10470 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 19:12:13,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4603 states. [2022-04-06 19:12:15,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4603 to 4591. [2022-04-06 19:12:15,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4591 states, 3075 states have (on average 1.3456910569105691) internal successors, (4138), 3159 states have internal predecessors, (4138), 1207 states have call successors, (1207), 300 states have call predecessors, (1207), 308 states have return successors, (1220), 1181 states have call predecessors, (1220), 1202 states have call successors, (1220) [2022-04-06 19:12:15,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4591 states to 4591 states and 6565 transitions. [2022-04-06 19:12:15,686 INFO L78 Accepts]: Start accepts. Automaton has 4591 states and 6565 transitions. Word has length 116 [2022-04-06 19:12:15,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:12:15,686 INFO L478 AbstractCegarLoop]: Abstraction has 4591 states and 6565 transitions. [2022-04-06 19:12:15,686 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-06 19:12:15,686 INFO L276 IsEmpty]: Start isEmpty. Operand 4591 states and 6565 transitions. [2022-04-06 19:12:15,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-04-06 19:12:15,688 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:12:15,688 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, 1, 1, 1] [2022-04-06 19:12:15,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-04-06 19:12:15,888 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 [2022-04-06 19:12:15,888 INFO L403 AbstractCegarLoop]: === Iteration 86 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:12:15,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:12:15,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1193384168, now seen corresponding path program 1 times [2022-04-06 19:12:15,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:12:15,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1591662443] [2022-04-06 19:12:15,891 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:12:15,891 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:12:15,891 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:12:15,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1193384168, now seen corresponding path program 2 times [2022-04-06 19:12:15,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:12:15,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181798328] [2022-04-06 19:12:15,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:12:15,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:12:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:16,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:12:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:16,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:12:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:16,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:12:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:16,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:12:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:16,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:12:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:16,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:12:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:16,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-06 19:12:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:16,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:12:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:16,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:12:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:16,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:12:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:16,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:12:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:16,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:12:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:16,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-06 19:12:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:16,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:12:16,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:12:16,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181798328] [2022-04-06 19:12:16,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181798328] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:12:16,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620243661] [2022-04-06 19:12:16,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:12:16,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:12:16,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:12:16,323 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) [2022-04-06 19:12:16,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-04-06 19:12:18,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:12:18,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:12:18,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 2240 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-06 19:12:18,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:12:18,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:12:18,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:12:18,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620243661] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:12:18,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:12:18,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2022-04-06 19:12:18,650 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:12:18,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1591662443] [2022-04-06 19:12:18,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1591662443] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:12:18,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:12:18,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 19:12:18,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069589310] [2022-04-06 19:12:18,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:12:18,651 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 19:12:18,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:12:18,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 19:12:18,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-04-06 19:12:18,651 INFO L87 Difference]: Start difference. First operand 4591 states and 6565 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-06 19:12:20,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:12:20,549 INFO L93 Difference]: Finished difference Result 5076 states and 7216 transitions. [2022-04-06 19:12:20,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 19:12:20,549 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2022-04-06 19:12:20,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:12:20,560 INFO L225 Difference]: With dead ends: 5076 [2022-04-06 19:12:20,560 INFO L226 Difference]: Without dead ends: 4694 [2022-04-06 19:12:20,562 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2022-04-06 19:12:20,562 INFO L913 BasicCegarLoop]: 2109 mSDtfsCounter, 30 mSDsluCounter, 14730 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 16839 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:12:20,562 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 16839 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:12:20,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2022-04-06 19:12:22,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4624. [2022-04-06 19:12:22,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4624 states, 3101 states have (on average 1.3431151241534989) internal successors, (4165), 3185 states have internal predecessors, (4165), 1209 states have call successors, (1209), 300 states have call predecessors, (1209), 313 states have return successors, (1232), 1188 states have call predecessors, (1232), 1204 states have call successors, (1232) [2022-04-06 19:12:22,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4624 states to 4624 states and 6606 transitions. [2022-04-06 19:12:22,645 INFO L78 Accepts]: Start accepts. Automaton has 4624 states and 6606 transitions. Word has length 116 [2022-04-06 19:12:22,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:12:22,645 INFO L478 AbstractCegarLoop]: Abstraction has 4624 states and 6606 transitions. [2022-04-06 19:12:22,645 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-06 19:12:22,646 INFO L276 IsEmpty]: Start isEmpty. Operand 4624 states and 6606 transitions. [2022-04-06 19:12:22,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-04-06 19:12:22,647 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:12:22,647 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, 1, 1, 1, 1] [2022-04-06 19:12:22,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-04-06 19:12:22,847 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 [2022-04-06 19:12:22,848 INFO L403 AbstractCegarLoop]: === Iteration 87 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:12:22,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:12:22,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1243512838, now seen corresponding path program 1 times [2022-04-06 19:12:22,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:12:22,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1345756062] [2022-04-06 19:12:22,850 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:12:22,850 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:12:22,850 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:12:22,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1243512838, now seen corresponding path program 2 times [2022-04-06 19:12:22,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:12:22,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050166984] [2022-04-06 19:12:22,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:12:22,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:12:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:23,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:12:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:23,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:12:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:23,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:12:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:23,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:12:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:23,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:12:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:23,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:12:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:23,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-06 19:12:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:23,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:12:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:23,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:12:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:23,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:12:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:23,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:12:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:23,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:12:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:23,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-06 19:12:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:23,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:12:23,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:12:23,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050166984] [2022-04-06 19:12:23,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050166984] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:12:23,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670862390] [2022-04-06 19:12:23,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:12:23,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:12:23,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:12:23,343 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) [2022-04-06 19:12:23,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-04-06 19:12:25,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:12:25,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:12:25,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 2241 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 19:12:25,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:12:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:12:25,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:12:25,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670862390] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:12:25,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:12:25,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2022-04-06 19:12:25,626 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:12:25,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1345756062] [2022-04-06 19:12:25,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1345756062] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:12:25,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:12:25,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 19:12:25,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093397477] [2022-04-06 19:12:25,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:12:25,627 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 19:12:25,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:12:25,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 19:12:25,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-04-06 19:12:25,627 INFO L87 Difference]: Start difference. First operand 4624 states and 6606 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-06 19:12:27,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:12:27,345 INFO L93 Difference]: Finished difference Result 7233 states and 10396 transitions. [2022-04-06 19:12:27,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 19:12:27,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2022-04-06 19:12:27,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:12:27,358 INFO L225 Difference]: With dead ends: 7233 [2022-04-06 19:12:27,358 INFO L226 Difference]: Without dead ends: 4616 [2022-04-06 19:12:27,365 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-04-06 19:12:27,365 INFO L913 BasicCegarLoop]: 2109 mSDtfsCounter, 15 mSDsluCounter, 6307 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8416 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 19:12:27,365 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 8416 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 19:12:27,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4616 states. [2022-04-06 19:12:29,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4616 to 4616. [2022-04-06 19:12:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4616 states, 3093 states have (on average 1.34303265438086) internal successors, (4154), 3177 states have internal predecessors, (4154), 1209 states have call successors, (1209), 300 states have call predecessors, (1209), 313 states have return successors, (1232), 1188 states have call predecessors, (1232), 1204 states have call successors, (1232) [2022-04-06 19:12:29,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4616 states to 4616 states and 6595 transitions. [2022-04-06 19:12:29,150 INFO L78 Accepts]: Start accepts. Automaton has 4616 states and 6595 transitions. Word has length 117 [2022-04-06 19:12:29,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:12:29,150 INFO L478 AbstractCegarLoop]: Abstraction has 4616 states and 6595 transitions. [2022-04-06 19:12:29,150 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-06 19:12:29,150 INFO L276 IsEmpty]: Start isEmpty. Operand 4616 states and 6595 transitions. [2022-04-06 19:12:29,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-04-06 19:12:29,151 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:12:29,151 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, 1] [2022-04-06 19:12:29,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-04-06 19:12:29,352 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 [2022-04-06 19:12:29,352 INFO L403 AbstractCegarLoop]: === Iteration 88 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:12:29,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:12:29,352 INFO L85 PathProgramCache]: Analyzing trace with hash 2027055602, now seen corresponding path program 1 times [2022-04-06 19:12:29,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:12:29,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1199703261] [2022-04-06 19:12:29,355 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:12:29,355 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:12:29,355 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:12:29,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2027055602, now seen corresponding path program 2 times [2022-04-06 19:12:29,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:12:29,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392579834] [2022-04-06 19:12:29,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:12:29,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:12:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:29,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:12:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:29,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:12:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:29,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:12:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:29,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:12:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:29,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:12:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:29,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:12:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:29,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-06 19:12:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:29,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 19:12:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:29,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-06 19:12:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:29,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:12:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:29,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-06 19:12:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:29,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:12:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:29,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:12:29,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:12:29,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392579834] [2022-04-06 19:12:29,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392579834] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:12:29,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:12:29,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 19:12:29,828 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:12:29,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1199703261] [2022-04-06 19:12:29,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1199703261] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:12:29,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:12:29,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 19:12:29,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328024141] [2022-04-06 19:12:29,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:12:29,829 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 19:12:29,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:12:29,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 19:12:29,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-04-06 19:12:29,829 INFO L87 Difference]: Start difference. First operand 4616 states and 6595 transitions. