/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-b030c9e [2022-03-20 17:27:16,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 17:27:16,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 17:27:16,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 17:27:16,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 17:27:16,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 17:27:16,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 17:27:16,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 17:27:16,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 17:27:16,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 17:27:16,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 17:27:16,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 17:27:16,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 17:27:16,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 17:27:16,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 17:27:16,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 17:27:16,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 17:27:16,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 17:27:16,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 17:27:16,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 17:27:16,517 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 17:27:16,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 17:27:16,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 17:27:16,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 17:27:16,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 17:27:16,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 17:27:16,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 17:27:16,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 17:27:16,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 17:27:16,532 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-03-20 17:27:16,539 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 17:27:16,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 17:27:16,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 17:27:16,540 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 17:27:16,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 17:27:16,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 17:27:16,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 17:27:16,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 17:27:16,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 17:27:16,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 17:27:16,541 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 17:27:16,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 17:27:16,542 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 17:27:16,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 17:27:16,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 17:27:16,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 17:27:16,542 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 17:27:16,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 17:27:16,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 17:27:16,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 17:27:16,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-20 17:27:16,542 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-20 17:27:16,543 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-20 17:27:16,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 17:27:16,543 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-20 17:27:16,543 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 17:27:16,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 17:27:16,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 17:27:16,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 17:27:16,727 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 17:27:16,728 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 17:27:16,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/parport.i.cil-2.c [2022-03-20 17:27:16,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad788936f/41f6e528296e40c2b826df4530c12b38/FLAGce423d689 [2022-03-20 17:27:17,360 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 17:27:17,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/parport.i.cil-2.c [2022-03-20 17:27:17,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad788936f/41f6e528296e40c2b826df4530c12b38/FLAGce423d689 [2022-03-20 17:27:17,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad788936f/41f6e528296e40c2b826df4530c12b38 [2022-03-20 17:27:17,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 17:27:17,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 17:27:17,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 17:27:17,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 17:27:17,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 17:27:17,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:27:17" (1/1) ... [2022-03-20 17:27:17,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a052fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:27:17, skipping insertion in model container [2022-03-20 17:27:17,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:27:17" (1/1) ... [2022-03-20 17:27:17,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 17:27:17,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 17:27:18,231 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] [2022-03-20 17:27:18,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 17:27:18,701 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 17:27:18,756 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] [2022-03-20 17:27:18,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 17:27:19,063 INFO L208 MainTranslator]: Completed translation [2022-03-20 17:27:19,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:27:19 WrapperNode [2022-03-20 17:27:19,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 17:27:19,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 17:27:19,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 17:27:19,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 17:27:19,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:27:19" (1/1) ... [2022-03-20 17:27:19,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:27:19" (1/1) ... [2022-03-20 17:27:19,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:27:19" (1/1) ... [2022-03-20 17:27:19,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:27:19" (1/1) ... [2022-03-20 17:27:19,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:27:19" (1/1) ... [2022-03-20 17:27:19,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:27:19" (1/1) ... [2022-03-20 17:27:19,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:27:19" (1/1) ... [2022-03-20 17:27:19,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 17:27:19,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 17:27:19,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 17:27:19,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 17:27:19,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:27:19" (1/1) ... [2022-03-20 17:27:19,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 17:27:19,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:27:19,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 17:27:19,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 17:27:19,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 17:27:19,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 17:27:19,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2022-03-20 17:27:19,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2022-03-20 17:27:19,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~TO~VOID [2022-03-20 17:27:19,450 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 17:27:19,450 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 17:27:19,450 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-03-20 17:27:19,450 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlIntegerToUnicodeString [2022-03-20 17:27:19,450 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlUnicodeStringToInteger [2022-03-20 17:27:19,450 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareUnicodeString [2022-03-20 17:27:19,451 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAppendUnicodeStringToString [2022-03-20 17:27:19,451 INFO L138 BoogieDeclarations]: Found implementation of procedure READ_PORT_UCHAR [2022-03-20 17:27:19,451 INFO L138 BoogieDeclarations]: Found implementation of procedure WRITE_PORT_UCHAR [2022-03-20 17:27:19,451 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-03-20 17:27:19,451 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2022-03-20 17:27:19,451 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-03-20 17:27:19,451 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeDpc [2022-03-20 17:27:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInsertQueueDpc [2022-03-20 17:27:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSynchronizeExecution [2022-03-20 17:27:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTimeIncrement [2022-03-20 17:27:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAcquireCancelSpinLock [2022-03-20 17:27:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateErrorLogEntry [2022-03-20 17:27:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure IoConnectInterrupt [2022-03-20 17:27:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReportResourceUsage [2022-03-20 17:27:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure IoInitializeRemoveLockEx [2022-03-20 17:27:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseRemoveLockEx [2022-03-20 17:27:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseRemoveLockAndWaitEx [2022-03-20 17:27:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure IoWriteErrorLogEntry [2022-03-20 17:27:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure IoWMIRegistrationControl [2022-03-20 17:27:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure IoOpenDeviceRegistryKey [2022-03-20 17:27:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure KeStallExecutionProcessor [2022-03-20 17:27:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure PoRequestPowerIrp [2022-03-20 17:27:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure PoSetPowerState [2022-03-20 17:27:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfReferenceObject [2022-03-20 17:27:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwQueryValueKey [2022-03-20 17:27:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwSetValueKey [2022-03-20 17:27:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure WmiCompleteRequest [2022-03-20 17:27:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-20 17:27:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchCleanup [2022-03-20 17:27:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDebugDumpPnpIrpInfo [2022-03-20 17:27:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLock [2022-03-20 17:27:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure PptReleaseRemoveLock [2022-03-20 17:27:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure PptReleaseRemoveLockAndWait [2022-03-20 17:27:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDebugDumpResourceList [2022-03-20 17:27:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDebugDumpResourceRequirementsList [2022-03-20 17:27:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLogError [2022-03-20 17:27:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-03-20 17:27:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure PptUnload [2022-03-20 17:27:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCleanRemovalRelationsList [2022-03-20 17:27:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAddPptRemovalRelation [2022-03-20 17:27:19,453 INFO L138 BoogieDeclarations]: Found implementation of procedure PptRemovePptRemovalRelation [2022-03-20 17:27:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDumpRemovalRelationsList [2022-03-20 17:27:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDumpPptRemovalRelationsStruct [2022-03-20 17:27:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchInternalDeviceControl [2022-03-20 17:27:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure PptIsNecR98Machine [2022-03-20 17:27:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchCreate [2022-03-20 17:27:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchClose [2022-03-20 17:27:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure PptInitiate1284_3 [2022-03-20 17:27:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectDevice [2022-03-20 17:27:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectDevice [2022-03-20 17:27:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure Ppt1284_3AssignAddress [2022-03-20 17:27:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCheckIfNon1284_3Present [2022-03-20 17:27:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCheckIfStl1284_3 [2022-03-20 17:27:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCheckIfStlProductId [2022-03-20 17:27:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSend1284_3Command [2022-03-20 17:27:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectChipFilter [2022-03-20 17:27:19,454 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectPortType [2022-03-20 17:27:19,455 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectPortCapabilities [2022-03-20 17:27:19,455 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEcpPort [2022-03-20 17:27:19,455 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEppPortIfDot3DevicePresent [2022-03-20 17:27:19,455 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEppPortIfUserRequested [2022-03-20 17:27:19,455 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEppPort [2022-03-20 17:27:19,455 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectBytePort [2022-03-20 17:27:19,455 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoDepth [2022-03-20 17:27:19,455 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoWidth [2022-03-20 17:27:19,455 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetChipMode [2022-03-20 17:27:19,455 INFO L138 BoogieDeclarations]: Found implementation of procedure PptClearChipMode [2022-03-20 17:27:19,456 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrSetMode [2022-03-20 17:27:19,456 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetByteMode [2022-03-20 17:27:19,456 INFO L138 BoogieDeclarations]: Found implementation of procedure PptClearByteMode [2022-03-20 17:27:19,456 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCheckByteMode [2022-03-20 17:27:19,456 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrClearMode [2022-03-20 17:27:19,456 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFindNatChip [2022-03-20 17:27:19,457 INFO L138 BoogieDeclarations]: Found implementation of procedure PptBuildResourceList [2022-03-20 17:27:19,457 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpBuildRemovalRelations [2022-03-20 17:27:19,457 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStartScanPciCardCmResourceList [2022-03-20 17:27:19,457 INFO L138 BoogieDeclarations]: Found implementation of procedure PptIsPci [2022-03-20 17:27:19,457 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCompleteRequest [2022-03-20 17:27:19,457 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpInitDispatchFunctionTable [2022-03-20 17:27:19,457 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpAddDevice [2022-03-20 17:27:19,457 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchPnp [2022-03-20 17:27:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStartDevice [2022-03-20 17:27:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStartScanCmResourceList [2022-03-20 17:27:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStartValidateResources [2022-03-20 17:27:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterResourceRequirements [2022-03-20 17:27:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterExistsNonIrqResourceList [2022-03-20 17:27:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterRemoveIrqResourceLists [2022-03-20 17:27:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterGetEndOfResourceRequirementsList [2022-03-20 17:27:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterNukeIrqResourceDescriptorsFromAllLists [2022-03-20 17:27:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterNukeIrqResourceDescriptors [2022-03-20 17:27:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpQueryDeviceRelations [2022-03-20 17:27:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpQueryStopDevice [2022-03-20 17:27:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpCancelStopDevice [2022-03-20 17:27:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStopDevice [2022-03-20 17:27:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpQueryRemoveDevice [2022-03-20 17:27:19,459 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpCancelRemoveDevice [2022-03-20 17:27:19,459 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpRemoveDevice [2022-03-20 17:27:19,459 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpSurpriseRemoval [2022-03-20 17:27:19,459 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpListContainsIrqResourceDescriptor [2022-03-20 17:27:19,459 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpBounceAndCatchPnpIrp [2022-03-20 17:27:19,459 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2022-03-20 17:27:19,459 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpUnhandledIrp [2022-03-20 17:27:19,460 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPowerComplete [2022-03-20 17:27:19,460 INFO L138 BoogieDeclarations]: Found implementation of procedure InitNEC_98 [2022-03-20 17:27:19,460 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchPower [2022-03-20 17:27:19,460 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockDiskModeByte [2022-03-20 17:27:19,460 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockPrtModeByte [2022-03-20 17:27:19,460 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipSetDiskMode [2022-03-20 17:27:19,460 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipCheckDevice [2022-03-20 17:27:19,460 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectLegacyZip [2022-03-20 17:27:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectLegacyZip [2022-03-20 17:27:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure PptRegInitDriverSettings [2022-03-20 17:27:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure PptRegGetDeviceParameterDword [2022-03-20 17:27:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure PptRegSetDeviceParameterDword [2022-03-20 17:27:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFailRequest [2022-03-20 17:27:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLockOrFailIrp [2022-03-20 17:27:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchPreProcessIrp [2022-03-20 17:27:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchPostProcessIrp [2022-03-20 17:27:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchCompletionRoutine [2022-03-20 17:27:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure PptGetPortNameFromPhysicalDeviceObject [2022-03-20 17:27:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure PptConnectInterrupt [2022-03-20 17:27:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDisconnectInterrupt [2022-03-20 17:27:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedIncrement [2022-03-20 17:27:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedDecrement [2022-03-20 17:27:19,462 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedRead [2022-03-20 17:27:19,463 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedQueue [2022-03-20 17:27:19,463 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedDisconnect [2022-03-20 17:27:19,465 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCancelRoutine [2022-03-20 17:27:19,465 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFreePortDpc [2022-03-20 17:27:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTryAllocatePortAtInterruptLevel [2022-03-20 17:27:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFreePortFromInterruptLevel [2022-03-20 17:27:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure PptInterruptService [2022-03-20 17:27:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTryAllocatePort [2022-03-20 17:27:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTraversePortCheckList [2022-03-20 17:27:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFreePort [2022-03-20 17:27:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure PptQueryNumWaiters [2022-03-20 17:27:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetCancelRoutine [2022-03-20 17:27:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTickCount [2022-03-20 17:27:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure CheckPort [2022-03-20 17:27:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure PptBuildParallelPortDeviceName [2022-03-20 17:27:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure PptInitializeDeviceExtension [2022-03-20 17:27:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure PptGetPortNumberFromLptName [2022-03-20 17:27:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure PptBuildDeviceObject [2022-03-20 17:27:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure PptWmiInitWmi [2022-03-20 17:27:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchSystemControl [2022-03-20 17:27:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure PptWmiQueryWmiRegInfo [2022-03-20 17:27:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure PptWmiQueryWmiDataBlock [2022-03-20 17:27:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-20 17:27:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-20 17:27:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 17:27:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-03-20 17:27:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-03-20 17:27:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-03-20 17:27:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-03-20 17:27:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-03-20 17:27:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-03-20 17:27:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-03-20 17:27:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-03-20 17:27:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-03-20 17:27:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-03-20 17:27:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-20 17:27:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-03-20 17:27:19,470 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-03-20 17:27:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-03-20 17:27:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-03-20 17:27:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-03-20 17:27:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-03-20 17:27:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-03-20 17:27:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-03-20 17:27:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-03-20 17:27:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-03-20 17:27:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-03-20 17:27:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-03-20 17:27:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-03-20 17:27:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-20 17:27:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-20 17:27:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-20 17:27:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-03-20 17:27:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-03-20 17:27:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-03-20 17:27:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-03-20 17:27:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-03-20 17:27:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-03-20 17:27:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-03-20 17:27:19,471 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-20 17:27:19,472 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-20 17:27:19,472 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-03-20 17:27:19,472 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-03-20 17:27:19,472 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-03-20 17:27:19,472 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-03-20 17:27:19,472 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-03-20 17:27:19,472 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-03-20 17:27:19,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-03-20 17:27:19,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-03-20 17:27:19,472 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-20 17:27:19,472 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-03-20 17:27:19,472 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-03-20 17:27:19,472 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-03-20 17:27:19,472 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-03-20 17:27:19,472 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-03-20 17:27:19,473 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-03-20 17:27:19,473 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-03-20 17:27:19,473 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-03-20 17:27:19,473 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-03-20 17:27:19,473 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-03-20 17:27:19,473 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-03-20 17:27:19,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-20 17:27:19,473 INFO L138 BoogieDeclarations]: Found implementation of procedure WmiSystemControl [2022-03-20 17:27:19,473 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAcquireRemoveLockEx [2022-03-20 17:27:19,473 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-03-20 17:27:19,473 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-03-20 17:27:19,473 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-03-20 17:27:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 17:27:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 17:27:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 17:27:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 17:27:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 17:27:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-03-20 17:27:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-20 17:27:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 17:27:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-20 17:27:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-03-20 17:27:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-03-20 17:27:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-20 17:27:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-20 17:27:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-03-20 17:27:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-03-20 17:27:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-03-20 17:27:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-03-20 17:27:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure RtlIntegerToUnicodeString [2022-03-20 17:27:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 17:27:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure RtlUnicodeStringToInteger [2022-03-20 17:27:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 17:27:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-03-20 17:27:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-03-20 17:27:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-03-20 17:27:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareUnicodeString [2022-03-20 17:27:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-03-20 17:27:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAppendUnicodeStringToString [2022-03-20 17:27:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-03-20 17:27:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-03-20 17:27:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure READ_PORT_UCHAR [2022-03-20 17:27:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure WRITE_PORT_UCHAR [2022-03-20 17:27:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-03-20 17:27:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2022-03-20 17:27:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-03-20 17:27:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeDpc [2022-03-20 17:27:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure KeInsertQueueDpc [2022-03-20 17:27:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-20 17:27:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure KeSynchronizeExecution [2022-03-20 17:27:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-03-20 17:27:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-20 17:27:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-03-20 17:27:19,476 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-03-20 17:27:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-03-20 17:27:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-20 17:27:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-03-20 17:27:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-03-20 17:27:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTimeIncrement [2022-03-20 17:27:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-03-20 17:27:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-03-20 17:27:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-03-20 17:27:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-03-20 17:27:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-03-20 17:27:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-03-20 17:27:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-03-20 17:27:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-03-20 17:27:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-03-20 17:27:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-03-20 17:27:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-03-20 17:27:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-03-20 17:27:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-03-20 17:27:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-03-20 17:27:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-03-20 17:27:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure IoAcquireCancelSpinLock [2022-03-20 17:27:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateErrorLogEntry [2022-03-20 17:27:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-20 17:27:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-03-20 17:27:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-03-20 17:27:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-03-20 17:27:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-20 17:27:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-20 17:27:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-20 17:27:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure IoConnectInterrupt [2022-03-20 17:27:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2022-03-20 17:27:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-20 17:27:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-03-20 17:27:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-03-20 17:27:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-03-20 17:27:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-03-20 17:27:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-03-20 17:27:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-03-20 17:27:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-03-20 17:27:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-03-20 17:27:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-03-20 17:27:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-03-20 17:27:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure IoReportResourceUsage [2022-03-20 17:27:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-03-20 17:27:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure IoInitializeRemoveLockEx [2022-03-20 17:27:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure IoAcquireRemoveLockEx [2022-03-20 17:27:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseRemoveLockEx [2022-03-20 17:27:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseRemoveLockAndWaitEx [2022-03-20 17:27:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure IoWriteErrorLogEntry [2022-03-20 17:27:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure IoWMIRegistrationControl [2022-03-20 17:27:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure IoOpenDeviceRegistryKey [2022-03-20 17:27:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-03-20 17:27:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-03-20 17:27:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure KeStallExecutionProcessor [2022-03-20 17:27:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure PoRequestPowerIrp [2022-03-20 17:27:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure PoSetPowerState [2022-03-20 17:27:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-20 17:27:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 17:27:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-20 17:27:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-03-20 17:27:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-03-20 17:27:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure ObfReferenceObject [2022-03-20 17:27:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-03-20 17:27:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-20 17:27:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure ZwQueryValueKey [2022-03-20 17:27:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure ZwSetValueKey [2022-03-20 17:27:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure WmiCompleteRequest [2022-03-20 17:27:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure WmiSystemControl [2022-03-20 17:27:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure PptCompleteRequest [2022-03-20 17:27:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-20 17:27:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure PptWmiInitWmi [2022-03-20 17:27:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchSystemControl [2022-03-20 17:27:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpInitDispatchFunctionTable [2022-03-20 17:27:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpAddDevice [2022-03-20 17:27:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchPnp [2022-03-20 17:27:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure PptFailRequest [2022-03-20 17:27:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchPreProcessIrp [2022-03-20 17:27:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchPostProcessIrp [2022-03-20 17:27:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-03-20 17:27:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure PptUnload [2022-03-20 17:27:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchCompletionRoutine [2022-03-20 17:27:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure PptLogError [2022-03-20 17:27:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure PptConnectInterrupt [2022-03-20 17:27:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure PptDisconnectInterrupt [2022-03-20 17:27:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchCreate [2022-03-20 17:27:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchClose [2022-03-20 17:27:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedIncrement [2022-03-20 17:27:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedDecrement [2022-03-20 17:27:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedRead [2022-03-20 17:27:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedQueue [2022-03-20 17:27:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedDisconnect [2022-03-20 17:27:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure PptCancelRoutine [2022-03-20 17:27:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure PptFreePortDpc [2022-03-20 17:27:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure PptTryAllocatePortAtInterruptLevel [2022-03-20 17:27:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure PptFreePortFromInterruptLevel [2022-03-20 17:27:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure PptInterruptService [2022-03-20 17:27:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure PptTryAllocatePort [2022-03-20 17:27:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure PptTraversePortCheckList [2022-03-20 17:27:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure PptFreePort [2022-03-20 17:27:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure PptQueryNumWaiters [2022-03-20 17:27:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchInternalDeviceControl [2022-03-20 17:27:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchCleanup [2022-03-20 17:27:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure PptIsNecR98Machine [2022-03-20 17:27:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchPower [2022-03-20 17:27:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure PptRegInitDriverSettings [2022-03-20 17:27:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure PptGetPortNameFromPhysicalDeviceObject [2022-03-20 17:27:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetCancelRoutine [2022-03-20 17:27:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLockOrFailIrp [2022-03-20 17:27:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure PptDebugDumpPnpIrpInfo [2022-03-20 17:27:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLock [2022-03-20 17:27:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure PptReleaseRemoveLock [2022-03-20 17:27:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure PptReleaseRemoveLockAndWait [2022-03-20 17:27:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure PptDebugDumpResourceList [2022-03-20 17:27:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure PptDebugDumpResourceRequirementsList [2022-03-20 17:27:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectChipFilter [2022-03-20 17:27:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectPortType [2022-03-20 17:27:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetChipMode [2022-03-20 17:27:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure PptClearChipMode [2022-03-20 17:27:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure PptInitiate1284_3 [2022-03-20 17:27:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectDevice [2022-03-20 17:27:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectDevice [2022-03-20 17:27:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure Ppt1284_3AssignAddress [2022-03-20 17:27:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure PptSend1284_3Command [2022-03-20 17:27:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectLegacyZip [2022-03-20 17:27:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectLegacyZip [2022-03-20 17:27:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure PptDumpRemovalRelationsList [2022-03-20 17:27:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure PptRegGetDeviceParameterDword [2022-03-20 17:27:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure PptRegSetDeviceParameterDword [2022-03-20 17:27:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure PptBuildParallelPortDeviceName [2022-03-20 17:27:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure PptInitializeDeviceExtension [2022-03-20 17:27:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure PptGetPortNumberFromLptName [2022-03-20 17:27:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure PptBuildDeviceObject [2022-03-20 17:27:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEppPort [2022-03-20 17:27:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure PptCleanRemovalRelationsList [2022-03-20 17:27:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure CheckPort [2022-03-20 17:27:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure PptAddPptRemovalRelation [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure PptRemovePptRemovalRelation [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure PptDumpPptRemovalRelationsStruct [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure PptCheckIfStl1284_3 [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure PptCheckIfNon1284_3Present [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure PptCheckIfStlProductId [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectPortCapabilities [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEcpPort [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEppPortIfDot3DevicePresent [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEppPortIfUserRequested [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectBytePort [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoDepth [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoWidth [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrSetMode [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrClearMode [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure PptFindNatChip [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure PptBuildResourceList [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetByteMode [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure PptClearByteMode [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure PptCheckByteMode [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2022-03-20 17:27:19,485 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterResourceRequirements [2022-03-20 17:27:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpQueryDeviceRelations [2022-03-20 17:27:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpQueryStopDevice [2022-03-20 17:27:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpCancelStopDevice [2022-03-20 17:27:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStopDevice [2022-03-20 17:27:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpQueryRemoveDevice [2022-03-20 17:27:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpCancelRemoveDevice [2022-03-20 17:27:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpRemoveDevice [2022-03-20 17:27:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpSurpriseRemoval [2022-03-20 17:27:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpUnhandledIrp [2022-03-20 17:27:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStartDevice [2022-03-20 17:27:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStartValidateResources [2022-03-20 17:27:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStartScanCmResourceList [2022-03-20 17:27:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2022-03-20 17:27:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterNukeIrqResourceDescriptors [2022-03-20 17:27:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterNukeIrqResourceDescriptorsFromAllLists [2022-03-20 17:27:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterExistsNonIrqResourceList [2022-03-20 17:27:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterGetEndOfResourceRequirementsList [2022-03-20 17:27:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpListContainsIrqResourceDescriptor [2022-03-20 17:27:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterRemoveIrqResourceLists [2022-03-20 17:27:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpBounceAndCatchPnpIrp [2022-03-20 17:27:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpBuildRemovalRelations [2022-03-20 17:27:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStartScanPciCardCmResourceList [2022-03-20 17:27:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure PptIsPci [2022-03-20 17:27:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure PptPowerComplete [2022-03-20 17:27:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure InitNEC_98 [2022-03-20 17:27:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockDiskModeByte [2022-03-20 17:27:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockPrtModeByte [2022-03-20 17:27:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipSetDiskMode [2022-03-20 17:27:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipCheckDevice [2022-03-20 17:27:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~TO~VOID [2022-03-20 17:27:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTickCount [2022-03-20 17:27:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure PptWmiQueryWmiRegInfo [2022-03-20 17:27:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure PptWmiQueryWmiDataBlock [2022-03-20 17:27:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-20 17:27:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-20 17:27:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 17:27:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-20 17:27:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-03-20 17:27:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 17:27:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 17:27:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-03-20 17:27:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 17:27:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-20 17:27:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-20 17:27:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-20 17:27:19,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-20 17:27:20,223 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 17:27:20,227 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 17:27:20,247 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:20,275 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:27:20,275 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:27:20,419 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:20,530 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !false; [2022-03-20 17:27:20,530 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume false; [2022-03-20 17:27:20,545 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:20,562 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-20 17:27:20,563 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-20 17:27:20,563 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:20,569 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:27:20,570 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:27:20,666 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:20,689 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-03-20 17:27:20,689 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-03-20 17:27:20,689 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:20,695 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:27:20,695 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:27:20,817 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:20,830 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:27:20,830 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:27:20,891 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:20,908 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-20 17:27:20,908 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-20 17:27:20,938 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:20,960 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2022-03-20 17:27:20,960 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2022-03-20 17:27:20,961 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:20,969 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-20 17:27:20,970 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-20 17:27:20,981 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:20,985 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:27:20,985 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:27:21,132 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:24,443 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume !false; [2022-03-20 17:27:24,444 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume false; [2022-03-20 17:27:26,548 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:26,551 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:27:26,552 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:27:26,610 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:26,611 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:27,228 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-03-20 17:27:27,228 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2022-03-20 17:27:27,228 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-03-20 17:27:27,228 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2022-03-20 17:27:27,400 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:27,405 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:27:27,406 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:27:27,525 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:27,531 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:27:27,532 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:27:27,810 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:27,813 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:27:27,814 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:27:27,814 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:27,819 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:27:27,819 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:27:27,837 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:27,842 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:27:27,842 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:27:27,842 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:27,846 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:27:27,847 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:27:27,847 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:27,853 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:27:27,853 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:27:27,938 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:27,944 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:27:27,944 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:27:27,950 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:27,952 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:27:27,952 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:27:27,996 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:27,999 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:27:27,999 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:27:28,005 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:28,008 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:27:28,008 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:27:28,256 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:28,258 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:27:28,259 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:27:28,265 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:28,283 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-20 17:27:28,283 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-20 17:27:28,287 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:28,392 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume !false; [2022-03-20 17:27:28,392 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume false; [2022-03-20 17:27:28,802 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:28,805 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:27:28,806 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:27:28,936 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:28,977 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-20 17:27:28,977 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-20 17:27:29,030 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:31,582 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2022-03-20 17:27:31,583 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2022-03-20 17:27:31,620 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:31,639 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-20 17:27:31,639 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-20 17:27:31,640 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:31,654 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-20 17:27:31,654 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-20 17:27:31,682 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:31,689 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-20 17:27:31,690 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-20 17:27:31,795 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:31,798 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 17:27:31,798 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 17:27:31,952 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 17:27:31,964 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-20 17:27:31,964 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-20 17:27:32,025 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 17:27:32,043 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 17:27:32,043 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2022-03-20 17:27:32,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:27:32 BoogieIcfgContainer [2022-03-20 17:27:32,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 17:27:32,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 17:27:32,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 17:27:32,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 17:27:32,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 05:27:17" (1/3) ... [2022-03-20 17:27:32,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59af486e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:27:32, skipping insertion in model container [2022-03-20 17:27:32,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:27:19" (2/3) ... [2022-03-20 17:27:32,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59af486e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:27:32, skipping insertion in model container [2022-03-20 17:27:32,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:27:32" (3/3) ... [2022-03-20 17:27:32,052 INFO L111 eAbstractionObserver]: Analyzing ICFG parport.i.cil-2.c [2022-03-20 17:27:32,057 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-20 17:27:32,057 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 17:27:32,090 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 17:27:32,102 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 17:27:32,102 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 17:27:32,137 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) [2022-03-20 17:27:32,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-20 17:27:32,143 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:27:32,146 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] [2022-03-20 17:27:32,146 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:27:32,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:27:32,150 INFO L85 PathProgramCache]: Analyzing trace with hash -2073400986, now seen corresponding path program 1 times [2022-03-20 17:27:32,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:27:32,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [497861690] [2022-03-20 17:27:32,162 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:27:32,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2073400986, now seen corresponding path program 2 times [2022-03-20 17:27:32,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:27:32,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286027664] [2022-03-20 17:27:32,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:27:32,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:27:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:32,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:27:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:32,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 17:27:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:32,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:27:32,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:27:32,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286027664] [2022-03-20 17:27:32,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286027664] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:27:32,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:27:32,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:27:32,827 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:27:32,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [497861690] [2022-03-20 17:27:32,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [497861690] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:27:32,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:27:32,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:27:32,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775947488] [2022-03-20 17:27:32,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:27:32,831 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:27:32,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:27:32,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:27:32,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:27:32,858 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) [2022-03-20 17:27:37,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:27:40,266 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:27:42,299 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:27:47,575 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:27:52,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:27:52,950 INFO L93 Difference]: Finished difference Result 4216 states and 6551 transitions. [2022-03-20 17:27:52,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:27:52,952 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 [2022-03-20 17:27:52,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:27:52,972 INFO L225 Difference]: With dead ends: 4216 [2022-03-20 17:27:52,973 INFO L226 Difference]: Without dead ends: 2226 [2022-03-20 17:27:53,006 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 [2022-03-20 17:27:53,008 INFO L913 BasicCegarLoop]: 2421 mSDtfsCounter, 3234 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 3763 mSolverCounterSat, 1561 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3637 SdHoareTripleChecker+Valid, 2782 SdHoareTripleChecker+Invalid, 5327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1561 IncrementalHoareTripleChecker+Valid, 3763 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:27:53,010 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3637 Valid, 2782 Invalid, 5327 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1561 Valid, 3763 Invalid, 3 Unknown, 0 Unchecked, 19.2s Time] [2022-03-20 17:27:53,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2022-03-20 17:27:53,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 1985. [2022-03-20 17:27:53,412 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) [2022-03-20 17:27:53,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2849 transitions. [2022-03-20 17:27:53,425 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2849 transitions. Word has length 22 [2022-03-20 17:27:53,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:27:53,426 INFO L478 AbstractCegarLoop]: Abstraction has 1985 states and 2849 transitions. [2022-03-20 17:27:53,426 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) [2022-03-20 17:27:53,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2849 transitions. [2022-03-20 17:27:53,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-20 17:27:53,427 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:27:53,427 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] [2022-03-20 17:27:53,427 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 17:27:53,428 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:27:53,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:27:53,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1828450504, now seen corresponding path program 1 times [2022-03-20 17:27:53,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:27:53,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1593977825] [2022-03-20 17:27:53,457 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:27:53,458 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:27:53,458 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:27:53,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1828450504, now seen corresponding path program 2 times [2022-03-20 17:27:53,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:27:53,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442732282] [2022-03-20 17:27:53,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:27:53,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:27:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:53,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:27:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:53,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:27:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:53,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:27:53,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:27:53,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442732282] [2022-03-20 17:27:53,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442732282] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:27:53,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095856305] [2022-03-20 17:27:53,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:27:53,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:27:53,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:27:53,783 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 17:27:53,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 17:27:54,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:27:54,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:27:54,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-20 17:27:54,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:27:54,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:27:54,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:27:54,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095856305] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:27:54,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:27:54,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-03-20 17:27:54,491 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:27:54,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1593977825] [2022-03-20 17:27:54,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1593977825] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:27:54,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:27:54,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:27:54,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831147605] [2022-03-20 17:27:54,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:27:54,492 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:27:54,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:27:54,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:27:54,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-20 17:27:54,493 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) [2022-03-20 17:27:54,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:27:54,996 INFO L93 Difference]: Finished difference Result 2005 states and 2875 transitions. [2022-03-20 17:27:54,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:27:54,996 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 [2022-03-20 17:27:54,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:27:55,005 INFO L225 Difference]: With dead ends: 2005 [2022-03-20 17:27:55,005 INFO L226 Difference]: Without dead ends: 1985 [2022-03-20 17:27:55,007 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 [2022-03-20 17:27:55,011 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:27:55,012 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 5633 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 17:27:55,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2022-03-20 17:27:55,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1985. [2022-03-20 17:27:55,334 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) [2022-03-20 17:27:55,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2848 transitions. [2022-03-20 17:27:55,342 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2848 transitions. Word has length 24 [2022-03-20 17:27:55,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:27:55,343 INFO L478 AbstractCegarLoop]: Abstraction has 1985 states and 2848 transitions. [2022-03-20 17:27:55,343 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) [2022-03-20 17:27:55,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2848 transitions. [2022-03-20 17:27:55,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-20 17:27:55,344 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:27:55,344 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] [2022-03-20 17:27:55,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 17:27:55,559 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 [2022-03-20 17:27:55,560 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:27:55,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:27:55,560 INFO L85 PathProgramCache]: Analyzing trace with hash -975584275, now seen corresponding path program 1 times [2022-03-20 17:27:55,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:27:55,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1814435292] [2022-03-20 17:27:55,565 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:27:55,565 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:27:55,565 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:27:55,565 INFO L85 PathProgramCache]: Analyzing trace with hash -975584275, now seen corresponding path program 2 times [2022-03-20 17:27:55,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:27:55,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486001096] [2022-03-20 17:27:55,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:27:55,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:27:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:55,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:27:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:55,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:27:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:55,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:27:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:55,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:27:55,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:27:55,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486001096] [2022-03-20 17:27:55,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486001096] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:27:55,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130866610] [2022-03-20 17:27:55,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:27:55,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:27:55,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:27:55,922 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 17:27:55,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 17:27:56,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:27:56,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:27:56,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-20 17:27:56,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:27:56,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:27:56,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:27:56,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130866610] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:27:56,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:27:56,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-03-20 17:27:56,706 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:27:56,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1814435292] [2022-03-20 17:27:56,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1814435292] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:27:56,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:27:56,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:27:56,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267252187] [2022-03-20 17:27:56,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:27:56,708 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:27:56,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:27:56,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:27:56,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-20 17:27:56,709 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) [2022-03-20 17:27:57,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:27:57,616 INFO L93 Difference]: Finished difference Result 5045 states and 7333 transitions. [2022-03-20 17:27:57,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:27:57,617 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 [2022-03-20 17:27:57,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:27:57,632 INFO L225 Difference]: With dead ends: 5045 [2022-03-20 17:27:57,632 INFO L226 Difference]: Without dead ends: 3732 [2022-03-20 17:27:57,637 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 [2022-03-20 17:27:57,637 INFO L913 BasicCegarLoop]: 3649 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, 6205 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 [2022-03-20 17:27:57,638 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2726 Valid, 6205 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 17:27:57,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3732 states. [2022-03-20 17:27:58,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3732 to 3711. [2022-03-20 17:27:58,271 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) [2022-03-20 17:27:58,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3711 states to 3711 states and 5386 transitions. [2022-03-20 17:27:58,286 INFO L78 Accepts]: Start accepts. Automaton has 3711 states and 5386 transitions. Word has length 33 [2022-03-20 17:27:58,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:27:58,286 INFO L478 AbstractCegarLoop]: Abstraction has 3711 states and 5386 transitions. [2022-03-20 17:27:58,286 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) [2022-03-20 17:27:58,286 INFO L276 IsEmpty]: Start isEmpty. Operand 3711 states and 5386 transitions. [2022-03-20 17:27:58,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-20 17:27:58,293 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:27:58,293 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] [2022-03-20 17:27:58,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-20 17:27:58,529 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 [2022-03-20 17:27:58,529 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:27:58,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:27:58,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1905624997, now seen corresponding path program 1 times [2022-03-20 17:27:58,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:27:58,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [408547904] [2022-03-20 17:27:58,534 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:27:58,534 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:27:58,534 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:27:58,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1905624997, now seen corresponding path program 2 times [2022-03-20 17:27:58,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:27:58,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056160279] [2022-03-20 17:27:58,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:27:58,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:27:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:58,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:27:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:58,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:27:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:58,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:27:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:58,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:27:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:58,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:27:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:58,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:27:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:27:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:27:58,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:27:58,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056160279] [2022-03-20 17:27:58,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056160279] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:27:58,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055350688] [2022-03-20 17:27:58,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:27:58,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:27:58,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:27:58,952 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 17:27:58,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 17:27:59,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:27:59,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:27:59,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 1479 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-20 17:27:59,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:27:59,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:27:59,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:27:59,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055350688] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:27:59,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:27:59,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-03-20 17:27:59,679 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:27:59,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [408547904] [2022-03-20 17:27:59,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [408547904] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:27:59,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:27:59,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:27:59,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053454436] [2022-03-20 17:27:59,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:27:59,680 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:27:59,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:27:59,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:27:59,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:27:59,680 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) [2022-03-20 17:28:00,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:00,389 INFO L93 Difference]: Finished difference Result 3829 states and 5529 transitions. [2022-03-20 17:28:00,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:28:00,389 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 [2022-03-20 17:28:00,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:00,402 INFO L225 Difference]: With dead ends: 3829 [2022-03-20 17:28:00,402 INFO L226 Difference]: Without dead ends: 3810 [2022-03-20 17:28:00,404 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 [2022-03-20 17:28:00,405 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 [2022-03-20 17:28:00,406 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] [2022-03-20 17:28:00,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3810 states. [2022-03-20 17:28:01,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3810 to 3804. [2022-03-20 17:28:01,017 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) [2022-03-20 17:28:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 5497 transitions. [2022-03-20 17:28:01,028 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 5497 transitions. Word has length 49 [2022-03-20 17:28:01,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:01,029 INFO L478 AbstractCegarLoop]: Abstraction has 3804 states and 5497 transitions. [2022-03-20 17:28:01,029 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) [2022-03-20 17:28:01,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 5497 transitions. [2022-03-20 17:28:01,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-20 17:28:01,030 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:01,030 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] [2022-03-20 17:28:01,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-20 17:28:01,248 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 [2022-03-20 17:28:01,248 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:01,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:01,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1919969906, now seen corresponding path program 1 times [2022-03-20 17:28:01,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:01,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1080951050] [2022-03-20 17:28:01,253 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:28:01,253 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:28:01,253 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:28:01,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1919969906, now seen corresponding path program 2 times [2022-03-20 17:28:01,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:01,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406000831] [2022-03-20 17:28:01,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:01,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:01,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:01,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:01,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:28:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:01,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:28:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:01,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:28:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:01,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:01,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:01,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:01,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406000831] [2022-03-20 17:28:01,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406000831] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:28:01,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393747120] [2022-03-20 17:28:01,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:28:01,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:28:01,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:28:01,607 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 17:28:01,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-20 17:28:02,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:28:02,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:28:02,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-20 17:28:02,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:28:02,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:28:02,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:28:02,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393747120] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:02,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:28:02,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-03-20 17:28:02,352 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:02,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1080951050] [2022-03-20 17:28:02,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1080951050] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:02,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:02,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:28:02,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528066792] [2022-03-20 17:28:02,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:02,353 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:28:02,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:02,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:28:02,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:28:02,353 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) [2022-03-20 17:28:03,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:03,326 INFO L93 Difference]: Finished difference Result 4627 states and 6683 transitions. [2022-03-20 17:28:03,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:28:03,326 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 [2022-03-20 17:28:03,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:03,344 INFO L225 Difference]: With dead ends: 4627 [2022-03-20 17:28:03,344 INFO L226 Difference]: Without dead ends: 4622 [2022-03-20 17:28:03,345 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 [2022-03-20 17:28:03,346 INFO L913 BasicCegarLoop]: 4117 mSDtfsCounter, 1721 mSDsluCounter, 2715 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:28:03,346 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1721 Valid, 6832 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:28:03,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4622 states. [2022-03-20 17:28:04,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4622 to 4578. [2022-03-20 17:28:04,082 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) [2022-03-20 17:28:04,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 6622 transitions. [2022-03-20 17:28:04,094 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 6622 transitions. Word has length 49 [2022-03-20 17:28:04,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:04,095 INFO L478 AbstractCegarLoop]: Abstraction has 4578 states and 6622 transitions. [2022-03-20 17:28:04,095 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) [2022-03-20 17:28:04,095 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 6622 transitions. [2022-03-20 17:28:04,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-20 17:28:04,096 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:04,096 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] [2022-03-20 17:28:04,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-20 17:28:04,311 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 [2022-03-20 17:28:04,311 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:04,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:04,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1061683448, now seen corresponding path program 1 times [2022-03-20 17:28:04,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:04,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [617795848] [2022-03-20 17:28:04,314 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:28:04,314 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:28:04,314 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:28:04,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1061683448, now seen corresponding path program 2 times [2022-03-20 17:28:04,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:04,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141616373] [2022-03-20 17:28:04,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:04,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:04,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:04,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:04,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:28:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:04,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:28:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:04,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:28:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:04,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:04,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:04,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:04,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141616373] [2022-03-20 