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (14), 9 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:12:35,781 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 [] [2022-04-06 19:12:37,806 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:12:38,871 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:12:54,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:12:54,761 INFO L93 Difference]: Finished difference Result 7011 states and 10200 transitions. [2022-04-06 19:12:54,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 19:12:54,762 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (14), 9 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-04-06 19:12:54,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:12:54,778 INFO L225 Difference]: With dead ends: 7011 [2022-04-06 19:12:54,778 INFO L226 Difference]: Without dead ends: 5962 [2022-04-06 19:12:54,782 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2022-04-06 19:12:54,782 INFO L913 BasicCegarLoop]: 1645 mSDtfsCounter, 3771 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 5211 mSolverCounterSat, 3248 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3915 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 8461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3248 IncrementalHoareTripleChecker+Valid, 5211 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2022-04-06 19:12:54,782 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3915 Valid, 2053 Invalid, 8461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3248 Valid, 5211 Invalid, 2 Unknown, 0 Unchecked, 20.9s Time] [2022-04-06 19:12:54,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5962 states. [2022-04-06 19:12:57,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5962 to 4616. [2022-04-06 19:12:57,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4616 states, 3093 states have (on average 1.3417394115745231) internal successors, (4150), 3177 states have internal predecessors, (4150), 1209 states have call successors, (1209), 300 states have call predecessors, (1209), 313 states have return successors, (1232), 1188 states have call predecessors, (1232), 1204 states have call successors, (1232) [2022-04-06 19:12:57,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4616 states to 4616 states and 6591 transitions. [2022-04-06 19:12:57,077 INFO L78 Accepts]: Start accepts. Automaton has 4616 states and 6591 transitions. Word has length 114 [2022-04-06 19:12:57,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:12:57,077 INFO L478 AbstractCegarLoop]: Abstraction has 4616 states and 6591 transitions. [2022-04-06 19:12:57,077 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (14), 9 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:12:57,077 INFO L276 IsEmpty]: Start isEmpty. Operand 4616 states and 6591 transitions. [2022-04-06 19:12:57,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-04-06 19:12:57,079 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:12:57,079 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] [2022-04-06 19:12:57,079 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-04-06 19:12:57,079 INFO L403 AbstractCegarLoop]: === Iteration 89 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:12:57,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:12:57,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1807239528, now seen corresponding path program 1 times [2022-04-06 19:12:57,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:12:57,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [496284937] [2022-04-06 19:12:57,081 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:12:57,081 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:12:57,082 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:12:57,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1807239528, now seen corresponding path program 2 times [2022-04-06 19:12:57,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:12:57,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182655216] [2022-04-06 19:12:57,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:12:57,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:12:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:57,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:12:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:57,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:12:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:57,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:12:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:57,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:12:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:57,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:12:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:57,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:12:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:57,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-06 19:12:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:57,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-06 19:12:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:57,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:12:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:57,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-06 19:12:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:57,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:12:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:12:57,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:12:57,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:12:57,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182655216] [2022-04-06 19:12:57,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182655216] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:12:57,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206676578] [2022-04-06 19:12:57,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:12:57,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:12:57,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:12:57,508 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) [2022-04-06 19:12:57,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-04-06 19:12:59,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:12:59,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:12:59,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 1909 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-06 19:12:59,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:12:59,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:12:59,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:12:59,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206676578] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:12:59,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:12:59,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-04-06 19:12:59,850 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:12:59,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [496284937] [2022-04-06 19:12:59,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [496284937] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:12:59,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:12:59,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 19:12:59,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420899334] [2022-04-06 19:12:59,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:12:59,851 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 19:12:59,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:12:59,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 19:12:59,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-04-06 19:12:59,851 INFO L87 Difference]: Start difference. First operand 4616 states and 6591 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 7 states have internal predecessors, (89), 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) [2022-04-06 19:13:02,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:13:02,230 INFO L93 Difference]: Finished difference Result 4660 states and 6638 transitions. [2022-04-06 19:13:02,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 19:13:02,231 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 7 states have internal predecessors, (89), 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 113 [2022-04-06 19:13:02,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:13:02,241 INFO L225 Difference]: With dead ends: 4660 [2022-04-06 19:13:02,241 INFO L226 Difference]: Without dead ends: 4611 [2022-04-06 19:13:02,243 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-04-06 19:13:02,243 INFO L913 BasicCegarLoop]: 2112 mSDtfsCounter, 46 mSDsluCounter, 14688 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 16800 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:13:02,243 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 16800 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:13:02,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4611 states. [2022-04-06 19:13:04,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4611 to 4594. [2022-04-06 19:13:04,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4594 states, 3075 states have (on average 1.3404878048780489) internal successors, (4122), 3159 states have internal predecessors, (4122), 1205 states have call successors, (1205), 300 states have call predecessors, (1205), 313 states have return successors, (1228), 1184 states have call predecessors, (1228), 1200 states have call successors, (1228) [2022-04-06 19:13:04,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4594 states to 4594 states and 6555 transitions. [2022-04-06 19:13:04,428 INFO L78 Accepts]: Start accepts. Automaton has 4594 states and 6555 transitions. Word has length 113 [2022-04-06 19:13:04,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:13:04,428 INFO L478 AbstractCegarLoop]: Abstraction has 4594 states and 6555 transitions. [2022-04-06 19:13:04,428 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 7 states have internal predecessors, (89), 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) [2022-04-06 19:13:04,428 INFO L276 IsEmpty]: Start isEmpty. Operand 4594 states and 6555 transitions. [2022-04-06 19:13:04,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-04-06 19:13:04,429 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:13:04,429 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] [2022-04-06 19:13:04,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-04-06 19:13:04,630 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:13:04,630 INFO L403 AbstractCegarLoop]: === Iteration 90 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:13:04,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:13:04,630 INFO L85 PathProgramCache]: Analyzing trace with hash -515371403, now seen corresponding path program 1 times [2022-04-06 19:13:04,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:13:04,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1294282594] [2022-04-06 19:13:04,632 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:13:04,632 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:13:04,632 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:13:04,632 INFO L85 PathProgramCache]: Analyzing trace with hash -515371403, now seen corresponding path program 2 times [2022-04-06 19:13:04,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:13:04,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613571077] [2022-04-06 19:13:04,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:13:04,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:13:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:04,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:13:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:04,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:13:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:04,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:13:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:04,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:13:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:04,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:13:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:04,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:13:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:05,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-06 19:13:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:05,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-06 19:13:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:05,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:13:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:05,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-06 19:13:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:05,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:13:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:13:05,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:13:05,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613571077] [2022-04-06 19:13:05,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613571077] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:13:05,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984372154] [2022-04-06 19:13:05,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:13:05,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:13:05,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:13:05,039 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) [2022-04-06 19:13:05,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-04-06 19:13:07,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:13:07,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:13:07,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 1888 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-06 19:13:07,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:13:07,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:13:07,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:13:07,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984372154] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:13:07,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:13:07,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-04-06 19:13:07,411 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:13:07,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1294282594] [2022-04-06 19:13:07,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1294282594] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:13:07,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:13:07,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 19:13:07,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872629445] [2022-04-06 19:13:07,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:13:07,411 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 19:13:07,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:13:07,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 19:13:07,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-04-06 19:13:07,412 INFO L87 Difference]: Start difference. First operand 4594 states and 6555 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 7 states have internal predecessors, (89), 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) [2022-04-06 19:13:09,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:13:09,900 INFO L93 Difference]: Finished difference Result 4622 states and 6586 transitions. [2022-04-06 19:13:09,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 19:13:09,901 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 7 states have internal predecessors, (89), 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 113 [2022-04-06 19:13:09,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:13:09,908 INFO L225 Difference]: With dead ends: 4622 [2022-04-06 19:13:09,909 INFO L226 Difference]: Without dead ends: 4489 [2022-04-06 19:13:09,910 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-04-06 19:13:09,910 INFO L913 BasicCegarLoop]: 2109 mSDtfsCounter, 33 mSDsluCounter, 14691 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 16800 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 19:13:09,910 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 16800 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 19:13:09,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2022-04-06 19:13:12,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 4483. [2022-04-06 19:13:12,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4483 states, 3009 states have (on average 1.3403123961448986) internal successors, (4033), 3090 states have internal predecessors, (4033), 1165 states have call successors, (1165), 296 states have call predecessors, (1165), 308 states have return successors, (1187), 1143 states have call predecessors, (1187), 1160 states have call successors, (1187) [2022-04-06 19:13:12,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4483 states to 4483 states and 6385 transitions. [2022-04-06 19:13:12,046 INFO L78 Accepts]: Start accepts. Automaton has 4483 states and 6385 transitions. Word has length 113 [2022-04-06 19:13:12,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:13:12,046 INFO L478 AbstractCegarLoop]: Abstraction has 4483 states and 6385 transitions. [2022-04-06 19:13:12,046 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 7 states have internal predecessors, (89), 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) [2022-04-06 19:13:12,046 INFO L276 IsEmpty]: Start isEmpty. Operand 4483 states and 6385 transitions. [2022-04-06 19:13:12,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-04-06 19:13:12,047 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:13:12,047 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:13:12,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-04-06 19:13:12,251 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:13:12,251 INFO L403 AbstractCegarLoop]: === Iteration 91 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:13:12,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:13:12,251 INFO L85 PathProgramCache]: Analyzing trace with hash 511408064, now seen corresponding path program 1 times [2022-04-06 19:13:12,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:13:12,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2014724344] [2022-04-06 19:13:12,253 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:13:12,253 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:13:12,254 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:13:12,254 INFO L85 PathProgramCache]: Analyzing trace with hash 511408064, now seen corresponding path program 2 times [2022-04-06 19:13:12,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:13:12,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954285012] [2022-04-06 19:13:12,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:13:12,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:13:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:12,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:13:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:12,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:13:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:12,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:13:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:12,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:13:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:12,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:13:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:12,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:13:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:12,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-06 19:13:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:12,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 19:13:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:12,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-06 19:13:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:12,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:13:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:12,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-06 19:13:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:12,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:13:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:12,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:13:12,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:13:12,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954285012] [2022-04-06 19:13:12,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954285012] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:13:12,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894050113] [2022-04-06 19:13:12,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:13:12,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:13:12,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:13:12,657 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) [2022-04-06 19:13:12,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-04-06 19:13:14,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:13:14,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:13:14,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 1966 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-06 19:13:14,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:13:15,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:13:15,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:13:15,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894050113] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:13:15,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:13:15,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-04-06 19:13:15,012 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:13:15,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2014724344] [2022-04-06 19:13:15,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2014724344] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:13:15,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:13:15,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 19:13:15,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504802201] [2022-04-06 19:13:15,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:13:15,012 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 19:13:15,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:13:15,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 19:13:15,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-06 19:13:15,012 INFO L87 Difference]: Start difference. First operand 4483 states and 6385 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:13:17,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:13:17,210 INFO L93 Difference]: Finished difference Result 5604 states and 7928 transitions. [2022-04-06 19:13:17,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 19:13:17,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2022-04-06 19:13:17,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:13:17,220 INFO L225 Difference]: With dead ends: 5604 [2022-04-06 19:13:17,221 INFO L226 Difference]: Without dead ends: 4555 [2022-04-06 19:13:17,224 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-06 19:13:17,224 INFO L913 BasicCegarLoop]: 2119 mSDtfsCounter, 22 mSDsluCounter, 2087 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 4206 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 19:13:17,224 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 4206 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 19:13:17,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4555 states. [2022-04-06 19:13:19,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4555 to 4491. [2022-04-06 19:13:19,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4491 states, 3017 states have (on average 1.3394100099436526) internal successors, (4041), 3098 states have internal predecessors, (4041), 1165 states have call successors, (1165), 296 