17:28:04,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141616373] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:28:04,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522639573] [2022-03-20 17:28:04,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:28:04,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:28:04,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:28:04,662 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 17:28:04,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-20 17:28:05,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:28:05,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:28:05,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-20 17:28:05,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:28:05,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:28:05,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:28:05,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522639573] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:05,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:28:05,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-03-20 17:28:05,456 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:05,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [617795848] [2022-03-20 17:28:05,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [617795848] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:05,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:05,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:28:05,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771764960] [2022-03-20 17:28:05,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:05,456 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:28:05,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:05,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:28:05,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-20 17:28:05,457 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) [2022-03-20 17:28:06,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:06,405 INFO L93 Difference]: Finished difference Result 4593 states and 6640 transitions. [2022-03-20 17:28:06,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:28:06,405 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 [2022-03-20 17:28:06,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:06,425 INFO L225 Difference]: With dead ends: 4593 [2022-03-20 17:28:06,425 INFO L226 Difference]: Without dead ends: 4552 [2022-03-20 17:28:06,428 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 [2022-03-20 17:28:06,428 INFO L913 BasicCegarLoop]: 2840 mSDtfsCounter, 5 mSDsluCounter, 8501 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 11341 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:28:06,428 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 11341 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:28:06,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4552 states. [2022-03-20 17:28:07,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4552 to 4552. [2022-03-20 17:28:07,327 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) [2022-03-20 17:28:07,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4552 states to 4552 states and 6585 transitions. [2022-03-20 17:28:07,342 INFO L78 Accepts]: Start accepts. Automaton has 4552 states and 6585 transitions. Word has length 50 [2022-03-20 17:28:07,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:07,342 INFO L478 AbstractCegarLoop]: Abstraction has 4552 states and 6585 transitions. [2022-03-20 17:28:07,343 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) [2022-03-20 17:28:07,343 INFO L276 IsEmpty]: Start isEmpty. Operand 4552 states and 6585 transitions. [2022-03-20 17:28:07,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-20 17:28:07,345 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:07,345 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] [2022-03-20 17:28:07,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-20 17:28:07,564 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 [2022-03-20 17:28:07,564 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:07,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:07,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1755528464, now seen corresponding path program 1 times [2022-03-20 17:28:07,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:07,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1046167713] [2022-03-20 17:28:07,568 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:28:07,568 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:28:07,568 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:28:07,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1755528464, now seen corresponding path program 2 times [2022-03-20 17:28:07,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:07,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984551198] [2022-03-20 17:28:07,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:07,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:07,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:07,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:07,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:28:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:07,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 17:28:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:07,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:07,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:07,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984551198] [2022-03-20 17:28:07,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984551198] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:28:07,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292864060] [2022-03-20 17:28:07,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:28:07,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:28:07,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:28:07,987 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 17:28:07,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-20 17:28:08,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:28:08,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:28:08,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 1578 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 17:28:08,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:28:08,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:28:08,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:28:08,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292864060] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:08,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:28:08,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-03-20 17:28:08,929 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:08,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1046167713] [2022-03-20 17:28:08,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1046167713] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:08,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:08,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:28:08,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355571803] [2022-03-20 17:28:08,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:08,929 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:28:08,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:08,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:28:08,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-20 17:28:08,930 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) [2022-03-20 17:28:09,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:09,641 INFO L93 Difference]: Finished difference Result 7500 states and 10838 transitions. [2022-03-20 17:28:09,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:28:09,642 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 [2022-03-20 17:28:09,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:09,676 INFO L225 Difference]: With dead ends: 7500 [2022-03-20 17:28:09,677 INFO L226 Difference]: Without dead ends: 4606 [2022-03-20 17:28:09,691 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 [2022-03-20 17:28:09,692 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 [2022-03-20 17:28:09,692 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] [2022-03-20 17:28:09,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4606 states. [2022-03-20 17:28:10,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4606 to 4521. [2022-03-20 17:28:10,458 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) [2022-03-20 17:28:10,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4521 states to 4521 states and 6531 transitions. [2022-03-20 17:28:10,473 INFO L78 Accepts]: Start accepts. Automaton has 4521 states and 6531 transitions. Word has length 51 [2022-03-20 17:28:10,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:10,473 INFO L478 AbstractCegarLoop]: Abstraction has 4521 states and 6531 transitions. [2022-03-20 17:28:10,473 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) [2022-03-20 17:28:10,474 INFO L276 IsEmpty]: Start isEmpty. Operand 4521 states and 6531 transitions. [2022-03-20 17:28:10,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-20 17:28:10,475 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:10,475 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] [2022-03-20 17:28:10,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-20 17:28:10,697 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 [2022-03-20 17:28:10,697 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:10,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:10,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1561391810, now seen corresponding path program 1 times [2022-03-20 17:28:10,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:10,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [825800807] [2022-03-20 17:28:10,700 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:28:10,700 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:28:10,701 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:28:10,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1561391810, now seen corresponding path program 2 times [2022-03-20 17:28:10,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:10,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267222647] [2022-03-20 17:28:10,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:10,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:10,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:10,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:10,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:28:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:11,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 17:28:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:11,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:28:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:11,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:11,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:11,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:11,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267222647] [2022-03-20 17:28:11,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267222647] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:28:11,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847941851] [2022-03-20 17:28:11,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:28:11,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:28:11,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:28:11,057 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 17:28:11,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-20 17:28:11,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:28:11,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:28:11,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-20 17:28:11,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:28:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:28:11,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:28:11,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847941851] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:11,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:28:11,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-03-20 17:28:11,859 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:11,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [825800807] [2022-03-20 17:28:11,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [825800807] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:11,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:11,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:28:11,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542887945] [2022-03-20 17:28:11,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:11,859 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:28:11,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:11,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:28:11,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-20 17:28:11,860 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) [2022-03-20 17:28:12,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:12,681 INFO L93 Difference]: Finished difference Result 4536 states and 6549 transitions. [2022-03-20 17:28:12,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:28:12,682 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 [2022-03-20 17:28:12,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:12,702 INFO L225 Difference]: With dead ends: 4536 [2022-03-20 17:28:12,702 INFO L226 Difference]: Without dead ends: 4518 [2022-03-20 17:28:12,705 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 [2022-03-20 17:28:12,706 INFO L913 BasicCegarLoop]: 2811 mSDtfsCounter, 5 mSDsluCounter, 8404 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 11215 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 [2022-03-20 17:28:12,706 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 11215 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:28:12,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4518 states. [2022-03-20 17:28:13,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4518 to 4518. [2022-03-20 17:28:13,575 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) [2022-03-20 17:28:13,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4518 states to 4518 states and 6526 transitions. [2022-03-20 17:28:13,590 INFO L78 Accepts]: Start accepts. Automaton has 4518 states and 6526 transitions. Word has length 57 [2022-03-20 17:28:13,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:13,591 INFO L478 AbstractCegarLoop]: Abstraction has 4518 states and 6526 transitions. [2022-03-20 17:28:13,591 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) [2022-03-20 17:28:13,591 INFO L276 IsEmpty]: Start isEmpty. Operand 4518 states and 6526 transitions. [2022-03-20 17:28:13,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-20 17:28:13,593 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:13,593 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] [2022-03-20 17:28:13,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-20 17:28:13,811 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 [2022-03-20 17:28:13,811 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:13,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:13,812 INFO L85 PathProgramCache]: Analyzing trace with hash 111621356, now seen corresponding path program 1 times [2022-03-20 17:28:13,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:13,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [666715224] [2022-03-20 17:28:13,815 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:28:13,815 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:28:13,815 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:28:13,815 INFO L85 PathProgramCache]: Analyzing trace with hash 111621356, now seen corresponding path program 2 times [2022-03-20 17:28:13,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:13,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457907569] [2022-03-20 17:28:13,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:13,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:14,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:14,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:14,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:28:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:14,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-20 17:28:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:14,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:28:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:14,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:14,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:14,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:14,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457907569] [2022-03-20 17:28:14,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457907569] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:28:14,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493679634] [2022-03-20 17:28:14,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:28:14,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:28:14,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:28:14,162 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 17:28:14,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-20 17:28:14,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:28:14,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:28:14,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-20 17:28:14,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:28:14,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:28:14,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:28:14,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493679634] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:14,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:28:14,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-03-20 17:28:14,995 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:14,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [666715224] [2022-03-20 17:28:14,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [666715224] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:14,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:14,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:28:14,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982424811] [2022-03-20 17:28:14,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:14,996 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:28:14,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:14,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:28:14,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-20 17:28:14,996 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) [2022-03-20 17:28:15,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:15,776 INFO L93 Difference]: Finished difference Result 4533 states and 6544 transitions. [2022-03-20 17:28:15,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:28:15,777 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 [2022-03-20 17:28:15,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:15,810 INFO L225 Difference]: With dead ends: 4533 [2022-03-20 17:28:15,811 INFO L226 Difference]: Without dead ends: 4509 [2022-03-20 17:28:15,813 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 [2022-03-20 17:28:15,815 INFO L913 BasicCegarLoop]: 2806 mSDtfsCounter, 5 mSDsluCounter, 8390 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 11196 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:28:15,815 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 11196 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:28:15,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4509 states. [2022-03-20 17:28:16,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4509 to 4509. [2022-03-20 17:28:16,516 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) [2022-03-20 17:28:16,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4509 states to 4509 states and 6514 transitions. [2022-03-20 17:28:16,529 INFO L78 Accepts]: Start accepts. Automaton has 4509 states and 6514 transitions. Word has length 54 [2022-03-20 17:28:16,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:16,529 INFO L478 AbstractCegarLoop]: Abstraction has 4509 states and 6514 transitions. [2022-03-20 17:28:16,529 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) [2022-03-20 17:28:16,529 INFO L276 IsEmpty]: Start isEmpty. Operand 4509 states and 6514 transitions. [2022-03-20 17:28:16,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-20 17:28:16,530 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:16,530 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] [2022-03-20 17:28:16,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-20 17:28:16,751 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 [2022-03-20 17:28:16,752 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:16,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:16,752 INFO L85 PathProgramCache]: Analyzing trace with hash -851908546, now seen corresponding path program 1 times [2022-03-20 17:28:16,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:16,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1397123940] [2022-03-20 17:28:16,755 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:28:16,755 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:28:16,755 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:28:16,755 INFO L85 PathProgramCache]: Analyzing trace with hash -851908546, now seen corresponding path program 2 times [2022-03-20 17:28:16,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:16,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46405924] [2022-03-20 17:28:16,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:16,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:16,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:17,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:17,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:28:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:17,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 17:28:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:17,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:17,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:17,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46405924] [2022-03-20 17:28:17,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46405924] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:28:17,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554538150] [2022-03-20 17:28:17,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:28:17,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:28:17,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:28:17,090 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 17:28:17,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-20 17:28:17,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:28:17,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:28:17,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 17:28:17,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:28:17,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:28:17,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:28:17,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554538150] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:17,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:28:17,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-03-20 17:28:17,981 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:17,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1397123940] [2022-03-20 17:28:17,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1397123940] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:17,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:17,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:28:17,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855333154] [2022-03-20 17:28:17,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:17,982 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:28:17,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:17,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:28:17,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-20 17:28:17,982 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) [2022-03-20 17:28:18,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:18,786 INFO L93 Difference]: Finished difference Result 4523 states and 6532 transitions. [2022-03-20 17:28:18,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:28:18,787 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 [2022-03-20 17:28:18,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:18,803 INFO L225 Difference]: With dead ends: 4523 [2022-03-20 17:28:18,803 INFO L226 Difference]: Without dead ends: 4520 [2022-03-20 17:28:18,806 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 [2022-03-20 17:28:18,807 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:28:18,807 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 5491 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:28:18,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4520 states. [2022-03-20 17:28:19,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4520 to 4517. [2022-03-20 17:28:19,563 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) [2022-03-20 17:28:19,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 6526 transitions. [2022-03-20 17:28:19,575 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 6526 transitions. Word has length 51 [2022-03-20 17:28:19,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:19,576 INFO L478 AbstractCegarLoop]: Abstraction has 4517 states and 6526 transitions. [2022-03-20 17:28:19,576 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) [2022-03-20 17:28:19,576 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 6526 transitions. [2022-03-20 17:28:19,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-20 17:28:19,596 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:19,596 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] [2022-03-20 17:28:19,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-20 17:28:19,813 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 [2022-03-20 17:28:19,814 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:19,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:19,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1656471014, now seen corresponding path program 1 times [2022-03-20 17:28:19,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:19,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1835986026] [2022-03-20 17:28:19,818 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:28:19,818 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:28:19,819 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:28:19,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1656471014, now seen corresponding path program 2 times [2022-03-20 17:28:19,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:19,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591225572] [2022-03-20 17:28:19,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:19,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:20,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:20,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:20,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:28:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:20,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:28:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:20,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:28:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:20,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:20,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 17:28:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:20,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:20,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:20,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:20,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:20,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591225572] [2022-03-20 17:28:20,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591225572] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:28:20,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641923940] [2022-03-20 17:28:20,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:28:20,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:28:20,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:28:20,302 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 17:28:20,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-20 17:28:21,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:28:21,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:28:21,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 17:28:21,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:28:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:28:21,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:28:21,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641923940] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:21,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:28:21,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-03-20 17:28:21,303 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:21,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1835986026] [2022-03-20 17:28:21,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1835986026] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:21,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:21,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:28:21,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725432480] [2022-03-20 17:28:21,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:21,304 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:28:21,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:21,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:28:21,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-20 17:28:21,305 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) [2022-03-20 17:28:22,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:22,110 INFO L93 Difference]: Finished difference Result 8386 states and 12110 transitions. [2022-03-20 17:28:22,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:28:22,110 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 [2022-03-20 17:28:22,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:22,131 INFO L225 Difference]: With dead ends: 8386 [2022-03-20 17:28:22,131 INFO L226 Difference]: Without dead ends: 4521 [2022-03-20 17:28:22,142 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 [2022-03-20 17:28:22,143 INFO L913 BasicCegarLoop]: 2780 mSDtfsCounter, 3 mSDsluCounter, 8336 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11116 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:28:22,143 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 11116 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:28:22,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2022-03-20 17:28:22,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 4521. [2022-03-20 17:28:22,824 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) [2022-03-20 17:28:22,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4521 states to 4521 states and 6531 transitions. [2022-03-20 17:28:22,838 INFO L78 Accepts]: Start accepts. Automaton has 4521 states and 6531 transitions. Word has length 69 [2022-03-20 17:28:22,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:22,839 INFO L478 AbstractCegarLoop]: Abstraction has 4521 states and 6531 transitions. [2022-03-20 17:28:22,839 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) [2022-03-20 17:28:22,839 INFO L276 IsEmpty]: Start isEmpty. Operand 4521 states and 6531 transitions. [2022-03-20 17:28:22,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-20 17:28:22,840 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:22,840 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] [2022-03-20 17:28:22,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-20 17:28:23,055 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 [2022-03-20 17:28:23,055 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:23,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:23,056 INFO L85 PathProgramCache]: Analyzing trace with hash 454819355, now seen corresponding path program 1 times [2022-03-20 17:28:23,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:23,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [249828586] [2022-03-20 17:28:23,058 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:28:23,058 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:28:23,058 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:28:23,058 INFO L85 PathProgramCache]: Analyzing trace with hash 454819355, now seen corresponding path program 2 times [2022-03-20 17:28:23,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:23,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518749684] [2022-03-20 17:28:23,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:23,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:23,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:23,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:23,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:28:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:23,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:28:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:23,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:28:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:23,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:23,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 17:28:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:23,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:23,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:23,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:23,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:23,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518749684] [2022-03-20 17:28:23,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518749684] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:28:23,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839919732] [2022-03-20 17:28:23,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:28:23,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:28:23,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:28:23,487 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) [2022-03-20 17:28:23,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-20 17:28:24,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:28:24,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:28:24,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-20 17:28:24,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:28:24,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:28:24,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:28:24,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839919732] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:24,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:28:24,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-03-20 17:28:24,464 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:24,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [249828586] [2022-03-20 17:28:24,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [249828586] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:24,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:24,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:28:24,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786578736] [2022-03-20 17:28:24,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:24,464 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 17:28:24,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:24,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 17:28:24,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-20 17:28:24,465 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) [2022-03-20 17:28:25,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:25,277 INFO L93 Difference]: Finished difference Result 7729 states and 11118 transitions. [2022-03-20 17:28:25,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 17:28:25,278 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 [2022-03-20 17:28:25,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:25,295 INFO L225 Difference]: With dead ends: 7729 [2022-03-20 17:28:25,295 INFO L226 Difference]: Without dead ends: 4396 [2022-03-20 17:28:25,306 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 [2022-03-20 17:28:25,307 INFO L913 BasicCegarLoop]: 2776 mSDtfsCounter, 5 mSDsluCounter, 16628 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 19404 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:28:25,307 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 19404 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:28:25,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4396 states. [2022-03-20 17:28:26,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4396 to 4393. [2022-03-20 17:28:26,070 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) [2022-03-20 17:28:26,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4393 states to 4393 states and 6309 transitions. [2022-03-20 17:28:26,082 INFO L78 Accepts]: Start accepts. Automaton has 4393 states and 6309 transitions. Word has length 69 [2022-03-20 17:28:26,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:26,082 INFO L478 AbstractCegarLoop]: Abstraction has 4393 states and 6309 transitions. [2022-03-20 17:28:26,082 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) [2022-03-20 17:28:26,082 INFO L276 IsEmpty]: Start isEmpty. Operand 4393 states and 6309 transitions. [2022-03-20 17:28:26,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-20 17:28:26,083 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:26,083 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] [2022-03-20 17:28:26,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-20 17:28:26,287 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-20 17:28:26,287 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:26,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:26,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1515186020, now seen corresponding path program 1 times [2022-03-20 17:28:26,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:26,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [908991150] [2022-03-20 17:28:26,290 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:28:26,290 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:28:26,290 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:28:26,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1515186020, now seen corresponding path program 2 times [2022-03-20 17:28:26,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:26,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495699533] [2022-03-20 17:28:26,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:26,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:26,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:26,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:26,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:28:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:26,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 17:28:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:26,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:28:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:26,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:26,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:26,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:26,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495699533] [2022-03-20 17:28:26,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495699533] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:28:26,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070628653] [2022-03-20 17:28:26,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:28:26,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:28:26,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:28:26,620 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) [2022-03-20 17:28:26,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-20 17:28:27,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:28:27,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:28:27,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 17:28:27,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:28:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:28:27,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:28:27,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070628653] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:27,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:28:27,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-03-20 17:28:27,486 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:27,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [908991150] [2022-03-20 17:28:27,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [908991150] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:27,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:27,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:28:27,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150557799] [2022-03-20 17:28:27,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:27,487 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 17:28:27,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:27,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 17:28:27,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-03-20 17:28:27,487 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) [2022-03-20 17:28:28,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:28,168 INFO L93 Difference]: Finished difference Result 4436 states and 6360 transitions. [2022-03-20 17:28:28,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 17:28:28,169 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 [2022-03-20 17:28:28,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:28,183 INFO L225 Difference]: With dead ends: 4436 [2022-03-20 17:28:28,183 INFO L226 Difference]: Without dead ends: 4392 [2022-03-20 17:28:28,186 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 [2022-03-20 17:28:28,186 INFO L913 BasicCegarLoop]: 2772 mSDtfsCounter, 10 mSDsluCounter, 11073 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 13845 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:28:28,186 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 13845 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:28:28,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4392 states. [2022-03-20 17:28:28,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4392 to 4390. [2022-03-20 17:28:28,931 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) [2022-03-20 17:28:28,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4390 states to 4390 states and 6305 transitions. [2022-03-20 17:28:28,943 INFO L78 Accepts]: Start accepts. Automaton has 4390 states and 6305 transitions. Word has length 52 [2022-03-20 17:28:28,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:28,943 INFO L478 AbstractCegarLoop]: Abstraction has 4390 states and 6305 transitions. [2022-03-20 17:28:28,944 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) [2022-03-20 17:28:28,944 INFO L276 IsEmpty]: Start isEmpty. Operand 4390 states and 6305 transitions. [2022-03-20 17:28:28,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-20 17:28:28,945 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:28,945 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] [2022-03-20 17:28:28,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-20 17:28:29,159 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 [2022-03-20 17:28:29,159 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:29,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:29,160 INFO L85 PathProgramCache]: Analyzing trace with hash 851781494, now seen corresponding path program 1 times [2022-03-20 17:28:29,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:29,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1233779319] [2022-03-20 17:28:29,162 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:28:29,163 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:28:29,163 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:28:29,163 INFO L85 PathProgramCache]: Analyzing trace with hash 851781494, now seen corresponding path program 2 times [2022-03-20 17:28:29,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:29,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411457540] [2022-03-20 17:28:29,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:29,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:29,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:29,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:29,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:28:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:29,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 17:28:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:29,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:28:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:29,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:29,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:29,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:29,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:29,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411457540] [2022-03-20 17:28:29,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411457540] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:28:29,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259559425] [2022-03-20 17:28:29,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:28:29,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:28:29,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:28:29,508 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) [2022-03-20 17:28:29,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-20 17:28:30,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:28:30,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:28:30,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-20 17:28:30,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:28:30,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:28:30,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:28:30,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259559425] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:30,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:28:30,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-03-20 17:28:30,516 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:30,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1233779319] [2022-03-20 17:28:30,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1233779319] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:30,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:30,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:28:30,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822816609] [2022-03-20 17:28:30,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:30,516 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 17:28:30,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:30,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 17:28:30,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-20 17:28:30,517 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) [2022-03-20 17:28:31,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:31,452 INFO L93 Difference]: Finished difference Result 4408 states and 6326 transitions. [2022-03-20 17:28:31,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 17:28:31,452 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 [2022-03-20 17:28:31,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:31,469 INFO L225 Difference]: With dead ends: 4408 [2022-03-20 17:28:31,469 INFO L226 Difference]: Without dead ends: 4388 [2022-03-20 17:28:31,471 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 [2022-03-20 17:28:31,471 INFO L913 BasicCegarLoop]: 2782 mSDtfsCounter, 7 mSDsluCounter, 16652 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 19434 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:28:31,472 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 19434 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:28:31,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4388 states. [2022-03-20 17:28:32,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4388 to 4388. [2022-03-20 17:28:32,172 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) [2022-03-20 17:28:32,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 6301 transitions. [2022-03-20 17:28:32,184 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 6301 transitions. Word has length 54 [2022-03-20 17:28:32,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:32,184 INFO L478 AbstractCegarLoop]: Abstraction has 4388 states and 6301 transitions. [2022-03-20 17:28:32,184 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) [2022-03-20 17:28:32,184 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 6301 transitions. [2022-03-20 17:28:32,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-20 17:28:32,186 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:32,187 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] [2022-03-20 17:28:32,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-20 17:28:32,388 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 [2022-03-20 17:28:32,388 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:32,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:32,388 INFO L85 PathProgramCache]: Analyzing trace with hash 413420634, now seen corresponding path program 1 times [2022-03-20 17:28:32,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:32,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1943765647] [2022-03-20 17:28:32,391 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:28:32,391 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:28:32,391 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:28:32,392 INFO L85 PathProgramCache]: Analyzing trace with hash 413420634, now seen corresponding path program 2 times [2022-03-20 17:28:32,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:32,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716362629] [2022-03-20 17:28:32,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:32,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:32,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:32,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:32,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:28:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:32,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:28:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:32,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:32,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:32,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:32,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716362629] [2022-03-20 17:28:32,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716362629] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:28:32,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44865389] [2022-03-20 17:28:32,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:28:32,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:28:32,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:28:32,701 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) [2022-03-20 17:28:32,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-20 17:28:33,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:28:33,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:28:33,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 17:28:33,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:28:33,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:28:33,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:28:33,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44865389] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:33,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:28:33,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-03-20 17:28:33,656 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:33,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1943765647] [2022-03-20 17:28:33,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1943765647] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:33,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:33,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:28:33,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075321503] [2022-03-20 17:28:33,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:33,657 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 17:28:33,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:33,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 17:28:33,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:28:33,657 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) [2022-03-20 17:28:34,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:34,463 INFO L93 Difference]: Finished difference Result 4403 states and 6319 transitions. [2022-03-20 17:28:34,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 17:28:34,464 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 [2022-03-20 17:28:34,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:34,475 INFO L225 Difference]: With dead ends: 4403 [2022-03-20 17:28:34,475 INFO L226 Difference]: Without dead ends: 4382 [2022-03-20 17:28:34,477 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 [2022-03-20 17:28:34,477 INFO L913 BasicCegarLoop]: 2768 mSDtfsCounter, 18 mSDsluCounter, 16574 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 19342 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:28:34,477 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 19342 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:28:34,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2022-03-20 17:28:35,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 4382. [2022-03-20 17:28:35,130 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) [2022-03-20 17:28:35,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 6292 transitions. [2022-03-20 17:28:35,140 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 6292 transitions. Word has length 53 [2022-03-20 17:28:35,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:35,140 INFO L478 AbstractCegarLoop]: Abstraction has 4382 states and 6292 transitions. [2022-03-20 17:28:35,140 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) [2022-03-20 17:28:35,140 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 6292 transitions. [2022-03-20 17:28:35,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-20 17:28:35,142 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:35,142 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] [2022-03-20 17:28:35,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-20 17:28:35,364 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 [2022-03-20 17:28:35,364 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:35,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:35,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1241941963, now seen corresponding path program 1 times [2022-03-20 17:28:35,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:35,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [572957381] [2022-03-20 17:28:35,367 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:28:35,367 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:28:35,367 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:28:35,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1241941963, now seen corresponding path program 2 times [2022-03-20 17:28:35,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:35,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061102521] [2022-03-20 17:28:35,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:35,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:35,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:35,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:35,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:28:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:35,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:28:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:35,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:35,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:28:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:35,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:35,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:35,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061102521] [2022-03-20 17:28:35,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061102521] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:28:35,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301143119] [2022-03-20 17:28:35,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:28:35,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:28:35,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:28:35,802 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) [2022-03-20 17:28:35,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-20 17:28:36,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:28:36,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:28:36,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 1682 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 17:28:36,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:28:36,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:28:36,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:28:36,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301143119] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:36,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:28:36,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-03-20 17:28:36,709 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:36,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [572957381] [2022-03-20 17:28:36,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [572957381] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:36,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:36,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:28:36,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013289882] [2022-03-20 17:28:36,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:36,709 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 17:28:36,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:36,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 17:28:36,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-03-20 17:28:36,710 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) [2022-03-20 17:28:37,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:37,390 INFO L93 Difference]: Finished difference Result 4427 states and 6345 transitions. [2022-03-20 17:28:37,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 17:28:37,391 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 [2022-03-20 17:28:37,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:37,404 INFO L225 Difference]: With dead ends: 4427 [2022-03-20 17:28:37,404 INFO L226 Difference]: Without dead ends: 4382 [2022-03-20 17:28:37,407 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 [2022-03-20 17:28:37,407 INFO L913 BasicCegarLoop]: 2766 mSDtfsCounter, 25 mSDsluCounter, 11008 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 13774 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:28:37,408 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 13774 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:28:37,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2022-03-20 17:28:38,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 4382. [2022-03-20 17:28:38,149 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) [2022-03-20 17:28:38,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 6291 transitions. [2022-03-20 17:28:38,160 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 6291 transitions. Word has length 60 [2022-03-20 17:28:38,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:38,161 INFO L478 AbstractCegarLoop]: Abstraction has 4382 states and 6291 transitions. [2022-03-20 17:28:38,161 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) [2022-03-20 17:28:38,161 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 6291 transitions. [2022-03-20 17:28:38,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-20 17:28:38,163 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:38,163 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] [2022-03-20 17:28:38,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-20 17:28:38,383 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 [2022-03-20 17:28:38,383 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:38,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:38,384 INFO L85 PathProgramCache]: Analyzing trace with hash 2054843116, now seen corresponding path program 1 times [2022-03-20 17:28:38,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:38,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1346285726] [2022-03-20 17:28:38,386 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:28:38,386 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:28:38,386 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:28:38,386 INFO L85 PathProgramCache]: Analyzing trace with hash 2054843116, now seen corresponding path program 2 times [2022-03-20 17:28:38,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:38,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664875697] [2022-03-20 17:28:38,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:38,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:38,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:38,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:38,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:28:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:38,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:28:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:38,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:28:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:38,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:38,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-20 17:28:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:38,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:38,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:38,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664875697] [2022-03-20 17:28:38,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664875697] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:28:38,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163657459] [2022-03-20 17:28:38,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:28:38,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:28:38,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:28:38,724 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) [2022-03-20 17:28:38,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-20 17:28:39,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:28:39,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:28:39,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 1931 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-20 17:28:39,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:28:39,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:28:39,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:28:39,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163657459] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:39,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:28:39,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-03-20 17:28:39,761 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:39,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1346285726] [2022-03-20 17:28:39,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1346285726] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:39,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:39,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:28:39,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784334147] [2022-03-20 17:28:39,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:39,763 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:28:39,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:39,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:28:39,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:28:39,767 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) [2022-03-20 17:28:40,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:40,881 INFO L93 Difference]: Finished difference Result 7277 states and 10413 transitions. [2022-03-20 17:28:40,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:28:40,882 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 [2022-03-20 17:28:40,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:40,899 INFO L225 Difference]: With dead ends: 7277 [2022-03-20 17:28:40,899 INFO L226 Difference]: Without dead ends: 6964 [2022-03-20 17:28:40,902 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 [2022-03-20 17:28:40,902 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 [2022-03-20 17:28:40,902 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] [2022-03-20 17:28:40,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6964 states. [2022-03-20 17:28:41,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6964 to 6826. [2022-03-20 17:28:41,986 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) [2022-03-20 17:28:42,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6826 states to 6826 states and 9870 transitions. [2022-03-20 17:28:42,078 INFO L78 Accepts]: Start accepts. Automaton has 6826 states and 9870 transitions. Word has length 72 [2022-03-20 17:28:42,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:42,078 INFO L478 AbstractCegarLoop]: Abstraction has 6826 states and 9870 transitions. [2022-03-20 17:28:42,078 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) [2022-03-20 17:28:42,078 INFO L276 IsEmpty]: Start isEmpty. Operand 6826 states and 9870 transitions. [2022-03-20 17:28:42,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-20 17:28:42,080 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:42,080 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] [2022-03-20 17:28:42,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-20 17:28:42,280 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 [2022-03-20 17:28:42,280 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:42,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:42,281 INFO L85 PathProgramCache]: Analyzing trace with hash 898925172, now seen corresponding path program 1 times [2022-03-20 17:28:42,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:42,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1265724463] [2022-03-20 17:28:42,284 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:28:42,284 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:28:42,284 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:28:42,284 INFO L85 PathProgramCache]: Analyzing trace with hash 898925172, now seen corresponding path program 2 times [2022-03-20 17:28:42,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:42,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601162814] [2022-03-20 17:28:42,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:42,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:42,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:42,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:42,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:28:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:42,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:28:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:42,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:28:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:42,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:42,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:42,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:42,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601162814] [2022-03-20 17:28:42,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601162814] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:28:42,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570359768] [2022-03-20 17:28:42,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:28:42,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:28:42,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:28:42,682 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) [2022-03-20 17:28:42,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-20 17:28:43,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:28:43,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:28:43,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 1620 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 17:28:43,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:28:43,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:28:43,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:28:43,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570359768] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:43,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:28:43,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-03-20 17:28:43,738 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:43,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1265724463] [2022-03-20 17:28:43,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1265724463] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:43,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:43,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:28:43,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582054407] [2022-03-20 17:28:43,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:43,739 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 17:28:43,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:43,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 17:28:43,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-03-20 17:28:43,740 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) [2022-03-20 17:28:44,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:44,962 INFO L93 Difference]: Finished difference Result 6967 states and 10051 transitions. [2022-03-20 17:28:44,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 17:28:44,963 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 [2022-03-20 17:28:44,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:44,979 INFO L225 Difference]: With dead ends: 6967 [2022-03-20 17:28:44,979 INFO L226 Difference]: Without dead ends: 6855 [2022-03-20 17:28:44,981 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:28:44,982 INFO L913 BasicCegarLoop]: 2776 mSDtfsCounter, 90 mSDsluCounter, 10937 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 13713 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:28:44,982 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 13713 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:28:44,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6855 states. [2022-03-20 17:28:46,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6855 to 6828. [2022-03-20 17:28:46,084 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) [2022-03-20 17:28:46,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6828 states to 6828 states and 9871 transitions. [2022-03-20 17:28:46,103 INFO L78 Accepts]: Start accepts. Automaton has 6828 states and 9871 transitions. Word has length 60 [2022-03-20 17:28:46,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:46,104 INFO L478 AbstractCegarLoop]: Abstraction has 6828 states and 9871 transitions. [2022-03-20 17:28:46,104 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) [2022-03-20 17:28:46,104 INFO L276 IsEmpty]: Start isEmpty. Operand 6828 states and 9871 transitions. [2022-03-20 17:28:46,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-20 17:28:46,105 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:46,105 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] [2022-03-20 17:28:46,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-20 17:28:46,327 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 [2022-03-20 17:28:46,328 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:46,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:46,328 INFO L85 PathProgramCache]: Analyzing trace with hash 696011681, now seen corresponding path program 1 times [2022-03-20 17:28:46,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:46,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1216784220] [2022-03-20 17:28:46,331 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:28:46,331 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:28:46,331 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:28:46,331 INFO L85 PathProgramCache]: Analyzing trace with hash 696011681, now seen corresponding path program 2 times [2022-03-20 17:28:46,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:46,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122359883] [2022-03-20 17:28:46,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:46,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:46,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:46,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:46,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:28:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:46,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:28:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:46,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:46,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:46,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:28:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:46,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:46,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:46,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:46,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122359883] [2022-03-20 17:28:46,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122359883] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:28:46,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307330120] [2022-03-20 17:28:46,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:28:46,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:28:46,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:28:46,886 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) [2022-03-20 17:28:46,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-20 17:28:47,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:28:47,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:28:47,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 1601 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-20 17:28:47,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:28:47,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:28:47,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:28:47,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307330120] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:47,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:28:47,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2022-03-20 17:28:47,969 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:47,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1216784220] [2022-03-20 17:28:47,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1216784220] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:47,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:47,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 17:28:47,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608206982] [2022-03-20 17:28:47,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:47,970 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 17:28:47,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:47,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 17:28:47,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-03-20 17:28:47,970 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) [2022-03-20 17:28:49,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:49,053 INFO L93 Difference]: Finished difference Result 6884 states and 9934 transitions. [2022-03-20 17:28:49,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 17:28:49,053 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 [2022-03-20 17:28:49,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:49,076 INFO L225 Difference]: With dead ends: 6884 [2022-03-20 17:28:49,076 INFO L226 Difference]: Without dead ends: 6835 [2022-03-20 17:28:49,082 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 [2022-03-20 17:28:49,083 INFO L913 BasicCegarLoop]: 2757 mSDtfsCounter, 45 mSDsluCounter, 13728 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 16485 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:28:49,083 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 16485 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:28:49,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6835 states. [2022-03-20 17:28:50,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6835 to 6833. [2022-03-20 17:28:50,239 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) [2022-03-20 17:28:50,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6833 states to 6833 states and 9876 transitions. [2022-03-20 17:28:50,258 INFO L78 Accepts]: Start accepts. Automaton has 6833 states and 9876 transitions. Word has length 63 [2022-03-20 17:28:50,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:50,258 INFO L478 AbstractCegarLoop]: Abstraction has 6833 states and 9876 transitions. [2022-03-20 17:28:50,259 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) [2022-03-20 17:28:50,259 INFO L276 IsEmpty]: Start isEmpty. Operand 6833 states and 9876 transitions. [2022-03-20 17:28:50,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-20 17:28:50,260 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:50,260 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] [2022-03-20 17:28:50,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-20 17:28:50,482 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 [2022-03-20 17:28:50,482 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:50,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:50,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1314092160, now seen corresponding path program 1 times [2022-03-20 17:28:50,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:50,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1808816257] [2022-03-20 17:28:50,485 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:28:50,485 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:28:50,485 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:28:50,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1314092160, now seen corresponding path program 2 times [2022-03-20 17:28:50,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:50,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334056942] [2022-03-20 17:28:50,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:50,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:50,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:50,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:50,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:28:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:50,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:28:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:50,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:50,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:50,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:28:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:50,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:50,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:50,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334056942] [2022-03-20 17:28:50,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334056942] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:28:50,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614377708] [2022-03-20 17:28:50,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:28:50,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:28:50,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:28:50,827 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) [2022-03-20 17:28:50,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-20 17:28:51,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:28:51,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:28:51,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 1602 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-20 17:28:51,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:28:52,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:28:52,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:28:52,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614377708] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:52,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:28:52,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2022-03-20 17:28:52,037 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:52,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1808816257] [2022-03-20 17:28:52,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1808816257] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:52,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:52,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:28:52,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267748752] [2022-03-20 17:28:52,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:52,037 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 17:28:52,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:52,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 17:28:52,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-03-20 17:28:52,038 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) [2022-03-20 17:28:53,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:53,285 INFO L93 Difference]: Finished difference Result 7125 states and 10235 transitions. [2022-03-20 17:28:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 17:28:53,286 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 [2022-03-20 17:28:53,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:53,308 INFO L225 Difference]: With dead ends: 7125 [2022-03-20 17:28:53,308 INFO L226 Difference]: Without dead ends: 6826 [2022-03-20 17:28:53,314 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 [2022-03-20 17:28:53,314 INFO L913 BasicCegarLoop]: 2779 mSDtfsCounter, 7 mSDsluCounter, 22189 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 24968 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:28:53,314 