states have call predecessors, (1165), 308 states have return successors, (1187), 1143 states have call predecessors, (1187), 1160 states have call successors, (1187) [2022-04-06 19:13:19,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4491 states to 4491 states and 6393 transitions. [2022-04-06 19:13:19,364 INFO L78 Accepts]: Start accepts. Automaton has 4491 states and 6393 transitions. Word has length 115 [2022-04-06 19:13:19,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:13:19,364 INFO L478 AbstractCegarLoop]: Abstraction has 4491 states and 6393 transitions. [2022-04-06 19:13:19,364 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:13:19,364 INFO L276 IsEmpty]: Start isEmpty. Operand 4491 states and 6393 transitions. [2022-04-06 19:13:19,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-04-06 19:13:19,366 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:13:19,366 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:13:19,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-04-06 19:13:19,566 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:13:19,566 INFO L403 AbstractCegarLoop]: === Iteration 92 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:13:19,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:13:19,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1433703425, now seen corresponding path program 1 times [2022-04-06 19:13:19,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:13:19,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1252149987] [2022-04-06 19:13:19,569 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:13:19,569 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:13:19,569 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:13:19,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1433703425, now seen corresponding path program 2 times [2022-04-06 19:13:19,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:13:19,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156216590] [2022-04-06 19:13:19,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:13:19,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:13:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:19,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:13:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:19,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:13:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:19,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:13:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:19,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:13:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:19,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:13:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:19,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:13:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:19,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-06 19:13:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:19,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:13:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:19,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:13:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:19,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:13:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:19,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:13:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:19,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:13:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:19,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-04-06 19:13:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:19,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-06 19:13:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:13:20,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:13:20,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156216590] [2022-04-06 19:13:20,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156216590] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:13:20,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073756828] [2022-04-06 19:13:20,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:13:20,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:13:20,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:13:20,007 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) [2022-04-06 19:13:20,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-04-06 19:13:22,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:13:22,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:13:22,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 2253 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-06 19:13:22,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:13:22,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:13:22,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:13:22,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073756828] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:13:22,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:13:22,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-04-06 19:13:22,641 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:13:22,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1252149987] [2022-04-06 19:13:22,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1252149987] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:13:22,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:13:22,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 19:13:22,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238717443] [2022-04-06 19:13:22,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:13:22,641 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 19:13:22,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:13:22,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 19:13:22,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-04-06 19:13:22,642 INFO L87 Difference]: Start difference. First operand 4491 states and 6393 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-04-06 19:13:26,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:13:26,311 INFO L93 Difference]: Finished difference Result 7076 states and 10150 transitions. [2022-04-06 19:13:26,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 19:13:26,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2022-04-06 19:13:26,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:13:26,322 INFO L225 Difference]: With dead ends: 7076 [2022-04-06 19:13:26,323 INFO L226 Difference]: Without dead ends: 4463 [2022-04-06 19:13:26,328 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-04-06 19:13:26,328 INFO L913 BasicCegarLoop]: 2093 mSDtfsCounter, 2018 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 3391 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-06 19:13:26,328 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2019 Valid, 3391 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-06 19:13:26,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4463 states. [2022-04-06 19:13:28,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4463 to 4463. [2022-04-06 19:13:28,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4463 states, 2996 states have (on average 1.3401201602136181) internal successors, (4015), 3076 states have internal predecessors, (4015), 1162 states have call successors, (1162), 295 states have call predecessors, (1162), 304 states have return successors, (1178), 1138 states have call predecessors, (1178), 1157 states have call successors, (1178) [2022-04-06 19:13:28,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 6355 transitions. [2022-04-06 19:13:28,437 INFO L78 Accepts]: Start accepts. Automaton has 4463 states and 6355 transitions. Word has length 121 [2022-04-06 19:13:28,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:13:28,437 INFO L478 AbstractCegarLoop]: Abstraction has 4463 states and 6355 transitions. [2022-04-06 19:13:28,437 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-04-06 19:13:28,437 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states and 6355 transitions. [2022-04-06 19:13:28,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-04-06 19:13:28,438 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:13:28,438 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, 1, 1, 1, 1] [2022-04-06 19:13:28,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-04-06 19:13:28,639 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable91 [2022-04-06 19:13:28,639 INFO L403 AbstractCegarLoop]: === Iteration 93 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:13:28,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:13:28,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1717758171, now seen corresponding path program 1 times [2022-04-06 19:13:28,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:13:28,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [429721369] [2022-04-06 19:13:28,642 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:13:28,642 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:13:28,642 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:13:28,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1717758171, now seen corresponding path program 2 times [2022-04-06 19:13:28,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:13:28,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586106536] [2022-04-06 19:13:28,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:13:28,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:13:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:28,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:13:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:28,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:13:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:28,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:13:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:28,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:13:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:29,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:13:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:29,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:13:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:29,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:13:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:29,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 19:13:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:29,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-06 19:13:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:29,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:13:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:29,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-06 19:13:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:29,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:13:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:13:29,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:13:29,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:13:29,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586106536] [2022-04-06 19:13:29,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586106536] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:13:29,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:13:29,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 19:13:29,244 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:13:29,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [429721369] [2022-04-06 19:13:29,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [429721369] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:13:29,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:13:29,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 19:13:29,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281772747] [2022-04-06 19:13:29,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:13:29,244 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 19:13:29,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:13:29,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 19:13:29,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-04-06 19:13:29,245 INFO L87 Difference]: Start difference. First operand 4463 states and 6355 transitions. Second operand has 16 states, 16 states have (on average 5.6875) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (14), 10 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-06 19:13:37,699 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:13:39,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:13:41,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:13:43,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:13:44,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:13:46,420 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:13:48,445 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:13:50,337 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:13:51,936 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:14:16,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:14:16,490 INFO L93 Difference]: Finished difference Result 5745 states and 8372 transitions. [2022-04-06 19:14:16,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 19:14:16,491 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.6875) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (14), 10 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2022-04-06 19:14:16,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:14:16,502 INFO L225 Difference]: With dead ends: 5745 [2022-04-06 19:14:16,503 INFO L226 Difference]: Without dead ends: 5654 [2022-04-06 19:14:16,504 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-04-06 19:14:16,504 INFO L913 BasicCegarLoop]: 1646 mSDtfsCounter, 6699 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 16548 mSolverCounterSat, 5370 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6852 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 21922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5370 IncrementalHoareTripleChecker+Valid, 16548 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.8s IncrementalHoareTripleChecker+Time [2022-04-06 19:14:16,504 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6852 Valid, 2735 Invalid, 21922 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5370 Valid, 16548 Invalid, 4 Unknown, 0 Unchecked, 42.8s Time] [2022-04-06 19:14:16,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2022-04-06 19:14:18,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 4463. [2022-04-06 19:14:18,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4463 states, 2996 states have (on average 1.3397863818424567) internal successors, (4014), 3076 states have internal predecessors, (4014), 1162 states have call successors, (1162), 295 states have call predecessors, (1162), 304 states have return successors, (1178), 1138 states have call predecessors, (1178), 1157 states have call successors, (1178) [2022-04-06 19:14:18,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 6354 transitions. [2022-04-06 19:14:18,951 INFO L78 Accepts]: Start accepts. Automaton has 4463 states and 6354 transitions. Word has length 117 [2022-04-06 19:14:18,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:14:18,951 INFO L478 AbstractCegarLoop]: Abstraction has 4463 states and 6354 transitions. [2022-04-06 19:14:18,951 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.6875) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (14), 10 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2022-04-06 19:14:18,951 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states and 6354 transitions. [2022-04-06 19:14:18,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-04-06 19:14:18,952 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:14:18,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:14:18,953 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-04-06 19:14:18,953 INFO L403 AbstractCegarLoop]: === Iteration 94 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:14:18,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:14:18,953 INFO L85 PathProgramCache]: Analyzing trace with hash -91539494, now seen corresponding path program 1 times [2022-04-06 19:14:18,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:14:18,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2137892269] [2022-04-06 19:14:18,955 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:14:18,956 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:14:18,956 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:14:18,956 INFO L85 PathProgramCache]: Analyzing trace with hash -91539494, now seen corresponding path program 2 times [2022-04-06 19:14:18,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:14:18,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108619322] [2022-04-06 19:14:18,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:14:18,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:14:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:19,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:14:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:19,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:14:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:19,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:14:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:19,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-06 19:14:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:19,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:14:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:19,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:14:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:19,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-06 19:14:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:19,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:14:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:19,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:14:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:19,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:14:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:19,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:14:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:19,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:14:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:19,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-04-06 19:14:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:19,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-06 19:14:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:19,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:14:19,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:14:19,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108619322] [2022-04-06 19:14:19,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108619322] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:14:19,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765064328] [2022-04-06 19:14:19,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:14:19,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:14:19,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:14:19,524 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) [2022-04-06 19:14:19,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-04-06 19:14:21,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:14:21,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:14:21,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 2258 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 19:14:21,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:14:21,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:14:21,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:14:21,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765064328] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:14:21,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:14:21,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 17 [2022-04-06 19:14:21,953 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:14:21,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2137892269] [2022-04-06 19:14:21,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2137892269] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:14:21,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:14:21,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 19:14:21,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773347958] [2022-04-06 19:14:21,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:14:21,953 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 19:14:21,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:14:21,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 19:14:21,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-04-06 19:14:21,954 INFO L87 Difference]: Start difference. First operand 4463 states and 6354 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-06 19:14:24,872 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:14:26,895 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 [] [2022-04-06 19:14:32,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:14:32,430 INFO L93 Difference]: Finished difference Result 5786 states and 8264 transitions. [2022-04-06 19:14:32,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 19:14:32,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 123 [2022-04-06 19:14:32,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:14:32,437 INFO L225 Difference]: With dead ends: 5786 [2022-04-06 19:14:32,438 INFO L226 Difference]: Without dead ends: 3198 [2022-04-06 19:14:32,443 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-04-06 19:14:32,443 INFO L913 BasicCegarLoop]: 1755 mSDtfsCounter, 1200 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 4151 mSolverCounterSat, 393 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 4545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 4151 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-04-06 19:14:32,443 