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 24968 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 17:28:53,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6826 states. [2022-03-20 17:28:54,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6826 to 6826. [2022-03-20 17:28:54,488 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) [2022-03-20 17:28:54,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6826 states to 6826 states and 9866 transitions. [2022-03-20 17:28:54,509 INFO L78 Accepts]: Start accepts. Automaton has 6826 states and 9866 transitions. Word has length 63 [2022-03-20 17:28:54,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:54,509 INFO L478 AbstractCegarLoop]: Abstraction has 6826 states and 9866 transitions. [2022-03-20 17:28:54,509 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) [2022-03-20 17:28:54,509 INFO L276 IsEmpty]: Start isEmpty. Operand 6826 states and 9866 transitions. [2022-03-20 17:28:54,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-20 17:28:54,511 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:54,511 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] [2022-03-20 17:28:54,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-20 17:28:54,733 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 [2022-03-20 17:28:54,733 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:54,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:54,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1827694763, now seen corresponding path program 1 times [2022-03-20 17:28:54,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:54,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1196535904] [2022-03-20 17:28:54,736 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:28:54,737 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:28:54,737 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:28:54,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1827694763, now seen corresponding path program 2 times [2022-03-20 17:28:54,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:54,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411640624] [2022-03-20 17:28:54,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:54,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:54,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:54,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:54,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:28:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:55,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:28:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:55,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:28:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:55,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:55,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:55,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:55,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:55,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411640624] [2022-03-20 17:28:55,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411640624] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:28:55,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303205780] [2022-03-20 17:28:55,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:28:55,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:28:55,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:28:55,097 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) [2022-03-20 17:28:55,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-20 17:28:56,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:28:56,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:28:56,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 1623 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-20 17:28:56,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:28:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:28:56,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:28:56,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303205780] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:56,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:28:56,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-03-20 17:28:56,243 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:28:56,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1196535904] [2022-03-20 17:28:56,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1196535904] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:28:56,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:28:56,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:28:56,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660006189] [2022-03-20 17:28:56,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:28:56,244 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 17:28:56,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:56,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 17:28:56,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-20 17:28:56,244 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) [2022-03-20 17:28:57,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:28:57,510 INFO L93 Difference]: Finished difference Result 6844 states and 9887 transitions. [2022-03-20 17:28:57,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 17:28:57,510 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 [2022-03-20 17:28:57,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:28:57,536 INFO L225 Difference]: With dead ends: 6844 [2022-03-20 17:28:57,536 INFO L226 Difference]: Without dead ends: 6824 [2022-03-20 17:28:57,541 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 [2022-03-20 17:28:57,542 INFO L913 BasicCegarLoop]: 2750 mSDtfsCounter, 7 mSDsluCounter, 16472 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 19222 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:28:57,542 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 19222 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:28:57,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6824 states. [2022-03-20 17:28:58,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6824 to 6824. [2022-03-20 17:28:58,715 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) [2022-03-20 17:28:58,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6824 states to 6824 states and 9862 transitions. [2022-03-20 17:28:58,734 INFO L78 Accepts]: Start accepts. Automaton has 6824 states and 9862 transitions. Word has length 62 [2022-03-20 17:28:58,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:28:58,734 INFO L478 AbstractCegarLoop]: Abstraction has 6824 states and 9862 transitions. [2022-03-20 17:28:58,734 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) [2022-03-20 17:28:58,734 INFO L276 IsEmpty]: Start isEmpty. Operand 6824 states and 9862 transitions. [2022-03-20 17:28:58,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-20 17:28:58,737 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:28:58,737 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] [2022-03-20 17:28:58,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-20 17:28:58,959 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 [2022-03-20 17:28:58,959 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:28:58,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:28:58,960 INFO L85 PathProgramCache]: Analyzing trace with hash 502563313, now seen corresponding path program 1 times [2022-03-20 17:28:58,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:28:58,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1735572562] [2022-03-20 17:28:58,962 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:28:58,962 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:28:58,963 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:28:58,963 INFO L85 PathProgramCache]: Analyzing trace with hash 502563313, now seen corresponding path program 2 times [2022-03-20 17:28:58,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:28:58,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381184277] [2022-03-20 17:28:58,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:28:58,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:28:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:59,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:28:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:59,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:28:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:59,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:28:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:59,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:28:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:59,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:28:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:59,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:28:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:28:59,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:28:59,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:28:59,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381184277] [2022-03-20 17:28:59,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381184277] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:28:59,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500272071] [2022-03-20 17:28:59,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:28:59,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:28:59,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:28:59,246 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) [2022-03-20 17:28:59,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-20 17:29:00,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:29:00,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:29:00,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 1609 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-20 17:29:00,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:29:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:29:00,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:29:00,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500272071] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:00,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:29:00,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-03-20 17:29:00,295 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:29:00,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1735572562] [2022-03-20 17:29:00,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1735572562] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:00,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:00,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:29:00,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057212585] [2022-03-20 17:29:00,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:29:00,296 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:29:00,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:00,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:29:00,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-20 17:29:00,296 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) [2022-03-20 17:29:01,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:29:01,805 INFO L93 Difference]: Finished difference Result 8195 states and 11832 transitions. [2022-03-20 17:29:01,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:29:01,806 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 [2022-03-20 17:29:01,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:29:01,835 INFO L225 Difference]: With dead ends: 8195 [2022-03-20 17:29:01,835 INFO L226 Difference]: Without dead ends: 8187 [2022-03-20 17:29:01,842 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 [2022-03-20 17:29:01,842 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:29:01,842 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1928 Valid, 7176 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 17:29:01,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8187 states. [2022-03-20 17:29:03,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8187 to 6951. [2022-03-20 17:29:03,104 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) [2022-03-20 17:29:03,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6951 states to 6951 states and 10008 transitions. [2022-03-20 17:29:03,123 INFO L78 Accepts]: Start accepts. Automaton has 6951 states and 10008 transitions. Word has length 65 [2022-03-20 17:29:03,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:29:03,123 INFO L478 AbstractCegarLoop]: Abstraction has 6951 states and 10008 transitions. [2022-03-20 17:29:03,123 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) [2022-03-20 17:29:03,123 INFO L276 IsEmpty]: Start isEmpty. Operand 6951 states and 10008 transitions. [2022-03-20 17:29:03,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-20 17:29:03,126 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:29:03,126 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] [2022-03-20 17:29:03,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-20 17:29:03,343 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 [2022-03-20 17:29:03,343 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:29:03,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:29:03,344 INFO L85 PathProgramCache]: Analyzing trace with hash 118946246, now seen corresponding path program 1 times [2022-03-20 17:29:03,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:03,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [124016618] [2022-03-20 17:29:03,346 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:29:03,346 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:29:03,346 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:29:03,346 INFO L85 PathProgramCache]: Analyzing trace with hash 118946246, now seen corresponding path program 2 times [2022-03-20 17:29:03,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:29:03,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742872824] [2022-03-20 17:29:03,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:29:03,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:29:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:03,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:29:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:03,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:29:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:03,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:29:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:03,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:29:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:03,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:29:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:03,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:03,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:29:03,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:29:03,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742872824] [2022-03-20 17:29:03,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742872824] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:29:03,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769891967] [2022-03-20 17:29:03,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:29:03,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:29:03,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:29:03,692 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) [2022-03-20 17:29:03,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-20 17:29:04,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:29:04,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:29:04,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-20 17:29:04,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:29:04,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:29:04,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:29:04,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769891967] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:04,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:29:04,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2022-03-20 17:29:04,789 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:29:04,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [124016618] [2022-03-20 17:29:04,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [124016618] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:04,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:04,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:29:04,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695432598] [2022-03-20 17:29:04,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:29:04,789 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:29:04,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:04,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:29:04,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:29:04,790 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) [2022-03-20 17:29:06,274 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:29:08,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:29:09,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:29:09,552 INFO L93 Difference]: Finished difference Result 7057 states and 10147 transitions. [2022-03-20 17:29:09,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:29:09,553 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 [2022-03-20 17:29:09,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:29:09,579 INFO L225 Difference]: With dead ends: 7057 [2022-03-20 17:29:09,580 INFO L226 Difference]: Without dead ends: 6978 [2022-03-20 17:29:09,585 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 [2022-03-20 17:29:09,586 INFO L913 BasicCegarLoop]: 2757 mSDtfsCounter, 9 mSDsluCounter, 2701 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 5458 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-03-20 17:29:09,586 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 5458 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 39 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-03-20 17:29:09,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6978 states. [2022-03-20 17:29:10,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6978 to 6957. [2022-03-20 17:29:10,848 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) [2022-03-20 17:29:10,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6957 states to 6957 states and 10018 transitions. [2022-03-20 17:29:10,871 INFO L78 Accepts]: Start accepts. Automaton has 6957 states and 10018 transitions. Word has length 68 [2022-03-20 17:29:10,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:29:10,872 INFO L478 AbstractCegarLoop]: Abstraction has 6957 states and 10018 transitions. [2022-03-20 17:29:10,872 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) [2022-03-20 17:29:10,872 INFO L276 IsEmpty]: Start isEmpty. Operand 6957 states and 10018 transitions. [2022-03-20 17:29:10,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-20 17:29:10,874 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:29:10,874 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] [2022-03-20 17:29:10,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-20 17:29:11,087 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 [2022-03-20 17:29:11,087 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:29:11,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:29:11,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1475878482, now seen corresponding path program 1 times [2022-03-20 17:29:11,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:11,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [951135797] [2022-03-20 17:29:11,090 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:29:11,090 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:29:11,090 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:29:11,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1475878482, now seen corresponding path program 2 times [2022-03-20 17:29:11,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:29:11,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862737523] [2022-03-20 17:29:11,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:29:11,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:29:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:11,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:29:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:11,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:29:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:11,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:29:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:11,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 17:29:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:11,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:29:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:11,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:11,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 17:29:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:11,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:11,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:11,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:29:11,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:29:11,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862737523] [2022-03-20 17:29:11,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862737523] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:29:11,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577282118] [2022-03-20 17:29:11,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:29:11,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:29:11,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:29:11,432 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) [2022-03-20 17:29:11,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-20 17:29:12,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:29:12,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:29:12,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-20 17:29:12,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:29:12,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:29:12,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:29:12,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577282118] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:12,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:29:12,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2022-03-20 17:29:12,657 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:29:12,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [951135797] [2022-03-20 17:29:12,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [951135797] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:12,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:12,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:29:12,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370271894] [2022-03-20 17:29:12,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:29:12,658 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 17:29:12,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:12,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 17:29:12,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-03-20 17:29:12,659 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) [2022-03-20 17:29:14,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:29:14,086 INFO L93 Difference]: Finished difference Result 7028 states and 10098 transitions. [2022-03-20 17:29:14,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 17:29:14,087 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 [2022-03-20 17:29:14,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:29:14,111 INFO L225 Difference]: With dead ends: 7028 [2022-03-20 17:29:14,111 INFO L226 Difference]: Without dead ends: 6947 [2022-03-20 17:29:14,117 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 [2022-03-20 17:29:14,117 INFO L913 BasicCegarLoop]: 2769 mSDtfsCounter, 9 mSDsluCounter, 24875 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 27644 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:29:14,117 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 27644 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 17:29:14,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6947 states. [2022-03-20 17:29:15,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6947 to 6947. [2022-03-20 17:29:15,356 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) [2022-03-20 17:29:15,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6947 states to 6947 states and 10004 transitions. [2022-03-20 17:29:15,376 INFO L78 Accepts]: Start accepts. Automaton has 6947 states and 10004 transitions. Word has length 68 [2022-03-20 17:29:15,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:29:15,376 INFO L478 AbstractCegarLoop]: Abstraction has 6947 states and 10004 transitions. [2022-03-20 17:29:15,377 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) [2022-03-20 17:29:15,377 INFO L276 IsEmpty]: Start isEmpty. Operand 6947 states and 10004 transitions. [2022-03-20 17:29:15,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-20 17:29:15,379 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:29:15,379 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] [2022-03-20 17:29:15,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-20 17:29:15,583 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 [2022-03-20 17:29:15,584 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:29:15,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:29:15,584 INFO L85 PathProgramCache]: Analyzing trace with hash -774797162, now seen corresponding path program 1 times [2022-03-20 17:29:15,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:15,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [405369123] [2022-03-20 17:29:15,597 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:29:15,597 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:29:15,597 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:29:15,597 INFO L85 PathProgramCache]: Analyzing trace with hash -774797162, now seen corresponding path program 2 times [2022-03-20 17:29:15,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:29:15,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670481190] [2022-03-20 17:29:15,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:29:15,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:29:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:15,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:29:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:15,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:29:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:15,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:29:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:15,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:29:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:15,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:29:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:15,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:15,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 17:29:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:15,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:16,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:16,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:29:16,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:29:16,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670481190] [2022-03-20 17:29:16,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670481190] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:29:16,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397369580] [2022-03-20 17:29:16,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:29:16,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:29:16,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:29:16,010 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) [2022-03-20 17:29:16,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-20 17:29:17,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:29:17,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:29:17,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-20 17:29:17,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:29:17,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:29:17,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:29:17,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397369580] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:17,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:29:17,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-03-20 17:29:17,323 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:29:17,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [405369123] [2022-03-20 17:29:17,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [405369123] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:17,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:17,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:29:17,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430352748] [2022-03-20 17:29:17,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:29:17,324 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 17:29:17,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:17,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 17:29:17,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-03-20 17:29:17,325 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) [2022-03-20 17:29:19,518 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:29:21,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:29:22,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:29:22,690 INFO L93 Difference]: Finished difference Result 7078 states and 10158 transitions. [2022-03-20 17:29:22,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 17:29:22,691 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 [2022-03-20 17:29:22,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:29:22,713 INFO L225 Difference]: With dead ends: 7078 [2022-03-20 17:29:22,713 INFO L226 Difference]: Without dead ends: 6040 [2022-03-20 17:29:22,720 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 [2022-03-20 17:29:22,721 INFO L913 BasicCegarLoop]: 2775 mSDtfsCounter, 17 mSDsluCounter, 24873 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 20 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 27648 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-03-20 17:29:22,721 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 27648 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 171 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-03-20 17:29:22,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6040 states. [2022-03-20 17:29:23,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6040 to 6005. [2022-03-20 17:29:23,816 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) [2022-03-20 17:29:23,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6005 states to 6005 states and 8596 transitions. [2022-03-20 17:29:23,833 INFO L78 Accepts]: Start accepts. Automaton has 6005 states and 8596 transitions. Word has length 76 [2022-03-20 17:29:23,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:29:23,833 INFO L478 AbstractCegarLoop]: Abstraction has 6005 states and 8596 transitions. [2022-03-20 17:29:23,834 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) [2022-03-20 17:29:23,834 INFO L276 IsEmpty]: Start isEmpty. Operand 6005 states and 8596 transitions. [2022-03-20 17:29:23,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-20 17:29:23,835 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:29:23,836 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:29:23,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-20 17:29:24,047 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 [2022-03-20 17:29:24,047 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:29:24,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:29:24,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1149198091, now seen corresponding path program 1 times [2022-03-20 17:29:24,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:24,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1499742737] [2022-03-20 17:29:24,050 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:29:24,050 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:29:24,050 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:29:24,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1149198091, now seen corresponding path program 2 times [2022-03-20 17:29:24,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:29:24,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967863329] [2022-03-20 17:29:24,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:29:24,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:29:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:24,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:29:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:24,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:29:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:24,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:29:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:24,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:29:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:24,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:24,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:29:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:24,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:29:24,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:29:24,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967863329] [2022-03-20 17:29:24,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967863329] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:29:24,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905551377] [2022-03-20 17:29:24,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:29:24,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:29:24,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:29:24,441 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) [2022-03-20 17:29:24,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-20 17:29:25,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:29:25,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:29:25,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-20 17:29:25,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:29:25,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:29:25,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:29:25,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905551377] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:25,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:29:25,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-03-20 17:29:25,894 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:29:25,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1499742737] [2022-03-20 17:29:25,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1499742737] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:25,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:25,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:29:25,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102575314] [2022-03-20 17:29:25,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:29:25,895 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 17:29:25,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:25,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 17:29:25,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-03-20 17:29:25,896 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) [2022-03-20 17:29:30,819 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:29:32,837 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:29:37,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:29:37,889 INFO L93 Difference]: Finished difference Result 6118 states and 8751 transitions. [2022-03-20 17:29:37,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 17:29:37,889 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 [2022-03-20 17:29:37,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:29:37,908 INFO L225 Difference]: With dead ends: 6118 [2022-03-20 17:29:37,909 INFO L226 Difference]: Without dead ends: 5999 [2022-03-20 17:29:37,919 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 [2022-03-20 17:29:37,920 INFO L913 BasicCegarLoop]: 2344 mSDtfsCounter, 3400 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 5161 mSolverCounterSat, 1484 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3835 SdHoareTripleChecker+Valid, 3418 SdHoareTripleChecker+Invalid, 6646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1484 IncrementalHoareTripleChecker+Valid, 5161 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-03-20 17:29:37,921 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3835 Valid, 3418 Invalid, 6646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1484 Valid, 5161 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2022-03-20 17:29:37,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5999 states. [2022-03-20 17:29:39,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5999 to 5930. [2022-03-20 17:29:39,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5930 states, 3957 states have (on average 1.350518069244377) internal successors, (5344), 4058 states have internal predecessors, (5344), 1564 states have call successors, (1564), 384 states have call predecessors, (1564), 408 states have return successors, (1598), 1550 states have call predecessors, (1598), 1553 states have call successors, (1598) [2022-03-20 17:29:39,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5930 states to 5930 states and 8506 transitions. [2022-03-20 17:29:39,141 INFO L78 Accepts]: Start accepts. Automaton has 5930 states and 8506 transitions. Word has length 66 [2022-03-20 17:29:39,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:29:39,142 INFO L478 AbstractCegarLoop]: Abstraction has 5930 states and 8506 transitions. [2022-03-20 17:29:39,142 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) [2022-03-20 17:29:39,142 INFO L276 IsEmpty]: Start isEmpty. Operand 5930 states and 8506 transitions. [2022-03-20 17:29:39,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-20 17:29:39,157 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:29:39,157 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] [2022-03-20 17:29:39,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-20 17:29:39,359 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 [2022-03-20 17:29:39,359 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:29:39,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:29:39,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1417992752, now seen corresponding path program 1 times [2022-03-20 17:29:39,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:39,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [706444969] [2022-03-20 17:29:39,363 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:29:39,363 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:29:39,363 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:29:39,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1417992752, now seen corresponding path program 2 times [2022-03-20 17:29:39,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:29:39,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990500315] [2022-03-20 17:29:39,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:29:39,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:29:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:29:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:29:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:29:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:29:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:29:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:39,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:29:39,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:29:39,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990500315] [2022-03-20 17:29:39,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990500315] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:29:39,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889348580] [2022-03-20 17:29:39,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:29:39,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:29:39,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:29:39,793 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) [2022-03-20 17:29:39,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-20 17:29:40,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:29:40,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:29:40,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 1817 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-20 17:29:40,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:29:41,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:29:41,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:29:41,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889348580] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:41,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:29:41,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-03-20 17:29:41,088 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:29:41,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [706444969] [2022-03-20 17:29:41,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [706444969] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:41,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:41,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:29:41,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394697866] [2022-03-20 17:29:41,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:29:41,088 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:29:41,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:41,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:29:41,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-20 17:29:41,089 INFO L87 Difference]: Start difference. First operand 5930 states and 8506 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 17:29:42,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:29:42,249 INFO L93 Difference]: Finished difference Result 5987 states and 8577 transitions. [2022-03-20 17:29:42,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:29:42,250 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 [2022-03-20 17:29:42,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:29:42,269 INFO L225 Difference]: With dead ends: 5987 [2022-03-20 17:29:42,269 INFO L226 Difference]: Without dead ends: 5942 [2022-03-20 17:29:42,273 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-20 17:29:42,274 INFO L913 BasicCegarLoop]: 2737 mSDtfsCounter, 15 mSDsluCounter, 2691 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 5428 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 [2022-03-20 17:29:42,275 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 5428 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:29:42,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5942 states. [2022-03-20 17:29:43,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5942 to 5930. [2022-03-20 17:29:43,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5930 states, 3957 states have (on average 1.350518069244377) internal successors, (5344), 4058 states have internal predecessors, (5344), 1564 states have call successors, (1564), 384 states have call predecessors, (1564), 408 states have return successors, (1598), 1550 states have call predecessors, (1598), 1553 states have call successors, (1598) [2022-03-20 17:29:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5930 states to 5930 states and 8506 transitions. [2022-03-20 17:29:43,475 INFO L78 Accepts]: Start accepts. Automaton has 5930 states and 8506 transitions. Word has length 69 [2022-03-20 17:29:43,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:29:43,476 INFO L478 AbstractCegarLoop]: Abstraction has 5930 states and 8506 transitions. [2022-03-20 17:29:43,476 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) [2022-03-20 17:29:43,476 INFO L276 IsEmpty]: Start isEmpty. Operand 5930 states and 8506 transitions. [2022-03-20 17:29:43,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-20 17:29:43,478 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:29:43,478 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] [2022-03-20 17:29:43,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-20 17:29:43,691 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 [2022-03-20 17:29:43,691 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:29:43,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:29:43,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1825278757, now seen corresponding path program 1 times [2022-03-20 17:29:43,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:43,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [280846483] [2022-03-20 17:29:43,694 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:29:43,694 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:29:43,694 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:29:43,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1825278757, now seen corresponding path program 2 times [2022-03-20 17:29:43,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:29:43,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508597539] [2022-03-20 17:29:43,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:29:43,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:29:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:43,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:29:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:43,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:29:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:43,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:29:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:44,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:29:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:44,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:44,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:29:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:44,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:44,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 17:29:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:44,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:44,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:44,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:29:44,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:29:44,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508597539] [2022-03-20 17:29:44,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508597539] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:29:44,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563853410] [2022-03-20 17:29:44,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:29:44,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:29:44,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:29:44,128 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) [2022-03-20 17:29:44,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-20 17:29:45,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:29:45,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:29:45,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-20 17:29:45,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:29:45,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:29:45,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:29:45,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563853410] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:45,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:29:45,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-03-20 17:29:45,615 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:29:45,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [280846483] [2022-03-20 17:29:45,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [280846483] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:45,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:45,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:29:45,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296143293] [2022-03-20 17:29:45,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:29:45,616 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 17:29:45,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:45,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 17:29:45,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-03-20 17:29:45,616 INFO L87 Difference]: Start difference. First operand 5930 states and 8506 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 2 states have call successors, (10) [2022-03-20 17:29:46,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:29:46,915 INFO L93 Difference]: Finished difference Result 5949 states and 8528 transitions. [2022-03-20 17:29:46,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 17:29:46,915 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 [2022-03-20 17:29:46,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:29:46,934 INFO L225 Difference]: With dead ends: 5949 [2022-03-20 17:29:46,934 INFO L226 Difference]: Without dead ends: 5919 [2022-03-20 17:29:46,938 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 [2022-03-20 17:29:46,938 INFO L913 BasicCegarLoop]: 2747 mSDtfsCounter, 9 mSDsluCounter, 24668 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 27415 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:29:46,939 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 27415 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 17:29:46,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5919 states. [2022-03-20 17:29:48,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5919 to 5919. [2022-03-20 17:29:48,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5919 states, 3949 states have (on average 1.350974930362117) internal successors, (5335), 4050 states have internal predecessors, (5335), 1563 states have call successors, (1563), 384 states have call predecessors, (1563), 406 states have return successors, (1595), 1547 states have call predecessors, (1595), 1552 states have call successors, (1595) [2022-03-20 17:29:48,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5919 states to 5919 states and 8493 transitions. [2022-03-20 17:29:48,108 INFO L78 Accepts]: Start accepts. Automaton has 5919 states and 8493 transitions. Word has length 76 [2022-03-20 17:29:48,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:29:48,108 INFO L478 AbstractCegarLoop]: Abstraction has 5919 states and 8493 transitions. [2022-03-20 17:29:48,108 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) [2022-03-20 17:29:48,109 INFO L276 IsEmpty]: Start isEmpty. Operand 5919 states and 8493 transitions. [2022-03-20 17:29:48,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-20 17:29:48,110 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:29:48,110 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] [2022-03-20 17:29:48,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-20 17:29:48,334 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 [2022-03-20 17:29:48,334 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:29:48,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:29:48,334 INFO L85 PathProgramCache]: Analyzing trace with hash 2036422710, now seen corresponding path program 1 times [2022-03-20 17:29:48,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:48,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [870723863] [2022-03-20 17:29:48,337 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:29:48,337 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:29:48,337 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:29:48,337 INFO L85 PathProgramCache]: Analyzing trace with hash 2036422710, now seen corresponding path program 2 times [2022-03-20 17:29:48,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:29:48,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800368070] [2022-03-20 17:29:48,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:29:48,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:29:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:48,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:29:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:48,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:29:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:48,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:29:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:48,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:29:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:48,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:48,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:29:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:48,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:29:48,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:29:48,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800368070] [2022-03-20 17:29:48,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800368070] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:29:48,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709576496] [2022-03-20 17:29:48,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:29:48,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:29:48,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:29:48,645 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) [2022-03-20 17:29:48,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-20 17:29:49,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:29:49,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:29:49,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-20 17:29:49,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:29:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:29:49,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:29:49,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709576496] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:49,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:29:49,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-03-20 17:29:49,950 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:29:49,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [870723863] [2022-03-20 17:29:49,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [870723863] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:49,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:49,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:29:49,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146371672] [2022-03-20 17:29:49,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:29:49,950 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:29:49,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:49,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:29:49,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-20 17:29:49,951 INFO L87 Difference]: Start difference. First operand 5919 states and 8493 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 17:29:51,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:29:51,537 INFO L93 Difference]: Finished difference Result 7290 states and 10462 transitions. [2022-03-20 17:29:51,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:29:51,538 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 [2022-03-20 17:29:51,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:29:51,555 INFO L225 Difference]: With dead ends: 7290 [2022-03-20 17:29:51,555 INFO L226 Difference]: Without dead ends: 7277 [2022-03-20 17:29:51,557 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 [2022-03-20 17:29:51,558 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 [2022-03-20 17:29:51,558 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] [2022-03-20 17:29:51,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7277 states. [2022-03-20 17:29:52,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7277 to 6045. [2022-03-20 17:29:52,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6045 states, 4040 states have (on average 1.3448019801980198) internal successors, (5433), 4132 states have internal predecessors, (5433), 1573 states have call successors, (1573), 394 states have call predecessors, (1573), 431 states have return successors, (1631), 1583 states have call predecessors, (1631), 1562 states have call successors, (1631) [2022-03-20 17:29:52,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6045 states to 6045 states and 8637 transitions. [2022-03-20 17:29:52,793 INFO L78 Accepts]: Start accepts. Automaton has 6045 states and 8637 transitions. Word has length 67 [2022-03-20 17:29:52,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:29:52,793 INFO L478 AbstractCegarLoop]: Abstraction has 6045 states and 8637 transitions. [2022-03-20 17:29:52,793 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) [2022-03-20 17:29:52,793 INFO L276 IsEmpty]: Start isEmpty. Operand 6045 states and 8637 transitions. [2022-03-20 17:29:52,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-20 17:29:52,795 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:29:52,795 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] [2022-03-20 17:29:52,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-03-20 17:29:53,018 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 [2022-03-20 17:29:53,019 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:29:53,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:29:53,019 INFO L85 PathProgramCache]: Analyzing trace with hash -822110410, now seen corresponding path program 1 times [2022-03-20 17:29:53,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:53,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [559829395] [2022-03-20 17:29:53,023 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:29:53,023 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:29:53,023 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:29:53,023 INFO L85 PathProgramCache]: Analyzing trace with hash -822110410, now seen corresponding path program 2 times [2022-03-20 17:29:53,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:29:53,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019074880] [2022-03-20 17:29:53,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:29:53,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:29:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:53,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:29:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:53,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:29:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:53,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:29:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:53,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:29:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:53,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:53,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:29:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:53,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:29:53,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:29:53,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019074880] [2022-03-20 17:29:53,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019074880] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:29:53,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395825427] [2022-03-20 17:29:53,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:29:53,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:29:53,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:29:53,374 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) [2022-03-20 17:29:53,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-20 17:29:54,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:29:54,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:29:54,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-20 17:29:54,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:29:54,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:29:54,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:29:54,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395825427] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:54,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:29:54,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 9 [2022-03-20 17:29:54,612 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:29:54,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [559829395] [2022-03-20 17:29:54,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [559829395] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:54,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:54,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:29:54,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592978348] [2022-03-20 17:29:54,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:29:54,613 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:29:54,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:54,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:29:54,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-20 17:29:54,613 INFO L87 Difference]: Start difference. First operand 6045 states and 8637 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 17:29:55,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:29:55,799 INFO L93 Difference]: Finished difference Result 8675 states and 12451 transitions. [2022-03-20 17:29:55,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:29:55,799 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 [2022-03-20 17:29:55,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:29:55,816 INFO L225 Difference]: With dead ends: 8675 [2022-03-20 17:29:55,816 INFO L226 Difference]: Without dead ends: 6071 [2022-03-20 17:29:55,824 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 [2022-03-20 17:29:55,835 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 [2022-03-20 17:29:55,835 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] [2022-03-20 17:29:55,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6071 states. [2022-03-20 17:29:57,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6071 to 6051. [2022-03-20 17:29:57,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6051 states, 4046 states have (on average 1.3450321304992585) internal successors, (5442), 4138 states have internal predecessors, (5442), 1573 states have call successors, (1573), 394 states have call predecessors, (1573), 431 states have return successors, (1631), 1583 states have call predecessors, (1631), 1562 states have call successors, (1631) [2022-03-20 17:29:57,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6051 states to 6051 states and 8646 transitions. [2022-03-20 17:29:57,059 INFO L78 Accepts]: Start accepts. Automaton has 6051 states and 8646 transitions. Word has length 67 [2022-03-20 17:29:57,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:29:57,059 INFO L478 AbstractCegarLoop]: Abstraction has 6051 states and 8646 transitions. [2022-03-20 17:29:57,059 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) [2022-03-20 17:29:57,059 INFO L276 IsEmpty]: Start isEmpty. Operand 6051 states and 8646 transitions. [2022-03-20 17:29:57,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-20 17:29:57,061 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:29:57,061 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] [2022-03-20 17:29:57,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-20 17:29:57,275 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 [2022-03-20 17:29:57,275 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:29:57,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:29:57,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1783913144, now seen corresponding path program 1 times [2022-03-20 17:29:57,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:57,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [302366870] [2022-03-20 17:29:57,278 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:29:57,278 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:29:57,278 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:29:57,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1783913144, now seen corresponding path program 2 times [2022-03-20 17:29:57,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:29:57,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910083022] [2022-03-20 17:29:57,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:29:57,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:29:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:57,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:29:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:57,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:29:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:57,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:29:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:57,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:29:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:57,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:29:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:57,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:29:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:29:57,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:29:57,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:29:57,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910083022] [2022-03-20 17:29:57,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910083022] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:29:57,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641956858] [2022-03-20 17:29:57,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:29:57,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:29:57,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:29:57,606 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) [2022-03-20 17:29:57,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-20 17:29:58,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:29:58,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:29:58,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-20 17:29:58,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:29:59,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:29:59,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:29:59,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641956858] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:59,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:29:59,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-03-20 17:29:59,120 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:29:59,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [302366870] [2022-03-20 17:29:59,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [302366870] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:29:59,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:29:59,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:29:59,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437754623] [2022-03-20 17:29:59,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:29:59,121 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 17:29:59,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:29:59,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 17:29:59,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-03-20 17:29:59,121 INFO L87 Difference]: Start difference. First operand 6051 states and 8646 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-03-20 17:30:04,678 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:30:06,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:30:12,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:30:12,108 INFO L93 Difference]: Finished difference Result 6122 states and 8729 transitions. [2022-03-20 17:30:12,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 17:30:12,108 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 [2022-03-20 17:30:12,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:30:12,124 INFO L225 Difference]: With dead ends: 6122 [2022-03-20 17:30:12,124 INFO L226 Difference]: Without dead ends: 5892 [2022-03-20 17:30:12,127 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-20 17:30:12,128 INFO L913 BasicCegarLoop]: 2263 mSDtfsCounter, 1822 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 5098 mSolverCounterSat, 501 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s 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, 11.5s IncrementalHoareTripleChecker+Time [2022-03-20 17:30:12,128 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2249 Valid, 3398 Invalid, 5601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 5098 Invalid, 2 Unknown, 0 Unchecked, 11.5s Time] [2022-03-20 17:30:12,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5892 states. [2022-03-20 17:30:13,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5892 to 5890. [2022-03-20 17:30:13,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5890 states, 3928 states have (on average 1.3536150712830957) internal successors, (5317), 4042 states have internal predecessors, (5317), 1564 states have call successors, (1564), 386 states have call predecessors, (1564), 397 states have return successors, (1574), 1526 states have call predecessors, (1574), 1553 states have call successors, (1574) [2022-03-20 17:30:13,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5890 states to 5890 states and 8455 transitions. [2022-03-20 17:30:13,413 INFO L78 Accepts]: Start accepts. Automaton has 5890 states and 8455 transitions. Word has length 67 [2022-03-20 17:30:13,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:30:13,413 INFO L478 AbstractCegarLoop]: Abstraction has 5890 states and 8455 transitions. [2022-03-20 17:30:13,413 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) [2022-03-20 17:30:13,414 INFO L276 IsEmpty]: Start isEmpty. Operand 5890 states and 8455 transitions. [2022-03-20 17:30:13,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-20 17:30:13,415 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:30:13,415 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] [2022-03-20 17:30:13,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-20 17:30:13,635 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 [2022-03-20 17:30:13,635 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:30:13,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:30:13,636 INFO L85 PathProgramCache]: Analyzing trace with hash -844197040, now seen corresponding path program 1 times [2022-03-20 17:30:13,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:13,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [251291083] [2022-03-20 17:30:13,647 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:30:13,648 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:30:13,648 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:30:13,648 INFO L85 PathProgramCache]: Analyzing trace with hash -844197040, now seen corresponding path program 2 times [2022-03-20 17:30:13,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:30:13,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413492801] [2022-03-20 17:30:13,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:30:13,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:30:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:13,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:30:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:13,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:30:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:13,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:30:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:13,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:30:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:13,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:30:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:13,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:30:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:13,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:30:13,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:30:13,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413492801] [2022-03-20 17:30:13,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413492801] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:30:13,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790185628] [2022-03-20 17:30:13,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:30:13,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:30:13,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:30:13,991 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) [2022-03-20 17:30:13,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-20 17:30:15,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:30:15,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:30:15,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-20 17:30:15,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:30:15,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:30:15,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:30:15,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790185628] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:15,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:30:15,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2022-03-20 17:30:15,335 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:30:15,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [251291083] [2022-03-20 17:30:15,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [251291083] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:15,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:30:15,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 17:30:15,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588132932] [2022-03-20 17:30:15,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:30:15,335 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 17:30:15,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:15,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 17:30:15,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-03-20 17:30:15,336 INFO L87 Difference]: Start difference. First operand 5890 states and 8455 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-20 17:30:16,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:30:16,720 INFO L93 Difference]: Finished difference Result 5929 states and 8500 transitions. [2022-03-20 17:30:16,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 17:30:16,721 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 [2022-03-20 17:30:16,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:30:16,739 INFO L225 Difference]: With dead ends: 5929 [2022-03-20 17:30:16,740 INFO L226 Difference]: Without dead ends: 5925 [2022-03-20 17:30:16,743 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 [2022-03-20 17:30:16,749 INFO L913 BasicCegarLoop]: 2719 mSDtfsCounter, 11 mSDsluCounter, 19015 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21734 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:30:16,759 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 21734 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:30:16,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5925 states. [2022-03-20 17:30:18,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5925 to 5910. [2022-03-20 17:30:18,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5910 states, 3945 states have (on average 1.3523447401774398) internal successors, (5335), 4060 states have internal predecessors, (5335), 1565 states have call successors, (1565), 386 states have call predecessors, (1565), 399 states have return successors, (1580), 1529 states have call predecessors, (1580), 1554 states have call successors, (1580) [2022-03-20 17:30:18,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5910 states to 5910 states and 8480 transitions. [2022-03-20 17:30:18,047 INFO L78 Accepts]: Start accepts. Automaton has 5910 states and 8480 transitions. Word has length 68 [2022-03-20 17:30:18,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:30:18,047 INFO L478 AbstractCegarLoop]: Abstraction has 5910 states and 8480 transitions. [2022-03-20 17:30:18,047 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) [2022-03-20 17:30:18,047 INFO L276 IsEmpty]: Start isEmpty. Operand 5910 states and 8480 transitions. [2022-03-20 17:30:18,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-20 17:30:18,066 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:30:18,066 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] [2022-03-20 17:30:18,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-03-20 17:30:18,267 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 [2022-03-20 17:30:18,268 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:30:18,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:30:18,268 INFO L85 PathProgramCache]: Analyzing trace with hash -843920210, now seen corresponding path program 1 times [2022-03-20 17:30:18,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:18,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [160432498] [2022-03-20 17:30:18,270 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:30:18,270 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:30:18,270 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:30:18,270 INFO L85 PathProgramCache]: Analyzing trace with hash -843920210, now seen corresponding path program 2 times [2022-03-20 17:30:18,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:30:18,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638136513] [2022-03-20 17:30:18,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:30:18,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:30:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:18,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:30:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:18,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:30:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:18,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:30:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:18,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:30:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:18,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:30:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:18,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:30:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:18,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:30:18,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:30:18,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638136513] [2022-03-20 17:30:18,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638136513] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:30:18,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83204631] [2022-03-20 17:30:18,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:30:18,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:30:18,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:30:18,595 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) [2022-03-20 17:30:18,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-20 17:30:19,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:30:19,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:30:19,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-20 17:30:19,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:30:20,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:30:20,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:30:20,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83204631] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:20,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:30:20,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2022-03-20 17:30:20,006 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:30:20,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [160432498] [2022-03-20 17:30:20,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [160432498] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:20,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:30:20,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 17:30:20,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238728314] [2022-03-20 17:30:20,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:30:20,006 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 17:30:20,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:20,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 17:30:20,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-03-20 17:30:20,007 INFO L87 Difference]: Start difference. First operand 5910 states and 8480 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) [2022-03-20 17:30:21,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:30:21,581 INFO L93 Difference]: Finished difference Result 5929 states and 8501 transitions. [2022-03-20 17:30:21,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 17:30:21,582 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 [2022-03-20 17:30:21,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:30:21,600 INFO L225 Difference]: With dead ends: 5929 [2022-03-20 17:30:21,600 INFO L226 Difference]: Without dead ends: 5911 [2022-03-20 17:30:21,604 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 [2022-03-20 17:30:21,605 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, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 17:30:21,605 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 21607 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 17:30:21,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5911 states. [2022-03-20 17:30:22,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5911 to 5907. [2022-03-20 17:30:22,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5907 states, 3942 states have (on average 1.3526128868594622) internal successors, (5332), 4058 states have internal predecessors, (5332), 1565 states have call successors, (1565), 386 states have call predecessors, (1565), 399 states have return successors, (1579), 1528 states have call predecessors, (1579), 1554 states have call successors, (1579) [2022-03-20 17:30:22,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5907 states to 5907 states and 8476 transitions. [2022-03-20 17:30:22,869 INFO L78 Accepts]: Start accepts. Automaton has 5907 states and 8476 transitions. Word has length 68 [2022-03-20 17:30:22,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:30:22,869 INFO L478 AbstractCegarLoop]: Abstraction has 5907 states and 8476 transitions. [2022-03-20 17:30:22,869 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) [2022-03-20 17:30:22,869 INFO L276 IsEmpty]: Start isEmpty. Operand 5907 states and 8476 transitions. [2022-03-20 17:30:22,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-20 17:30:22,871 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:30:22,871 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] [2022-03-20 17:30:22,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-20 17:30:23,085 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 [2022-03-20 17:30:23,086 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:30:23,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:30:23,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1268963390, now