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 2351 Invalid, 4545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 4151 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-04-06 19:14:32,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3198 states. [2022-04-06 19:14:33,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3198 to 1932. [2022-04-06 19:14:33,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1314 states have (on average 1.2990867579908676) internal successors, (1707), 1348 states have internal predecessors, (1707), 469 states have call successors, (469), 143 states have call predecessors, (469), 148 states have return successors, (473), 461 states have call predecessors, (473), 465 states have call successors, (473) [2022-04-06 19:14:33,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 2649 transitions. [2022-04-06 19:14:33,510 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 2649 transitions. Word has length 123 [2022-04-06 19:14:33,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:14:33,511 INFO L478 AbstractCegarLoop]: Abstraction has 1932 states and 2649 transitions. [2022-04-06 19:14:33,511 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-06 19:14:33,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 2649 transitions. [2022-04-06 19:14:33,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-04-06 19:14:33,512 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:14:33,512 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, 1, 1, 1, 1, 1, 1] [2022-04-06 19:14:33,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-04-06 19:14:33,712 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:14:33,712 INFO L403 AbstractCegarLoop]: === Iteration 95 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:14:33,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:14:33,713 INFO L85 PathProgramCache]: Analyzing trace with hash 625918942, now seen corresponding path program 1 times [2022-04-06 19:14:33,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:14:33,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [402610683] [2022-04-06 19:14:33,715 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:14:33,715 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:14:33,715 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:14:33,715 INFO L85 PathProgramCache]: Analyzing trace with hash 625918942, now seen corresponding path program 2 times [2022-04-06 19:14:33,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:14:33,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27319862] [2022-04-06 19:14:33,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:14:33,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:14:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:33,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:14:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:33,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:14:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:33,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:14:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:34,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:14:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:34,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:14:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:34,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:14:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:34,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-06 19:14:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:34,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 19:14:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:34,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-06 19:14:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:34,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:14:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:34,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-06 19:14:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:34,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:14:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:34,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:14:34,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:14:34,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27319862] [2022-04-06 19:14:34,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27319862] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:14:34,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748732781] [2022-04-06 19:14:34,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:14:34,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:14:34,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:14:34,115 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) [2022-04-06 19:14:34,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-04-06 19:14:36,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:14:36,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:14:36,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 1963 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 19:14:36,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:14:36,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:14:36,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:14:36,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748732781] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:14:36,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:14:36,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-04-06 19:14:36,524 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:14:36,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [402610683] [2022-04-06 19:14:36,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [402610683] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:14:36,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:14:36,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 19:14:36,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780293116] [2022-04-06 19:14:36,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:14:36,524 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 19:14:36,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:14:36,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 19:14:36,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-04-06 19:14:36,525 INFO L87 Difference]: Start difference. First operand 1932 states and 2649 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:14:37,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:14:37,615 INFO L93 Difference]: Finished difference Result 1997 states and 2718 transitions. [2022-04-06 19:14:37,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 19:14:37,617 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-04-06 19:14:37,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:14:37,621 INFO L225 Difference]: With dead ends: 1997 [2022-04-06 19:14:37,621 INFO L226 Difference]: Without dead ends: 1923 [2022-04-06 19:14:37,621 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-04-06 19:14:37,621 INFO L913 BasicCegarLoop]: 2100 mSDtfsCounter, 4 mSDsluCounter, 8371 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10471 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 19:14:37,622 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 10471 Invalid, 37 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 19:14:37,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2022-04-06 19:14:38,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1920. [2022-04-06 19:14:38,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1304 states have (on average 1.299079754601227) internal successors, (1694), 1338 states have internal predecessors, (1694), 467 states have call successors, (467), 143 states have call predecessors, (467), 148 states have return successors, (471), 459 states have call predecessors, (471), 463 states have call successors, (471) [2022-04-06 19:14:38,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2632 transitions. [2022-04-06 19:14:38,660 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2632 transitions. Word has length 119 [2022-04-06 19:14:38,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:14:38,660 INFO L478 AbstractCegarLoop]: Abstraction has 1920 states and 2632 transitions. [2022-04-06 19:14:38,660 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:14:38,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2632 transitions. [2022-04-06 19:14:38,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-04-06 19:14:38,661 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:14:38,661 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, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:14:38,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-04-06 19:14:38,861 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:14:38,862 INFO L403 AbstractCegarLoop]: === Iteration 96 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:14:38,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:14:38,862 INFO L85 PathProgramCache]: Analyzing trace with hash 503729061, now seen corresponding path program 1 times [2022-04-06 19:14:38,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:14:38,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [408336940] [2022-04-06 19:14:38,864 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:14:38,864 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:14:38,864 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:14:38,864 INFO L85 PathProgramCache]: Analyzing trace with hash 503729061, now seen corresponding path program 2 times [2022-04-06 19:14:38,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:14:38,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608125009] [2022-04-06 19:14:38,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:14:38,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:14:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:39,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:14:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:39,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:14:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:39,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:14:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:39,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:14:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:39,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:14:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:39,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:14:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:39,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:14:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:39,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 19:14:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:39,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-06 19:14:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:39,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:14:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:39,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-06 19:14:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:39,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:14:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:39,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:14:39,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:14:39,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608125009] [2022-04-06 19:14:39,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608125009] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:14:39,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731597720] [2022-04-06 19:14:39,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:14:39,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:14:39,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:14:39,299 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) [2022-04-06 19:14:39,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-04-06 19:14:41,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:14:41,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:14:41,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-06 19:14:41,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:14:41,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:14:41,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:14:41,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731597720] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:14:41,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:14:41,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2022-04-06 19:14:41,820 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:14:41,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [408336940] [2022-04-06 19:14:41,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [408336940] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:14:41,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:14:41,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 19:14:41,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593211215] [2022-04-06 19:14:41,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:14:41,821 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 19:14:41,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:14:41,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 19:14:41,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-04-06 19:14:41,821 INFO L87 Difference]: Start difference. First operand 1920 states and 2632 transitions. Second operand has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 9 states have internal predecessors, (94), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:14:43,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:14:43,082 INFO L93 Difference]: Finished difference Result 1954 states and 2670 transitions. [2022-04-06 19:14:43,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 19:14:43,083 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 9 states have internal predecessors, (94), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2022-04-06 19:14:43,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:14:43,087 INFO L225 Difference]: With dead ends: 1954 [2022-04-06 19:14:43,087 INFO L226 Difference]: Without dead ends: 1923 [2022-04-06 19:14:43,088 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2022-04-06 19:14:43,088 INFO L913 BasicCegarLoop]: 2101 mSDtfsCounter, 21 mSDsluCounter, 20955 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 23056 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:14:43,088 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 23056 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:14:43,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2022-04-06 19:14:44,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1920. [2022-04-06 19:14:44,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1304 states have (on average 1.2975460122699387) internal successors, (1692), 1338 states have internal predecessors, (1692), 467 states have call successors, (467), 143 states have call predecessors, (467), 148 states have return successors, (471), 459 states have call predecessors, (471), 463 states have call successors, (471) [2022-04-06 19:14:44,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2630 transitions. [2022-04-06 19:14:44,142 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2630 transitions. Word has length 120 [2022-04-06 19:14:44,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:14:44,143 INFO L478 AbstractCegarLoop]: Abstraction has 1920 states and 2630 transitions. [2022-04-06 19:14:44,143 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 9 states have internal predecessors, (94), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) [2022-04-06 19:14:44,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2630 transitions. [2022-04-06 19:14:44,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-04-06 19:14:44,144 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:14:44,144 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:14:44,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-04-06 19:14:44,344 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:14:44,344 INFO L403 AbstractCegarLoop]: === Iteration 97 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:14:44,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:14:44,345 INFO L85 PathProgramCache]: Analyzing trace with hash 62858148, now seen corresponding path program 1 times [2022-04-06 19:14:44,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:14:44,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1586206578] [2022-04-06 19:14:44,347 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:14:44,347 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:14:44,347 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:14:44,347 INFO L85 PathProgramCache]: Analyzing trace with hash 62858148, now seen corresponding path program 2 times [2022-04-06 19:14:44,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:14:44,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306395017] [2022-04-06 19:14:44,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:14:44,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:14:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:44,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:14:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:44,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:14:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:44,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:14:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:44,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:14:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:44,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:14:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:44,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:14:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:44,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-06 19:14:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:44,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 19:14:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:44,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 19:14:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:44,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:14:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:44,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:14:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:44,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:14:44,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:44,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-04-06 19:14:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:44,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 19:14:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:44,755 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 19:14:44,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:14:44,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306395017] [2022-04-06 19:14:44,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306395017] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:14:44,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083819322] [2022-04-06 19:14:44,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:14:44,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:14:44,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:14:44,757 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) [2022-04-06 19:14:44,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-04-06 19:14:47,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:14:47,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:14:47,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-06 19:14:47,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:14:47,215 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-04-06 19:14:47,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:14:47,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083819322] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:14:47,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:14:47,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-04-06 19:14:47,215 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:14:47,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1586206578] [2022-04-06 19:14:47,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1586206578] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:14:47,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:14:47,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 19:14:47,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139202790] [2022-04-06 19:14:47,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:14:47,216 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 19:14:47,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:14:47,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 19:14:47,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-04-06 19:14:47,216 INFO L87 Difference]: Start difference. First operand 1920 states and 2630 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (14), 5 states have call predecessors, (14), 1 states have call successors, (14) [2022-04-06 19:14:48,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:14:48,328 INFO L93 Difference]: Finished difference Result 1971 states and 2691 transitions. [2022-04-06 19:14:48,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 19:14:48,328 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (14), 5 states have call predecessors, (14), 1 states have call successors, (14) Word has length 123 [2022-04-06 19:14:48,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:14:48,331 INFO L225 Difference]: With dead ends: 1971 [2022-04-06 19:14:48,331 INFO L226 Difference]: Without dead ends: 1926 [2022-04-06 19:14:48,332 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2022-04-06 19:14:48,332 INFO L913 BasicCegarLoop]: 2101 mSDtfsCounter, 15 mSDsluCounter, 16761 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 18862 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 19:14:48,332 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 18862 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 19:14:48,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2022-04-06 19:14:49,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1915. [2022-04-06 19:14:49,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1915 states, 1300 states have (on average 1.2984615384615386) internal successors, (1688), 1334 states have internal predecessors, (1688), 467 states have call successors, (467), 143 states have call predecessors, (467), 147 states have return successors, (470), 458 states have call predecessors, (470), 463 states have call successors, (470) [2022-04-06 19:14:49,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2625 transitions. [2022-04-06 19:14:49,331 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2625 transitions. Word has length 123 [2022-04-06 19:14:49,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:14:49,332 INFO L478 AbstractCegarLoop]: Abstraction has 1915 states and 2625 transitions. [2022-04-06 19:14:49,332 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (14), 5 states have call predecessors, (14), 1 states have call successors, (14) [2022-04-06 19:14:49,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2625 transitions. [2022-04-06 19:14:49,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-04-06 19:14:49,333 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:14:49,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:14:49,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-04-06 19:14:49,540 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:14:49,540 INFO L403 AbstractCegarLoop]: === Iteration 98 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:14:49,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:14:49,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1450171217, now seen corresponding path program 1 times [2022-04-06 19:14:49,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:14:49,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1845086853] [2022-04-06 19:14:49,543 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:14:49,543 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:14:49,543 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:14:49,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1450171217, now seen corresponding path program 2 times [2022-04-06 19:14:49,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:14:49,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604148998] [2022-04-06 19:14:49,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:14:49,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:14:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:49,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:14:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:49,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:14:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:49,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:14:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:49,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:14:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:49,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:14:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:49,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:14:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:49,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:14:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:49,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-06 19:14:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:49,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:14:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:49,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 19:14:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:50,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:14:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:50,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:14:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:50,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:14:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:50,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-06 19:14:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:50,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:14:50,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:14:50,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604148998] [2022-04-06 19:14:50,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604148998] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:14:50,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810199291] [2022-04-06 19:14:50,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:14:50,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:14:50,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:14:50,055 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) [2022-04-06 19:14:50,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-04-06 19:14:52,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:14:52,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:14:52,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 21 conjunts are in the unsatisfiable core [2022-04-06 19:14:52,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:14:52,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:14:52,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:14:52,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810199291] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:14:52,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:14:52,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2022-04-06 19:14:52,587 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:14:52,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1845086853] [2022-04-06 19:14:52,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1845086853] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:14:52,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:14:52,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 19:14:52,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928629612] [2022-04-06 19:14:52,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:14:52,588 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 19:14:52,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:14:52,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 19:14:52,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2022-04-06 19:14:52,588 INFO L87 Difference]: Start difference. First operand 1915 states and 2625 transitions. Second operand has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 9 states have internal predecessors, (92), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-06 19:14:53,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:14:53,896 INFO L93 Difference]: Finished difference Result 1921 states and 2630 transitions. [2022-04-06 19:14:53,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 19:14:53,897 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 9 states have internal predecessors, (92), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) Word has length 122 [2022-04-06 19:14:53,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:14:53,900 INFO L225 Difference]: With dead ends: 1921 [2022-04-06 19:14:53,900 INFO L226 Difference]: Without dead ends: 1815 [2022-04-06 19:14:53,901 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2022-04-06 19:14:53,901 INFO L913 BasicCegarLoop]: 2089 mSDtfsCounter, 8 mSDsluCounter, 20690 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 22779 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 19:14:53,901 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 22779 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 19:14:53,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2022-04-06 19:14:54,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1815. [2022-04-06 19:14:54,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1815 states, 1221 states have (on average 1.303030303030303) internal successors, (1591), 1253 states have internal predecessors, (1591), 457 states have call successors, (457), 133 states have call predecessors, (457), 136 states have return successors, (459), 447 states have call predecessors, (459), 453 states have call successors, (459) [2022-04-06 19:14:54,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2507 transitions. [2022-04-06 19:14:54,892 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2507 transitions. Word has length 122 [2022-04-06 19:14:54,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:14:54,892 INFO L478 AbstractCegarLoop]: Abstraction has 1815 states and 2507 transitions. [2022-04-06 19:14:54,892 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 9 states have internal predecessors, (92), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-06 19:14:54,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2507 transitions. [2022-04-06 19:14:54,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-04-06 19:14:54,893 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:14:54,893 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:14:54,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-04-06 19:14:55,093 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,SelfDestructingSolverStorable97 [2022-04-06 19:14:55,094 INFO L403 AbstractCegarLoop]: === Iteration 99 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:14:55,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:14:55,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1494974925, now seen corresponding path program 1 times [2022-04-06 19:14:55,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:14:55,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1203549648] [2022-04-06 19:14:55,096 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:14:55,096 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:14:55,096 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:14:55,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1494974925, now seen corresponding path program 2 times [2022-04-06 19:14:55,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:14:55,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921121820] [2022-04-06 19:14:55,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:14:55,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:14:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:55,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:14:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:55,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:14:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:55,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:14:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:55,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:14:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:55,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:14:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:55,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:14:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:55,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-06 19:14:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:55,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:14:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:55,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:14:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:55,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-06 19:14:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:55,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:14:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:55,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-06 19:14:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:55,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:14:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:14:55,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:14:55,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:14:55,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921121820] [2022-04-06 19:14:55,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921121820] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:14:55,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379622816] [2022-04-06 19:14:55,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:14:55,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:14:55,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:14:55,512 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) [2022-04-06 19:14:55,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-04-06 19:14:57,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:14:57,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:14:57,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 2030 conjuncts, 15 conjunts are in the unsatisfiable core [2022-04-06 19:14:57,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:14:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:14:57,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:14:57,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379622816] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:14:57,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:14:57,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-04-06 19:14:57,991 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:14:57,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1203549648] [2022-04-06 19:14:57,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1203549648] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:14:57,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:14:57,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 19:14:57,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559501711] [2022-04-06 19:14:57,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:14:57,992 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 19:14:57,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:14:57,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 19:14:57,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-04-06 19:14:57,992 INFO L87 Difference]: Start difference. First operand 1815 states and 2507 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 6 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-06 19:14:59,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:14:59,062 INFO L93 Difference]: Finished difference Result 2412 states and 3300 transitions. [2022-04-06 19:14:59,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 19:14:59,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 6 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2022-04-06 19:14:59,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:14:59,067 INFO L225 Difference]: With dead ends: 2412 [2022-04-06 19:14:59,067 INFO L226 Difference]: Without dead ends: 1824 [2022-04-06 19:14:59,068 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-04-06 19:14:59,068 INFO L913 BasicCegarLoop]: 2049 mSDtfsCounter, 4 mSDsluCounter, 12268 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14317 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 19:14:59,069 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 14317 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 19:14:59,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2022-04-06 19:15:00,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1818. [2022-04-06 19:15:00,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1223 states have (on average 1.3008994276369583) internal successors, (1591), 1256 states have internal predecessors, (1591), 457 states have call successors, (457), 133 states have call predecessors, (457), 137 states have return successors, (460), 447 states have call predecessors, (460), 453 states have call successors, (460) [2022-04-06 19:15:00,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 2508 transitions. [2022-04-06 19:15:00,062 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 2508 transitions. Word has length 124 [2022-04-06 19:15:00,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:15:00,062 INFO L478 AbstractCegarLoop]: Abstraction has 1818 states and 2508 transitions. [2022-04-06 19:15:00,062 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 6 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-06 19:15:00,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 2508 transitions. [2022-04-06 19:15:00,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-04-06 19:15:00,063 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:15:00,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:15:00,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-04-06 19:15:00,264 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,SelfDestructingSolverStorable98 [2022-04-06 19:15:00,264 INFO L403 AbstractCegarLoop]: === Iteration 100 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:15:00,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:15:00,264 INFO L85 PathProgramCache]: Analyzing trace with hash 132081646, now seen corresponding path program 1 times [2022-04-06 19:15:00,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:15:00,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1672849214] [2022-04-06 19:15:00,266 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:15:00,266 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:15:00,266 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:15:00,267 INFO L85 PathProgramCache]: Analyzing trace with hash 132081646, now seen corresponding path program 2 times [2022-04-06 19:15:00,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:15:00,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128642224] [2022-04-06 19:15:00,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:15:00,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:15:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:00,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:15:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:00,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:15:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:00,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:15:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:00,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:15:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:00,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:15:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:00,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:00,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-06 19:15:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:00,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 19:15:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:00,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:15:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:00,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-06 19:15:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:00,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:00,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-06 19:15:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:00,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:00,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:15:00,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:15:00,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128642224] [2022-04-06 19:15:00,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128642224] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:15:00,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532734740] [2022-04-06 19:15:00,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:15:00,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:15:00,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:15:00,692 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) [2022-04-06 19:15:00,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-04-06 19:15:03,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:15:03,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:15:03,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 2025 conjuncts, 15 conjunts are in the unsatisfiable core [2022-04-06 19:15:03,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:15:03,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:15:03,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:15:03,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532734740] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:15:03,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:15:03,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-04-06 19:15:03,321 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:15:03,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1672849214] [2022-04-06 19:15:03,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1672849214] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:15:03,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:15:03,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 19:15:03,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685557278] [2022-04-06 19:15:03,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:15:03,322 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 19:15:03,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:15:03,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 19:15:03,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-04-06 19:15:03,322 INFO L87 Difference]: Start difference. First operand 1818 states and 2508 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-06 19:15:04,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:15:04,368 INFO L93 Difference]: Finished difference Result 1887 states and 2582 transitions. [2022-04-06 19:15:04,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 19:15:04,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2022-04-06 