seen corresponding path program 1 times [2022-03-20 17:30:23,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:23,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1093766492] [2022-03-20 17:30:23,088 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:30:23,089 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:30:23,089 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:30:23,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1268963390, now seen corresponding path program 2 times [2022-03-20 17:30:23,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:30:23,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824393221] [2022-03-20 17:30:23,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:30:23,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:30:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:23,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:30:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:23,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:30:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:23,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:30:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:23,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-20 17:30:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:23,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:30:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:23,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-20 17:30:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:23,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-03-20 17:30:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:23,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:30:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:23,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:30:23,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:30:23,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824393221] [2022-03-20 17:30:23,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824393221] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:30:23,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017650092] [2022-03-20 17:30:23,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:30:23,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:30:23,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:30:23,478 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) [2022-03-20 17:30:23,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-20 17:30:24,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:30:24,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:30:24,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-20 17:30:24,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:30:24,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:30:24,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:30:24,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017650092] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:24,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:30:24,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-03-20 17:30:24,931 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:30:24,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1093766492] [2022-03-20 17:30:24,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1093766492] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:24,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:30:24,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:30:24,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823219445] [2022-03-20 17:30:24,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:30:24,931 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:30:24,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:24,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:30:24,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:30:24,932 INFO L87 Difference]: Start difference. First operand 5907 states and 8476 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) [2022-03-20 17:30:26,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:30:26,186 INFO L93 Difference]: Finished difference Result 5956 states and 8534 transitions. [2022-03-20 17:30:26,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:30:26,186 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 [2022-03-20 17:30:26,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:30:26,202 INFO L225 Difference]: With dead ends: 5956 [2022-03-20 17:30:26,202 INFO L226 Difference]: Without dead ends: 5952 [2022-03-20 17:30:26,204 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 [2022-03-20 17:30:26,205 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 [2022-03-20 17:30:26,205 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] [2022-03-20 17:30:26,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5952 states. [2022-03-20 17:30:27,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5952 to 5905. [2022-03-20 17:30:27,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5905 states, 3942 states have (on average 1.352105530187722) internal successors, (5330), 4056 states have internal predecessors, (5330), 1563 states have call successors, (1563), 386 states have call predecessors, (1563), 399 states have return successors, (1579), 1528 states have call predecessors, (1579), 1554 states have call successors, (1579) [2022-03-20 17:30:27,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5905 states to 5905 states and 8472 transitions. [2022-03-20 17:30:27,493 INFO L78 Accepts]: Start accepts. Automaton has 5905 states and 8472 transitions. Word has length 74 [2022-03-20 17:30:27,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:30:27,493 INFO L478 AbstractCegarLoop]: Abstraction has 5905 states and 8472 transitions. [2022-03-20 17:30:27,493 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) [2022-03-20 17:30:27,493 INFO L276 IsEmpty]: Start isEmpty. Operand 5905 states and 8472 transitions. [2022-03-20 17:30:27,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-20 17:30:27,495 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:30:27,495 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] [2022-03-20 17:30:27,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-20 17:30:27,711 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 [2022-03-20 17:30:27,711 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:30:27,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:30:27,712 INFO L85 PathProgramCache]: Analyzing trace with hash -978476308, now seen corresponding path program 1 times [2022-03-20 17:30:27,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:27,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1519062645] [2022-03-20 17:30:27,714 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:30:27,714 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:30:27,714 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:30:27,715 INFO L85 PathProgramCache]: Analyzing trace with hash -978476308, now seen corresponding path program 2 times [2022-03-20 17:30:27,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:30:27,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374934187] [2022-03-20 17:30:27,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:30:27,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:30:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:27,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:30:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:27,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:30:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:27,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:30:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:28,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:30:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:28,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:30:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:28,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:30:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:28,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:30:28,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:30:28,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374934187] [2022-03-20 17:30:28,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374934187] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:30:28,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029316956] [2022-03-20 17:30:28,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:30:28,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:30:28,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:30:28,048 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) [2022-03-20 17:30:28,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-20 17:30:29,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:30:29,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:30:29,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-20 17:30:29,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:30:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:30:29,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:30:29,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029316956] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:29,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:30:29,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-03-20 17:30:29,611 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:30:29,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1519062645] [2022-03-20 17:30:29,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1519062645] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:29,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:30:29,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:30:29,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490065929] [2022-03-20 17:30:29,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:30:29,612 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:30:29,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:29,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:30:29,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-20 17:30:29,612 INFO L87 Difference]: Start difference. First operand 5905 states and 8472 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) [2022-03-20 17:30:33,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:30:33,963 INFO L93 Difference]: Finished difference Result 7139 states and 10282 transitions. [2022-03-20 17:30:33,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 17:30:33,964 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 [2022-03-20 17:30:33,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:30:33,985 INFO L225 Difference]: With dead ends: 7139 [2022-03-20 17:30:33,985 INFO L226 Difference]: Without dead ends: 7118 [2022-03-20 17:30:33,990 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 [2022-03-20 17:30:33,990 INFO L913 BasicCegarLoop]: 4524 mSDtfsCounter, 4613 mSDsluCounter, 3325 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4635 SdHoareTripleChecker+Valid, 7849 SdHoareTripleChecker+Invalid, 2356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-20 17:30:33,990 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4635 Valid, 7849 Invalid, 2356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 1990 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-20 17:30:33,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7118 states. [2022-03-20 17:30:35,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7118 to 5887. [2022-03-20 17:30:35,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5887 states, 3928 states have (on average 1.3523421588594704) internal successors, (5312), 4040 states have internal predecessors, (5312), 1561 states have call successors, (1561), 386 states have call predecessors, (1561), 397 states have return successors, (1573), 1525 states have call predecessors, (1573), 1552 states have call successors, (1573) [2022-03-20 17:30:35,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5887 states to 5887 states and 8446 transitions. [2022-03-20 17:30:35,518 INFO L78 Accepts]: Start accepts. Automaton has 5887 states and 8446 transitions. Word has length 69 [2022-03-20 17:30:35,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:30:35,518 INFO L478 AbstractCegarLoop]: Abstraction has 5887 states and 8446 transitions. [2022-03-20 17:30:35,518 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) [2022-03-20 17:30:35,518 INFO L276 IsEmpty]: Start isEmpty. Operand 5887 states and 8446 transitions. [2022-03-20 17:30:35,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-20 17:30:35,520 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:30:35,520 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] [2022-03-20 17:30:35,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-03-20 17:30:35,735 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 [2022-03-20 17:30:35,735 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:30:35,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:30:35,736 INFO L85 PathProgramCache]: Analyzing trace with hash 635026972, now seen corresponding path program 1 times [2022-03-20 17:30:35,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:35,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1985232115] [2022-03-20 17:30:35,742 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:30:35,742 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:30:35,742 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:30:35,742 INFO L85 PathProgramCache]: Analyzing trace with hash 635026972, now seen corresponding path program 2 times [2022-03-20 17:30:35,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:30:35,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524580596] [2022-03-20 17:30:35,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:30:35,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:30:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:36,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:30:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:36,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:30:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:36,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:30:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:36,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:30:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:36,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:30:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:36,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-20 17:30:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:30:36,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:30:36,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:30:36,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524580596] [2022-03-20 17:30:36,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524580596] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:36,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:30:36,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 17:30:36,271 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:30:36,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1985232115] [2022-03-20 17:30:36,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1985232115] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:30:36,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:30:36,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 17:30:36,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503757052] [2022-03-20 17:30:36,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:30:36,272 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 17:30:36,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:30:36,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 17:30:36,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-03-20 17:30:36,272 INFO L87 Difference]: Start difference. First operand 5887 states and 8446 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) [2022-03-20 17:30:43,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:30:45,164 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:30:48,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:30:50,171 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:30:53,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:30:55,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:30:57,361 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:30:59,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:31:01,399 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:31:03,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:31:05,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:31:07,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:31:21,434 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:31:23,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:31:25,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:31:27,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:31:29,215 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:31:31,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:31:33,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:31:35,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:31:51,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:31:51,663 INFO L93 Difference]: Finished difference Result 6615 states and 9553 transitions. [2022-03-20 17:31:51,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 17:31:51,663 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 [2022-03-20 17:31:51,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:31:51,680 INFO L225 Difference]: With dead ends: 6615 [2022-03-20 17:31:51,680 INFO L226 Difference]: Without dead ends: 6580 [2022-03-20 17:31:51,682 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-03-20 17:31:51,682 INFO L913 BasicCegarLoop]: 2123 mSDtfsCounter, 5777 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 20163 mSolverCounterSat, 3768 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5986 SdHoareTripleChecker+Valid, 4042 SdHoareTripleChecker+Invalid, 23948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3768 IncrementalHoareTripleChecker+Valid, 20163 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.8s IncrementalHoareTripleChecker+Time [2022-03-20 17:31:51,683 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5986 Valid, 4042 Invalid, 23948 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3768 Valid, 20163 Invalid, 17 Unknown, 0 Unchecked, 72.8s Time] [2022-03-20 17:31:51,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6580 states. [2022-03-20 17:31:53,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6580 to 5865. [2022-03-20 17:31:53,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5865 states, 3911 states have (on average 1.353362311429302) internal successors, (5293), 4023 states have internal predecessors, (5293), 1558 states have call successors, (1558), 384 states have call predecessors, (1558), 395 states have return successors, (1570), 1522 states have call predecessors, (1570), 1549 states have call successors, (1570) [2022-03-20 17:31:53,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5865 states to 5865 states and 8421 transitions. [2022-03-20 17:31:53,292 INFO L78 Accepts]: Start accepts. Automaton has 5865 states and 8421 transitions. Word has length 69 [2022-03-20 17:31:53,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:31:53,292 INFO L478 AbstractCegarLoop]: Abstraction has 5865 states and 8421 transitions. [2022-03-20 17:31:53,292 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) [2022-03-20 17:31:53,292 INFO L276 IsEmpty]: Start isEmpty. Operand 5865 states and 8421 transitions. [2022-03-20 17:31:53,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-20 17:31:53,294 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:31:53,294 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] [2022-03-20 17:31:53,294 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-20 17:31:53,294 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:31:53,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:31:53,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1578229099, now seen corresponding path program 1 times [2022-03-20 17:31:53,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:31:53,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1900263218] [2022-03-20 17:31:53,297 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:31:53,297 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:31:53,297 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:31:53,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1578229099, now seen corresponding path program 2 times [2022-03-20 17:31:53,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:31:53,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073456134] [2022-03-20 17:31:53,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:31:53,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:31:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:53,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:31:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:53,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:31:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:53,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:31:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:53,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:31:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:53,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:31:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:53,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-20 17:31:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:53,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-20 17:31:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:53,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-20 17:31:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:53,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:31:53,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:31:53,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073456134] [2022-03-20 17:31:53,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073456134] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:31:53,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385579300] [2022-03-20 17:31:53,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:31:53,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:31:53,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:31:53,675 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) [2022-03-20 17:31:53,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-20 17:31:55,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:31:55,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:31:55,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-20 17:31:55,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:31:55,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:31:55,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:31:55,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385579300] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:31:55,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:31:55,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-03-20 17:31:55,134 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:31:55,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1900263218] [2022-03-20 17:31:55,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1900263218] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:31:55,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:31:55,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:31:55,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716523322] [2022-03-20 17:31:55,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:31:55,135 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:31:55,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:31:55,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:31:55,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:31:55,137 INFO L87 Difference]: Start difference. First operand 5865 states and 8421 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) [2022-03-20 17:31:56,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:31:56,873 INFO L93 Difference]: Finished difference Result 8384 states and 12094 transitions. [2022-03-20 17:31:56,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:31:56,874 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 [2022-03-20 17:31:56,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:31:56,890 INFO L225 Difference]: With dead ends: 8384 [2022-03-20 17:31:56,891 INFO L226 Difference]: Without dead ends: 5845 [2022-03-20 17:31:56,900 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 [2022-03-20 17:31:56,900 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:31:56,901 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 5334 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 17:31:56,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5845 states. [2022-03-20 17:31:58,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5845 to 5845. [2022-03-20 17:31:58,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5845 states, 3899 states have (on average 1.3531674788407284) internal successors, (5276), 4009 states have internal predecessors, (5276), 1554 states have call successors, (1554), 382 states have call predecessors, (1554), 391 states have return successors, (1566), 1518 states have call predecessors, (1566), 1547 states have call successors, (1566) [2022-03-20 17:31:58,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5845 states to 5845 states and 8396 transitions. [2022-03-20 17:31:58,529 INFO L78 Accepts]: Start accepts. Automaton has 5845 states and 8396 transitions. Word has length 76 [2022-03-20 17:31:58,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:31:58,529 INFO L478 AbstractCegarLoop]: Abstraction has 5845 states and 8396 transitions. [2022-03-20 17:31:58,529 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) [2022-03-20 17:31:58,530 INFO L276 IsEmpty]: Start isEmpty. Operand 5845 states and 8396 transitions. [2022-03-20 17:31:58,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-20 17:31:58,532 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:31:58,532 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] [2022-03-20 17:31:58,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-20 17:31:58,755 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 [2022-03-20 17:31:58,755 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:31:58,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:31:58,756 INFO L85 PathProgramCache]: Analyzing trace with hash -902471083, now seen corresponding path program 1 times [2022-03-20 17:31:58,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:31:58,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1208256156] [2022-03-20 17:31:58,758 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:31:58,758 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:31:58,758 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:31:58,759 INFO L85 PathProgramCache]: Analyzing trace with hash -902471083, now seen corresponding path program 2 times [2022-03-20 17:31:58,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:31:58,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479444682] [2022-03-20 17:31:58,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:31:58,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:31:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:59,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:31:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:59,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:31:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:59,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:31:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:59,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 17:31:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:59,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:31:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:59,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:31:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:59,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:31:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:59,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 17:31:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:59,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:31:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:59,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-20 17:31:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:59,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:31:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:31:59,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:31:59,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:31:59,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479444682] [2022-03-20 17:31:59,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479444682] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:31:59,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440781816] [2022-03-20 17:31:59,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:31:59,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:31:59,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:31:59,260 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) [2022-03-20 17:31:59,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-20 17:32:00,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:32:00,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:32:00,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-20 17:32:00,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:32:00,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:32:00,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:32:00,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440781816] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:00,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:32:00,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-03-20 17:32:00,745 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:32:00,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1208256156] [2022-03-20 17:32:00,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1208256156] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:00,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:32:00,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:32:00,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453038071] [2022-03-20 17:32:00,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:32:00,746 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 17:32:00,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:00,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 17:32:00,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-03-20 17:32:00,746 INFO L87 Difference]: Start difference. First operand 5845 states and 8396 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) [2022-03-20 17:32:02,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:32:02,464 INFO L93 Difference]: Finished difference Result 5860 states and 8413 transitions. [2022-03-20 17:32:02,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 17:32:02,465 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 [2022-03-20 17:32:02,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:32:02,479 INFO L225 Difference]: With dead ends: 5860 [2022-03-20 17:32:02,479 INFO L226 Difference]: Without dead ends: 5827 [2022-03-20 17:32:02,481 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-03-20 17:32:02,481 INFO L913 BasicCegarLoop]: 2677 mSDtfsCounter, 8 mSDsluCounter, 24066 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26743 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:32:02,482 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26743 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:32:02,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5827 states. [2022-03-20 17:32:04,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5827 to 5827. [2022-03-20 17:32:04,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5827 states, 3888 states have (on average 1.353909465020576) internal successors, (5264), 3998 states have internal predecessors, (5264), 1549 states have call successors, (1549), 380 states have call predecessors, (1549), 389 states have return successors, (1561), 1513 states have call predecessors, (1561), 1542 states have call successors, (1561) [2022-03-20 17:32:04,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5827 states to 5827 states and 8374 transitions. [2022-03-20 17:32:04,025 INFO L78 Accepts]: Start accepts. Automaton has 5827 states and 8374 transitions. Word has length 78 [2022-03-20 17:32:04,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:32:04,025 INFO L478 AbstractCegarLoop]: Abstraction has 5827 states and 8374 transitions. [2022-03-20 17:32:04,025 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) [2022-03-20 17:32:04,025 INFO L276 IsEmpty]: Start isEmpty. Operand 5827 states and 8374 transitions. [2022-03-20 17:32:04,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-03-20 17:32:04,027 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:32:04,028 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] [2022-03-20 17:32:04,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-20 17:32:04,243 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 [2022-03-20 17:32:04,243 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:32:04,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:32:04,244 INFO L85 PathProgramCache]: Analyzing trace with hash -687831844, now seen corresponding path program 1 times [2022-03-20 17:32:04,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:04,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [702328519] [2022-03-20 17:32:04,246 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:32:04,246 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:32:04,246 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:32:04,246 INFO L85 PathProgramCache]: Analyzing trace with hash -687831844, now seen corresponding path program 2 times [2022-03-20 17:32:04,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:32:04,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110989924] [2022-03-20 17:32:04,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:32:04,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:32:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:04,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:32:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:04,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:32:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:04,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:32:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:04,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:32:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:04,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:32:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:04,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:04,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:32:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:04,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:04,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-20 17:32:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:04,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:04,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:32:04,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:32:04,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110989924] [2022-03-20 17:32:04,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110989924] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:32:04,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364396970] [2022-03-20 17:32:04,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:32:04,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:32:04,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:32:04,615 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) [2022-03-20 17:32:04,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-20 17:32:06,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:32:06,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:32:06,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 17:32:06,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:32:06,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:32:06,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:32:06,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364396970] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:06,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:32:06,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-20 17:32:06,191 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:32:06,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [702328519] [2022-03-20 17:32:06,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [702328519] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:06,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:32:06,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:32:06,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984526362] [2022-03-20 17:32:06,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:32:06,191 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 17:32:06,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:06,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 17:32:06,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:32:06,192 INFO L87 Difference]: Start difference. First operand 5827 states and 8374 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) [2022-03-20 17:32:08,480 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:32:10,514 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:32:12,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:32:12,219 INFO L93 Difference]: Finished difference Result 5849 states and 8400 transitions. [2022-03-20 17:32:12,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 17:32:12,220 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 [2022-03-20 17:32:12,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:32:12,232 INFO L225 Difference]: With dead ends: 5849 [2022-03-20 17:32:12,233 INFO L226 Difference]: Without dead ends: 5827 [2022-03-20 17:32:12,234 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 [2022-03-20 17:32:12,235 INFO L913 BasicCegarLoop]: 2679 mSDtfsCounter, 5 mSDsluCounter, 10649 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 13328 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-03-20 17:32:12,235 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 13328 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2022-03-20 17:32:12,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5827 states. [2022-03-20 17:32:13,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5827 to 5827. [2022-03-20 17:32:13,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5827 states, 3888 states have (on average 1.3531378600823045) internal successors, (5261), 3998 states have internal predecessors, (5261), 1549 states have call successors, (1549), 380 states have call predecessors, (1549), 389 states have return successors, (1561), 1513 states have call predecessors, (1561), 1542 states have call successors, (1561) [2022-03-20 17:32:13,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5827 states to 5827 states and 8371 transitions. [2022-03-20 17:32:13,832 INFO L78 Accepts]: Start accepts. Automaton has 5827 states and 8371 transitions. Word has length 87 [2022-03-20 17:32:13,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:32:13,832 INFO L478 AbstractCegarLoop]: Abstraction has 5827 states and 8371 transitions. [2022-03-20 17:32:13,833 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) [2022-03-20 17:32:13,833 INFO L276 IsEmpty]: Start isEmpty. Operand 5827 states and 8371 transitions. [2022-03-20 17:32:13,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-20 17:32:13,835 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:32:13,835 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] [2022-03-20 17:32:13,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-03-20 17:32:14,048 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 [2022-03-20 17:32:14,049 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:32:14,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:32:14,049 INFO L85 PathProgramCache]: Analyzing trace with hash -363355348, now seen corresponding path program 1 times [2022-03-20 17:32:14,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:14,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [920373035] [2022-03-20 17:32:14,051 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:32:14,051 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:32:14,051 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:32:14,052 INFO L85 PathProgramCache]: Analyzing trace with hash -363355348, now seen corresponding path program 2 times [2022-03-20 17:32:14,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:32:14,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125108336] [2022-03-20 17:32:14,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:32:14,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:32:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:14,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:32:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:14,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:32:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:14,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:32:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:14,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:32:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:14,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:32:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:14,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:14,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-20 17:32:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:14,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-20 17:32:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:14,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-20 17:32:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:14,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:32:14,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:32:14,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125108336] [2022-03-20 17:32:14,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125108336] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:32:14,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037689622] [2022-03-20 17:32:14,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:32:14,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:32:14,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:32:14,426 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) [2022-03-20 17:32:14,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-20 17:32:15,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:32:15,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:32:15,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 2221 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-20 17:32:15,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:32:15,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:32:15,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:32:15,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037689622] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:15,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:32:15,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-03-20 17:32:15,770 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:32:15,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [920373035] [2022-03-20 17:32:15,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [920373035] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:15,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:32:15,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:32:15,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561805401] [2022-03-20 17:32:15,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:32:15,771 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:32:15,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:15,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:32:15,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-20 17:32:15,771 INFO L87 Difference]: Start difference. First operand 5827 states and 8371 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) [2022-03-20 17:32:17,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:32:17,003 INFO L93 Difference]: Finished difference Result 6752 states and 9658 transitions. [2022-03-20 17:32:17,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:32:17,004 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 [2022-03-20 17:32:17,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:32:17,015 INFO L225 Difference]: With dead ends: 6752 [2022-03-20 17:32:17,015 INFO L226 Difference]: Without dead ends: 4202 [2022-03-20 17:32:17,024 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 [2022-03-20 17:32:17,024 INFO L913 BasicCegarLoop]: 3775 mSDtfsCounter, 1983 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 5562 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:32:17,025 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1983 Valid, 5562 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:32:17,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4202 states. [2022-03-20 17:32:18,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4202 to 4084. [2022-03-20 17:32:18,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4084 states, 2708 states have (on average 1.3382570162481535) internal successors, (3624), 2781 states have internal predecessors, (3624), 1089 states have call successors, (1089), 279 states have call predecessors, (1089), 286 states have return successors, (1095), 1068 states have call predecessors, (1095), 1082 states have call successors, (1095) [2022-03-20 17:32:18,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4084 states to 4084 states and 5808 transitions. [2022-03-20 17:32:18,190 INFO L78 Accepts]: Start accepts. Automaton has 4084 states and 5808 transitions. Word has length 85 [2022-03-20 17:32:18,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:32:18,190 INFO L478 AbstractCegarLoop]: Abstraction has 4084 states and 5808 transitions. [2022-03-20 17:32:18,190 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) [2022-03-20 17:32:18,190 INFO L276 IsEmpty]: Start isEmpty. Operand 4084 states and 5808 transitions. [2022-03-20 17:32:18,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-20 17:32:18,192 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:32:18,192 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] [2022-03-20 17:32:18,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-03-20 17:32:18,403 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 [2022-03-20 17:32:18,403 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:32:18,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:32:18,404 INFO L85 PathProgramCache]: Analyzing trace with hash 889808946, now seen corresponding path program 1 times [2022-03-20 17:32:18,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:18,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [934748806] [2022-03-20 17:32:18,406 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:32:18,406 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:32:18,406 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:32:18,406 INFO L85 PathProgramCache]: Analyzing trace with hash 889808946, now seen corresponding path program 2 times [2022-03-20 17:32:18,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:32:18,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709499486] [2022-03-20 17:32:18,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:32:18,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:32:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:18,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:32:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:18,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:32:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:18,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:32:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:18,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:32:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:18,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:32:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:18,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:18,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-20 17:32:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:18,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:18,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-20 17:32:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:18,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:32:18,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:32:18,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709499486] [2022-03-20 17:32:18,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709499486] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:32:18,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747383398] [2022-03-20 17:32:18,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:32:18,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:32:18,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:32:18,826 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) [2022-03-20 17:32:18,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-20 17:32:20,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:32:20,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:32:20,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 17:32:20,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:32:20,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:32:20,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:32:20,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747383398] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:20,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:32:20,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-20 17:32:20,441 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:32:20,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [934748806] [2022-03-20 17:32:20,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [934748806] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:20,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:32:20,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:32:20,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964787716] [2022-03-20 17:32:20,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:32:20,441 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 17:32:20,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:20,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 17:32:20,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:32:20,442 INFO L87 Difference]: Start difference. First operand 4084 states and 5808 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) [2022-03-20 17:32:22,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:32:22,025 INFO L93 Difference]: Finished difference Result 4113 states and 5843 transitions. [2022-03-20 17:32:22,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 17:32:22,026 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 [2022-03-20 17:32:22,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:32:22,036 INFO L225 Difference]: With dead ends: 4113 [2022-03-20 17:32:22,036 INFO L226 Difference]: Without dead ends: 3669 [2022-03-20 17:32:22,039 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-03-20 17:32:22,039 INFO L913 BasicCegarLoop]: 2675 mSDtfsCounter, 17 mSDsluCounter, 10632 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 13307 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:32:22,039 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 13307 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 17:32:22,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3669 states. [2022-03-20 17:32:23,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3669 to 3642. [2022-03-20 17:32:23,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 2440 states have (on average 1.3368852459016394) internal successors, (3262), 2508 states have internal predecessors, (3262), 934 states have call successors, (934), 261 states have call predecessors, (934), 267 states have return successors, (939), 914 states have call predecessors, (939), 927 states have call successors, (939) [2022-03-20 17:32:23,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 5135 transitions. [2022-03-20 17:32:23,184 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 5135 transitions. Word has length 88 [2022-03-20 17:32:23,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:32:23,185 INFO L478 AbstractCegarLoop]: Abstraction has 3642 states and 5135 transitions. [2022-03-20 17:32:23,185 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) [2022-03-20 17:32:23,185 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 5135 transitions. [2022-03-20 17:32:23,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-03-20 17:32:23,186 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:32:23,187 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] [2022-03-20 17:32:23,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-20 17:32:23,411 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 [2022-03-20 17:32:23,411 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:32:23,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:32:23,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1084992937, now seen corresponding path program 1 times [2022-03-20 17:32:23,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:23,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1328067296] [2022-03-20 17:32:23,414 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:32:23,414 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:32:23,414 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:32:23,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1084992937, now seen corresponding path program 2 times [2022-03-20 17:32:23,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:32:23,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794981132] [2022-03-20 17:32:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:32:23,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:32:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:23,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:32:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:23,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:32:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:23,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:32:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:23,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:32:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:23,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:32:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:23,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:23,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 17:32:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:23,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:32:23,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:32:23,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794981132] [2022-03-20 17:32:23,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794981132] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:32:23,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254829168] [2022-03-20 17:32:23,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:32:23,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:32:23,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:32:23,783 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) [2022-03-20 17:32:23,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-20 17:32:25,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:32:25,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:32:25,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 17:32:25,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:32:25,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:32:25,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:32:25,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254829168] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:25,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:32:25,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-20 17:32:25,401 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:32:25,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1328067296] [2022-03-20 17:32:25,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1328067296] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:25,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:32:25,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:32:25,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233871526] [2022-03-20 17:32:25,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:32:25,401 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 17:32:25,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:25,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 17:32:25,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:32:25,402 INFO L87 Difference]: Start difference. First operand 3642 states and 5135 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) [2022-03-20 17:32:26,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:32:26,535 INFO L93 Difference]: Finished difference Result 3701 states and 5205 transitions. [2022-03-20 17:32:26,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 17:32:26,535 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 [2022-03-20 17:32:26,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:32:26,544 INFO L225 Difference]: With dead ends: 3701 [2022-03-20 17:32:26,545 INFO L226 Difference]: Without dead ends: 3654 [2022-03-20 17:32:26,546 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 [2022-03-20 17:32:26,547 INFO L913 BasicCegarLoop]: 2509 mSDtfsCounter, 5 mSDsluCounter, 10011 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 12520 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:32:26,547 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 12520 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:32:26,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2022-03-20 17:32:27,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 3647. [2022-03-20 17:32:27,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3647 states, 2444 states have (on average 1.3363338788870704) internal successors, (3266), 2512 states have internal predecessors, (3266), 934 states have call successors, (934), 261 states have call predecessors, (934), 268 states have return successors, (940), 915 states have call predecessors, (940), 927 states have call successors, (940) [2022-03-20 17:32:27,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3647 states to 3647 states and 5140 transitions. [2022-03-20 17:32:27,614 INFO L78 Accepts]: Start accepts. Automaton has 3647 states and 5140 transitions. Word has length 82 [2022-03-20 17:32:27,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:32:27,614 INFO L478 AbstractCegarLoop]: Abstraction has 3647 states and 5140 transitions. [2022-03-20 17:32:27,614 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) [2022-03-20 17:32:27,614 INFO L276 IsEmpty]: Start isEmpty. Operand 3647 states and 5140 transitions. [2022-03-20 17:32:27,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-20 17:32:27,616 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:32:27,616 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] [2022-03-20 17:32:27,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-20 17:32:27,831 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 [2022-03-20 17:32:27,832 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:32:27,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:32:27,832 INFO L85 PathProgramCache]: Analyzing trace with hash -10828563, now seen corresponding path program 1 times [2022-03-20 17:32:27,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:27,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [324820306] [2022-03-20 17:32:27,835 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:32:27,835 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:32:27,835 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:32:27,835 INFO L85 PathProgramCache]: Analyzing trace with hash -10828563, now seen corresponding path program 2 times [2022-03-20 17:32:27,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:32:27,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363477936] [2022-03-20 17:32:27,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:32:27,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:32:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:28,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:32:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:28,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:32:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:28,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:32:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:28,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:32:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:28,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:32:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:28,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:28,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:32:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:28,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:32:28,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:32:28,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363477936] [2022-03-20 17:32:28,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363477936] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:32:28,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064709590] [2022-03-20 17:32:28,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:32:28,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:32:28,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:32:28,195 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) [2022-03-20 17:32:28,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-20 17:32:29,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:32:29,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:32:29,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 1753 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 17:32:29,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:32:29,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:32:29,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:32:29,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064709590] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:29,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:32:29,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-20 17:32:29,795 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:32:29,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [324820306] [2022-03-20 17:32:29,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [324820306] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:29,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:32:29,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:32:29,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122960777] [2022-03-20 17:32:29,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:32:29,796 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 17:32:29,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:29,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 17:32:29,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:32:29,796 INFO L87 Difference]: Start difference. First operand 3647 states and 5140 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) [2022-03-20 17:32:30,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:32:30,932 INFO L93 Difference]: Finished difference Result 3761 states and 5273 transitions. [2022-03-20 17:32:30,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 17:32:30,932 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 [2022-03-20 17:32:30,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:32:30,941 INFO L225 Difference]: With dead ends: 3761 [2022-03-20 17:32:30,941 INFO L226 Difference]: Without dead ends: 3658 [2022-03-20 17:32:30,942 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 [2022-03-20 17:32:30,943 INFO L913 BasicCegarLoop]: 2511 mSDtfsCounter, 21 mSDsluCounter, 10003 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 12514 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:32:30,943 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 12514 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:32:30,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3658 states. [2022-03-20 17:32:32,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3658 to 3652. [2022-03-20 17:32:32,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3652 states, 2448 states have (on average 1.3357843137254901) internal successors, (3270), 2516 states have internal predecessors, (3270), 934 states have call successors, (934), 261 states have call predecessors, (934), 269 states have return successors, (941), 916 states have call predecessors, (941), 927 states have call successors, (941) [2022-03-20 17:32:32,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 5145 transitions. [2022-03-20 17:32:32,013 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 5145 transitions. Word has length 85 [2022-03-20 17:32:32,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:32:32,015 INFO L478 AbstractCegarLoop]: Abstraction has 3652 states and 5145 transitions. [2022-03-20 17:32:32,015 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) [2022-03-20 17:32:32,015 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 5145 transitions. [2022-03-20 17:32:32,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-20 17:32:32,017 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:32:32,017 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] [2022-03-20 17:32:32,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-20 17:32:32,223 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 [2022-03-20 17:32:32,223 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:32:32,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:32:32,223 INFO L85 PathProgramCache]: Analyzing trace with hash -762410768, now seen corresponding path program 1 times [2022-03-20 17:32:32,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:32,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1852457651] [2022-03-20 17:32:32,226 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:32:32,226 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:32:32,226 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:32:32,226 INFO L85 PathProgramCache]: Analyzing trace with hash -762410768, now seen corresponding path program 2 times [2022-03-20 17:32:32,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:32:32,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310038325] [2022-03-20 17:32:32,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:32:32,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:32:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:32,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:32:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:32,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:32:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:32,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:32:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:32,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:32:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:32,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:32,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:32,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:32:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:32,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 17:32:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:32,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 17:32:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:32,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:32,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-20 17:32:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:32,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:32:32,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:32:32,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310038325] [2022-03-20 17:32:32,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310038325] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:32:32,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149041573] [2022-03-20 17:32:32,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:32:32,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:32:32,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:32:32,618 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) [2022-03-20 17:32:32,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-20 17:32:34,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:32:34,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:32:34,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-20 17:32:34,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:32:34,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:32:34,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:32:34,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149041573] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:34,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:32:34,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-03-20 17:32:34,234 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:32:34,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1852457651] [2022-03-20 17:32:34,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1852457651] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:34,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:32:34,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:32:34,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565755042] [2022-03-20 17:32:34,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:32:34,235 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:32:34,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:34,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:32:34,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-03-20 17:32:34,236 INFO L87 Difference]: Start difference. First operand 3652 states and 5145 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) [2022-03-20 17:32:35,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:32:35,295 INFO L93 Difference]: Finished difference Result 3714 states and 5215 transitions. [2022-03-20 17:32:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:32:35,296 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 [2022-03-20 17:32:35,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:32:35,304 INFO L225 Difference]: With dead ends: 3714 [2022-03-20 17:32:35,304 INFO L226 Difference]: Without dead ends: 3657 [2022-03-20 17:32:35,306 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 [2022-03-20 17:32:35,306 INFO L913 BasicCegarLoop]: 2509 mSDtfsCounter, 37 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 4967 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 [2022-03-20 17:32:35,306 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 4967 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:32:35,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3657 states. [2022-03-20 17:32:36,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3657 to 3657. [2022-03-20 17:32:36,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3657 states, 2451 states have (on average 1.3353733170134638) internal successors, (3273), 2519 states have internal predecessors, (3273), 936 states have call successors, (936), 261 states have call predecessors, (936), 269 states have return successors, (943), 918 states have call predecessors, (943), 929 states have call successors, (943) [2022-03-20 17:32:36,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3657 states to 3657 states and 5152 transitions. [2022-03-20 17:32:36,396 INFO L78 Accepts]: Start accepts. Automaton has 3657 states and 5152 transitions. Word has length 88 [2022-03-20 17:32:36,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:32:36,397 INFO L478 AbstractCegarLoop]: Abstraction has 3657 states and 5152 transitions. [2022-03-20 17:32:36,397 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) [2022-03-20 17:32:36,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3657 states and 5152 transitions. [2022-03-20 17:32:36,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-20 17:32:36,399 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:32:36,399 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] [2022-03-20 17:32:36,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-03-20 17:32:36,615 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 [2022-03-20 17:32:36,615 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:32:36,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:32:36,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1395598084, now seen corresponding path program 1 times [2022-03-20 17:32:36,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:36,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1054923235] [2022-03-20 17:32:36,618 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:32:36,618 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:32:36,618 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:32:36,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1395598084, now seen corresponding path program 2 times [2022-03-20 17:32:36,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:32:36,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388977328] [2022-03-20 17:32:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:32:36,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:32:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:36,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:32:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:36,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:32:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:36,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:32:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:36,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:32:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:37,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:37,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:37,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 17:32:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:37,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 17:32:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:37,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-20 17:32:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:37,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:37,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-20 17:32:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:37,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:37,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:32:37,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:32:37,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388977328] [2022-03-20 17:32:37,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388977328] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:32:37,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048154554] [2022-03-20 17:32:37,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:32:37,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:32:37,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:32:37,081 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) [2022-03-20 17:32:37,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-20 17:32:38,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:32:38,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:32:38,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 1752 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 17:32:38,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:32:38,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:32:38,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:32:38,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048154554] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:38,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:32:38,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-20 17:32:38,751 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:32:38,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1054923235] [2022-03-20 17:32:38,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1054923235] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:38,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:32:38,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:32:38,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834110628] [2022-03-20 17:32:38,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:32:38,758 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 17:32:38,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:38,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 17:32:38,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:32:38,758 INFO L87 Difference]: Start difference. First operand 3657 states and 5152 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) [2022-03-20 17:32:40,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:32:40,006 INFO L93 Difference]: Finished difference Result 3870 states and 5408 transitions. [2022-03-20 17:32:40,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 17:32:40,006 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 [2022-03-20 17:32:40,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:32:40,015 INFO L225 Difference]: With dead ends: 3870 [2022-03-20 17:32:40,015 INFO L226 Difference]: Without dead ends: 3645 [2022-03-20 17:32:40,017 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 [2022-03-20 17:32:40,017 INFO L913 BasicCegarLoop]: 2511 mSDtfsCounter, 5 mSDsluCounter, 10023 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 12534 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:32:40,017 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 12534 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 17:32:40,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3645 states. [2022-03-20 17:32:41,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3645 to 3645. [2022-03-20 17:32:41,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3645 states, 2444 states have (on average 1.3355155482815058) internal successors, (3264), 2512 states have internal predecessors, (3264), 932 states have call successors, (932), 261 states have call predecessors, (932), 268 states have return successors, (938), 913 states have call predecessors, (938), 925 states have call successors, (938) [2022-03-20 17:32:41,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 5134 transitions. [2022-03-20 17:32:41,053 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 5134 transitions. Word has length 89 [2022-03-20 17:32:41,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:32:41,053 INFO L478 AbstractCegarLoop]: Abstraction has 3645 states and 5134 transitions. [2022-03-20 17:32:41,053 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) [2022-03-20 17:32:41,053 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 5134 transitions. [2022-03-20 17:32:41,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-20 17:32:41,055 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:32:41,055 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] [2022-03-20 17:32:41,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-20 17:32:41,278 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 [2022-03-20 17:32:41,278 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:32:41,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:32:41,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1359885864, now seen corresponding path program 1 times [2022-03-20 17:32:41,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:41,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [873180606] [2022-03-20 17:32:41,281 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:32:41,281 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:32:41,281 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:32:41,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1359885864, now seen corresponding path program 2 times [2022-03-20 17:32:41,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:32:41,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941203440] [2022-03-20 17:32:41,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:32:41,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:32:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:41,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:32:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:41,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:32:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:41,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:32:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:41,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:32:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:41,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:32:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:41,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:41,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:32:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:41,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:32:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:41,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:41,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:32:41,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:32:41,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941203440] [2022-03-20 17:32:41,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941203440] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:32:41,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043307452] [2022-03-20 17:32:41,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:32:41,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:32:41,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:32:41,675 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) [2022-03-20 17:32:41,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-20 17:32:43,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:32:43,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:32:43,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-20 