19:15:04,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:15:04,371 INFO L225 Difference]: With dead ends: 1887 [2022-04-06 19:15:04,371 INFO L226 Difference]: Without dead ends: 1819 [2022-04-06 19:15:04,372 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-04-06 19:15:04,372 INFO L913 BasicCegarLoop]: 2047 mSDtfsCounter, 4 mSDsluCounter, 12260 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14307 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 19:15:04,372 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 14307 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 19:15:04,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2022-04-06 19:15:05,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1813. [2022-04-06 19:15:05,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1219 states have (on average 1.3010664479081213) internal successors, (1586), 1251 states have internal predecessors, (1586), 457 states have call successors, (457), 133 states have call predecessors, (457), 136 states have return successors, (459), 447 states have call predecessors, (459), 453 states have call successors, (459) [2022-04-06 19:15:05,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2502 transitions. [2022-04-06 19:15:05,325 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2502 transitions. Word has length 123 [2022-04-06 19:15:05,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:15:05,325 INFO L478 AbstractCegarLoop]: Abstraction has 1813 states and 2502 transitions. [2022-04-06 19:15:05,325 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2022-04-06 19:15:05,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2502 transitions. [2022-04-06 19:15:05,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-04-06 19:15:05,326 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:15:05,326 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:15:05,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-04-06 19:15:05,527 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-04-06 19:15:05,527 INFO L403 AbstractCegarLoop]: === Iteration 101 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:15:05,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:15:05,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1737060291, now seen corresponding path program 1 times [2022-04-06 19:15:05,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:15:05,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [359410415] [2022-04-06 19:15:05,529 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:15:05,529 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:15:05,530 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:15:05,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1737060291, now seen corresponding path program 2 times [2022-04-06 19:15:05,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:15:05,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338505793] [2022-04-06 19:15:05,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:15:05,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:15:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:05,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:15:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:05,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:15:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:05,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:15:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:05,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:15:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:05,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:15:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:05,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:05,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-06 19:15:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:05,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:15:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:05,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:05,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 19:15:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:05,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 19:15:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:05,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-06 19:15:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:05,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:05,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-06 19:15:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:06,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-06 19:15:06,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:15:06,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338505793] [2022-04-06 19:15:06,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338505793] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:15:06,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700738106] [2022-04-06 19:15:06,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:15:06,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:15:06,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:15:06,008 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 19:15:06,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-04-06 19:15:08,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:15:08,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:15:08,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 1960 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-06 19:15:08,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:15:08,623 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 19:15:08,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:15:08,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700738106] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:15:08,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:15:08,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 20 [2022-04-06 19:15:08,623 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:15:08,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [359410415] [2022-04-06 19:15:08,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [359410415] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:15:08,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:15:08,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 19:15:08,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596014482] [2022-04-06 19:15:08,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:15:08,624 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 19:15:08,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:15:08,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 19:15:08,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-04-06 19:15:08,624 INFO L87 Difference]: Start difference. First operand 1813 states and 2502 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) [2022-04-06 19:15:09,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:15:09,865 INFO L93 Difference]: Finished difference Result 1840 states and 2532 transitions. [2022-04-06 19:15:09,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 19:15:09,865 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) Word has length 127 [2022-04-06 19:15:09,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:15:09,869 INFO L225 Difference]: With dead ends: 1840 [2022-04-06 19:15:09,869 INFO L226 Difference]: Without dead ends: 1810 [2022-04-06 19:15:09,870 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-04-06 19:15:09,870 INFO L913 BasicCegarLoop]: 2066 mSDtfsCounter, 15 mSDsluCounter, 18525 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 20591 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 19:15:09,870 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 20591 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 19:15:09,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2022-04-06 19:15:10,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1810. [2022-04-06 19:15:10,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1810 states, 1217 states have (on average 1.3007395234182415) internal successors, (1583), 1249 states have internal predecessors, (1583), 456 states have call successors, (456), 133 states have call predecessors, (456), 136 states have return successors, (458), 446 states have call predecessors, (458), 452 states have call successors, (458) [2022-04-06 19:15:10,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 2497 transitions. [2022-04-06 19:15:10,890 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 2497 transitions. Word has length 127 [2022-04-06 19:15:10,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:15:10,890 INFO L478 AbstractCegarLoop]: Abstraction has 1810 states and 2497 transitions. [2022-04-06 19:15:10,890 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) [2022-04-06 19:15:10,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 2497 transitions. [2022-04-06 19:15:10,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-04-06 19:15:10,891 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:15:10,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:15:10,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-04-06 19:15:11,091 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:15:11,092 INFO L403 AbstractCegarLoop]: === Iteration 102 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:15:11,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:15:11,092 INFO L85 PathProgramCache]: Analyzing trace with hash 834732920, now seen corresponding path program 1 times [2022-04-06 19:15:11,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:15:11,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1081102244] [2022-04-06 19:15:11,094 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:15:11,094 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:15:11,094 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:15:11,094 INFO L85 PathProgramCache]: Analyzing trace with hash 834732920, now seen corresponding path program 2 times [2022-04-06 19:15:11,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:15:11,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008102272] [2022-04-06 19:15:11,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:15:11,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:15:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:11,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:15:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:11,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:15:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:11,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:15:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:11,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:15:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:11,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:15:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:11,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:11,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-06 19:15:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:11,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 19:15:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:11,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:11,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 19:15:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:11,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 19:15:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:11,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-06 19:15:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:11,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:11,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-06 19:15:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:11,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:11,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-06 19:15:11,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:15:11,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008102272] [2022-04-06 19:15:11,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008102272] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:15:11,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319182235] [2022-04-06 19:15:11,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:15:11,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:15:11,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:15:11,557 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 19:15:11,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-04-06 19:15:13,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:15:13,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:15:13,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 1959 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-06 19:15:13,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:15:14,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 19:15:14,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:15:14,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319182235] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:15:14,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:15:14,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 20 [2022-04-06 19:15:14,182 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:15:14,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1081102244] [2022-04-06 19:15:14,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1081102244] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:15:14,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:15:14,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 19:15:14,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342845597] [2022-04-06 19:15:14,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:15:14,182 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 19:15:14,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:15:14,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 19:15:14,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-04-06 19:15:14,182 INFO L87 Difference]: Start difference. First operand 1810 states and 2497 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) [2022-04-06 19:15:15,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:15:15,425 INFO L93 Difference]: Finished difference Result 1837 states and 2527 transitions. [2022-04-06 19:15:15,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 19:15:15,426 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) Word has length 126 [2022-04-06 19:15:15,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:15:15,430 INFO L225 Difference]: With dead ends: 1837 [2022-04-06 19:15:15,430 INFO L226 Difference]: Without dead ends: 1807 [2022-04-06 19:15:15,431 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-04-06 19:15:15,431 INFO L913 BasicCegarLoop]: 2049 mSDtfsCounter, 13 mSDsluCounter, 18393 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 20442 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 19:15:15,431 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 20442 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 19:15:15,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2022-04-06 19:15:16,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1807. [2022-04-06 19:15:16,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1807 states, 1215 states have (on average 1.300411522633745) internal successors, (1580), 1247 states have internal predecessors, (1580), 455 states have call successors, (455), 133 states have call predecessors, (455), 136 states have return successors, (457), 445 states have call predecessors, (457), 451 states have call successors, (457) [2022-04-06 19:15:16,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 2492 transitions. [2022-04-06 19:15:16,432 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 2492 transitions. Word has length 126 [2022-04-06 19:15:16,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:15:16,432 INFO L478 AbstractCegarLoop]: Abstraction has 1807 states and 2492 transitions. [2022-04-06 19:15:16,432 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) [2022-04-06 19:15:16,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 2492 transitions. [2022-04-06 19:15:16,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-04-06 19:15:16,433 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:15:16,433 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:15:16,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-04-06 19:15:16,633 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2022-04-06 19:15:16,634 INFO L403 AbstractCegarLoop]: === Iteration 103 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:15:16,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:15:16,634 INFO L85 PathProgramCache]: Analyzing trace with hash -871131783, now seen corresponding path program 1 times [2022-04-06 19:15:16,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:15:16,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [462547407] [2022-04-06 19:15:16,637 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:15:16,637 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:15:16,637 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:15:16,637 INFO L85 PathProgramCache]: Analyzing trace with hash -871131783, now seen corresponding path program 2 times [2022-04-06 19:15:16,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:15:16,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334297875] [2022-04-06 19:15:16,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:15:16,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:15:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:16,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:15:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:16,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:15:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:16,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:15:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:16,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:15:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:16,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:15:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:17,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:17,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:15:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:17,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:15:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:17,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:17,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 19:15:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:17,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-06 19:15:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:17,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:17,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-06 19:15:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:17,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:17,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-06 19:15:17,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:15:17,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334297875] [2022-04-06 19:15:17,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334297875] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:15:17,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786344773] [2022-04-06 19:15:17,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:15:17,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:15:17,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:15:17,161 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 19:15:17,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-04-06 19:15:19,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:15:19,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:15:19,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 1935 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-06 19:15:19,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:15:19,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 19:15:19,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:15:19,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786344773] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:15:19,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:15:19,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 21 [2022-04-06 19:15:19,810 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:15:19,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [462547407] [2022-04-06 19:15:19,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [462547407] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:15:19,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:15:19,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 19:15:19,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349481531] [2022-04-06 19:15:19,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:15:19,810 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 19:15:19,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:15:19,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 19:15:19,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-04-06 19:15:19,811 INFO L87 Difference]: Start difference. First operand 1807 states and 2492 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 8 states have internal predecessors, (94), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-06 19:15:21,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:15:21,014 INFO L93 Difference]: Finished difference Result 1834 states and 2522 transitions. [2022-04-06 19:15:21,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 19:15:21,014 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 8 states have internal predecessors, (94), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) Word has length 126 [2022-04-06 19:15:21,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:15:21,018 INFO L225 Difference]: With dead ends: 1834 [2022-04-06 19:15:21,018 