17:32:43,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:32:43,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:32:43,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:32:43,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043307452] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:43,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:32:43,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-03-20 17:32:43,331 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:32:43,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [873180606] [2022-03-20 17:32:43,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [873180606] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:43,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:32:43,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:32:43,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369229781] [2022-03-20 17:32:43,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:32:43,332 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:32:43,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:43,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:32:43,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-20 17:32:43,332 INFO L87 Difference]: Start difference. First operand 3645 states and 5134 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) [2022-03-20 17:32:44,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:32:44,399 INFO L93 Difference]: Finished difference Result 3700 states and 5197 transitions. [2022-03-20 17:32:44,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:32:44,399 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 [2022-03-20 17:32:44,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:32:44,409 INFO L225 Difference]: With dead ends: 3700 [2022-03-20 17:32:44,409 INFO L226 Difference]: Without dead ends: 3647 [2022-03-20 17:32:44,411 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 [2022-03-20 17:32:44,412 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 [2022-03-20 17:32:44,412 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] [2022-03-20 17:32:44,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3647 states. [2022-03-20 17:32:45,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3647 to 3644. [2022-03-20 17:32:45,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 2443 states have (on average 1.3340155546459271) internal successors, (3259), 2511 states have internal predecessors, (3259), 932 states have call successors, (932), 261 states have call predecessors, (932), 268 states have return successors, (938), 913 states have call predecessors, (938), 925 states have call successors, (938) [2022-03-20 17:32:45,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 5129 transitions. [2022-03-20 17:32:45,474 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 5129 transitions. Word has length 88 [2022-03-20 17:32:45,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:32:45,474 INFO L478 AbstractCegarLoop]: Abstraction has 3644 states and 5129 transitions. [2022-03-20 17:32:45,475 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) [2022-03-20 17:32:45,475 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 5129 transitions. [2022-03-20 17:32:45,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-03-20 17:32:45,476 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:32:45,477 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] [2022-03-20 17:32:45,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-03-20 17:32:45,699 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 [2022-03-20 17:32:45,699 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:32:45,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:32:45,700 INFO L85 PathProgramCache]: Analyzing trace with hash -2048182127, now seen corresponding path program 1 times [2022-03-20 17:32:45,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:45,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [695538006] [2022-03-20 17:32:45,702 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:32:45,702 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:32:45,702 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:32:45,702 INFO L85 PathProgramCache]: Analyzing trace with hash -2048182127, now seen corresponding path program 2 times [2022-03-20 17:32:45,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:32:45,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034617146] [2022-03-20 17:32:45,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:32:45,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:32:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:45,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:32:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:45,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:32:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:45,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:32:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:45,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:32:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:46,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:32:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:46,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:46,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 17:32:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:46,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:32:46,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:32:46,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034617146] [2022-03-20 17:32:46,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034617146] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:32:46,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066925119] [2022-03-20 17:32:46,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:32:46,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:32:46,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:32:46,058 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) [2022-03-20 17:32:46,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-20 17:32:47,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:32:47,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:32:47,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 17:32:47,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:32:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:32:47,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:32:47,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066925119] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:47,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:32:47,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-20 17:32:47,817 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:32:47,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [695538006] [2022-03-20 17:32:47,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [695538006] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:47,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:32:47,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:32:47,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688122285] [2022-03-20 17:32:47,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:32:47,817 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 17:32:47,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:47,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 17:32:47,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:32:47,818 INFO L87 Difference]: Start difference. First operand 3644 states and 5129 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) [2022-03-20 17:32:48,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:32:48,907 INFO L93 Difference]: Finished difference Result 3703 states and 5200 transitions. [2022-03-20 17:32:48,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 17:32:48,908 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 [2022-03-20 17:32:48,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:32:48,918 INFO L225 Difference]: With dead ends: 3703 [2022-03-20 17:32:48,919 INFO L226 Difference]: Without dead ends: 3656 [2022-03-20 17:32:48,921 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-20 17:32:48,921 INFO L913 BasicCegarLoop]: 2502 mSDtfsCounter, 16 mSDsluCounter, 9966 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 12468 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:32:48,921 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 12468 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:32:48,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3656 states. [2022-03-20 17:32:49,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3656 to 3645. [2022-03-20 17:32:49,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3645 states, 2444 states have (on average 1.3342880523731588) internal successors, (3261), 2512 states have internal predecessors, (3261), 932 states have call successors, (932), 261 states have call predecessors, (932), 268 states have return successors, (938), 913 states have call predecessors, (938), 925 states have call successors, (938) [2022-03-20 17:32:49,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 5131 transitions. [2022-03-20 17:32:49,981 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 5131 transitions. Word has length 87 [2022-03-20 17:32:49,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:32:49,982 INFO L478 AbstractCegarLoop]: Abstraction has 3645 states and 5131 transitions. [2022-03-20 17:32:49,982 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) [2022-03-20 17:32:49,982 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 5131 transitions. [2022-03-20 17:32:49,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-20 17:32:49,984 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:32:49,984 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:32:50,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-03-20 17:32:50,201 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 [2022-03-20 17:32:50,201 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:32:50,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:32:50,202 INFO L85 PathProgramCache]: Analyzing trace with hash -554188091, now seen corresponding path program 1 times [2022-03-20 17:32:50,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:50,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1106421149] [2022-03-20 17:32:50,204 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:32:50,204 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:32:50,204 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:32:50,204 INFO L85 PathProgramCache]: Analyzing trace with hash -554188091, now seen corresponding path program 2 times [2022-03-20 17:32:50,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:32:50,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553843420] [2022-03-20 17:32:50,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:32:50,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:32:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:50,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:32:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:50,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:32:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:50,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:32:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:50,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:32:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:50,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:50,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:50,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:32:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:50,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 17:32:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:50,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-20 17:32:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:50,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-20 17:32:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:50,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:50,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:32:50,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:32:50,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553843420] [2022-03-20 17:32:50,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553843420] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:32:50,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105308618] [2022-03-20 17:32:50,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:32:50,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:32:50,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:32:50,572 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) [2022-03-20 17:32:50,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-20 17:32:52,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:32:52,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:32:52,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-20 17:32:52,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:32:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:32:52,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:32:52,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105308618] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:52,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:32:52,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-03-20 17:32:52,616 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:32:52,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1106421149] [2022-03-20 17:32:52,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1106421149] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:32:52,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:32:52,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:32:52,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352853044] [2022-03-20 17:32:52,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:32:52,617 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:32:52,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:52,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:32:52,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-20 17:32:52,617 INFO L87 Difference]: Start difference. First operand 3645 states and 5131 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) [2022-03-20 17:32:56,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:32:56,679 INFO L93 Difference]: Finished difference Result 4881 states and 6941 transitions. [2022-03-20 17:32:56,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 17:32:56,679 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 [2022-03-20 17:32:56,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:32:56,690 INFO L225 Difference]: With dead ends: 4881 [2022-03-20 17:32:56,690 INFO L226 Difference]: Without dead ends: 4875 [2022-03-20 17:32:56,692 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 [2022-03-20 17:32:56,692 INFO L913 BasicCegarLoop]: 4271 mSDtfsCounter, 5470 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 1074 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5474 SdHoareTripleChecker+Valid, 5849 SdHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1074 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-20 17:32:56,692 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5474 Valid, 5849 Invalid, 2030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1074 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-20 17:32:56,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4875 states. [2022-03-20 17:32:58,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4875 to 3645. [2022-03-20 17:32:58,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3645 states, 2444 states have (on average 1.3338788870703764) internal successors, (3260), 2512 states have internal predecessors, (3260), 932 states have call successors, (932), 261 states have call predecessors, (932), 268 states have return successors, (938), 913 states have call predecessors, (938), 925 states have call successors, (938) [2022-03-20 17:32:58,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 5130 transitions. [2022-03-20 17:32:58,048 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 5130 transitions. Word has length 89 [2022-03-20 17:32:58,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:32:58,048 INFO L478 AbstractCegarLoop]: Abstraction has 3645 states and 5130 transitions. [2022-03-20 17:32:58,049 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) [2022-03-20 17:32:58,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 5130 transitions. [2022-03-20 17:32:58,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-20 17:32:58,050 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:32:58,051 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:32:58,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-03-20 17:32:58,275 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 [2022-03-20 17:32:58,275 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:32:58,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:32:58,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1738187805, now seen corresponding path program 1 times [2022-03-20 17:32:58,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:32:58,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [961031803] [2022-03-20 17:32:58,278 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:32:58,278 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:32:58,278 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:32:58,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1738187805, now seen corresponding path program 2 times [2022-03-20 17:32:58,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:32:58,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684401079] [2022-03-20 17:32:58,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:32:58,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:32:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:58,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:32:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:58,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:32:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:58,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:32:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:58,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:32:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:58,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:32:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:58,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:32:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:58,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 17:32:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:58,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:32:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:32:58,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:32:58,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:32:58,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684401079] [2022-03-20 17:32:58,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684401079] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:32:58,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003537127] [2022-03-20 17:32:58,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:32:58,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:32:58,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:32:58,658 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) [2022-03-20 17:32:58,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-20 17:33:00,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:33:00,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:33:00,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 1794 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-20 17:33:00,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:33:00,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:33:00,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:33:00,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003537127] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:00,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:33:00,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-03-20 17:33:00,400 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:00,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [961031803] [2022-03-20 17:33:00,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [961031803] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:00,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:00,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:33:00,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84360568] [2022-03-20 17:33:00,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:00,400 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:33:00,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:00,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:33:00,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-20 17:33:00,401 INFO L87 Difference]: Start difference. First operand 3645 states and 5130 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) [2022-03-20 17:33:01,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:01,603 INFO L93 Difference]: Finished difference Result 5056 states and 7141 transitions. [2022-03-20 17:33:01,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:33:01,604 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 [2022-03-20 17:33:01,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:01,613 INFO L225 Difference]: With dead ends: 5056 [2022-03-20 17:33:01,614 INFO L226 Difference]: Without dead ends: 3608 [2022-03-20 17:33:01,619 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 [2022-03-20 17:33:01,619 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 [2022-03-20 17:33:01,619 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] [2022-03-20 17:33:01,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3608 states. [2022-03-20 17:33:02,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3608 to 3608. [2022-03-20 17:33:02,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3608 states, 2424 states have (on average 1.3333333333333333) internal successors, (3232), 2492 states have internal predecessors, (3232), 918 states have call successors, (918), 258 states have call predecessors, (918), 265 states have return successors, (924), 899 states have call predecessors, (924), 911 states have call successors, (924) [2022-03-20 17:33:02,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3608 states to 3608 states and 5074 transitions. [2022-03-20 17:33:02,811 INFO L78 Accepts]: Start accepts. Automaton has 3608 states and 5074 transitions. Word has length 89 [2022-03-20 17:33:02,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:02,811 INFO L478 AbstractCegarLoop]: Abstraction has 3608 states and 5074 transitions. [2022-03-20 17:33:02,812 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) [2022-03-20 17:33:02,812 INFO L276 IsEmpty]: Start isEmpty. Operand 3608 states and 5074 transitions. [2022-03-20 17:33:02,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-03-20 17:33:02,813 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:02,813 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] [2022-03-20 17:33:02,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-03-20 17:33:03,027 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 [2022-03-20 17:33:03,028 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:03,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:03,028 INFO L85 PathProgramCache]: Analyzing trace with hash -899188565, now seen corresponding path program 1 times [2022-03-20 17:33:03,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:03,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [705272471] [2022-03-20 17:33:03,030 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:33:03,031 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:33:03,031 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:33:03,031 INFO L85 PathProgramCache]: Analyzing trace with hash -899188565, now seen corresponding path program 2 times [2022-03-20 17:33:03,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:03,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747954761] [2022-03-20 17:33:03,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:03,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:03,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:03,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:33:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:03,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:33:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:03,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:33:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:03,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:03,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:03,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:33:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:03,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 17:33:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:03,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-20 17:33:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:03,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-20 17:33:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:03,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:03,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:33:03,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:03,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747954761] [2022-03-20 17:33:03,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747954761] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:33:03,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399675988] [2022-03-20 17:33:03,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:33:03,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:33:03,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:33:03,409 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) [2022-03-20 17:33:03,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-20 17:33:05,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:33:05,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:33:05,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 1779 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-20 17:33:05,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:33:05,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:33:05,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:33:05,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399675988] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:05,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:33:05,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2022-03-20 17:33:05,279 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:05,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [705272471] [2022-03-20 17:33:05,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [705272471] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:05,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:05,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 17:33:05,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910468434] [2022-03-20 17:33:05,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:05,279 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 17:33:05,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:05,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 17:33:05,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-03-20 17:33:05,280 INFO L87 Difference]: Start difference. First operand 3608 states and 5074 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) [2022-03-20 17:33:06,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:06,738 INFO L93 Difference]: Finished difference Result 3700 states and 5180 transitions. [2022-03-20 17:33:06,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 17:33:06,738 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 [2022-03-20 17:33:06,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:06,747 INFO L225 Difference]: With dead ends: 3700 [2022-03-20 17:33:06,747 INFO L226 Difference]: Without dead ends: 3640 [2022-03-20 17:33:06,749 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 [2022-03-20 17:33:06,750 INFO L913 BasicCegarLoop]: 2465 mSDtfsCounter, 48 mSDsluCounter, 17193 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 19658 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:33:06,750 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 19658 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 17:33:06,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2022-03-20 17:33:07,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3629. [2022-03-20 17:33:07,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3629 states, 2441 states have (on average 1.3318312167144613) internal successors, (3251), 2510 states have internal predecessors, (3251), 920 states have call successors, (920), 258 states have call predecessors, (920), 267 states have return successors, (928), 903 states have call predecessors, (928), 913 states have call successors, (928) [2022-03-20 17:33:07,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3629 states to 3629 states and 5099 transitions. [2022-03-20 17:33:07,957 INFO L78 Accepts]: Start accepts. Automaton has 3629 states and 5099 transitions. Word has length 90 [2022-03-20 17:33:07,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:07,957 INFO L478 AbstractCegarLoop]: Abstraction has 3629 states and 5099 transitions. [2022-03-20 17:33:07,957 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) [2022-03-20 17:33:07,957 INFO L276 IsEmpty]: Start isEmpty. Operand 3629 states and 5099 transitions. [2022-03-20 17:33:07,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-03-20 17:33:07,960 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:07,960 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] [2022-03-20 17:33:07,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-03-20 17:33:08,175 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 [2022-03-20 17:33:08,175 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:08,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:08,176 INFO L85 PathProgramCache]: Analyzing trace with hash 2128490856, now seen corresponding path program 1 times [2022-03-20 17:33:08,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:08,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [584834405] [2022-03-20 17:33:08,178 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:33:08,178 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:33:08,178 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:33:08,179 INFO L85 PathProgramCache]: Analyzing trace with hash 2128490856, now seen corresponding path program 2 times [2022-03-20 17:33:08,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:08,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699538069] [2022-03-20 17:33:08,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:08,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:08,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:08,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:33:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:08,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:33:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:08,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:33:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:08,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:08,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:08,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:33:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:08,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 17:33:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:08,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-20 17:33:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:08,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-20 17:33:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:08,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:08,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:33:08,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:08,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699538069] [2022-03-20 17:33:08,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699538069] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:33:08,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292662989] [2022-03-20 17:33:08,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:33:08,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:33:08,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:33:08,532 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) [2022-03-20 17:33:08,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-20 17:33:10,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:33:10,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:33:10,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 1779 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-20 17:33:10,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:33:10,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:33:10,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:33:10,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292662989] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:10,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:33:10,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-03-20 17:33:10,580 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:10,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [584834405] [2022-03-20 17:33:10,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [584834405] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:10,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:10,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:10,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592048045] [2022-03-20 17:33:10,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:10,580 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:33:10,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:10,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:33:10,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-20 17:33:10,581 INFO L87 Difference]: Start difference. First operand 3629 states and 5099 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) [2022-03-20 17:33:14,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:14,261 INFO L93 Difference]: Finished difference Result 4848 states and 6884 transitions. [2022-03-20 17:33:14,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 17:33:14,262 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 [2022-03-20 17:33:14,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:14,278 INFO L225 Difference]: With dead ends: 4848 [2022-03-20 17:33:14,278 INFO L226 Difference]: Without dead ends: 4842 [2022-03-20 17:33:14,281 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 [2022-03-20 17:33:14,282 INFO L913 BasicCegarLoop]: 4197 mSDtfsCounter, 4241 mSDsluCounter, 3116 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4242 SdHoareTripleChecker+Valid, 7313 SdHoareTripleChecker+Invalid, 1872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-20 17:33:14,282 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4242 Valid, 7313 Invalid, 1872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1860 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-20 17:33:14,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4842 states. [2022-03-20 17:33:15,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4842 to 3609. [2022-03-20 17:33:15,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 2425 states have (on average 1.3327835051546393) internal successors, (3232), 2493 states have internal predecessors, (3232), 918 states have call successors, (918), 258 states have call predecessors, (918), 265 states have return successors, (924), 899 states have call predecessors, (924), 911 states have call successors, (924) [2022-03-20 17:33:15,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 5074 transitions. [2022-03-20 17:33:15,568 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 5074 transitions. Word has length 91 [2022-03-20 17:33:15,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:15,568 INFO L478 AbstractCegarLoop]: Abstraction has 3609 states and 5074 transitions. [2022-03-20 17:33:15,568 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) [2022-03-20 17:33:15,568 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 5074 transitions. [2022-03-20 17:33:15,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-03-20 17:33:15,570 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:15,570 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] [2022-03-20 17:33:15,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-20 17:33:15,795 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 [2022-03-20 17:33:15,795 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:15,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:15,796 INFO L85 PathProgramCache]: Analyzing trace with hash -898911735, now seen corresponding path program 1 times [2022-03-20 17:33:15,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:15,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [488661658] [2022-03-20 17:33:15,798 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:33:15,798 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:33:15,798 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:33:15,798 INFO L85 PathProgramCache]: Analyzing trace with hash -898911735, now seen corresponding path program 2 times [2022-03-20 17:33:15,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:15,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761696634] [2022-03-20 17:33:15,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:15,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:15,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:16,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:33:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:16,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:33:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:16,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:33:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:16,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:16,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:16,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:33:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:16,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 17:33:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:16,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-20 17:33:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:16,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-20 17:33:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:16,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:16,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:33:16,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:16,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761696634] [2022-03-20 17:33:16,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761696634] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:33:16,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146659911] [2022-03-20 17:33:16,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:33:16,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:33:16,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:33:16,163 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) [2022-03-20 17:33:16,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-20 17:33:17,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:33:17,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:33:17,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-20 17:33:17,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:33:18,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:33:18,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:33:18,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146659911] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:18,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:33:18,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2022-03-20 17:33:18,041 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:18,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [488661658] [2022-03-20 17:33:18,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [488661658] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:18,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:18,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 17:33:18,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896109592] [2022-03-20 17:33:18,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:18,042 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 17:33:18,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:18,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 17:33:18,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-03-20 17:33:18,044 INFO L87 Difference]: Start difference. First operand 3609 states and 5074 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) [2022-03-20 17:33:19,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:19,539 INFO L93 Difference]: Finished difference Result 3628 states and 5095 transitions. [2022-03-20 17:33:19,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 17:33:19,540 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 [2022-03-20 17:33:19,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:19,550 INFO L225 Difference]: With dead ends: 3628 [2022-03-20 17:33:19,550 INFO L226 Difference]: Without dead ends: 3596 [2022-03-20 17:33:19,552 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 [2022-03-20 17:33:19,552 INFO L913 BasicCegarLoop]: 2469 mSDtfsCounter, 5 mSDsluCounter, 17135 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 19604 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:33:19,553 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 19604 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 17:33:19,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3596 states. [2022-03-20 17:33:20,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3596 to 3596. [2022-03-20 17:33:20,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3596 states, 2414 states have (on average 1.3330571665285833) internal successors, (3218), 2482 states have internal predecessors, (3218), 917 states have call successors, (917), 257 states have call predecessors, (917), 264 states have return successors, (923), 898 states have call predecessors, (923), 910 states have call successors, (923) [2022-03-20 17:33:20,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3596 states to 3596 states and 5058 transitions. [2022-03-20 17:33:20,732 INFO L78 Accepts]: Start accepts. Automaton has 3596 states and 5058 transitions. Word has length 90 [2022-03-20 17:33:20,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:20,732 INFO L478 AbstractCegarLoop]: Abstraction has 3596 states and 5058 transitions. [2022-03-20 17:33:20,732 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) [2022-03-20 17:33:20,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3596 states and 5058 transitions. [2022-03-20 17:33:20,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-20 17:33:20,734 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:20,734 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] [2022-03-20 17:33:20,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-03-20 17:33:20,954 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 [2022-03-20 17:33:20,954 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:20,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:20,954 INFO L85 PathProgramCache]: Analyzing trace with hash 695765407, now seen corresponding path program 1 times [2022-03-20 17:33:20,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:20,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [734618330] [2022-03-20 17:33:20,957 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:33:20,957 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:33:20,957 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:33:20,957 INFO L85 PathProgramCache]: Analyzing trace with hash 695765407, now seen corresponding path program 2 times [2022-03-20 17:33:20,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:20,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679347101] [2022-03-20 17:33:20,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:20,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:21,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:21,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:33:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:21,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:33:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:21,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:33:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:21,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:33:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:21,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:21,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-20 17:33:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:21,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:33:21,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:21,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679347101] [2022-03-20 17:33:21,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679347101] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:33:21,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656855915] [2022-03-20 17:33:21,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:33:21,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:33:21,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:33:21,384 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) [2022-03-20 17:33:21,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-20 17:33:23,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:33:23,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:33:23,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 17:33:23,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:33:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:33:23,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:33:23,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656855915] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:23,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:33:23,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-20 17:33:23,235 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:23,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [734618330] [2022-03-20 17:33:23,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [734618330] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:23,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:23,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:33:23,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526527706] [2022-03-20 17:33:23,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:23,235 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 17:33:23,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:23,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 17:33:23,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:33:23,236 INFO L87 Difference]: Start difference. First operand 3596 states and 5058 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) [2022-03-20 17:33:24,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:24,503 INFO L93 Difference]: Finished difference Result 3657 states and 5129 transitions. [2022-03-20 17:33:24,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 17:33:24,503 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 [2022-03-20 17:33:24,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:24,510 INFO L225 Difference]: With dead ends: 3657 [2022-03-20 17:33:24,510 INFO L226 Difference]: Without dead ends: 3612 [2022-03-20 17:33:24,511 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 [2022-03-20 17:33:24,511 INFO L913 BasicCegarLoop]: 2471 mSDtfsCounter, 5 mSDsluCounter, 9862 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 12333 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:33:24,511 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 12333 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:33:24,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3612 states. [2022-03-20 17:33:25,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3612 to 3600. [2022-03-20 17:33:25,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3600 states, 2417 states have (on average 1.3326437732726522) internal successors, (3221), 2485 states have internal predecessors, (3221), 917 states have call successors, (917), 257 states have call predecessors, (917), 265 states have return successors, (924), 899 states have call predecessors, (924), 910 states have call successors, (924) [2022-03-20 17:33:25,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3600 states to 3600 states and 5062 transitions. [2022-03-20 17:33:25,673 INFO L78 Accepts]: Start accepts. Automaton has 3600 states and 5062 transitions. Word has length 89 [2022-03-20 17:33:25,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:25,673 INFO L478 AbstractCegarLoop]: Abstraction has 3600 states and 5062 transitions. [2022-03-20 17:33:25,673 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) [2022-03-20 17:33:25,673 INFO L276 IsEmpty]: Start isEmpty. Operand 3600 states and 5062 transitions. [2022-03-20 17:33:25,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-20 17:33:25,675 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:25,676 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:33:25,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-03-20 17:33:25,891 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 [2022-03-20 17:33:25,891 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:25,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:25,892 INFO L85 PathProgramCache]: Analyzing trace with hash -603271264, now seen corresponding path program 1 times [2022-03-20 17:33:25,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:25,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1530043090] [2022-03-20 17:33:25,894 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:33:25,894 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:33:25,894 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:33:25,894 INFO L85 PathProgramCache]: Analyzing trace with hash -603271264, now seen corresponding path program 2 times [2022-03-20 17:33:25,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:25,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701291082] [2022-03-20 17:33:25,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:25,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:26,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:26,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:33:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:26,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:33:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:26,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:33:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:26,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:33:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:26,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:26,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-20 17:33:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:26,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 17:33:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:26,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-20 17:33:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:26,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:33:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:26,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:26,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:33:26,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:26,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701291082] [2022-03-20 17:33:26,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701291082] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:33:26,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291605675] [2022-03-20 17:33:26,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:33:26,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:33:26,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:33:26,317 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) [2022-03-20 17:33:26,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-20 17:33:28,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:33:28,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:33:28,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 2170 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-20 17:33:28,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:33:28,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:33:28,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:33:28,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291605675] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:28,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:33:28,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-03-20 17:33:28,251 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:28,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1530043090] [2022-03-20 17:33:28,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1530043090] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:28,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:28,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:33:28,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006218152] [2022-03-20 17:33:28,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:28,251 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:33:28,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:28,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:33:28,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-03-20 17:33:28,252 INFO L87 Difference]: Start difference. First operand 3600 states and 5062 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2022-03-20 17:33:29,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:29,884 INFO L93 Difference]: Finished difference Result 4796 states and 6821 transitions. [2022-03-20 17:33:29,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:33:29,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 98 [2022-03-20 17:33:29,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:29,896 INFO L225 Difference]: With dead ends: 4796 [2022-03-20 17:33:29,896 INFO L226 Difference]: Without dead ends: 4793 [2022-03-20 17:33:29,898 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-03-20 17:33:29,898 INFO L913 BasicCegarLoop]: 4220 mSDtfsCounter, 1766 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 6640 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:33:29,898 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1766 Valid, 6640 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:33:29,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4793 states. [2022-03-20 17:33:31,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4793 to 3604. [2022-03-20 17:33:31,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3604 states, 2421 states have (on average 1.3329202808756713) internal successors, (3227), 2489 states have internal predecessors, (3227), 917 states have call successors, (917), 257 states have call predecessors, (917), 265 states have return successors, (924), 899 states have call predecessors, (924), 910 states have call successors, (924) [2022-03-20 17:33:31,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3604 states to 3604 states and 5068 transitions. [2022-03-20 17:33:31,222 INFO L78 Accepts]: Start accepts. Automaton has 3604 states and 5068 transitions. Word has length 98 [2022-03-20 17:33:31,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:31,222 INFO L478 AbstractCegarLoop]: Abstraction has 3604 states and 5068 transitions. [2022-03-20 17:33:31,222 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2022-03-20 17:33:31,222 INFO L276 IsEmpty]: Start isEmpty. Operand 3604 states and 5068 transitions. [2022-03-20 17:33:31,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-03-20 17:33:31,224 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:31,224 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] [2022-03-20 17:33:31,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-20 17:33:31,435 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 [2022-03-20 17:33:31,436 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:31,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:31,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1270672595, now seen corresponding path program 1 times [2022-03-20 17:33:31,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:31,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [864650166] [2022-03-20 17:33:31,438 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:33:31,438 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:33:31,438 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:33:31,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1270672595, now seen corresponding path program 2 times [2022-03-20 17:33:31,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:31,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677840405] [2022-03-20 17:33:31,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:31,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:31,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:31,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:33:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:31,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:33:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:31,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:33:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:31,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:33:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:31,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:31,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-20 17:33:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:31,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:33:31,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:31,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677840405] [2022-03-20 17:33:31,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677840405] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:33:31,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907544529] [2022-03-20 17:33:31,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:33:31,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:33:31,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:33:31,818 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) [2022-03-20 17:33:31,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-20 17:33:33,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:33:33,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:33:33,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-20 17:33:33,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:33:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:33:33,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:33:33,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907544529] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:33,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:33:33,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-03-20 17:33:33,664 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:33,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [864650166] [2022-03-20 17:33:33,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [864650166] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:33,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:33,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:33:33,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255586581] [2022-03-20 17:33:33,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:33,664 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:33:33,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:33,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:33:33,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-20 17:33:33,665 INFO L87 Difference]: Start difference. First operand 3604 states and 5068 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) [2022-03-20 17:33:35,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:35,007 INFO L93 Difference]: Finished difference Result 3650 states and 5122 transitions. [2022-03-20 17:33:35,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:33:35,007 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 [2022-03-20 17:33:35,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:35,015 INFO L225 Difference]: With dead ends: 3650 [2022-03-20 17:33:35,016 INFO L226 Difference]: Without dead ends: 3605 [2022-03-20 17:33:35,017 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 [2022-03-20 17:33:35,017 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 [2022-03-20 17:33:35,017 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] [2022-03-20 17:33:35,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3605 states. [2022-03-20 17:33:36,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3605 to 3604. [2022-03-20 17:33:36,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3604 states, 2421 states have (on average 1.3329202808756713) internal successors, (3227), 2489 states have internal predecessors, (3227), 917 states have call successors, (917), 257 states have call predecessors, (917), 265 states have return successors, (924), 899 states have call predecessors, (924), 910 states have call successors, (924) [2022-03-20 17:33:36,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3604 states to 3604 states and 5068 transitions. [2022-03-20 17:33:36,313 INFO L78 Accepts]: Start accepts. Automaton has 3604 states and 5068 transitions. Word has length 90 [2022-03-20 17:33:36,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:36,313 INFO L478 AbstractCegarLoop]: Abstraction has 3604 states and 5068 transitions. [2022-03-20 17:33:36,313 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) [2022-03-20 17:33:36,313 INFO L276 IsEmpty]: Start isEmpty. Operand 3604 states and 5068 transitions. [2022-03-20 17:33:36,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-20 17:33:36,315 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:36,315 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:33:36,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-20 17:33:36,526 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 [2022-03-20 17:33:36,527 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:36,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:36,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1451209798, now seen corresponding path program 1 times [2022-03-20 17:33:36,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:36,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [892113616] [2022-03-20 17:33:36,530 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:33:36,530 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:33:36,530 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:33:36,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1451209798, now seen corresponding path program 2 times [2022-03-20 17:33:36,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:36,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715782283] [2022-03-20 17:33:36,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:36,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:36,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:36,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:33:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:36,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:33:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:36,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:33:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:36,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:33:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:36,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:36,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-20 17:33:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:36,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-20 17:33:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:36,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-20 17:33:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:36,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:33:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:36,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:36,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:33:36,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:36,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715782283] [2022-03-20 17:33:36,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715782283] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:33:36,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492252264] [2022-03-20 17:33:36,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:33:36,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:33:36,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:33:36,876 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) [2022-03-20 17:33:36,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-20 17:33:38,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:33:38,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:33:38,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 2297 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-20 17:33:38,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:33:39,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:33:39,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:33:39,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492252264] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:39,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:33:39,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-03-20 17:33:39,030 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:39,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [892113616] [2022-03-20 17:33:39,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [892113616] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:39,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:39,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:33:39,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584343092] [2022-03-20 17:33:39,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:39,031 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:33:39,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:39,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:33:39,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:33:39,031 INFO L87 Difference]: Start difference. First operand 3604 states and 5068 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2022-03-20 17:33:42,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:42,946 INFO L93 Difference]: Finished difference Result 7265 states and 10425 transitions. [2022-03-20 17:33:42,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 17:33:42,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 98 [2022-03-20 17:33:42,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:42,957 INFO L225 Difference]: With dead ends: 7265 [2022-03-20 17:33:42,957 INFO L226 Difference]: Without dead ends: 4815 [2022-03-20 17:33:42,963 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:33:42,963 INFO L913 BasicCegarLoop]: 4210 mSDtfsCounter, 4204 mSDsluCounter, 3112 mSDsCounter, 0 mSdLazyCounter, 1857 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4204 SdHoareTripleChecker+Valid, 7322 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-20 17:33:42,963 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4204 Valid, 7322 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1857 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-20 17:33:42,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4815 states. [2022-03-20 17:33:44,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4815 to 3618. [2022-03-20 17:33:44,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3618 states, 2432 states have (on average 1.332236842105263) internal successors, (3240), 2501 states have internal predecessors, (3240), 918 states have call successors, (918), 258 states have call predecessors, (918), 267 states have return successors, (927), 900 states have call predecessors, (927), 911 states have call successors, (927) [2022-03-20 17:33:44,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 5085 transitions. [2022-03-20 17:33:44,320 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 5085 transitions. Word has length 98 [2022-03-20 17:33:44,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:44,320 INFO L478 AbstractCegarLoop]: Abstraction has 3618 states and 5085 transitions. [2022-03-20 17:33:44,320 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2022-03-20 17:33:44,320 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 5085 transitions. [2022-03-20 17:33:44,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-20 17:33:44,322 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:44,322 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] [2022-03-20 17:33:44,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-03-20 17:33:44,547 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 [2022-03-20 17:33:44,547 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:44,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:44,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1494471512, now seen corresponding path program 1 times [2022-03-20 17:33:44,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:44,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [184617784] [2022-03-20 17:33:44,550 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:33:44,550 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:33:44,550 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:33:44,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1494471512, now seen corresponding path program 2 times [2022-03-20 17:33:44,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:44,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392804589] [2022-03-20 17:33:44,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:44,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:44,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:44,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:33:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:44,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:33:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:44,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:33:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:44,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:44,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:33:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:44,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:44,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 17:33:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:44,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:44,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:33:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:44,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 17:33:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:44,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:44,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:33:44,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:44,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392804589] [2022-03-20 17:33:44,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392804589] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:33:44,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662802157] [2022-03-20 17:33:44,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:33:44,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:33:44,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:33:44,948 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) [2022-03-20 17:33:44,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-20 17:33:46,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:33:46,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:33:46,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-20 17:33:46,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:33:47,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:33:47,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:33:47,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662802157] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:47,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:33:47,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 23 [2022-03-20 17:33:47,016 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:47,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [184617784] [2022-03-20 17:33:47,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [184617784] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:47,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:47,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:33:47,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549950552] [2022-03-20 17:33:47,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:47,016 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 17:33:47,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:47,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 17:33:47,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2022-03-20 17:33:47,017 INFO L87 Difference]: Start difference. First operand 3618 states and 5085 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) [2022-03-20 17:33:48,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:48,728 INFO L93 Difference]: Finished difference Result 3635 states and 5103 transitions. [2022-03-20 17:33:48,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 17:33:48,729 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 [2022-03-20 17:33:48,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:48,738 INFO L225 Difference]: With dead ends: 3635 [2022-03-20 17:33:48,738 INFO L226 Difference]: Without dead ends: 3611 [2022-03-20 17:33:48,740 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 [2022-03-20 17:33:48,740 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 [2022-03-20 17:33:48,740 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] [2022-03-20 17:33:48,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2022-03-20 17:33:50,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 3611. [2022-03-20 17:33:50,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3611 states, 2428 states have (on average 1.3323723228995057) internal successors, (3235), 2497 states have internal predecessors, (3235), 916 states have call successors, (916), 257 states have call predecessors, (916), 266 states have return successors, (925), 898 states have call predecessors, (925), 909 states have call successors, (925) [2022-03-20 17:33:50,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3611 states to 3611 states and 5076 transitions. [2022-03-20 17:33:50,081 INFO L78 Accepts]: Start accepts. Automaton has 3611 states and 5076 transitions. Word has length 103 [2022-03-20 17:33:50,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:50,081 INFO L478 AbstractCegarLoop]: Abstraction has 3611 states and 5076 transitions. [2022-03-20 17:33:50,081 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) [2022-03-20 17:33:50,081 INFO L276 IsEmpty]: Start isEmpty. Operand 3611 states and 5076 transitions. [2022-03-20 17:33:50,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-20 17:33:50,083 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:50,083 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] [2022-03-20 17:33:50,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-03-20 17:33:50,298 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 [2022-03-20 17:33:50,299 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:50,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:50,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1608832473, now seen corresponding path program 1 times [2022-03-20 17:33:50,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:50,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2133327075] [2022-03-20 17:33:50,301 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:33:50,301 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:33:50,301 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:33:50,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1608832473, now seen corresponding path program 2 times [2022-03-20 17:33:50,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:50,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432682254] [2022-03-20 17:33:50,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:50,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:50,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:50,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:33:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:50,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:33:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:50,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:33:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:50,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:50,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:33:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:50,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:50,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:33:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:50,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:33:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:50,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:33:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:50,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 17:33:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:50,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:33:50,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:50,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432682254] [2022-03-20 17:33:50,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432682254] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:33:50,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379527975] [2022-03-20 17:33:50,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:33:50,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:33:50,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:33:50,721 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) [2022-03-20 17:33:50,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-20 17:33:52,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:33:52,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:33:52,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 1978 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-20 17:33:52,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:33:52,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:33:52,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:33:52,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379527975] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:52,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:33:52,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 23 [2022-03-20 17:33:52,756 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:52,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2133327075] [2022-03-20 17:33:52,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2133327075] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:52,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:52,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:33:52,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873592048] [2022-03-20 17:33:52,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:52,756 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 17:33:52,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:52,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 17:33:52,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2022-03-20 17:33:52,757 INFO L87 Difference]: Start difference. First operand 3611 states and 5076 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) [2022-03-20 17:33:54,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:33:54,441 INFO L93 Difference]: Finished difference Result 3628 states and 5094 transitions. [2022-03-20 17:33:54,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 17:33:54,442 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 [2022-03-20 17:33:54,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:33:54,452 INFO L225 Difference]: With dead ends: 3628 [2022-03-20 17:33:54,452 INFO L226 Difference]: Without dead ends: 3564 [2022-03-20 17:33:54,454 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 [2022-03-20 17:33:54,454 INFO L913 BasicCegarLoop]: 2465 mSDtfsCounter, 7 mSDsluCounter, 29200 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-03-20 17:33:54,455 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] [2022-03-20 17:33:54,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2022-03-20 17:33:55,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 3564. [2022-03-20 17:33:55,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3564 states, 2390 states have (on average 1.3301255230125524) internal successors, (3179), 2459 states have internal predecessors, (3179), 911 states have call successors, (911), 253 states have call predecessors, (911), 262 states have return successors, (920), 893 states have call predecessors, (920), 904 states have call successors, (920) [2022-03-20 17:33:55,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 5010 transitions. [2022-03-20 17:33:55,750 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 5010 transitions. Word has length 102 [2022-03-20 17:33:55,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:33:55,750 INFO L478 AbstractCegarLoop]: Abstraction has 3564 states and 5010 transitions. [2022-03-20 17:33:55,750 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) [2022-03-20 17:33:55,750 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 5010 transitions. [2022-03-20 17:33:55,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-03-20 17:33:55,752 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:33:55,753 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] [2022-03-20 17:33:55,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-03-20 17:33:55,958 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 [2022-03-20 17:33:55,959 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:33:55,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:33:55,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1654728766, now seen corresponding path program 1 times [2022-03-20 17:33:55,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:55,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1432084598] [2022-03-20 17:33:55,961 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:33:55,962 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:33:55,962 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:33:55,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1654728766, now seen corresponding path program 2 times [2022-03-20 17:33:55,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:33:55,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554993992] [2022-03-20 17:33:55,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:33:55,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:33:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:56,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:33:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:56,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:33:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:56,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:33:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:56,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:33:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:56,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:56,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:33:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:56,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:56,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 17:33:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:56,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:56,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:33:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:56,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 17:33:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:56,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:33:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:33:56,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:33:56,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:33:56,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554993992] [2022-03-20 17:33:56,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554993992] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:33:56,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242775177] [2022-03-20 17:33:56,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:33:56,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:33:56,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:33:56,408 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) [2022-03-20 17:33:56,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-20 17:33:58,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:33:58,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:33:58,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 1956 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-20 17:33:58,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:33:58,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:33:58,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:33:58,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242775177] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:58,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:33:58,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [10] total 22 [2022-03-20 17:33:58,592 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:33:58,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1432084598] [2022-03-20 17:33:58,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1432084598] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:33:58,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:33:58,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:33:58,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032141084] [2022-03-20 17:33:58,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:33:58,593 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 17:33:58,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:33:58,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 17:33:58,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-03-20 17:33:58,593 INFO L87 Difference]: Start difference. First operand 3564 states and 5010 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) [2022-03-20 17:34:00,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:34:00,293 INFO L93 Difference]: Finished difference Result 3581 states and 5028 transitions. [2022-03-20 17:34:00,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 17:34:00,293 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 [2022-03-20 17:34:00,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:34:00,300 INFO L225 Difference]: With dead ends: 3581 [2022-03-20 17:34:00,300 INFO L226 Difference]: Without dead ends: 3562 [2022-03-20 17:34:00,301 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 [2022-03-20 17:34:00,303 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 [2022-03-20 17:34:00,307 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] [2022-03-20 17:34:00,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2022-03-20 17:34:01,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3562. [2022-03-20 17:34:01,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 2389 states have (on average 1.3298451234826287) internal successors, (3177), 2458 states have internal predecessors, (3177), 910 states have call successors, (910), 253 states have call predecessors, (910), 262 states have return successors, (919), 892 states have call predecessors, (919), 903 states have call successors, (919) [2022-03-20 17:34:01,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 5006 transitions. [2022-03-20 17:34:01,623 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 5006 transitions. Word has length 95 [2022-03-20 17:34:01,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:34:01,623 INFO L478 AbstractCegarLoop]: Abstraction has 3562 states and 5006 transitions. [2022-03-20 17:34:01,624 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) [2022-03-20 17:34:01,624 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 5006 transitions. [2022-03-20 17:34:01,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-20 17:34:01,626 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:34:01,626 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] [2022-03-20 17:34:01,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-03-20 17:34:01,851 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 [2022-03-20 17:34:01,851 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:34:01,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:34:01,852 INFO L85 PathProgramCache]: Analyzing trace with hash 2068306364, now seen corresponding path program 1 times [2022-03-20 17:34:01,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:01,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [870772606] [2022-03-20 17:34:01,854 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:34:01,854 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:34:01,854 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:34:01,854 INFO L85 PathProgramCache]: Analyzing trace with hash 2068306364, now seen corresponding path program 2 times [2022-03-20 17:34:01,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:34:01,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433390855] [2022-03-20 17:34:01,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:34:01,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:34:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:02,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:34:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:02,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:34:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:02,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:34:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:02,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:34:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:02,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:34:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:02,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:02,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-20 17:34:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:02,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:34:02,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:34:02,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433390855] [2022-03-20 17:34:02,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433390855] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:34:02,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193886826] [2022-03-20 17:34:02,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:34:02,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:34:02,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:34:02,260 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) [2022-03-20 17:34:02,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-20 17:34:04,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:34:04,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:34:04,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 17:34:04,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:34:04,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:34:04,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:34:04,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193886826] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:04,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:34:04,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-20 17:34:04,325 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:34:04,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [870772606] [2022-03-20 17:34:04,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [870772606] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:04,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:34:04,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:34:04,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507462359] [2022-03-20 17:34:04,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:34:04,325 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 17:34:04,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:04,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 17:34:04,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-03-20 17:34:04,325 INFO L87 Difference]: Start difference. First operand 3562 states and 5006 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) [2022-03-20 17:34:05,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:34:05,706 INFO L93 Difference]: Finished difference Result 3621 states and 5075 transitions. [2022-03-20 17:34:05,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 17:34:05,706 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 [2022-03-20 17:34:05,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:34:05,715 INFO L225 Difference]: With dead ends: 3621 [2022-03-20 17:34:05,715 INFO L226 Difference]: Without dead ends: 3576 [2022-03-20 17:34:05,716 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 [2022-03-20 17:34:05,716 INFO L913 BasicCegarLoop]: 2394 mSDtfsCounter, 33 mSDsluCounter, 9520 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 11914 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:34:05,717 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 11914 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:34:05,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3576 states. [2022-03-20 17:34:07,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3576 to 3561. [2022-03-20 17:34:07,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3561 states, 2388 states have (on average 1.3299832495812396) internal successors, (3176), 2457 states have internal predecessors, (3176), 910 states have call successors, (910), 253 states have call predecessors, (910), 262 states have return successors, (919), 892 states have call predecessors, (919), 903 states have call successors, (919) [2022-03-20 17:34:07,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 5005 transitions. [2022-03-20 17:34:07,261 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 5005 transitions. Word has length 93 [2022-03-20 17:34:07,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:34:07,262 INFO L478 AbstractCegarLoop]: Abstraction has 3561 states and 5005 transitions. [2022-03-20 17:34:07,262 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) [2022-03-20 17:34:07,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 5005 transitions. [2022-03-20 17:34:07,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-20 17:34:07,264 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:34:07,264 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:34:07,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-03-20 17:34:07,479 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 [2022-03-20 17:34:07,479 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:34:07,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:34:07,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1320781830, now seen corresponding path program 1 times [2022-03-20 17:34:07,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:07,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [300652620] [2022-03-20 17:34:07,482 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:34:07,482 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:34:07,482 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:34:07,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1320781830, now seen corresponding path program 2 times [2022-03-20 17:34:07,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:34:07,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954314181] [2022-03-20 17:34:07,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:34:07,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:34:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:07,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:34:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:07,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:34:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:07,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:34:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:07,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:34:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:07,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:07,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:34:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:07,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:07,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 17:34:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:07,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:07,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:34:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:07,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 17:34:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:07,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:07,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:34:07,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:34:07,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954314181] [2022-03-20 17:34:07,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954314181] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:34:07,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146112662] [2022-03-20 17:34:07,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:34:07,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:34:07,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:34:07,929 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) [2022-03-20 17:34:07,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-20 17:34:09,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:34:09,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:34:09,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-20 17:34:09,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:34:10,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:34:10,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:34:10,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146112662] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:10,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:34:10,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [10] total 22 [2022-03-20 17:34:10,090 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:34:10,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [300652620] [2022-03-20 17:34:10,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [300652620] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:10,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:34:10,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:34:10,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596722934] [2022-03-20 17:34:10,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:34:10,091 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 17:34:10,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:10,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 17:34:10,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-03-20 17:34:10,091 INFO L87 Difference]: Start difference. First operand 3561 states and 5005 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) [2022-03-20 17:34:11,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:34:11,878 INFO L93 Difference]: Finished difference Result 3578 states and 5023 transitions. [2022-03-20 17:34:11,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 17:34:11,879 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 [2022-03-20 17:34:11,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:34:11,888 INFO L225 Difference]: With dead ends: 3578 [2022-03-20 17:34:11,888 INFO L226 Difference]: Without dead ends: 3554 [2022-03-20 17:34:11,890 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 [2022-03-20 17:34:11,891 INFO L913 BasicCegarLoop]: 2393 mSDtfsCounter, 7 mSDsluCounter, 28357 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30750 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-20 17:34:11,891 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 30750 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-20 17:34:11,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3554 states. [2022-03-20 17:34:13,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3554 to 3554. [2022-03-20 17:34:13,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 2384 states have (on average 1.3301174496644295) internal successors, (3171), 2453 states have internal predecessors, (3171), 908 states have call successors, (908), 252 states have call predecessors, (908), 261 states have return successors, (917), 890 states have call predecessors, (917), 901 states have call successors, (917) [2022-03-20 17:34:13,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 4996 transitions. [2022-03-20 17:34:13,238 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 4996 transitions. Word has length 96 [2022-03-20 17:34:13,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:34:13,238 INFO L478 AbstractCegarLoop]: Abstraction has 3554 states and 4996 transitions. [2022-03-20 17:34:13,239 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) [2022-03-20 17:34:13,239 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 4996 transitions. [2022-03-20 17:34:13,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-20 17:34:13,243 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:34:13,243 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] [2022-03-20 17:34:13,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-03-20 17:34:13,447 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 [2022-03-20 17:34:13,447 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:34:13,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:34:13,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1254251762, now seen corresponding path program 1 times [2022-03-20 17:34:13,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:13,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [819031913] [2022-03-20 17:34:13,450 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:34:13,450 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:34:13,450 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:34:13,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1254251762, now seen corresponding path program 2 times [2022-03-20 17:34:13,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:34:13,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539505477] [2022-03-20 17:34:13,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:34:13,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:34:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:13,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:34:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:13,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:34:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:13,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:34:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:13,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:34:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:13,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:13,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:13,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:34:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:13,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 17:34:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:13,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-20 17:34:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:13,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-20 17:34:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:13,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:13,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:34:13,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:34:13,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539505477] [2022-03-20 17:34:13,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539505477] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:34:13,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753682972] [2022-03-20 17:34:13,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:34:13,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:34:13,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:34:13,810 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) [2022-03-20 17:34:13,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-20 17:34:15,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:34:15,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:34:15,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 1846 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-20 17:34:15,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:34:15,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:34:15,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:34:15,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753682972] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:15,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:34:15,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-03-20 17:34:15,920 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:34:15,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [819031913] [2022-03-20 17:34:15,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [819031913] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:15,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:34:15,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:34:15,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216267198] [2022-03-20 17:34:15,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:34:15,921 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:34:15,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:15,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:34:15,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-20 17:34:15,921 INFO L87 Difference]: Start difference. First operand 3554 states and 4996 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) [2022-03-20 17:34:17,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:34:17,206 INFO L93 Difference]: Finished difference Result 3730 states and 5197 transitions. [2022-03-20 17:34:17,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:34:17,207 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 [2022-03-20 17:34:17,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:34:17,216 INFO L225 Difference]: With dead ends: 3730 [2022-03-20 17:34:17,216 INFO L226 Difference]: Without dead ends: 3591 [2022-03-20 17:34:17,217 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 [2022-03-20 17:34:17,217 INFO L913 BasicCegarLoop]: 2393 mSDtfsCounter, 136 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 4696 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 [2022-03-20 17:34:17,217 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 4696 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:34:17,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3591 states. [2022-03-20 17:34:18,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3591 to 3550. [2022-03-20 17:34:18,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 2382 states have (on average 1.329135180520571) internal successors, (3166), 2450 states have internal predecessors, (3166), 906 states have call successors, (906), 252 states have call predecessors, (906), 261 states have return successors, (915), 889 states have call predecessors, (915), 899 states have call successors, (915) [2022-03-20 17:34:18,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 4987 transitions. [2022-03-20 17:34:18,507 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 4987 transitions. Word has length 96 [2022-03-20 17:34:18,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:34:18,507 INFO L478 AbstractCegarLoop]: Abstraction has 3550 states and 4987 transitions. [2022-03-20 17:34:18,507 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) [2022-03-20 17:34:18,507 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 4987 transitions. [2022-03-20 17:34:18,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-20 17:34:18,509 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:34:18,509 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] [2022-03-20 17:34:18,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-03-20 17:34:18,723 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 [2022-03-20 17:34:18,723 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:34:18,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:34:18,724 INFO L85 PathProgramCache]: Analyzing trace with hash -752899614, now seen corresponding path program 1 times [2022-03-20 17:34:18,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:18,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [149594277] [2022-03-20 17:34:18,729 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:34:18,729 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:34:18,729 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:34:18,729 INFO L85 PathProgramCache]: Analyzing trace with hash -752899614, now seen corresponding path program 2 times [2022-03-20 17:34:18,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:34:18,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700300027] [2022-03-20 17:34:18,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:34:18,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:34:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:18,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:34:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:18,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:34:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:18,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:34:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:19,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:34:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:19,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:34:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:19,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:19,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 17:34:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:19,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-20 17:34:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:19,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:19,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-20 17:34:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:19,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:19,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:34:19,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:34:19,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700300027] [2022-03-20 17:34:19,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700300027] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:34:19,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36061058] [2022-03-20 17:34:19,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:34:19,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:34:19,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:34:19,103 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) [2022-03-20 17:34:19,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-20 17:34:21,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:34:21,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:34:21,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-20 17:34:21,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:34:21,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:34:21,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:34:21,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36061058] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:21,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:34:21,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-03-20 17:34:21,327 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:34:21,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [149594277] [2022-03-20 17:34:21,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [149594277] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:21,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:34:21,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 17:34:21,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296164457] [2022-03-20 17:34:21,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:34:21,328 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 17:34:21,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:21,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 17:34:21,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-03-20 17:34:21,328 INFO L87 Difference]: Start difference. First operand 3550 states and 4987 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) [2022-03-20 17:34:22,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:34:22,839 INFO L93 Difference]: Finished difference Result 3578 states and 5018 transitions. [2022-03-20 17:34:22,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 17:34:22,840 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 [2022-03-20 17:34:22,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:34:22,847 INFO L225 Difference]: With dead ends: 3578 [2022-03-20 17:34:22,847 INFO L226 Difference]: Without dead ends: 3550 [2022-03-20 17:34:22,848 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 [2022-03-20 17:34:22,849 INFO L913 BasicCegarLoop]: 2389 mSDtfsCounter, 5 mSDsluCounter, 16674 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 19063 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:34:22,849 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 19063 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 17:34:22,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3550 states. [2022-03-20 17:34:24,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3550 to 3550. [2022-03-20 17:34:24,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 2382 states have (on average 1.327455919395466) internal successors, (3162), 2450 states have internal predecessors, (3162), 906 states have call successors, (906), 252 states have call predecessors, (906), 261 states have return successors, (915), 889 states have call predecessors, (915), 899 states have call successors, (915) [2022-03-20 17:34:24,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 4983 transitions. [2022-03-20 17:34:24,164 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 4983 transitions. Word has length 102 [2022-03-20 17:34:24,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:34:24,164 INFO L478 AbstractCegarLoop]: Abstraction has 3550 states and 4983 transitions. [2022-03-20 17:34:24,165 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) [2022-03-20 17:34:24,165 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 4983 transitions. [2022-03-20 17:34:24,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-20 17:34:24,166 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:34:24,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:34:24,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-03-20 17:34:24,379 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 [2022-03-20 17:34:24,379 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:34:24,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:34:24,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1064222523, now seen corresponding path program 1 times [2022-03-20 17:34:24,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:24,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1786642413] [2022-03-20 17:34:24,382 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:34:24,382 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:34:24,382 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:34:24,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1064222523, now seen corresponding path program 2 times [2022-03-20 17:34:24,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:34:24,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602628738] [2022-03-20 17:34:24,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:34:24,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:34:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:24,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:34:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:24,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:34:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:24,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:34:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:24,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:34:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:24,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:24,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:34:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:24,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:24,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-20 17:34:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:24,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:34:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:24,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:24,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:24,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 17:34:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:24,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:24,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:34:24,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:34:24,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602628738] [2022-03-20 17:34:24,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602628738] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:34:24,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294729662] [2022-03-20 17:34:24,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:34:24,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:34:24,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:34:24,790 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) [2022-03-20 17:34:24,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-20 17:34:26,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:34:26,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:34:26,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 1912 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-20 17:34:26,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:34:27,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:34:27,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:34:27,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294729662] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:27,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:34:27,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-03-20 17:34:27,001 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:34:27,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1786642413] [2022-03-20 17:34:27,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1786642413] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:27,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:34:27,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 17:34:27,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246512120] [2022-03-20 17:34:27,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:34:27,002 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 17:34:27,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:27,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 17:34:27,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-03-20 17:34:27,002 INFO L87 Difference]: Start difference. First operand 3550 states and 4983 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) [2022-03-20 17:34:28,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:34:28,561 INFO L93 Difference]: Finished difference Result 3569 states and 5003 transitions. [2022-03-20 17:34:28,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 17:34:28,563 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 [2022-03-20 17:34:28,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:34:28,570 INFO L225 Difference]: With dead ends: 3569 [2022-03-20 17:34:28,571 INFO L226 Difference]: Without dead ends: 3531 [2022-03-20 17:34:28,574 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 [2022-03-20 17:34:28,574 INFO L913 BasicCegarLoop]: 2380 mSDtfsCounter, 5 mSDsluCounter, 16624 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 19004 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:34:28,575 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 19004 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 17:34:28,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3531 states. [2022-03-20 17:34:29,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3531 to 3531. [2022-03-20 17:34:29,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3531 states, 2371 states have (on average 1.3285533530156053) internal successors, (3150), 2439 states have internal predecessors, (3150), 902 states have call successors, (902), 249 states have call predecessors, (902), 257 states have return successors, (910), 884 states have call predecessors, (910), 895 states have call successors, (910) [2022-03-20 17:34:29,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3531 states to 3531 states and 4962 transitions. [2022-03-20 17:34:29,873 INFO L78 Accepts]: Start accepts. Automaton has 3531 states and 4962 transitions. Word has length 99 [2022-03-20 17:34:29,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:34:29,873 INFO L478 AbstractCegarLoop]: Abstraction has 3531 states and 4962 transitions. [2022-03-20 17:34:29,873 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) [2022-03-20 17:34:29,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3531 states and 4962 transitions. [2022-03-20 17:34:29,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-20 17:34:29,875 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:34:29,875 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] [2022-03-20 17:34:29,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-03-20 17:34:30,088 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 [2022-03-20 17:34:30,088 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:34:30,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:34:30,088 INFO L85 PathProgramCache]: Analyzing trace with hash 160391970, now seen corresponding path program 1 times [2022-03-20 17:34:30,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:30,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1245243186] [2022-03-20 17:34:30,091 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:34:30,091 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:34:30,091 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:34:30,091 INFO L85 PathProgramCache]: Analyzing trace with hash 160391970, now seen corresponding path program 2 times [2022-03-20 17:34:30,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:34:30,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23152448] [2022-03-20 17:34:30,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:34:30,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:34:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:30,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:34:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:30,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:34:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:30,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:34:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:30,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:34:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:30,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:34:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:30,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:30,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:34:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:30,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 17:34:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:30,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:34:30,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:34:30,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23152448] [2022-03-20 17:34:30,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23152448] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:34:30,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957171555] [2022-03-20 17:34:30,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:34:30,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:34:30,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:34:30,488 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) [2022-03-20 17:34:30,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-20 17:34:32,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:34:32,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:34:32,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 1800 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-20 17:34:32,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:34:32,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:34:32,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:34:32,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957171555] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:32,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:34:32,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-03-20 17:34:32,747 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:34:32,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1245243186] [2022-03-20 17:34:32,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1245243186] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:32,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:34:32,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 17:34:32,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132041385] [2022-03-20 17:34:32,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:34:32,747 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 17:34:32,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:32,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 17:34:32,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-03-20 17:34:32,748 INFO L87 Difference]: Start difference. First operand 3531 states and 4962 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) [2022-03-20 17:34:34,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:34:34,143 INFO L93 Difference]: Finished difference Result 3598 states and 5040 transitions. [2022-03-20 17:34:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 17:34:34,143 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 [2022-03-20 17:34:34,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:34:34,152 INFO L225 Difference]: With dead ends: 3598 [2022-03-20 17:34:34,152 INFO L226 Difference]: Without dead ends: 3553 [2022-03-20 17:34:34,154 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-03-20 17:34:34,154 INFO L913 BasicCegarLoop]: 2355 mSDtfsCounter, 23 mSDsluCounter, 16447 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 18802 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:34:34,154 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 18802 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:34:34,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3553 states. [2022-03-20 17:34:35,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3553 to 3536. [2022-03-20 17:34:35,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 2375 states have (on average 1.328421052631579) internal successors, (3155), 2443 states have internal predecessors, (3155), 902 states have call successors, (902), 249 states have call predecessors, (902), 258 states have return successors, (911), 885 states have call predecessors, (911), 895 states have call successors, (911) [2022-03-20 17:34:35,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 4968 transitions. [2022-03-20 17:34:35,468 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 4968 transitions. Word has length 97 [2022-03-20 17:34:35,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:34:35,468 INFO L478 AbstractCegarLoop]: Abstraction has 3536 states and 4968 transitions. [2022-03-20 17:34:35,468 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) [2022-03-20 17:34:35,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 4968 transitions. [2022-03-20 17:34:35,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-03-20 17:34:35,469 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:34:35,469 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] [2022-03-20 17:34:35,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-03-20 17:34:35,695 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 [2022-03-20 17:34:35,695 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:34:35,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:34:35,696 INFO L85 PathProgramCache]: Analyzing trace with hash 579512276, now seen corresponding path program 1 times [2022-03-20 17:34:35,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:35,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [501806959] [2022-03-20 17:34:35,698 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:34:35,698 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:34:35,698 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:34:35,698 INFO L85 PathProgramCache]: Analyzing trace with hash 579512276, now seen corresponding path program 2 times [2022-03-20 17:34:35,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:34:35,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723519392] [2022-03-20 17:34:35,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:34:35,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:34:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:35,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:34:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:35,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:34:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:35,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:34:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:35,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:34:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:35,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:34:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:35,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:35,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-20 17:34:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:36,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-20 17:34:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:36,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-20 17:34:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:36,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:34:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:36,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:36,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-20 17:34:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:36,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:34:36,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:34:36,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723519392] [2022-03-20 17:34:36,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723519392] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:34:36,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098914147] [2022-03-20 17:34:36,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:34:36,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:34:36,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:34:36,069 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) [2022-03-20 17:34:36,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-20 17:34:38,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:34:38,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:34:38,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 2311 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-20 17:34:38,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:34:38,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:34:38,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:34:38,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098914147] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:38,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:34:38,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-03-20 17:34:38,517 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:34:38,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [501806959] [2022-03-20 17:34:38,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [501806959] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:38,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:34:38,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:34:38,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866837551] [2022-03-20 17:34:38,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:34:38,517 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:34:38,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:38,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:34:38,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-03-20 17:34:38,518 INFO L87 Difference]: Start difference. First operand 3536 states and 4968 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) [2022-03-20 17:34:43,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:34:43,166 INFO L93 Difference]: Finished difference Result 4852 states and 6857 transitions. [2022-03-20 17:34:43,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 17:34:43,166 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 [2022-03-20 17:34:43,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:34:43,177 INFO L225 Difference]: With dead ends: 4852 [2022-03-20 17:34:43,177 INFO L226 Difference]: Without dead ends: 3590 [2022-03-20 17:34:43,181 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 [2022-03-20 17:34:43,182 INFO L913 BasicCegarLoop]: 2737 mSDtfsCounter, 5472 mSDsluCounter, 2397 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 784 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5473 SdHoareTripleChecker+Valid, 5134 SdHoareTripleChecker+Invalid, 2388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 784 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:34:43,182 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5473 Valid, 5134 Invalid, 2388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [784 Valid, 1604 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-03-20 17:34:43,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3590 states. [2022-03-20 17:34:44,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3590 to 3533. [2022-03-20 17:34:44,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3533 states, 2372 states have (on average 1.327150084317032) internal successors, (3148), 2440 states have internal predecessors, (3148), 902 states have call successors, (902), 249 states have call predecessors, (902), 258 states have return successors, (911), 885 states have call predecessors, (911), 895 states have call successors, (911) [2022-03-20 17:34:44,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3533 states to 3533 states and 4961 transitions. [2022-03-20 17:34:44,564 INFO L78 Accepts]: Start accepts. Automaton has 3533 states and 4961 transitions. Word has length 104 [2022-03-20 17:34:44,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:34:44,564 INFO L478 AbstractCegarLoop]: Abstraction has 3533 states and 4961 transitions. [2022-03-20 17:34:44,564 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) [2022-03-20 17:34:44,564 INFO L276 IsEmpty]: Start isEmpty. Operand 3533 states and 4961 transitions. [2022-03-20 17:34:44,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-03-20 17:34:44,566 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:34:44,566 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] [2022-03-20 17:34:44,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-03-20 17:34:44,775 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 [2022-03-20 17:34:44,775 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:34:44,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:34:44,776 INFO L85 PathProgramCache]: Analyzing trace with hash -932751459, now seen corresponding path program 1 times [2022-03-20 17:34:44,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:44,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [425404653] [2022-03-20 17:34:44,778 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:34:44,778 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:34:44,778 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:34:44,778 INFO L85 PathProgramCache]: Analyzing trace with hash -932751459, now seen corresponding path program 2 times [2022-03-20 17:34:44,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:34:44,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79724050] [2022-03-20 17:34:44,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:34:44,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:34:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:44,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:34:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:45,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:34:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:45,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:34:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:45,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:34:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:45,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:34:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:45,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:45,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-20 17:34:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:45,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 17:34:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:45,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-20 17:34:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:45,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:34:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:45,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:45,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-20 17:34:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:45,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:34:45,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:34:45,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79724050] [2022-03-20 17:34:45,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79724050] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:34:45,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936790890] [2022-03-20 17:34:45,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:34:45,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:34:45,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:34:45,149 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) [2022-03-20 17:34:45,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-20 17:34:47,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:34:47,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:34:47,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 2187 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 17:34:47,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:34:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:34:47,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:34:47,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936790890] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:47,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:34:47,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-03-20 17:34:47,324 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:34:47,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [425404653] [2022-03-20 17:34:47,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [425404653] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:47,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:34:47,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:34:47,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963955723] [2022-03-20 17:34:47,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:34:47,324 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:34:47,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:47,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:34:47,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-03-20 17:34:47,325 INFO L87 Difference]: Start difference. First operand 3533 states and 4961 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) [2022-03-20 17:34:49,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:34:49,083 INFO L93 Difference]: Finished difference Result 7232 states and 10353 transitions. [2022-03-20 17:34:49,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:34:49,083 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 [2022-03-20 17:34:49,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:34:49,115 INFO L225 Difference]: With dead ends: 7232 [2022-03-20 17:34:49,115 INFO L226 Difference]: Without dead ends: 4783 [2022-03-20 17:34:49,122 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 [2022-03-20 17:34:49,124 INFO L913 BasicCegarLoop]: 3189 mSDtfsCounter, 1831 mSDsluCounter, 2327 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 5516 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 [2022-03-20 17:34:49,124 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1831 Valid, 5516 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:34:49,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4783 states. [2022-03-20 17:34:50,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4783 to 4726. [2022-03-20 17:34:50,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4726 states, 3153 states have (on average 1.337139232477006) internal successors, (4216), 3243 states have internal predecessors, (4216), 1241 states have call successors, (1241), 320 states have call predecessors, (1241), 331 states have return successors, (1254), 1217 states have call predecessors, (1254), 1235 states have call successors, (1254) [2022-03-20 17:34:50,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4726 states to 4726 states and 6711 transitions. [2022-03-20 17:34:50,867 INFO L78 Accepts]: Start accepts. Automaton has 4726 states and 6711 transitions. Word has length 106 [2022-03-20 17:34:50,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:34:50,867 INFO L478 AbstractCegarLoop]: Abstraction has 4726 states and 6711 transitions. [2022-03-20 17:34:50,867 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) [2022-03-20 17:34:50,867 INFO L276 IsEmpty]: Start isEmpty. Operand 4726 states and 6711 transitions. [2022-03-20 17:34:50,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-20 17:34:50,869 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:34:50,869 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] [2022-03-20 17:34:50,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-03-20 17:34:51,084 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 [2022-03-20 17:34:51,085 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:34:51,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:34:51,085 INFO L85 PathProgramCache]: Analyzing trace with hash -720706508, now seen corresponding path program 1 times [2022-03-20 17:34:51,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:51,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1086903131] [2022-03-20 17:34:51,088 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:34:51,118 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:34:51,119 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:34:51,119 INFO L85 PathProgramCache]: Analyzing trace with hash -720706508, now seen corresponding path program 2 times [2022-03-20 17:34:51,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:34:51,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921480180] [2022-03-20 17:34:51,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:34:51,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:34:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:51,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:34:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:51,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:34:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:51,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:34:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:51,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:34:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:51,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:51,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:34:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:51,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:51,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:34:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:51,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:34:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:51,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:34:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:51,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 17:34:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:51,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:51,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:34:51,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:34:51,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921480180] [2022-03-20 17:34:51,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921480180] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:34:51,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290573260] [2022-03-20 17:34:51,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:34:51,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:34:51,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:34:51,629 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) [2022-03-20 17:34:51,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-20 17:34:53,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:34:53,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:34:53,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 1996 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-20 17:34:53,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:34:54,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:34:54,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:34:54,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290573260] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:54,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:34:54,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 23 [2022-03-20 17:34:54,016 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:34:54,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1086903131] [2022-03-20 17:34:54,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1086903131] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:34:54,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:34:54,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:34:54,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556755703] [2022-03-20 17:34:54,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:34:54,017 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 17:34:54,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:54,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 17:34:54,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2022-03-20 17:34:54,017 INFO L87 Difference]: Start difference. First operand 4726 states and 6711 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) [2022-03-20 17:34:56,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:34:56,052 INFO L93 Difference]: Finished difference Result 4743 states and 6729 transitions. [2022-03-20 17:34:56,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 17:34:56,053 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 [2022-03-20 17:34:56,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:34:56,063 INFO L225 Difference]: With dead ends: 4743 [2022-03-20 17:34:56,064 INFO L226 Difference]: Without dead ends: 4717 [2022-03-20 17:34:56,065 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2022-03-20 17:34:56,065 INFO L913 BasicCegarLoop]: 2365 mSDtfsCounter, 7 mSDsluCounter, 28027 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30392 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 [2022-03-20 17:34:56,065 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 30392 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 17:34:56,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4717 states. [2022-03-20 17:34:57,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4717 to 4717. [2022-03-20 17:34:57,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4717 states, 3147 states have (on average 1.3371464887194153) internal successors, (4208), 3237 states have internal predecessors, (4208), 1239 states have call successors, (1239), 319 states have call predecessors, (1239), 330 states have return successors, (1252), 1215 states have call predecessors, (1252), 1233 states have call successors, (1252) [2022-03-20 17:34:57,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4717 states to 4717 states and 6699 transitions. [2022-03-20 17:34:57,809 INFO L78 Accepts]: Start accepts. Automaton has 4717 states and 6699 transitions. Word has length 103 [2022-03-20 17:34:57,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:34:57,809 INFO L478 AbstractCegarLoop]: Abstraction has 4717 states and 6699 transitions. [2022-03-20 17:34:57,809 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) [2022-03-20 17:34:57,809 INFO L276 IsEmpty]: Start isEmpty. Operand 4717 states and 6699 transitions. [2022-03-20 17:34:57,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-20 17:34:57,811 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:34:57,811 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] [2022-03-20 17:34:57,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-03-20 17:34:58,029 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 [2022-03-20 17:34:58,030 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:34:58,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:34:58,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1012184443, now seen corresponding path program 1 times [2022-03-20 17:34:58,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:34:58,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1708181548] [2022-03-20 17:34:58,032 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:34:58,033 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:34:58,033 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:34:58,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1012184443, now seen corresponding path program 2 times [2022-03-20 17:34:58,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:34:58,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15847359] [2022-03-20 17:34:58,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:34:58,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:34:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:58,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:34:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:58,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:34:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:58,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:34:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:58,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:34:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:58,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:58,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:34:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:58,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:58,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:34:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:58,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:58,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:34:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:58,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 17:34:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:58,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:34:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:34:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:34:58,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:34:58,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15847359] [2022-03-20 17:34:58,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15847359] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:34:58,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767262218] [2022-03-20 17:34:58,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:34:58,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:34:58,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:34:58,526 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) [2022-03-20 17:34:58,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-20 17:35:00,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:35:00,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:35:00,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 2004 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-20 17:35:00,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:35:00,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:35:00,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:35:00,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767262218] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:00,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:35:00,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 23 [2022-03-20 17:35:00,854 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:35:00,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1708181548] [2022-03-20 17:35:00,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1708181548] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:00,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:35:00,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:35:00,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151540106] [2022-03-20 17:35:00,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:35:00,855 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 17:35:00,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:00,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 17:35:00,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2022-03-20 17:35:00,855 INFO L87 Difference]: Start difference. First operand 4717 states and 6699 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) [2022-03-20 17:35:02,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:35:02,816 INFO L93 Difference]: Finished difference Result 4734 states and 6717 transitions. [2022-03-20 17:35:02,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 17:35:02,816 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 [2022-03-20 17:35:02,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:35:02,828 INFO L225 Difference]: With dead ends: 4734 [2022-03-20 17:35:02,828 INFO L226 Difference]: Without dead ends: 4710 [2022-03-20 17:35:02,829 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 [2022-03-20 17:35:02,830 INFO L913 BasicCegarLoop]: 2353 mSDtfsCounter, 7 mSDsluCounter, 27896 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30249 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:35:02,830 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 30249 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 17:35:02,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4710 states. [2022-03-20 17:35:04,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4710 to 4710. [2022-03-20 17:35:04,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4710 states, 3143 states have (on average 1.3372573973910278) internal successors, (4203), 3233 states have internal predecessors, (4203), 1237 states have call successors, (1237), 318 states have call predecessors, (1237), 329 states have return successors, (1250), 1213 states have call predecessors, (1250), 1231 states have call successors, (1250) [2022-03-20 17:35:04,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4710 states to 4710 states and 6690 transitions. [2022-03-20 17:35:04,558 INFO L78 Accepts]: Start accepts. Automaton has 4710 states and 6690 transitions. Word has length 102 [2022-03-20 17:35:04,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:35:04,558 INFO L478 AbstractCegarLoop]: Abstraction has 4710 states and 6690 transitions. [2022-03-20 17:35:04,558 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) [2022-03-20 17:35:04,558 INFO L276 IsEmpty]: Start isEmpty. Operand 4710 states and 6690 transitions. [2022-03-20 17:35:04,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-03-20 17:35:04,560 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:35:04,560 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] [2022-03-20 17:35:04,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-03-20 17:35:04,775 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 [2022-03-20 17:35:04,775 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:35:04,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:35:04,776 INFO L85 PathProgramCache]: Analyzing trace with hash 824363753, now seen corresponding path program 1 times [2022-03-20 17:35:04,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:04,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [702202123] [2022-03-20 17:35:04,778 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:35:04,778 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:35:04,778 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:35:04,778 INFO L85 PathProgramCache]: Analyzing trace with hash 824363753, now seen corresponding path program 2 times [2022-03-20 17:35:04,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:35:04,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514436456] [2022-03-20 17:35:04,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:35:04,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:35:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:05,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:35:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:05,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:35:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:05,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:35:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:05,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:35:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:05,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:05,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:35:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:05,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:05,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 17:35:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:05,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:05,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 17:35:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:05,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:35:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:05,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 17:35:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:05,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:05,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:35:05,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:35:05,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514436456] [2022-03-20 17:35:05,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514436456] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:35:05,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738359850] [2022-03-20 17:35:05,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:35:05,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:35:05,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:35:05,255 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) [2022-03-20 17:35:05,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-20 17:35:07,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:35:07,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:35:07,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 2023 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-20 17:35:07,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:35:07,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:35:07,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:35:07,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738359850] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:07,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:35:07,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 23 [2022-03-20 17:35:07,624 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:35:07,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [702202123] [2022-03-20 17:35:07,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [702202123] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:07,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:35:07,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:35:07,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381280409] [2022-03-20 17:35:07,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:35:07,625 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 17:35:07,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:07,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 17:35:07,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2022-03-20 17:35:07,625 INFO L87 Difference]: Start difference. First operand 4710 states and 6690 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) [2022-03-20 17:35:09,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:35:09,609 INFO L93 Difference]: Finished difference Result 4727 states and 6708 transitions. [2022-03-20 17:35:09,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 17:35:09,609 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 [2022-03-20 17:35:09,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:35:09,621 INFO L225 Difference]: With dead ends: 4727 [2022-03-20 17:35:09,621 INFO L226 Difference]: Without dead ends: 4701 [2022-03-20 17:35:09,623 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2022-03-20 17:35:09,623 INFO L913 BasicCegarLoop]: 2344 mSDtfsCounter, 7 mSDsluCounter, 27801 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30145 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:35:09,623 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 30145 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 17:35:09,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4701 states. [2022-03-20 17:35:11,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4701 to 4701. [2022-03-20 17:35:11,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4701 states, 3138 states have (on average 1.3374760994263861) internal successors, (4197), 3228 states have internal predecessors, (4197), 1234 states have call successors, (1234), 317 states have call predecessors, (1234), 328 states have return successors, (1247), 1210 states have call predecessors, (1247), 1228 states have call successors, (1247) [2022-03-20 17:35:11,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4701 states to 4701 states and 6678 transitions. [2022-03-20 17:35:11,323 INFO L78 Accepts]: Start accepts. Automaton has 4701 states and 6678 transitions. Word has length 112 [2022-03-20 17:35:11,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:35:11,323 INFO L478 AbstractCegarLoop]: Abstraction has 4701 states and 6678 transitions. [2022-03-20 17:35:11,323 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) [2022-03-20 17:35:11,323 INFO L276 IsEmpty]: Start isEmpty. Operand 4701 states and 6678 transitions. [2022-03-20 17:35:11,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-03-20 17:35:11,325 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:35:11,325 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] [2022-03-20 17:35:11,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-03-20 17:35:11,536 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 [2022-03-20 17:35:11,536 INFO L403 AbstractCegarLoop]: === Iteration 71 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:35:11,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:35:11,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1579773890, now seen corresponding path program 1 times [2022-03-20 17:35:11,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:11,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1367447211] [2022-03-20 17:35:11,538 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:35:11,538 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:35:11,539 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:35:11,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1579773890, now seen corresponding path program 2 times [2022-03-20 17:35:11,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:35:11,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105745344] [2022-03-20 