INFO L226 Difference]: Without dead ends: 1805 [2022-04-06 19:15:21,019 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2022-04-06 19:15:21,019 INFO L913 BasicCegarLoop]: 2055 mSDtfsCounter, 17 mSDsluCounter, 18424 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 20479 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 19:15:21,019 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 20479 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 19:15:21,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2022-04-06 19:15:22,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1805. [2022-04-06 19:15:22,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 1214 states have (on average 1.299835255354201) internal successors, (1578), 1246 states have internal predecessors, (1578), 454 states have call successors, (454), 133 states have call predecessors, (454), 136 states have return successors, (456), 444 states have call predecessors, (456), 450 states have call successors, (456) [2022-04-06 19:15:22,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 2488 transitions. [2022-04-06 19:15:22,012 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 2488 transitions. Word has length 126 [2022-04-06 19:15:22,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:15:22,012 INFO L478 AbstractCegarLoop]: Abstraction has 1805 states and 2488 transitions. [2022-04-06 19:15:22,012 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 8 states have internal predecessors, (94), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-06 19:15:22,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 2488 transitions. [2022-04-06 19:15:22,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-04-06 19:15:22,013 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:15:22,013 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:15:22,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-04-06 19:15:22,213 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:15:22,214 INFO L403 AbstractCegarLoop]: === Iteration 104 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:15:22,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:15:22,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1130059361, now seen corresponding path program 1 times [2022-04-06 19:15:22,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:15:22,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [660142183] [2022-04-06 19:15:22,222 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:15:22,222 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:15:22,222 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:15:22,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1130059361, now seen corresponding path program 2 times [2022-04-06 19:15:22,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:15:22,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333489028] [2022-04-06 19:15:22,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:15:22,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:15:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:22,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:15:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:22,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:15:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:22,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:15:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:22,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:15:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:22,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:15:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:22,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:22,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:15:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:22,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 19:15:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:22,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:22,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 19:15:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:22,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-06 19:15:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:22,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:22,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-06 19:15:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:22,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:22,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-06 19:15:22,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:15:22,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333489028] [2022-04-06 19:15:22,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333489028] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:15:22,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254718916] [2022-04-06 19:15:22,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:15:22,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:15:22,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:15:22,667 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 19:15:22,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-04-06 19:15:25,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:15:25,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:15:25,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 1934 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-06 19:15:25,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:15:25,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 19:15:25,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:15:25,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254718916] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:15:25,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:15:25,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 21 [2022-04-06 19:15:25,332 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:15:25,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [660142183] [2022-04-06 19:15:25,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [660142183] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:15:25,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:15:25,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 19:15:25,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59173761] [2022-04-06 19:15:25,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:15:25,333 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 19:15:25,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:15:25,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 19:15:25,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-04-06 19:15:25,333 INFO L87 Difference]: Start difference. First operand 1805 states and 2488 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-06 19:15:26,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:15:26,522 INFO L93 Difference]: Finished difference Result 1832 states and 2518 transitions. [2022-04-06 19:15:26,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 19:15:26,523 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) Word has length 125 [2022-04-06 19:15:26,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:15:26,528 INFO L225 Difference]: With dead ends: 1832 [2022-04-06 19:15:26,528 INFO L226 Difference]: Without dead ends: 1803 [2022-04-06 19:15:26,528 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2022-04-06 19:15:26,529 INFO L913 BasicCegarLoop]: 2040 mSDtfsCounter, 16 mSDsluCounter, 18309 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 20349 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:15:26,529 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 20349 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:15:26,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2022-04-06 19:15:27,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1803. [2022-04-06 19:15:27,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1213 states have (on average 1.2992580379225063) internal successors, (1576), 1245 states have internal predecessors, (1576), 453 states have call successors, (453), 133 states have call predecessors, (453), 136 states have return successors, (455), 443 states have call predecessors, (455), 449 states have call successors, (455) [2022-04-06 19:15:27,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 2484 transitions. [2022-04-06 19:15:27,518 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 2484 transitions. Word has length 125 [2022-04-06 19:15:27,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:15:27,518 INFO L478 AbstractCegarLoop]: Abstraction has 1803 states and 2484 transitions. [2022-04-06 19:15:27,518 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-06 19:15:27,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 2484 transitions. [2022-04-06 19:15:27,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-04-06 19:15:27,519 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:15:27,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:15:27,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-04-06 19:15:27,720 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-04-06 19:15:27,721 INFO L403 AbstractCegarLoop]: === Iteration 105 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:15:27,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:15:27,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1179691510, now seen corresponding path program 1 times [2022-04-06 19:15:27,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:15:27,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1743027426] [2022-04-06 19:15:27,723 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:15:27,724 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:15:27,724 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:15:27,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1179691510, now seen corresponding path program 2 times [2022-04-06 19:15:27,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:15:27,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801804834] [2022-04-06 19:15:27,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:15:27,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:15:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:27,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:15:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:28,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:15:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:28,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:15:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:28,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:15:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:28,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:15:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:28,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:28,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 19:15:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:28,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 19:15:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:28,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 19:15:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:28,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:28,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 19:15:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:28,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-06 19:15:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:28,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:28,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-06 19:15:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:28,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:28,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-06 19:15:28,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:15:28,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801804834] [2022-04-06 19:15:28,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801804834] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:15:28,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349579718] [2022-04-06 19:15:28,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:15:28,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:15:28,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:15:28,223 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 19:15:28,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-04-06 19:15:30,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:15:30,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:15:30,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 1964 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-06 19:15:30,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:15:30,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 19:15:30,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:15:30,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349579718] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:15:30,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:15:30,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [12] total 24 [2022-04-06 19:15:30,963 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:15:30,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1743027426] [2022-04-06 19:15:30,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1743027426] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:15:30,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:15:30,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 19:15:30,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844448626] [2022-04-06 19:15:30,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:15:30,964 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 19:15:30,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:15:30,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 19:15:30,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2022-04-06 19:15:30,964 INFO L87 Difference]: Start difference. First operand 1803 states and 2484 transitions. Second operand has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 10 states have internal predecessors, (100), 3 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 2 states have call successors, (15) [2022-04-06 19:15:32,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:15:32,217 INFO L93 Difference]: Finished difference Result 1825 states and 2509 transitions. [2022-04-06 19:15:32,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 19:15:32,217 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 10 states have internal predecessors, (100), 3 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 2 states have call successors, (15) Word has length 134 [2022-04-06 19:15:32,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:15:32,221 INFO L225 Difference]: With dead ends: 1825 [2022-04-06 19:15:32,221 INFO L226 Difference]: Without dead ends: 1775 [2022-04-06 19:15:32,221 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2022-04-06 19:15:32,222 INFO L913 BasicCegarLoop]: 2034 mSDtfsCounter, 19 mSDsluCounter, 24349 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 26383 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 19:15:32,222 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 26383 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 19:15:32,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2022-04-06 19:15:33,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1775. [2022-04-06 19:15:33,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1775 states, 1190 states have (on average 1.304201680672269) internal successors, (1552), 1222 states have internal predecessors, (1552), 450 states have call successors, (450), 131 states have call predecessors, (450), 134 states have return successors, (452), 440 states have call predecessors, (452), 446 states have call successors, (452) [2022-04-06 19:15:33,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 2454 transitions. [2022-04-06 19:15:33,193 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 2454 transitions. Word has length 134 [2022-04-06 19:15:33,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:15:33,193 INFO L478 AbstractCegarLoop]: Abstraction has 1775 states and 2454 transitions. [2022-04-06 19:15:33,193 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 10 states have internal predecessors, (100), 3 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 2 states have call successors, (15) [2022-04-06 19:15:33,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 2454 transitions. [2022-04-06 19:15:33,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-04-06 19:15:33,194 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:15:33,194 INFO L499 BasicCegarLoop]: trace histogram [12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-04-06 19:15:33,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-04-06 19:15:33,395 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:15:33,395 INFO L403 AbstractCegarLoop]: === Iteration 106 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:15:33,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:15:33,395 INFO L85 PathProgramCache]: Analyzing trace with hash 725300983, now seen corresponding path program 1 times [2022-04-06 19:15:33,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:15:33,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1475214105] [2022-04-06 19:15:33,398 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:15:33,398 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:15:33,398 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:15:33,398 INFO L85 PathProgramCache]: Analyzing trace with hash 725300983, now seen corresponding path program 2 times [2022-04-06 19:15:33,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:15:33,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579992107] [2022-04-06 19:15:33,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:15:33,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:15:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:15:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:15:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:15:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:15:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:15:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-06 19:15:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:15:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 19:15:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 19:15:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 19:15:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 19:15:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 19:15:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 19:15:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-06 19:15:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 19:15:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 19:15:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 19:15:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 19:15:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 19:15:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:33,879 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-04-06 19:15:33,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:15:33,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579992107] [2022-04-06 19:15:33,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579992107] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:15:33,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437770366] [2022-04-06 19:15:33,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:15:33,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:15:33,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:15:33,880 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 19:15:33,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-04-06 19:15:36,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:15:36,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:15:36,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 19:15:36,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:15:36,638 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-04-06 19:15:36,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:15:36,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437770366] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:15:36,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:15:36,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-04-06 19:15:36,639 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:15:36,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1475214105] [2022-04-06 19:15:36,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1475214105] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:15:36,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:15:36,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 19:15:36,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839539343] [2022-04-06 19:15:36,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:15:36,640 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 19:15:36,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:15:36,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 19:15:36,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-04-06 19:15:36,640 INFO L87 Difference]: Start difference. First operand 1775 states and 2454 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 1 states have call successors, (17) [2022-04-06 19:15:37,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:15:37,634 INFO L93 Difference]: Finished difference Result 1831 states and 2520 transitions. [2022-04-06 19:15:37,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 19:15:37,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 1 states have call successors, (17) Word has length 157 [2022-04-06 19:15:37,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:15:37,638 INFO L225 Difference]: With dead ends: 1831 [2022-04-06 19:15:37,638 INFO L226 Difference]: Without dead ends: 1786 [2022-04-06 19:15:37,638 