17:35:11,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:35:11,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:35:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:11,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:35:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:11,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:35:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:11,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:35:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:11,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:35:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:11,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:11,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:35:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:11,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:11,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-20 17:35:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:11,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:35:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:11,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:35:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:11,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 17:35:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:11,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:11,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:35:11,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:35:11,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105745344] [2022-03-20 17:35:11,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105745344] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:35:11,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780030921] [2022-03-20 17:35:11,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:35:11,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:35:11,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:35:11,984 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) [2022-03-20 17:35:11,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-20 17:35:14,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:35:14,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:35:14,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 1999 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-20 17:35:14,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:35:14,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:35:14,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:35:14,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780030921] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:14,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:35:14,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 23 [2022-03-20 17:35:14,258 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:35:14,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1367447211] [2022-03-20 17:35:14,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1367447211] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:14,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:35:14,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:35:14,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968106787] [2022-03-20 17:35:14,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:35:14,259 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 17:35:14,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:14,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 17:35:14,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2022-03-20 17:35:14,259 INFO L87 Difference]: Start difference. First operand 4701 states and 6678 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) [2022-03-20 17:35:16,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:35:16,255 INFO L93 Difference]: Finished difference Result 4718 states and 6696 transitions. [2022-03-20 17:35:16,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 17:35:16,255 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 [2022-03-20 17:35:16,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:35:16,267 INFO L225 Difference]: With dead ends: 4718 [2022-03-20 17:35:16,267 INFO L226 Difference]: Without dead ends: 4692 [2022-03-20 17:35:16,269 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 [2022-03-20 17:35:16,269 INFO L913 BasicCegarLoop]: 2332 mSDtfsCounter, 7 mSDsluCounter, 27670 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30002 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 17:35:16,269 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 30002 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 17:35:16,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4692 states. [2022-03-20 17:35:17,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4692 to 4692. [2022-03-20 17:35:17,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4692 states, 3132 states have (on average 1.3374840357598978) internal successors, (4189), 3222 states have internal predecessors, (4189), 1232 states have call successors, (1232), 316 states have call predecessors, (1232), 327 states have return successors, (1245), 1208 states have call predecessors, (1245), 1226 states have call successors, (1245) [2022-03-20 17:35:17,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 6666 transitions. [2022-03-20 17:35:17,982 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 6666 transitions. Word has length 106 [2022-03-20 17:35:17,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:35:17,983 INFO L478 AbstractCegarLoop]: Abstraction has 4692 states and 6666 transitions. [2022-03-20 17:35:17,983 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) [2022-03-20 17:35:17,983 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 6666 transitions. [2022-03-20 17:35:17,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-20 17:35:17,984 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:35:17,984 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:35:18,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-03-20 17:35:18,211 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 [2022-03-20 17:35:18,211 INFO L403 AbstractCegarLoop]: === Iteration 72 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:35:18,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:35:18,212 INFO L85 PathProgramCache]: Analyzing trace with hash -315181088, now seen corresponding path program 1 times [2022-03-20 17:35:18,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:18,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2088651995] [2022-03-20 17:35:18,214 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:35:18,214 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:35:18,214 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:35:18,214 INFO L85 PathProgramCache]: Analyzing trace with hash -315181088, now seen corresponding path program 2 times [2022-03-20 17:35:18,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:35:18,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361711556] [2022-03-20 17:35:18,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:35:18,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:35:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:18,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:35:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:18,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:35:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:18,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:35:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:18,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:35:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:18,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:18,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:35:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:18,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:18,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-20 17:35:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:18,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:35:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:18,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:35:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:18,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 17:35:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:18,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:18,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:35:18,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:35:18,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361711556] [2022-03-20 17:35:18,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361711556] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:35:18,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231423601] [2022-03-20 17:35:18,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:35:18,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:35:18,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:35:18,694 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) [2022-03-20 17:35:18,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-20 17:35:20,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:35:20,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:35:20,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-20 17:35:20,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:35:21,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:35:21,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:35:21,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231423601] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:21,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:35:21,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [11] total 24 [2022-03-20 17:35:21,081 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:35:21,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2088651995] [2022-03-20 17:35:21,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2088651995] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:21,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:35:21,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 17:35:21,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498452656] [2022-03-20 17:35:21,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:35:21,082 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 17:35:21,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:21,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 17:35:21,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2022-03-20 17:35:21,082 INFO L87 Difference]: Start difference. First operand 4692 states and 6666 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) [2022-03-20 17:35:23,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:35:23,136 INFO L93 Difference]: Finished difference Result 4709 states and 6684 transitions. [2022-03-20 17:35:23,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-20 17:35:23,136 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 [2022-03-20 17:35:23,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:35:23,146 INFO L225 Difference]: With dead ends: 4709 [2022-03-20 17:35:23,146 INFO L226 Difference]: Without dead ends: 4667 [2022-03-20 17:35:23,148 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2022-03-20 17:35:23,148 INFO L913 BasicCegarLoop]: 2315 mSDtfsCounter, 9 mSDsluCounter, 29777 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-03-20 17:35:23,148 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] [2022-03-20 17:35:23,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4667 states. [2022-03-20 17:35:24,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4667 to 4667. [2022-03-20 17:35:24,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4667 states, 3116 states have (on average 1.3388960205391527) internal successors, (4172), 3206 states have internal predecessors, (4172), 1227 states have call successors, (1227), 312 states have call predecessors, (1227), 323 states have return successors, (1240), 1203 states have call predecessors, (1240), 1221 states have call successors, (1240) [2022-03-20 17:35:24,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4667 states to 4667 states and 6639 transitions. [2022-03-20 17:35:24,853 INFO L78 Accepts]: Start accepts. Automaton has 4667 states and 6639 transitions. Word has length 102 [2022-03-20 17:35:24,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:35:24,853 INFO L478 AbstractCegarLoop]: Abstraction has 4667 states and 6639 transitions. [2022-03-20 17:35:24,853 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) [2022-03-20 17:35:24,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4667 states and 6639 transitions. [2022-03-20 17:35:24,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-20 17:35:24,854 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:35:24,854 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] [2022-03-20 17:35:24,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-03-20 17:35:25,072 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 [2022-03-20 17:35:25,072 INFO L403 AbstractCegarLoop]: === Iteration 73 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:35:25,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:35:25,073 INFO L85 PathProgramCache]: Analyzing trace with hash -711041418, now seen corresponding path program 1 times [2022-03-20 17:35:25,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:25,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1730479280] [2022-03-20 17:35:25,075 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:35:25,076 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:35:25,076 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:35:25,076 INFO L85 PathProgramCache]: Analyzing trace with hash -711041418, now seen corresponding path program 2 times [2022-03-20 17:35:25,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:35:25,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309339168] [2022-03-20 17:35:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:35:25,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:35:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:25,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:35:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:25,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:35:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:25,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:35:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:25,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:35:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:25,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:35:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:25,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:25,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:35:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:25,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 17:35:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:25,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:25,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 17:35:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:25,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 17:35:25,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:35:25,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309339168] [2022-03-20 17:35:25,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309339168] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:35:25,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323792050] [2022-03-20 17:35:25,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:35:25,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:35:25,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:35:25,494 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) [2022-03-20 17:35:25,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-03-20 17:35:27,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:35:27,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:35:27,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 17:35:27,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:35:27,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 17:35:27,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:35:27,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323792050] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:27,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:35:27,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-03-20 17:35:27,796 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:35:27,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1730479280] [2022-03-20 17:35:27,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1730479280] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:27,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:35:27,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:35:27,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533457649] [2022-03-20 17:35:27,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:35:27,797 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 17:35:27,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:27,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 17:35:27,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-03-20 17:35:27,798 INFO L87 Difference]: Start difference. First operand 4667 states and 6639 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) [2022-03-20 17:35:29,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:35:29,558 INFO L93 Difference]: Finished difference Result 4728 states and 6711 transitions. [2022-03-20 17:35:29,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 17:35:29,558 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 [2022-03-20 17:35:29,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:35:29,567 INFO L225 Difference]: With dead ends: 4728 [2022-03-20 17:35:29,568 INFO L226 Difference]: Without dead ends: 4683 [2022-03-20 17:35:29,568 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 [2022-03-20 17:35:29,569 INFO L913 BasicCegarLoop]: 2288 mSDtfsCounter, 20 mSDsluCounter, 13691 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 15979 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:35:29,569 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 15979 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:35:29,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4683 states. [2022-03-20 17:35:31,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4683 to 4667. [2022-03-20 17:35:31,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4667 states, 3116 states have (on average 1.3388960205391527) internal successors, (4172), 3206 states have internal predecessors, (4172), 1227 states have call successors, (1227), 312 states have call predecessors, (1227), 323 states have return successors, (1240), 1203 states have call predecessors, (1240), 1221 states have call successors, (1240) [2022-03-20 17:35:31,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4667 states to 4667 states and 6639 transitions. [2022-03-20 17:35:31,261 INFO L78 Accepts]: Start accepts. Automaton has 4667 states and 6639 transitions. Word has length 103 [2022-03-20 17:35:31,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:35:31,261 INFO L478 AbstractCegarLoop]: Abstraction has 4667 states and 6639 transitions. [2022-03-20 17:35:31,262 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) [2022-03-20 17:35:31,262 INFO L276 IsEmpty]: Start isEmpty. Operand 4667 states and 6639 transitions. [2022-03-20 17:35:31,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-20 17:35:31,263 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:35:31,263 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] [2022-03-20 17:35:31,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-03-20 17:35:31,479 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 [2022-03-20 17:35:31,479 INFO L403 AbstractCegarLoop]: === Iteration 74 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:35:31,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:35:31,479 INFO L85 PathProgramCache]: Analyzing trace with hash 413445426, now seen corresponding path program 1 times [2022-03-20 17:35:31,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:31,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [166062659] [2022-03-20 17:35:31,482 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:35:31,482 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:35:31,482 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:35:31,482 INFO L85 PathProgramCache]: Analyzing trace with hash 413445426, now seen corresponding path program 2 times [2022-03-20 17:35:31,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:35:31,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73480327] [2022-03-20 17:35:31,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:35:31,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:35:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:31,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:35:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:31,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:35:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:31,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:35:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:31,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:35:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:31,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:35:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:31,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:31,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:35:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:31,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:35:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:31,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:31,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 17:35:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:31,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 17:35:31,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:35:31,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73480327] [2022-03-20 17:35:31,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73480327] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:35:31,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127256202] [2022-03-20 17:35:31,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:35:31,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:35:31,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:35:31,923 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) [2022-03-20 17:35:31,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-03-20 17:35:34,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:35:34,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:35:34,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 1830 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 17:35:34,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:35:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 17:35:34,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:35:34,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127256202] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:34,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:35:34,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-03-20 17:35:34,292 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:35:34,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [166062659] [2022-03-20 17:35:34,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [166062659] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:34,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:35:34,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:35:34,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982949208] [2022-03-20 17:35:34,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:35:34,292 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 17:35:34,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:34,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 17:35:34,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-03-20 17:35:34,293 INFO L87 Difference]: Start difference. First operand 4667 states and 6639 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) [2022-03-20 17:35:36,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:35:36,099 INFO L93 Difference]: Finished difference Result 4728 states and 6711 transitions. [2022-03-20 17:35:36,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 17:35:36,099 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 [2022-03-20 17:35:36,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:35:36,109 INFO L225 Difference]: With dead ends: 4728 [2022-03-20 17:35:36,109 INFO L226 Difference]: Without dead ends: 4683 [2022-03-20 17:35:36,111 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-03-20 17:35:36,111 INFO L913 BasicCegarLoop]: 2288 mSDtfsCounter, 20 mSDsluCounter, 13691 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 15979 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:35:36,111 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 15979 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:35:36,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4683 states. [2022-03-20 17:35:37,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4683 to 4667. [2022-03-20 17:35:37,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4667 states, 3116 states have (on average 1.3388960205391527) internal successors, (4172), 3206 states have internal predecessors, (4172), 1227 states have call successors, (1227), 312 states have call predecessors, (1227), 323 states have return successors, (1240), 1203 states have call predecessors, (1240), 1221 states have call successors, (1240) [2022-03-20 17:35:37,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4667 states to 4667 states and 6639 transitions. [2022-03-20 17:35:37,824 INFO L78 Accepts]: Start accepts. Automaton has 4667 states and 6639 transitions. Word has length 102 [2022-03-20 17:35:37,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:35:37,824 INFO L478 AbstractCegarLoop]: Abstraction has 4667 states and 6639 transitions. [2022-03-20 17:35:37,824 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) [2022-03-20 17:35:37,824 INFO L276 IsEmpty]: Start isEmpty. Operand 4667 states and 6639 transitions. [2022-03-20 17:35:37,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-20 17:35:37,825 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:35:37,826 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] [2022-03-20 17:35:37,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-03-20 17:35:38,042 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 [2022-03-20 17:35:38,042 INFO L403 AbstractCegarLoop]: === Iteration 75 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:35:38,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:35:38,043 INFO L85 PathProgramCache]: Analyzing trace with hash -414372995, now seen corresponding path program 1 times [2022-03-20 17:35:38,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:38,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2103267350] [2022-03-20 17:35:38,045 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:35:38,045 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:35:38,045 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:35:38,045 INFO L85 PathProgramCache]: Analyzing trace with hash -414372995, now seen corresponding path program 2 times [2022-03-20 17:35:38,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:35:38,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592604378] [2022-03-20 17:35:38,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:35:38,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:35:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:38,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:35:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:38,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:35:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:38,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:35:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:38,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:35:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:38,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:38,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:38,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:35:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:38,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 17:35:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:38,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-20 17:35:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:38,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:35:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:38,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-20 17:35:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:38,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:38,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:35:38,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:35:38,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592604378] [2022-03-20 17:35:38,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592604378] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:35:38,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635379044] [2022-03-20 17:35:38,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:35:38,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:35:38,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:35:38,464 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) [2022-03-20 17:35:38,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-03-20 17:35:40,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:35:40,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:35:40,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 1945 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-20 17:35:40,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:35:40,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:35:40,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:35:40,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635379044] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:40,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:35:40,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-03-20 17:35:40,835 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:35:40,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2103267350] [2022-03-20 17:35:40,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2103267350] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:40,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:35:40,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 17:35:40,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407718393] [2022-03-20 17:35:40,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:35:40,835 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 17:35:40,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:40,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 17:35:40,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-03-20 17:35:40,836 INFO L87 Difference]: Start difference. First operand 4667 states and 6639 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) [2022-03-20 17:35:42,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:35:42,736 INFO L93 Difference]: Finished difference Result 4687 states and 6663 transitions. [2022-03-20 17:35:42,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 17:35:42,736 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 [2022-03-20 17:35:42,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:35:42,746 INFO L225 Difference]: With dead ends: 4687 [2022-03-20 17:35:42,746 INFO L226 Difference]: Without dead ends: 4630 [2022-03-20 17:35:42,748 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 [2022-03-20 17:35:42,748 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 [2022-03-20 17:35:42,748 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] [2022-03-20 17:35:42,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4630 states. [2022-03-20 17:35:44,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4630 to 4624. [2022-03-20 17:35:44,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4624 states, 3084 states have (on average 1.3394941634241244) internal successors, (4131), 3173 states have internal predecessors, (4131), 1223 states have call successors, (1223), 307 states have call predecessors, (1223), 316 states have return successors, (1234), 1197 states have call predecessors, (1234), 1217 states have call successors, (1234) [2022-03-20 17:35:44,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4624 states to 4624 states and 6588 transitions. [2022-03-20 17:35:44,425 INFO L78 Accepts]: Start accepts. Automaton has 4624 states and 6588 transitions. Word has length 103 [2022-03-20 17:35:44,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:35:44,425 INFO L478 AbstractCegarLoop]: Abstraction has 4624 states and 6588 transitions. [2022-03-20 17:35:44,425 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) [2022-03-20 17:35:44,425 INFO L276 IsEmpty]: Start isEmpty. Operand 4624 states and 6588 transitions. [2022-03-20 17:35:44,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-03-20 17:35:44,426 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:35:44,426 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:35:44,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-03-20 17:35:44,643 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 [2022-03-20 17:35:44,644 INFO L403 AbstractCegarLoop]: === Iteration 76 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:35:44,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:35:44,644 INFO L85 PathProgramCache]: Analyzing trace with hash -623723139, now seen corresponding path program 1 times [2022-03-20 17:35:44,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:44,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1747856055] [2022-03-20 17:35:44,649 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:35:44,649 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:35:44,649 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:35:44,649 INFO L85 PathProgramCache]: Analyzing trace with hash -623723139, now seen corresponding path program 2 times [2022-03-20 17:35:44,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:35:44,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95575072] [2022-03-20 17:35:44,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:35:44,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:35:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:44,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:35:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:44,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:35:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:44,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:35:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:44,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:35:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:45,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:35:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:45,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:45,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:35:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:45,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:35:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:45,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:45,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-20 17:35:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:45,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:45,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-20 17:35:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:45,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:45,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:35:45,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:35:45,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95575072] [2022-03-20 17:35:45,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95575072] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:35:45,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022148314] [2022-03-20 17:35:45,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:35:45,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:35:45,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:35:45,123 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) [2022-03-20 17:35:45,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-03-20 17:35:47,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:35:47,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:35:47,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 2003 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-20 17:35:47,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:35:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:35:47,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:35:47,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022148314] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:47,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:35:47,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-03-20 17:35:47,484 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:35:47,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1747856055] [2022-03-20 17:35:47,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1747856055] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:47,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:35:47,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:35:47,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219089907] [2022-03-20 17:35:47,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:35:47,485 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:35:47,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:47,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:35:47,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-03-20 17:35:47,485 INFO L87 Difference]: Start difference. First operand 4624 states and 6588 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) [2022-03-20 17:35:49,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:35:49,124 INFO L93 Difference]: Finished difference Result 4626 states and 6589 transitions. [2022-03-20 17:35:49,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:35:49,125 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 [2022-03-20 17:35:49,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:35:49,134 INFO L225 Difference]: With dead ends: 4626 [2022-03-20 17:35:49,134 INFO L226 Difference]: Without dead ends: 4542 [2022-03-20 17:35:49,135 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 [2022-03-20 17:35:49,135 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 [2022-03-20 17:35:49,135 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] [2022-03-20 17:35:49,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4542 states. [2022-03-20 17:35:50,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4542 to 4542. [2022-03-20 17:35:50,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4542 states, 3025 states have (on average 1.3428099173553718) internal successors, (4062), 3111 states have internal predecessors, (4062), 1210 states have call successors, (1210), 298 states have call predecessors, (1210), 306 states have return successors, (1221), 1184 states have call predecessors, (1221), 1205 states have call successors, (1221) [2022-03-20 17:35:50,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4542 states to 4542 states and 6493 transitions. [2022-03-20 17:35:50,802 INFO L78 Accepts]: Start accepts. Automaton has 4542 states and 6493 transitions. Word has length 107 [2022-03-20 17:35:50,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:35:50,802 INFO L478 AbstractCegarLoop]: Abstraction has 4542 states and 6493 transitions. [2022-03-20 17:35:50,802 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) [2022-03-20 17:35:50,802 INFO L276 IsEmpty]: Start isEmpty. Operand 4542 states and 6493 transitions. [2022-03-20 17:35:50,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-03-20 17:35:50,804 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:35:50,804 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] [2022-03-20 17:35:50,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-03-20 17:35:51,020 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 [2022-03-20 17:35:51,021 INFO L403 AbstractCegarLoop]: === Iteration 77 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:35:51,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:35:51,021 INFO L85 PathProgramCache]: Analyzing trace with hash 2063496998, now seen corresponding path program 1 times [2022-03-20 17:35:51,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:51,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [678240320] [2022-03-20 17:35:51,023 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:35:51,024 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:35:51,024 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:35:51,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2063496998, now seen corresponding path program 2 times [2022-03-20 17:35:51,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:35:51,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120322622] [2022-03-20 17:35:51,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:35:51,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:35:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:51,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:35:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:51,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:35:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:51,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:35:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:51,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:35:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:51,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:35:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:51,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:51,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:35:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:51,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-20 17:35:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:51,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:51,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 17:35:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:51,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:35:51,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:35:51,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120322622] [2022-03-20 17:35:51,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120322622] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:35:51,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251299996] [2022-03-20 17:35:51,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:35:51,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:35:51,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:35:51,433 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) [2022-03-20 17:35:51,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-03-20 17:35:53,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:35:53,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:35:53,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-20 17:35:53,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:35:53,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:35:53,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:35:53,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251299996] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:53,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:35:53,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-03-20 17:35:53,941 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:35:53,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [678240320] [2022-03-20 17:35:53,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [678240320] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:35:53,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:35:53,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 17:35:53,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105089325] [2022-03-20 17:35:53,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:35:53,942 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 17:35:53,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:53,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 17:35:53,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-03-20 17:35:53,942 INFO L87 Difference]: Start difference. First operand 4542 states and 6493 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) [2022-03-20 17:35:55,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:35:55,731 INFO L93 Difference]: Finished difference Result 4568 states and 6522 transitions. [2022-03-20 17:35:55,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 17:35:55,731 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 [2022-03-20 17:35:55,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:35:55,740 INFO L225 Difference]: With dead ends: 4568 [2022-03-20 17:35:55,741 INFO L226 Difference]: Without dead ends: 4541 [2022-03-20 17:35:55,741 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 [2022-03-20 17:35:55,742 INFO L913 BasicCegarLoop]: 2260 mSDtfsCounter, 20 mSDsluCounter, 15768 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 18028 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:35:55,742 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 18028 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:35:55,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4541 states. [2022-03-20 17:35:57,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4541 to 4541. [2022-03-20 17:35:57,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4541 states, 3024 states have (on average 1.3422619047619047) internal successors, (4059), 3110 states have internal predecessors, (4059), 1210 states have call successors, (1210), 298 states have call predecessors, (1210), 306 states have return successors, (1221), 1184 states have call predecessors, (1221), 1205 states have call successors, (1221) [2022-03-20 17:35:57,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4541 states to 4541 states and 6490 transitions. [2022-03-20 17:35:57,415 INFO L78 Accepts]: Start accepts. Automaton has 4541 states and 6490 transitions. Word has length 105 [2022-03-20 17:35:57,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:35:57,415 INFO L478 AbstractCegarLoop]: Abstraction has 4541 states and 6490 transitions. [2022-03-20 17:35:57,415 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) [2022-03-20 17:35:57,415 INFO L276 IsEmpty]: Start isEmpty. Operand 4541 states and 6490 transitions. [2022-03-20 17:35:57,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-03-20 17:35:57,416 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:35:57,417 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] [2022-03-20 17:35:57,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-03-20 17:35:57,631 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 [2022-03-20 17:35:57,631 INFO L403 AbstractCegarLoop]: === Iteration 78 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:35:57,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:35:57,632 INFO L85 PathProgramCache]: Analyzing trace with hash -922718710, now seen corresponding path program 1 times [2022-03-20 17:35:57,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:35:57,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1290284162] [2022-03-20 17:35:57,634 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:35:57,634 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:35:57,634 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:35:57,634 INFO L85 PathProgramCache]: Analyzing trace with hash -922718710, now seen corresponding path program 2 times [2022-03-20 17:35:57,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:35:57,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999024988] [2022-03-20 17:35:57,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:35:57,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:35:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:57,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:35:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:57,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:35:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:57,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:35:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:57,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:35:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:57,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:35:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:57,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:57,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 17:35:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:57,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:35:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:57,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:35:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:58,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 17:35:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:58,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 17:35:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:35:58,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 17:35:58,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:35:58,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999024988] [2022-03-20 17:35:58,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999024988] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:35:58,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680030254] [2022-03-20 17:35:58,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:35:58,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:35:58,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:35:58,011 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) [2022-03-20 17:35:58,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-03-20 17:36:00,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:36:00,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:36:00,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 1857 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 17:36:00,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:36:00,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 17:36:00,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:36:00,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680030254] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:36:00,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:36:00,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-03-20 17:36:00,585 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:36:00,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1290284162] [2022-03-20 17:36:00,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1290284162] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:36:00,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:36:00,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:36:00,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485387830] [2022-03-20 17:36:00,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:36:00,586 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 17:36:00,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:36:00,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 17:36:00,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-03-20 17:36:00,586 INFO L87 Difference]: Start difference. First operand 4541 states and 6490 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) [2022-03-20 17:36:02,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:36:02,264 INFO L93 Difference]: Finished difference Result 4598 states and 6558 transitions. [2022-03-20 17:36:02,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 17:36:02,264 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 [2022-03-20 17:36:02,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:36:02,273 INFO L225 Difference]: With dead ends: 4598 [2022-03-20 17:36:02,273 INFO L226 Difference]: Without dead ends: 4553 [2022-03-20 17:36:02,274 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 [2022-03-20 17:36:02,274 INFO L913 BasicCegarLoop]: 2245 mSDtfsCounter, 17 mSDsluCounter, 13440 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 15685 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:36:02,274 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 15685 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:36:02,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4553 states. [2022-03-20 17:36:03,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4553 to 4541. [2022-03-20 17:36:03,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4541 states, 3024 states have (on average 1.3422619047619047) internal successors, (4059), 3110 states have internal predecessors, (4059), 1210 states have call successors, (1210), 298 states have call predecessors, (1210), 306 states have return successors, (1221), 1184 states have call predecessors, (1221), 1205 states have call successors, (1221) [2022-03-20 17:36:03,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4541 states to 4541 states and 6490 transitions. [2022-03-20 17:36:03,935 INFO L78 Accepts]: Start accepts. Automaton has 4541 states and 6490 transitions. Word has length 107 [2022-03-20 17:36:03,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:36:03,935 INFO L478 AbstractCegarLoop]: Abstraction has 4541 states and 6490 transitions. [2022-03-20 17:36:03,935 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) [2022-03-20 17:36:03,935 INFO L276 IsEmpty]: Start isEmpty. Operand 4541 states and 6490 transitions. [2022-03-20 17:36:03,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-03-20 17:36:03,937 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:36:03,937 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] [2022-03-20 17:36:03,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-03-20 17:36:04,159 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 [2022-03-20 17:36:04,159 INFO L403 AbstractCegarLoop]: === Iteration 79 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:36:04,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:36:04,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1385353665, now seen corresponding path program 1 times [2022-03-20 17:36:04,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:36:04,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [760582092] [2022-03-20 17:36:04,162 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:36:04,162 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:36:04,162 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:36:04,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1385353665, now seen corresponding path program 2 times [2022-03-20 17:36:04,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:36:04,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084427850] [2022-03-20 17:36:04,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:36:04,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:36:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:04,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:36:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:04,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:36:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:04,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:36:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:04,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:36:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:04,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:36:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:04,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:04,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 17:36:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:04,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 17:36:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:04,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:04,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 17:36:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:04,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 17:36:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:04,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 17:36:04,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:36:04,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084427850] [2022-03-20 17:36:04,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084427850] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:36:04,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703838682] [2022-03-20 17:36:04,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:36:04,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:36:04,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:36:04,537 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) [2022-03-20 17:36:04,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-03-20 17:36:06,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:36:06,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:36:06,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 17:36:06,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:36:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 17:36:07,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:36:07,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703838682] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:36:07,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:36:07,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-03-20 17:36:07,061 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:36:07,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [760582092] [2022-03-20 17:36:07,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [760582092] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:36:07,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:36:07,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:36:07,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75728133] [2022-03-20 17:36:07,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:36:07,061 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 17:36:07,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:36:07,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 17:36:07,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-03-20 17:36:07,062 INFO L87 Difference]: Start difference. First operand 4541 states and 6490 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) [2022-03-20 17:36:08,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:36:08,801 INFO L93 Difference]: Finished difference Result 4603 states and 6564 transitions. [2022-03-20 17:36:08,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 17:36:08,801 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 [2022-03-20 17:36:08,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:36:08,810 INFO L225 Difference]: With dead ends: 4603 [2022-03-20 17:36:08,810 INFO L226 Difference]: Without dead ends: 4558 [2022-03-20 17:36:08,811 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 [2022-03-20 17:36:08,811 INFO L913 BasicCegarLoop]: 2245 mSDtfsCounter, 17 mSDsluCounter, 13440 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 15685 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:36:08,812 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 15685 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:36:08,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4558 states. [2022-03-20 17:36:10,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4558 to 4541. [2022-03-20 17:36:10,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4541 states, 3024 states have (on average 1.3422619047619047) internal successors, (4059), 3110 states have internal predecessors, (4059), 1210 states have call successors, (1210), 298 states have call predecessors, (1210), 306 states have return successors, (1221), 1184 states have call predecessors, (1221), 1205 states have call successors, (1221) [2022-03-20 17:36:10,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4541 states to 4541 states and 6490 transitions. [2022-03-20 17:36:10,484 INFO L78 Accepts]: Start accepts. Automaton has 4541 states and 6490 transitions. Word has length 106 [2022-03-20 17:36:10,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:36:10,484 INFO L478 AbstractCegarLoop]: Abstraction has 4541 states and 6490 transitions. [2022-03-20 17:36:10,484 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) [2022-03-20 17:36:10,484 INFO L276 IsEmpty]: Start isEmpty. Operand 4541 states and 6490 transitions. [2022-03-20 17:36:10,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-03-20 17:36:10,485 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:36:10,485 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] [2022-03-20 17:36:10,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-03-20 17:36:10,701 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 [2022-03-20 17:36:10,702 INFO L403 AbstractCegarLoop]: === Iteration 80 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:36:10,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:36:10,702 INFO L85 PathProgramCache]: Analyzing trace with hash -506154806, now seen corresponding path program 1 times [2022-03-20 17:36:10,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:36:10,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [270197897] [2022-03-20 17:36:10,704 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:36:10,704 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:36:10,704 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:36:10,704 INFO L85 PathProgramCache]: Analyzing trace with hash -506154806, now seen corresponding path program 2 times [2022-03-20 17:36:10,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:36:10,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869082680] [2022-03-20 17:36:10,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:36:10,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:36:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:10,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:36:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:10,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:36:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:10,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:36:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:11,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:36:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:11,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:36:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:11,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:11,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 17:36:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:11,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 17:36:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:11,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:11,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-20 17:36:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:11,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:11,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:36:11,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:36:11,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869082680] [2022-03-20 17:36:11,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869082680] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:36:11,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801905952] [2022-03-20 17:36:11,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:36:11,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:36:11,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:36:11,114 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) [2022-03-20 17:36:11,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-03-20 17:36:13,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:36:13,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:36:13,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-20 17:36:13,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:36:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:36:13,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:36:13,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801905952] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:36:13,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:36:13,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-03-20 17:36:13,669 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:36:13,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [270197897] [2022-03-20 17:36:13,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [270197897] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:36:13,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:36:13,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 17:36:13,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501943663] [2022-03-20 17:36:13,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:36:13,670 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 17:36:13,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:36:13,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 17:36:13,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-03-20 17:36:13,670 INFO L87 Difference]: Start difference. First operand 4541 states and 6490 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) [2022-03-20 17:36:15,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:36:15,601 INFO L93 Difference]: Finished difference Result 4568 states and 6521 transitions. [2022-03-20 17:36:15,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 17:36:15,602 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 [2022-03-20 17:36:15,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:36:15,610 INFO L225 Difference]: With dead ends: 4568 [2022-03-20 17:36:15,610 INFO L226 Difference]: Without dead ends: 4541 [2022-03-20 17:36:15,611 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 [2022-03-20 17:36:15,613 INFO L913 BasicCegarLoop]: 2257 mSDtfsCounter, 12 mSDsluCounter, 15752 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 18009 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:36:15,613 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 18009 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:36:15,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4541 states. [2022-03-20 17:36:17,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4541 to 4541. [2022-03-20 17:36:17,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4541 states, 3024 states have (on average 1.3412698412698412) internal successors, (4056), 3110 states have internal predecessors, (4056), 1210 states have call successors, (1210), 298 states have call predecessors, (1210), 306 states have return successors, (1221), 1184 states have call predecessors, (1221), 1205 states have call successors, (1221) [2022-03-20 17:36:17,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4541 states to 4541 states and 6487 transitions. [2022-03-20 17:36:17,314 INFO L78 Accepts]: Start accepts. Automaton has 4541 states and 6487 transitions. Word has length 107 [2022-03-20 17:36:17,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:36:17,315 INFO L478 AbstractCegarLoop]: Abstraction has 4541 states and 6487 transitions. [2022-03-20 17:36:17,315 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) [2022-03-20 17:36:17,315 INFO L276 IsEmpty]: Start isEmpty. Operand 4541 states and 6487 transitions. [2022-03-20 17:36:17,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-03-20 17:36:17,316 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:36:17,316 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] [2022-03-20 17:36:17,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-03-20 17:36:17,517 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 [2022-03-20 17:36:17,517 INFO L403 AbstractCegarLoop]: === Iteration 81 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:36:17,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:36:17,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1407795853, now seen corresponding path program 1 times [2022-03-20 17:36:17,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:36:17,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1456024391] [2022-03-20 17:36:17,520 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:36:17,520 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:36:17,520 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:36:17,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1407795853, now seen corresponding path program 2 times [2022-03-20 17:36:17,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:36:17,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798343925] [2022-03-20 17:36:17,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:36:17,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:36:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:17,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:36:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:17,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:36:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:17,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:36:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:17,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:36:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:17,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:36:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:17,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:17,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:36:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:17,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 17:36:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:17,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:36:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:17,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:17,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 17:36:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 17:36:17,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:36:17,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798343925] [2022-03-20 17:36:17,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798343925] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:36:17,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559789277] [2022-03-20 17:36:17,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:36:17,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:36:17,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:36:17,921 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) [2022-03-20 17:36:17,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-03-20 17:36:20,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:36:20,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:36:20,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-20 17:36:20,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:36:20,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 17:36:20,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:36:20,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559789277] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:36:20,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:36:20,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 20 [2022-03-20 17:36:20,485 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:36:20,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1456024391] [2022-03-20 17:36:20,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1456024391] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:36:20,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:36:20,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:36:20,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008625500] [2022-03-20 17:36:20,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:36:20,485 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 17:36:20,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:36:20,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 17:36:20,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2022-03-20 17:36:20,485 INFO L87 Difference]: Start difference. First operand 4541 states and 6487 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) [2022-03-20 17:36:22,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:36:22,281 INFO L93 Difference]: Finished difference Result 4598 states and 6555 transitions. [2022-03-20 17:36:22,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 17:36:22,282 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 [2022-03-20 17:36:22,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:36:22,290 INFO L225 Difference]: With dead ends: 4598 [2022-03-20 17:36:22,290 INFO L226 Difference]: Without dead ends: 4553 [2022-03-20 17:36:22,291 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2022-03-20 17:36:22,291 INFO L913 BasicCegarLoop]: 2247 mSDtfsCounter, 23 mSDsluCounter, 20181 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 22428 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:36:22,291 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 22428 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:36:22,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4553 states. [2022-03-20 17:36:23,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4553 to 4532. [2022-03-20 17:36:23,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4532 states, 3017 states have (on average 1.341730195558502) internal successors, (4048), 3103 states have internal predecessors, (4048), 1210 states have call successors, (1210), 298 states have call predecessors, (1210), 304 states have return successors, (1219), 1182 states have call predecessors, (1219), 1205 states have call successors, (1219) [2022-03-20 17:36:23,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4532 states to 4532 states and 6477 transitions. [2022-03-20 17:36:23,967 INFO L78 Accepts]: Start accepts. Automaton has 4532 states and 6477 transitions. Word has length 111 [2022-03-20 17:36:23,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:36:23,967 INFO L478 AbstractCegarLoop]: Abstraction has 4532 states and 6477 transitions. [2022-03-20 17:36:23,967 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) [2022-03-20 17:36:23,967 INFO L276 IsEmpty]: Start isEmpty. Operand 4532 states and 6477 transitions. [2022-03-20 17:36:23,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-03-20 17:36:23,968 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:36:23,968 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:36:23,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-03-20 17:36:24,174 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 [2022-03-20 17:36:24,174 INFO L403 AbstractCegarLoop]: === Iteration 82 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:36:24,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:36:24,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1045760415, now seen corresponding path program 1 times [2022-03-20 17:36:24,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:36:24,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [638729442] [2022-03-20 17:36:24,177 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:36:24,177 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:36:24,177 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:36:24,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1045760415, now seen corresponding path program 2 times [2022-03-20 17:36:24,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:36:24,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194838639] [2022-03-20 17:36:24,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:36:24,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:36:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:24,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:36:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:24,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:36:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:24,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:36:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:24,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:36:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:24,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:24,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:24,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:36:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:24,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 17:36:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:24,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-20 17:36:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:24,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:36:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:24,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 17:36:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:24,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 17:36:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:24,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:36:24,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:36:24,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194838639] [2022-03-20 17:36:24,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194838639] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:36:24,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257980183] [2022-03-20 17:36:24,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:36:24,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:36:24,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:36:24,588 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) [2022-03-20 17:36:24,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-03-20 17:36:26,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:36:26,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:36:26,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 1956 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 17:36:26,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:36:27,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:36:27,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:36:27,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257980183] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:36:27,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:36:27,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-03-20 17:36:27,135 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:36:27,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [638729442] [2022-03-20 17:36:27,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [638729442] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:36:27,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:36:27,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:36:27,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70846915] [2022-03-20 17:36:27,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:36:27,136 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:36:27,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:36:27,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:36:27,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-03-20 17:36:27,136 INFO L87 Difference]: Start difference. First operand 4532 states and 6477 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) [2022-03-20 17:36:28,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:36:28,830 INFO L93 Difference]: Finished difference Result 4561 states and 6509 transitions. [2022-03-20 17:36:28,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:36:28,831 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 [2022-03-20 17:36:28,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:36:28,839 INFO L225 Difference]: With dead ends: 4561 [2022-03-20 17:36:28,839 INFO L226 Difference]: Without dead ends: 4387 [2022-03-20 17:36:28,840 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 [2022-03-20 17:36:28,840 INFO L913 BasicCegarLoop]: 2223 mSDtfsCounter, 0 mSDsluCounter, 6665 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8888 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:36:28,840 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8888 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:36:28,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4387 states. [2022-03-20 17:36:30,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4387 to 4387. [2022-03-20 17:36:30,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4387 states, 2908 states have (on average 1.3445667125171938) internal successors, (3910), 2992 states have internal predecessors, (3910), 1187 states have call successors, (1187), 285 states have call predecessors, (1187), 291 states have return successors, (1196), 1159 states have call predecessors, (1196), 1182 states have call successors, (1196) [2022-03-20 17:36:30,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4387 states to 4387 states and 6293 transitions. [2022-03-20 17:36:30,458 INFO L78 Accepts]: Start accepts. Automaton has 4387 states and 6293 transitions. Word has length 107 [2022-03-20 17:36:30,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:36:30,458 INFO L478 AbstractCegarLoop]: Abstraction has 4387 states and 6293 transitions. [2022-03-20 17:36:30,458 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) [2022-03-20 17:36:30,458 INFO L276 IsEmpty]: Start isEmpty. Operand 4387 states and 6293 transitions. [2022-03-20 17:36:30,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-20 17:36:30,459 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:36:30,459 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] [2022-03-20 17:36:30,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-03-20 17:36:30,665 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 [2022-03-20 17:36:30,665 INFO L403 AbstractCegarLoop]: === Iteration 83 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:36:30,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:36:30,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1391259352, now seen corresponding path program 1 times [2022-03-20 17:36:30,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:36:30,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [962446021] [2022-03-20 17:36:30,673 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:36:30,673 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:36:30,673 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:36:30,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1391259352, now seen corresponding path program 2 times [2022-03-20 17:36:30,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:36:30,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891774566] [2022-03-20 