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-04-06 19:15:37,639 INFO L913 BasicCegarLoop]: 2011 mSDtfsCounter, 3 mSDsluCounter, 10033 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 12044 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 19:15:37,639 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 12044 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 19:15:37,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2022-04-06 19:15:38,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1778. [2022-04-06 19:15:38,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1192 states have (on average 1.3036912751677852) internal successors, (1554), 1224 states have internal predecessors, (1554), 450 states have call successors, (450), 131 states have call predecessors, (450), 135 states have return successors, (453), 441 states have call predecessors, (453), 446 states have call successors, (453) [2022-04-06 19:15:38,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 2457 transitions. [2022-04-06 19:15:38,605 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 2457 transitions. Word has length 157 [2022-04-06 19:15:38,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:15:38,605 INFO L478 AbstractCegarLoop]: Abstraction has 1778 states and 2457 transitions. [2022-04-06 19:15:38,605 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 1 states have call successors, (17) [2022-04-06 19:15:38,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 2457 transitions. [2022-04-06 19:15:38,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-04-06 19:15:38,606 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:15:38,606 INFO L499 BasicCegarLoop]: trace histogram [12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-04-06 19:15:38,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-04-06 19:15:38,808 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2022-04-06 19:15:38,808 INFO L403 AbstractCegarLoop]: === Iteration 107 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:15:38,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:15:38,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1188720842, now seen corresponding path program 1 times [2022-04-06 19:15:38,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:15:38,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1232458328] [2022-04-06 19:15:38,811 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:15:38,811 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:15:38,811 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:15:38,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1188720842, now seen corresponding path program 2 times [2022-04-06 19:15:38,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:15:38,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3084121] [2022-04-06 19:15:38,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:15:38,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:15:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:15:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:15:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:15:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:15:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:15:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-06 19:15:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 19:15:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 19:15:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 19:15:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 19:15:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 19:15:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 19:15:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 19:15:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-06 19:15:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 19:15:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 19:15:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 19:15:39,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 19:15:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-06 19:15:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-04-06 19:15:39,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:15:39,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3084121] [2022-04-06 19:15:39,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3084121] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:15:39,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796853836] [2022-04-06 19:15:39,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:15:39,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:15:39,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:15:39,278 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 19:15:39,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-04-06 19:15:41,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:15:41,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:15:41,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 19:15:41,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:15:41,962 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-04-06 19:15:41,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:15:41,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796853836] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:15:41,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:15:41,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-04-06 19:15:41,962 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:15:41,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1232458328] [2022-04-06 19:15:41,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1232458328] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:15:41,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:15:41,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 19:15:41,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320766551] [2022-04-06 19:15:41,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:15:41,963 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 19:15:41,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:15:41,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 19:15:41,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-04-06 19:15:41,963 INFO L87 Difference]: Start difference. First operand 1778 states and 2457 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 1 states have call successors, (17) [2022-04-06 19:15:42,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:15:42,941 INFO L93 Difference]: Finished difference Result 1791 states and 2471 transitions. [2022-04-06 19:15:42,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 19:15:42,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 1 states have call successors, (17) Word has length 156 [2022-04-06 19:15:42,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:15:42,945 INFO L225 Difference]: With dead ends: 1791 [2022-04-06 19:15:42,945 INFO L226 Difference]: Without dead ends: 1746 [2022-04-06 19:15:42,946 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-04-06 19:15:42,946 INFO L913 BasicCegarLoop]: 2003 mSDtfsCounter, 3 mSDsluCounter, 9994 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 11997 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 19:15:42,946 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 11997 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 19:15:42,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2022-04-06 19:15:43,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1735. [2022-04-06 19:15:43,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1735 states, 1159 states have (on average 1.3045729076790336) internal successors, (1512), 1187 states have internal predecessors, (1512), 445 states have call successors, (445), 128 states have call predecessors, (445), 130 states have return successors, (448), 436 states have call predecessors, (448), 443 states have call successors, (448) [2022-04-06 19:15:43,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 2405 transitions. [2022-04-06 19:15:43,932 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 2405 transitions. Word has length 156 [2022-04-06 19:15:43,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:15:43,932 INFO L478 AbstractCegarLoop]: Abstraction has 1735 states and 2405 transitions. [2022-04-06 19:15:43,932 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 1 states have call successors, (17) [2022-04-06 19:15:43,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 2405 transitions. [2022-04-06 19:15:43,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-04-06 19:15:43,934 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:15:43,934 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:15:43,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2022-04-06 19:15:44,147 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:15:44,147 INFO L403 AbstractCegarLoop]: === Iteration 108 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:15:44,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:15:44,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1864412067, now seen corresponding path program 1 times [2022-04-06 19:15:44,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:15:44,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1767662496] [2022-04-06 19:15:44,150 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:15:44,150 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:15:44,150 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:15:44,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1864412067, now seen corresponding path program 2 times [2022-04-06 19:15:44,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:15:44,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146306150] [2022-04-06 19:15:44,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:15:44,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:15:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:44,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:15:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:44,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:15:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:44,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:15:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:44,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 19:15:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:44,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 19:15:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:44,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:44,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-06 19:15:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:44,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 19:15:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:44,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 19:15:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:44,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:44,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:15:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:44,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:15:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:44,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-04-06 19:15:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:44,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 19:15:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:44,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-06 19:15:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:44,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:44,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-06 19:15:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:44,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:44,655 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 19:15:44,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:15:44,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146306150] [2022-04-06 19:15:44,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146306150] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 19:15:44,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52538562] [2022-04-06 19:15:44,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 19:15:44,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:15:44,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:15:44,656 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 19:15:44,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-04-06 19:15:47,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-06 19:15:47,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 19:15:47,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 1967 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-06 19:15:47,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 19:15:47,432 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-04-06 19:15:47,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 19:15:47,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52538562] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:15:47,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 19:15:47,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [11] total 22 [2022-04-06 19:15:47,433 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:15:47,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1767662496] [2022-04-06 19:15:47,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1767662496] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:15:47,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:15:47,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 19:15:47,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591637242] [2022-04-06 19:15:47,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:15:47,433 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 19:15:47,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:15:47,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 19:15:47,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2022-04-06 19:15:47,434 INFO L87 Difference]: Start difference. First operand 1735 states and 2405 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 9 states have internal predecessors, (99), 3 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 2 states have call successors, (18) [2022-04-06 19:15:48,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:15:48,568 INFO L93 Difference]: Finished difference Result 1757 states and 2430 transitions. [2022-04-06 19:15:48,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 19:15:48,569 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 9 states have internal predecessors, (99), 3 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 2 states have call successors, (18) Word has length 143 [2022-04-06 19:15:48,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:15:48,572 INFO L225 Difference]: With dead ends: 1757 [2022-04-06 19:15:48,573 INFO L226 Difference]: Without dead ends: 1694 [2022-04-06 19:15:48,573 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2022-04-06 19:15:48,573 INFO L913 BasicCegarLoop]: 2004 mSDtfsCounter, 11 mSDsluCounter, 21997 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 24001 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 19:15:48,573 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 24001 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 19:15:48,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2022-04-06 19:15:49,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1694. [2022-04-06 19:15:49,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1694 states, 1132 states have (on average 1.308303886925795) internal successors, (1481), 1160 states have internal predecessors, (1481), 434 states have call successors, (434), 125 states have call predecessors, (434), 127 states have return successors, (437), 425 states have call predecessors, (437), 432 states have call successors, (437) [2022-04-06 19:15:49,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 2352 transitions. [2022-04-06 19:15:49,504 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 2352 transitions. Word has length 143 [2022-04-06 19:15:49,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:15:49,504 INFO L478 AbstractCegarLoop]: Abstraction has 1694 states and 2352 transitions. [2022-04-06 19:15:49,504 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 9 states have internal predecessors, (99), 3 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 2 states have call successors, (18) [2022-04-06 19:15:49,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 2352 transitions. [2022-04-06 19:15:49,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-04-06 19:15:49,505 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:15:49,505 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:15:49,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-04-06 19:15:49,705 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 19:15:49,706 INFO L403 AbstractCegarLoop]: === Iteration 109 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:15:49,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:15:49,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1747104292, now seen corresponding path program 1 times [2022-04-06 19:15:49,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:15:49,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1285864370] [2022-04-06 19:15:49,710 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 19:15:49,710 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-04-06 19:15:49,710 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 19:15:49,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1747104292, now seen corresponding path program 2 times [2022-04-06 19:15:49,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:15:49,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555334408] [2022-04-06 19:15:49,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:15:49,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:15:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:49,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:15:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:49,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 19:15:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:50,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:15:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:50,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-06 19:15:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:50,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:50,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:15:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:50,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:50,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-06 19:15:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:50,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:50,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:50,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:15:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:50,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 19:15:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:50,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:15:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:50,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:50,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-04-06 19:15:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:50,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-06 19:15:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:50,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-06 19:15:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:50,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:50,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-06 19:15:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:50,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:15:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:15:50,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 19:15:50,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:15:50,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555334408] [2022-04-06 19:15:50,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555334408] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:15:50,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:15:50,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-06 19:15:50,505 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:15:50,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1285864370] [2022-04-06 19:15:50,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1285864370] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:15:50,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:15:50,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-06 19:15:50,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301215491] [2022-04-06 19:15:50,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:15:50,505 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-06 19:15:50,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:15:50,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-06 19:15:50,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-04-06 19:15:50,506 INFO L87 Difference]: Start difference. First operand 1694 states and 2352 transitions. Second operand has 21 states, 21 states have (on average 5.238095238095238) internal successors, (110), 8 states have internal predecessors, (110), 4 states have call successors, (22), 13 states have call predecessors, (22), 5 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) [2022-04-06 19:15:59,599 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:16:01,623 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:16:03,537 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:16:05,565 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:16:07,591 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-04-06 19:16:09,610 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 []