17:36:30,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:36:30,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:36:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:30,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:36:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:30,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:36:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:30,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:36:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:30,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:36:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:31,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:36:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:31,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:31,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-20 17:36:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:31,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-20 17:36:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:31,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:31,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-20 17:36:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:31,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:31,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:36:31,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:36:31,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891774566] [2022-03-20 17:36:31,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891774566] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:36:31,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851925342] [2022-03-20 17:36:31,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:36:31,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:36:31,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:36:31,058 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) [2022-03-20 17:36:31,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-03-20 17:36:33,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:36:33,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:36:33,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 1886 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-20 17:36:33,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:36:33,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:36:33,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:36:33,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851925342] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:36:33,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:36:33,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-03-20 17:36:33,633 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:36:33,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [962446021] [2022-03-20 17:36:33,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [962446021] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:36:33,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:36:33,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 17:36:33,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856718417] [2022-03-20 17:36:33,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:36:33,634 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 17:36:33,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:36:33,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 17:36:33,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-03-20 17:36:33,634 INFO L87 Difference]: Start difference. First operand 4387 states and 6293 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) [2022-03-20 17:36:35,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:36:35,433 INFO L93 Difference]: Finished difference Result 4422 states and 6331 transitions. [2022-03-20 17:36:35,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 17:36:35,434 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 [2022-03-20 17:36:35,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:36:35,442 INFO L225 Difference]: With dead ends: 4422 [2022-03-20 17:36:35,442 INFO L226 Difference]: Without dead ends: 4396 [2022-03-20 17:36:35,443 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 [2022-03-20 17:36:35,443 INFO L913 BasicCegarLoop]: 2116 mSDtfsCounter, 5 mSDsluCounter, 14770 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 16886 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:36:35,443 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 16886 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:36:35,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4396 states. [2022-03-20 17:36:37,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4396 to 4387. [2022-03-20 17:36:37,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4387 states, 2908 states have (on average 1.343878954607978) internal successors, (3908), 2992 states have internal predecessors, (3908), 1187 states have call successors, (1187), 285 states have call predecessors, (1187), 291 states have return successors, (1196), 1159 states have call predecessors, (1196), 1182 states have call successors, (1196) [2022-03-20 17:36:37,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4387 states to 4387 states and 6291 transitions. [2022-03-20 17:36:37,180 INFO L78 Accepts]: Start accepts. Automaton has 4387 states and 6291 transitions. Word has length 109 [2022-03-20 17:36:37,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:36:37,180 INFO L478 AbstractCegarLoop]: Abstraction has 4387 states and 6291 transitions. [2022-03-20 17:36:37,180 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) [2022-03-20 17:36:37,180 INFO L276 IsEmpty]: Start isEmpty. Operand 4387 states and 6291 transitions. [2022-03-20 17:36:37,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-03-20 17:36:37,181 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:36:37,181 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] [2022-03-20 17:36:37,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-03-20 17:36:37,391 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 [2022-03-20 17:36:37,391 INFO L403 AbstractCegarLoop]: === Iteration 84 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:36:37,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:36:37,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1827743078, now seen corresponding path program 1 times [2022-03-20 17:36:37,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:36:37,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [545979257] [2022-03-20 17:36:37,394 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:36:37,394 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:36:37,394 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:36:37,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1827743078, now seen corresponding path program 2 times [2022-03-20 17:36:37,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:36:37,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218970400] [2022-03-20 17:36:37,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:36:37,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:36:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:37,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:36:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:37,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:36:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:37,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:36:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:37,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:36:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:37,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:36:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:37,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:37,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-20 17:36:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:37,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-20 17:36:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:37,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:37,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-20 17:36:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:37,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:37,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:36:37,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:36:37,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218970400] [2022-03-20 17:36:37,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218970400] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:36:37,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690184376] [2022-03-20 17:36:37,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:36:37,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:36:37,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:36:37,810 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) [2022-03-20 17:36:37,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-03-20 17:36:40,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:36:40,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:36:40,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-20 17:36:40,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:36:40,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:36:40,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:36:40,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690184376] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:36:40,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:36:40,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-03-20 17:36:40,442 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:36:40,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [545979257] [2022-03-20 17:36:40,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [545979257] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:36:40,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:36:40,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 17:36:40,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707229562] [2022-03-20 17:36:40,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:36:40,443 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 17:36:40,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:36:40,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 17:36:40,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-03-20 17:36:40,443 INFO L87 Difference]: Start difference. First operand 4387 states and 6291 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) [2022-03-20 17:36:42,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:36:42,233 INFO L93 Difference]: Finished difference Result 4423 states and 6330 transitions. [2022-03-20 17:36:42,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 17:36:42,233 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 [2022-03-20 17:36:42,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:36:42,241 INFO L225 Difference]: With dead ends: 4423 [2022-03-20 17:36:42,241 INFO L226 Difference]: Without dead ends: 4396 [2022-03-20 17:36:42,242 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 [2022-03-20 17:36:42,242 INFO L913 BasicCegarLoop]: 2110 mSDtfsCounter, 5 mSDsluCounter, 14732 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 16842 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:36:42,242 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 16842 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:36:42,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4396 states. [2022-03-20 17:36:43,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4396 to 4387. [2022-03-20 17:36:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4387 states, 2908 states have (on average 1.342847317744154) internal successors, (3905), 2992 states have internal predecessors, (3905), 1187 states have call successors, (1187), 285 states have call predecessors, (1187), 291 states have return successors, (1196), 1159 states have call predecessors, (1196), 1182 states have call successors, (1196) [2022-03-20 17:36:43,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4387 states to 4387 states and 6288 transitions. [2022-03-20 17:36:43,856 INFO L78 Accepts]: Start accepts. Automaton has 4387 states and 6288 transitions. Word has length 110 [2022-03-20 17:36:43,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:36:43,856 INFO L478 AbstractCegarLoop]: Abstraction has 4387 states and 6288 transitions. [2022-03-20 17:36:43,856 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) [2022-03-20 17:36:43,856 INFO L276 IsEmpty]: Start isEmpty. Operand 4387 states and 6288 transitions. [2022-03-20 17:36:43,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-20 17:36:43,858 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:36:43,858 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] [2022-03-20 17:36:43,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-03-20 17:36:44,083 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 [2022-03-20 17:36:44,083 INFO L403 AbstractCegarLoop]: === Iteration 85 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:36:44,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:36:44,084 INFO L85 PathProgramCache]: Analyzing trace with hash 86479510, now seen corresponding path program 1 times [2022-03-20 17:36:44,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:36:44,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1904480844] [2022-03-20 17:36:44,086 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:36:44,086 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:36:44,086 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:36:44,086 INFO L85 PathProgramCache]: Analyzing trace with hash 86479510, now seen corresponding path program 2 times [2022-03-20 17:36:44,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:36:44,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541114514] [2022-03-20 17:36:44,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:36:44,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:36:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:44,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:36:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:44,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:36:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:44,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:36:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:44,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:36:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:44,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:36:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:44,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:44,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-20 17:36:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:44,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:44,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:36:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:44,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:36:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:44,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:36:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:44,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:44,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-20 17:36:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:36:44,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:36:44,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541114514] [2022-03-20 17:36:44,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541114514] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:36:44,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073055385] [2022-03-20 17:36:44,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:36:44,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:36:44,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:36:44,505 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) [2022-03-20 17:36:44,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-03-20 17:36:47,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:36:47,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:36:47,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 2243 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 17:36:47,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:36:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:36:47,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:36:47,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073055385] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:36:47,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:36:47,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2022-03-20 17:36:47,149 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:36:47,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1904480844] [2022-03-20 17:36:47,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1904480844] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:36:47,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:36:47,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:36:47,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641006960] [2022-03-20 17:36:47,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:36:47,149 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 17:36:47,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:36:47,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 17:36:47,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-03-20 17:36:47,150 INFO L87 Difference]: Start difference. First operand 4387 states and 6288 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) [2022-03-20 17:36:48,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:36:48,821 INFO L93 Difference]: Finished difference Result 6846 states and 9879 transitions. [2022-03-20 17:36:48,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 17:36:48,821 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 [2022-03-20 17:36:48,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:36:48,830 INFO L225 Difference]: With dead ends: 6846 [2022-03-20 17:36:48,830 INFO L226 Difference]: Without dead ends: 4414 [2022-03-20 17:36:48,834 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 [2022-03-20 17:36:48,835 INFO L913 BasicCegarLoop]: 2096 mSDtfsCounter, 10 mSDsluCounter, 8376 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 10472 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:36:48,835 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 10472 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:36:48,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4414 states. [2022-03-20 17:36:50,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4414 to 4402. [2022-03-20 17:36:50,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4402 states, 2919 states have (on average 1.341555327166838) internal successors, (3916), 3003 states have internal predecessors, (3916), 1189 states have call successors, (1189), 285 states have call predecessors, (1189), 293 states have return successors, (1202), 1163 states have call predecessors, (1202), 1184 states have call successors, (1202) [2022-03-20 17:36:50,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 6307 transitions. [2022-03-20 17:36:50,459 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 6307 transitions. Word has length 116 [2022-03-20 17:36:50,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:36:50,459 INFO L478 AbstractCegarLoop]: Abstraction has 4402 states and 6307 transitions. [2022-03-20 17:36:50,459 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) [2022-03-20 17:36:50,460 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 6307 transitions. [2022-03-20 17:36:50,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-20 17:36:50,461 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:36:50,461 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] [2022-03-20 17:36:50,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-03-20 17:36:50,687 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 [2022-03-20 17:36:50,687 INFO L403 AbstractCegarLoop]: === Iteration 86 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:36:50,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:36:50,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1193384168, now seen corresponding path program 1 times [2022-03-20 17:36:50,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:36:50,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1667108130] [2022-03-20 17:36:50,690 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:36:50,690 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:36:50,690 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:36:50,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1193384168, now seen corresponding path program 2 times [2022-03-20 17:36:50,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:36:50,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338073842] [2022-03-20 17:36:50,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:36:50,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:36:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:50,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:36:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:50,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:36:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:50,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:36:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:50,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:36:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:50,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:36:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:50,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:51,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-20 17:36:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:51,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:51,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:36:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:51,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:36:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:51,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:36:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:51,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:51,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-20 17:36:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:36:51,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:36:51,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338073842] [2022-03-20 17:36:51,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338073842] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:36:51,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090302642] [2022-03-20 17:36:51,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:36:51,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:36:51,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:36:51,120 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) [2022-03-20 17:36:51,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-03-20 17:36:53,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:36:53,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:36:53,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 2240 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-20 17:36:53,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:36:53,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:36:53,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:36:53,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090302642] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:36:53,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:36:53,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2022-03-20 17:36:53,793 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:36:53,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1667108130] [2022-03-20 17:36:53,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1667108130] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:36:53,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:36:53,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 17:36:53,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171282363] [2022-03-20 17:36:53,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:36:53,793 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 17:36:53,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:36:53,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 17:36:53,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-03-20 17:36:53,794 INFO L87 Difference]: Start difference. First operand 4402 states and 6307 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) [2022-03-20 17:36:55,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:36:55,513 INFO L93 Difference]: Finished difference Result 4887 states and 6958 transitions. [2022-03-20 17:36:55,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 17:36:55,513 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 [2022-03-20 17:36:55,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:36:55,522 INFO L225 Difference]: With dead ends: 4887 [2022-03-20 17:36:55,522 INFO L226 Difference]: Without dead ends: 4505 [2022-03-20 17:36:55,523 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 [2022-03-20 17:36:55,523 INFO L913 BasicCegarLoop]: 2109 mSDtfsCounter, 30 mSDsluCounter, 14736 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 16845 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:36:55,523 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 16845 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:36:55,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4505 states. [2022-03-20 17:36:57,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4505 to 4435. [2022-03-20 17:36:57,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4435 states, 2945 states have (on average 1.3388794567062818) internal successors, (3943), 3029 states have internal predecessors, (3943), 1191 states have call successors, (1191), 285 states have call predecessors, (1191), 298 states have return successors, (1214), 1170 states have call predecessors, (1214), 1186 states have call successors, (1214) [2022-03-20 17:36:57,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4435 states to 4435 states and 6348 transitions. [2022-03-20 17:36:57,172 INFO L78 Accepts]: Start accepts. Automaton has 4435 states and 6348 transitions. Word has length 116 [2022-03-20 17:36:57,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:36:57,172 INFO L478 AbstractCegarLoop]: Abstraction has 4435 states and 6348 transitions. [2022-03-20 17:36:57,173 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) [2022-03-20 17:36:57,173 INFO L276 IsEmpty]: Start isEmpty. Operand 4435 states and 6348 transitions. [2022-03-20 17:36:57,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-03-20 17:36:57,174 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:36:57,174 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] [2022-03-20 17:36:57,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-03-20 17:36:57,399 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 [2022-03-20 17:36:57,399 INFO L403 AbstractCegarLoop]: === Iteration 87 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:36:57,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:36:57,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1243512838, now seen corresponding path program 1 times [2022-03-20 17:36:57,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:36:57,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1204019789] [2022-03-20 17:36:57,402 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:36:57,402 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:36:57,402 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:36:57,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1243512838, now seen corresponding path program 2 times [2022-03-20 17:36:57,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:36:57,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384824922] [2022-03-20 17:36:57,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:36:57,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:36:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:57,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:36:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:57,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:36:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:57,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:36:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:57,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:36:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:57,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:36:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:57,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:57,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-20 17:36:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:57,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:57,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:36:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:57,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:36:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:57,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:36:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:57,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:36:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:57,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-20 17:36:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:36:57,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:36:57,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:36:57,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384824922] [2022-03-20 17:36:57,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384824922] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:36:57,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335110057] [2022-03-20 17:36:57,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:36:57,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:36:57,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:36:57,782 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) [2022-03-20 17:36:57,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-03-20 17:37:00,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:37:00,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:37:00,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 2241 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-20 17:37:00,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:37:00,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:37:00,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:37:00,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335110057] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:37:00,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:37:00,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2022-03-20 17:37:00,502 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:37:00,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1204019789] [2022-03-20 17:37:00,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1204019789] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:37:00,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:37:00,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:37:00,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226852256] [2022-03-20 17:37:00,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:37:00,503 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:37:00,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:37:00,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:37:00,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-03-20 17:37:00,503 INFO L87 Difference]: Start difference. First operand 4435 states and 6348 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) [2022-03-20 17:37:02,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:37:02,157 INFO L93 Difference]: Finished difference Result 6918 states and 9966 transitions. [2022-03-20 17:37:02,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:37:02,157 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 [2022-03-20 17:37:02,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:37:02,167 INFO L225 Difference]: With dead ends: 6918 [2022-03-20 17:37:02,167 INFO L226 Difference]: Without dead ends: 4427 [2022-03-20 17:37:02,172 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-03-20 17:37:02,173 INFO L913 BasicCegarLoop]: 2109 mSDtfsCounter, 15 mSDsluCounter, 6308 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8417 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:37:02,173 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 8417 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:37:02,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4427 states. [2022-03-20 17:37:03,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4427 to 4427. [2022-03-20 17:37:03,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4427 states, 2937 states have (on average 1.3387810691181479) internal successors, (3932), 3021 states have internal predecessors, (3932), 1191 states have call successors, (1191), 285 states have call predecessors, (1191), 298 states have return successors, (1214), 1170 states have call predecessors, (1214), 1186 states have call successors, (1214) [2022-03-20 17:37:03,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4427 states to 4427 states and 6337 transitions. [2022-03-20 17:37:03,793 INFO L78 Accepts]: Start accepts. Automaton has 4427 states and 6337 transitions. Word has length 117 [2022-03-20 17:37:03,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:37:03,793 INFO L478 AbstractCegarLoop]: Abstraction has 4427 states and 6337 transitions. [2022-03-20 17:37:03,793 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) [2022-03-20 17:37:03,794 INFO L276 IsEmpty]: Start isEmpty. Operand 4427 states and 6337 transitions. [2022-03-20 17:37:03,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-03-20 17:37:03,795 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:37:03,795 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] [2022-03-20 17:37:03,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-03-20 17:37:04,011 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 [2022-03-20 17:37:04,011 INFO L403 AbstractCegarLoop]: === Iteration 88 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:37:04,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:37:04,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2027055602, now seen corresponding path program 1 times [2022-03-20 17:37:04,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:37:04,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2057865005] [2022-03-20 17:37:04,014 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:37:04,014 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:37:04,014 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:37:04,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2027055602, now seen corresponding path program 2 times [2022-03-20 17:37:04,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:37:04,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522859391] [2022-03-20 17:37:04,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:37:04,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:37:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:04,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:37:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:04,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:37:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:04,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:37:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:04,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:37:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:04,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:37:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:04,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:37:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:04,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-20 17:37:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:04,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:37:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:04,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-20 17:37:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:04,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:37:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:04,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 17:37:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:04,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:37:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:04,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:37:04,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:37:04,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522859391] [2022-03-20 17:37:04,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522859391] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:37:04,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:37:04,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:37:04,443 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:37:04,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2057865005] [2022-03-20 17:37:04,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2057865005] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:37:04,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:37:04,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:37:04,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386668630] [2022-03-20 17:37:04,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:37:04,444 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 17:37:04,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:37:04,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 17:37:04,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:37:04,444 INFO L87 Difference]: Start difference. First operand 4427 states and 6337 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) [2022-03-20 17:37:10,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:37:12,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:37:13,986 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:37:15,231 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 [] [2022-03-20 17:37:30,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:37:30,214 INFO L93 Difference]: Finished difference Result 6813 states and 9930 transitions. [2022-03-20 17:37:30,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 17:37:30,216 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 [2022-03-20 17:37:30,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:37:30,230 INFO L225 Difference]: With dead ends: 6813 [2022-03-20 17:37:30,230 INFO L226 Difference]: Without dead ends: 5764 [2022-03-20 17:37:30,234 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 [2022-03-20 17:37:30,235 INFO L913 BasicCegarLoop]: 1621 mSDtfsCounter, 2528 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 6055 mSolverCounterSat, 1837 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2674 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 7894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1837 IncrementalHoareTripleChecker+Valid, 6055 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:37:30,235 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2674 Valid, 1971 Invalid, 7894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1837 Valid, 6055 Invalid, 2 Unknown, 0 Unchecked, 22.2s Time] [2022-03-20 17:37:30,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5764 states. [2022-03-20 17:37:32,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5764 to 4427. [2022-03-20 17:37:32,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4427 states, 2937 states have (on average 1.3374191351719442) internal successors, (3928), 3021 states have internal predecessors, (3928), 1191 states have call successors, (1191), 285 states have call predecessors, (1191), 298 states have return successors, (1214), 1170 states have call predecessors, (1214), 1186 states have call successors, (1214) [2022-03-20 17:37:32,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4427 states to 4427 states and 6333 transitions. [2022-03-20 17:37:32,306 INFO L78 Accepts]: Start accepts. Automaton has 4427 states and 6333 transitions. Word has length 114 [2022-03-20 17:37:32,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:37:32,306 INFO L478 AbstractCegarLoop]: Abstraction has 4427 states and 6333 transitions. [2022-03-20 17:37:32,306 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) [2022-03-20 17:37:32,306 INFO L276 IsEmpty]: Start isEmpty. Operand 4427 states and 6333 transitions. [2022-03-20 17:37:32,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-03-20 17:37:32,307 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:37:32,307 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] [2022-03-20 17:37:32,307 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-03-20 17:37:32,307 INFO L403 AbstractCegarLoop]: === Iteration 89 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:37:32,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:37:32,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1807239528, now seen corresponding path program 1 times [2022-03-20 17:37:32,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:37:32,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1679265786] [2022-03-20 17:37:32,310 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:37:32,310 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:37:32,310 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:37:32,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1807239528, now seen corresponding path program 2 times [2022-03-20 17:37:32,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:37:32,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554749487] [2022-03-20 17:37:32,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:37:32,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:37:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:32,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:37:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:32,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:37:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:32,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:37:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:32,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:37:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:32,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:37:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:32,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:37:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:32,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-20 17:37:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:32,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 17:37:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:32,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:37:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:32,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-20 17:37:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:32,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:37:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:32,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:37:32,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:37:32,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554749487] [2022-03-20 17:37:32,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554749487] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:37:32,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255130045] [2022-03-20 17:37:32,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:37:32,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:37:32,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:37:32,713 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) [2022-03-20 17:37:32,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-03-20 17:37:35,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:37:35,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:37:35,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 1909 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-20 17:37:35,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:37:35,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:37:35,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:37:35,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255130045] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:37:35,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:37:35,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-03-20 17:37:35,475 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:37:35,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1679265786] [2022-03-20 17:37:35,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1679265786] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:37:35,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:37:35,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 17:37:35,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011682673] [2022-03-20 17:37:35,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:37:35,476 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 17:37:35,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:37:35,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 17:37:35,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-03-20 17:37:35,476 INFO L87 Difference]: Start difference. First operand 4427 states and 6333 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) [2022-03-20 17:37:37,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:37:37,732 INFO L93 Difference]: Finished difference Result 4471 states and 6380 transitions. [2022-03-20 17:37:37,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 17:37:37,733 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 [2022-03-20 17:37:37,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:37:37,742 INFO L225 Difference]: With dead ends: 4471 [2022-03-20 17:37:37,742 INFO L226 Difference]: Without dead ends: 4422 [2022-03-20 17:37:37,743 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 [2022-03-20 17:37:37,743 INFO L913 BasicCegarLoop]: 2108 mSDtfsCounter, 46 mSDsluCounter, 14670 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 16778 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:37:37,743 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 16778 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:37:37,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4422 states. [2022-03-20 17:37:39,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4422 to 4405. [2022-03-20 17:37:39,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4405 states, 2919 states have (on average 1.3360739979445015) internal successors, (3900), 3003 states have internal predecessors, (3900), 1187 states have call successors, (1187), 285 states have call predecessors, (1187), 298 states have return successors, (1210), 1166 states have call predecessors, (1210), 1182 states have call successors, (1210) [2022-03-20 17:37:39,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4405 states to 4405 states and 6297 transitions. [2022-03-20 17:37:39,792 INFO L78 Accepts]: Start accepts. Automaton has 4405 states and 6297 transitions. Word has length 113 [2022-03-20 17:37:39,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:37:39,792 INFO L478 AbstractCegarLoop]: Abstraction has 4405 states and 6297 transitions. [2022-03-20 17:37:39,793 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) [2022-03-20 17:37:39,793 INFO L276 IsEmpty]: Start isEmpty. Operand 4405 states and 6297 transitions. [2022-03-20 17:37:39,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-03-20 17:37:39,794 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:37:39,794 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:37:39,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-03-20 17:37:39,995 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 [2022-03-20 17:37:39,995 INFO L403 AbstractCegarLoop]: === Iteration 90 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:37:39,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:37:39,996 INFO L85 PathProgramCache]: Analyzing trace with hash -515371403, now seen corresponding path program 1 times [2022-03-20 17:37:39,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:37:39,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1309853496] [2022-03-20 17:37:39,998 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:37:39,998 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:37:39,998 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:37:39,998 INFO L85 PathProgramCache]: Analyzing trace with hash -515371403, now seen corresponding path program 2 times [2022-03-20 17:37:39,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:37:39,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685391339] [2022-03-20 17:37:39,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:37:39,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:37:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:40,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:37:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:40,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:37:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:40,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:37:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:40,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:37:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:40,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:37:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:40,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:37:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:40,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-20 17:37:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:40,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 17:37:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:40,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:37:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:40,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-20 17:37:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:40,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:37:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:40,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:37:40,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:37:40,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685391339] [2022-03-20 17:37:40,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685391339] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:37:40,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003200454] [2022-03-20 17:37:40,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:37:40,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:37:40,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:37:40,365 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) [2022-03-20 17:37:40,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-03-20 17:37:42,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:37:42,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:37:42,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 1888 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-20 17:37:42,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:37:43,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:37:43,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:37:43,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003200454] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:37:43,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:37:43,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-03-20 17:37:43,127 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:37:43,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1309853496] [2022-03-20 17:37:43,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1309853496] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:37:43,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:37:43,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 17:37:43,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079161807] [2022-03-20 17:37:43,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:37:43,128 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 17:37:43,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:37:43,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 17:37:43,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-03-20 17:37:43,128 INFO L87 Difference]: Start difference. First operand 4405 states and 6297 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) [2022-03-20 17:37:45,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:37:45,325 INFO L93 Difference]: Finished difference Result 4433 states and 6328 transitions. [2022-03-20 17:37:45,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 17:37:45,326 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 [2022-03-20 17:37:45,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:37:45,334 INFO L225 Difference]: With dead ends: 4433 [2022-03-20 17:37:45,334 INFO L226 Difference]: Without dead ends: 4300 [2022-03-20 17:37:45,335 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 [2022-03-20 17:37:45,336 INFO L913 BasicCegarLoop]: 2109 mSDtfsCounter, 33 mSDsluCounter, 14694 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 16803 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:37:45,336 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 16803 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:37:45,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4300 states. [2022-03-20 17:37:47,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4300 to 4294. [2022-03-20 17:37:47,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4294 states, 2853 states have (on average 1.3357868909919384) internal successors, (3811), 2934 states have internal predecessors, (3811), 1147 states have call successors, (1147), 281 states have call predecessors, (1147), 293 states have return successors, (1169), 1125 states have call predecessors, (1169), 1142 states have call successors, (1169) [2022-03-20 17:37:47,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4294 states to 4294 states and 6127 transitions. [2022-03-20 17:37:47,309 INFO L78 Accepts]: Start accepts. Automaton has 4294 states and 6127 transitions. Word has length 113 [2022-03-20 17:37:47,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:37:47,309 INFO L478 AbstractCegarLoop]: Abstraction has 4294 states and 6127 transitions. [2022-03-20 17:37:47,310 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) [2022-03-20 17:37:47,310 INFO L276 IsEmpty]: Start isEmpty. Operand 4294 states and 6127 transitions. [2022-03-20 17:37:47,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-03-20 17:37:47,311 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:37:47,311 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] [2022-03-20 17:37:47,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-03-20 17:37:47,524 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 [2022-03-20 17:37:47,525 INFO L403 AbstractCegarLoop]: === Iteration 91 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:37:47,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:37:47,525 INFO L85 PathProgramCache]: Analyzing trace with hash 511408064, now seen corresponding path program 1 times [2022-03-20 17:37:47,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:37:47,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [94716229] [2022-03-20 17:37:47,527 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:37:47,527 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:37:47,528 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:37:47,528 INFO L85 PathProgramCache]: Analyzing trace with hash 511408064, now seen corresponding path program 2 times [2022-03-20 17:37:47,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:37:47,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631904357] [2022-03-20 17:37:47,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:37:47,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:37:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:47,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:37:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:47,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:37:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:47,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:37:47,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:47,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:37:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:47,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:37:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:47,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:37:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:47,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-20 17:37:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:47,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:37:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:47,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-20 17:37:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:47,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:37:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:47,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-20 17:37:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:47,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:37:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:47,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:37:47,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:37:47,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631904357] [2022-03-20 17:37:47,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631904357] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:37:47,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503268879] [2022-03-20 17:37:47,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:37:47,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:37:47,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:37:47,923 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) [2022-03-20 17:37:47,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-03-20 17:37:50,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:37:50,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:37:50,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 1966 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-20 17:37:50,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:37:50,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:37:50,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:37:50,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503268879] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:37:50,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:37:50,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-03-20 17:37:50,648 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:37:50,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [94716229] [2022-03-20 17:37:50,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [94716229] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:37:50,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:37:50,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:37:50,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988893523] [2022-03-20 17:37:50,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:37:50,648 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:37:50,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:37:50,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:37:50,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-20 17:37:50,649 INFO L87 Difference]: Start difference. First operand 4294 states and 6127 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) [2022-03-20 17:37:52,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:37:52,668 INFO L93 Difference]: Finished difference Result 5415 states and 7670 transitions. [2022-03-20 17:37:52,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:37:52,669 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 [2022-03-20 17:37:52,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:37:52,679 INFO L225 Difference]: With dead ends: 5415 [2022-03-20 17:37:52,679 INFO L226 Difference]: Without dead ends: 4366 [2022-03-20 17:37:52,682 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 [2022-03-20 17:37:52,682 INFO L913 BasicCegarLoop]: 2107 mSDtfsCounter, 22 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 4192 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 [2022-03-20 17:37:52,682 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 4192 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:37:52,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4366 states. [2022-03-20 17:37:54,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4366 to 4302. [2022-03-20 17:37:54,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4302 states, 2861 states have (on average 1.3348479552603985) internal successors, (3819), 2942 states have internal predecessors, (3819), 1147 states have call successors, (1147), 281 states have call predecessors, (1147), 293 states have return successors, (1169), 1125 states have call predecessors, (1169), 1142 states have call successors, (1169) [2022-03-20 17:37:54,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4302 states to 4302 states and 6135 transitions. [2022-03-20 17:37:54,668 INFO L78 Accepts]: Start accepts. Automaton has 4302 states and 6135 transitions. Word has length 115 [2022-03-20 17:37:54,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:37:54,668 INFO L478 AbstractCegarLoop]: Abstraction has 4302 states and 6135 transitions. [2022-03-20 17:37:54,668 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) [2022-03-20 17:37:54,668 INFO L276 IsEmpty]: Start isEmpty. Operand 4302 states and 6135 transitions. [2022-03-20 17:37:54,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-03-20 17:37:54,669 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:37:54,669 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:37:54,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-03-20 17:37:54,886 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 [2022-03-20 17:37:54,886 INFO L403 AbstractCegarLoop]: === Iteration 92 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:37:54,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:37:54,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1433703425, now seen corresponding path program 1 times [2022-03-20 17:37:54,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:37:54,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1741817697] [2022-03-20 17:37:54,889 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:37:54,889 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:37:54,889 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:37:54,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1433703425, now seen corresponding path program 2 times [2022-03-20 17:37:54,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:37:54,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364067645] [2022-03-20 17:37:54,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:37:54,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:37:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:55,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:37:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:55,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:37:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:55,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:37:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:55,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:37:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:55,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:37:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:55,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:37:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:55,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-20 17:37:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:55,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:37:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:55,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:37:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:55,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:37:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:55,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:37:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:55,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:37:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:55,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-20 17:37:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:55,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-20 17:37:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:37:55,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:37:55,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:37:55,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364067645] [2022-03-20 17:37:55,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364067645] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:37:55,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775595629] [2022-03-20 17:37:55,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:37:55,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:37:55,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:37:55,404 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) [2022-03-20 17:37:55,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-03-20 17:37:58,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:37:58,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:37:58,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 2253 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-20 17:37:58,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:37:58,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:37:58,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:37:58,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775595629] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:37:58,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:37:58,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-03-20 17:37:58,390 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:37:58,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1741817697] [2022-03-20 17:37:58,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1741817697] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:37:58,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:37:58,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 17:37:58,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783746415] [2022-03-20 17:37:58,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:37:58,390 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 17:37:58,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:37:58,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 17:37:58,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-03-20 17:37:58,391 INFO L87 Difference]: Start difference. First operand 4302 states and 6135 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) [2022-03-20 17:38:01,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:38:01,665 INFO L93 Difference]: Finished difference Result 6761 states and 9720 transitions. [2022-03-20 17:38:01,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 17:38:01,666 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 [2022-03-20 17:38:01,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:38:01,675 INFO L225 Difference]: With dead ends: 6761 [2022-03-20 17:38:01,675 INFO L226 Difference]: Without dead ends: 4274 [2022-03-20 17:38:01,679 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 [2022-03-20 17:38:01,680 INFO L913 BasicCegarLoop]: 2093 mSDtfsCounter, 2017 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2018 SdHoareTripleChecker+Valid, 3400 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-20 17:38:01,680 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2018 Valid, 3400 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-20 17:38:01,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4274 states. [2022-03-20 17:38:03,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4274 to 4274. [2022-03-20 17:38:03,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4274 states, 2840 states have (on average 1.3355633802816902) internal successors, (3793), 2920 states have internal predecessors, (3793), 1144 states have call successors, (1144), 280 states have call predecessors, (1144), 289 states have return successors, (1160), 1120 states have call predecessors, (1160), 1139 states have call successors, (1160) [2022-03-20 17:38:03,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4274 states to 4274 states and 6097 transitions. [2022-03-20 17:38:03,649 INFO L78 Accepts]: Start accepts. Automaton has 4274 states and 6097 transitions. Word has length 121 [2022-03-20 17:38:03,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:38:03,650 INFO L478 AbstractCegarLoop]: Abstraction has 4274 states and 6097 transitions. [2022-03-20 17:38:03,650 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) [2022-03-20 17:38:03,650 INFO L276 IsEmpty]: Start isEmpty. Operand 4274 states and 6097 transitions. [2022-03-20 17:38:03,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-03-20 17:38:03,651 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:38:03,651 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] [2022-03-20 17:38:03,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-03-20 17:38:03,871 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 [2022-03-20 17:38:03,871 INFO L403 AbstractCegarLoop]: === Iteration 93 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:38:03,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:38:03,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1717758171, now seen corresponding path program 1 times [2022-03-20 17:38:03,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:38:03,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1882682243] [2022-03-20 17:38:03,874 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:38:03,874 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:38:03,874 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:38:03,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1717758171, now seen corresponding path program 2 times [2022-03-20 17:38:03,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:38:03,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552261015] [2022-03-20 17:38:03,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:38:03,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:38:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:04,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:38:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:04,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:38:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:04,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:38:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:04,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:38:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:04,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:38:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:04,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:38:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:04,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:38:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:04,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 17:38:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:04,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-20 17:38:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:04,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:38:04,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:04,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-20 17:38:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:04,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:38:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:04,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:38:04,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:38:04,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552261015] [2022-03-20 17:38:04,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552261015] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:38:04,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:38:04,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-20 17:38:04,522 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:38:04,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1882682243] [2022-03-20 17:38:04,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1882682243] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:38:04,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:38:04,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-20 17:38:04,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73522527] [2022-03-20 17:38:04,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:38:04,522 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 17:38:04,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:38:04,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 17:38:04,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-03-20 17:38:04,523 INFO L87 Difference]: Start difference. First operand 4274 states and 6097 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) [2022-03-20 17:38:12,607 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:38:14,626 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:38:16,026 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:38:18,046 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:38:20,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:38:21,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:38:23,713 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:38:46,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:38:46,382 INFO L93 Difference]: Finished difference Result 5547 states and 8102 transitions. [2022-03-20 17:38:46,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 17:38:46,383 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 [2022-03-20 17:38:46,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:38:46,394 INFO L225 Difference]: With dead ends: 5547 [2022-03-20 17:38:46,394 INFO L226 Difference]: Without dead ends: 5456 [2022-03-20 17:38:46,395 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 [2022-03-20 17:38:46,395 INFO L913 BasicCegarLoop]: 1647 mSDtfsCounter, 3988 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 16839 mSolverCounterSat, 2893 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4141 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 19736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2893 IncrementalHoareTripleChecker+Valid, 16839 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:38:46,395 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4141 Valid, 2770 Invalid, 19736 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2893 Valid, 16839 Invalid, 4 Unknown, 0 Unchecked, 38.1s Time] [2022-03-20 17:38:46,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5456 states. [2022-03-20 17:38:48,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5456 to 4274. [2022-03-20 17:38:48,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4274 states, 2840 states have (on average 1.3352112676056338) internal successors, (3792), 2920 states have internal predecessors, (3792), 1144 states have call successors, (1144), 280 states have call predecessors, (1144), 289 states have return successors, (1160), 1120 states have call predecessors, (1160), 1139 states have call successors, (1160) [2022-03-20 17:38:48,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4274 states to 4274 states and 6096 transitions. [2022-03-20 17:38:48,790 INFO L78 Accepts]: Start accepts. Automaton has 4274 states and 6096 transitions. Word has length 117 [2022-03-20 17:38:48,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:38:48,790 INFO L478 AbstractCegarLoop]: Abstraction has 4274 states and 6096 transitions. [2022-03-20 17:38:48,791 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) [2022-03-20 17:38:48,791 INFO L276 IsEmpty]: Start isEmpty. Operand 4274 states and 6096 transitions. [2022-03-20 17:38:48,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-03-20 17:38:48,792 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:38:48,792 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:38:48,792 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-03-20 17:38:48,792 INFO L403 AbstractCegarLoop]: === Iteration 94 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:38:48,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:38:48,792 INFO L85 PathProgramCache]: Analyzing trace with hash -91539494, now seen corresponding path program 1 times [2022-03-20 17:38:48,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:38:48,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1607957883] [2022-03-20 17:38:48,794 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:38:48,794 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:38:48,794 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:38:48,795 INFO L85 PathProgramCache]: Analyzing trace with hash -91539494, now seen corresponding path program 2 times [2022-03-20 17:38:48,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:38:48,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767125647] [2022-03-20 17:38:48,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:38:48,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:38:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:49,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:38:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:49,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:38:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:49,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:38:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:49,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:38:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:49,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:38:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:49,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:38:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:49,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-20 17:38:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:49,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:38:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:49,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:38:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:49,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:38:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:49,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:38:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:49,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:38:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:49,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-20 17:38:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:49,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-20 17:38:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:38:49,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:38:49,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:38:49,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767125647] [2022-03-20 17:38:49,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767125647] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:38:49,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638403098] [2022-03-20 17:38:49,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:38:49,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:38:49,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:38:49,302 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) [2022-03-20 17:38:49,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-03-20 17:38:51,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:38:51,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:38:51,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 2258 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 17:38:52,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:38:52,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:38:52,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:38:52,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638403098] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:38:52,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:38:52,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 17 [2022-03-20 17:38:52,169 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:38:52,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1607957883] [2022-03-20 17:38:52,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1607957883] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:38:52,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:38:52,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:38:52,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135852270] [2022-03-20 17:38:52,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:38:52,170 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:38:52,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:38:52,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:38:52,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-03-20 17:38:52,170 INFO L87 Difference]: Start difference. First operand 4274 states and 6096 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) [2022-03-20 17:38:55,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:38:57,293 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:39:02,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:39:02,532 INFO L93 Difference]: Finished difference Result 5534 states and 7920 transitions. [2022-03-20 17:39:02,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 17:39:02,532 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 [2022-03-20 17:39:02,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:39:02,539 INFO L225 Difference]: With dead ends: 5534 [2022-03-20 17:39:02,539 INFO L226 Difference]: Without dead ends: 3072 [2022-03-20 17:39:02,544 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-03-20 17:39:02,545 INFO L913 BasicCegarLoop]: 1755 mSDtfsCounter, 1202 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 4094 mSolverCounterSat, 393 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 2229 SdHoareTripleChecker+Invalid, 4488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 4094 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-03-20 17:39:02,545 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 2229 Invalid, 4488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 4094 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2022-03-20 17:39:02,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2022-03-20 17:39:03,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 1869. [2022-03-20 17:39:03,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1262 states have (on average 1.2939778129952457) internal successors, (1633), 1296 states have internal predecessors, (1633), 463 states have call successors, (463), 138 states have call predecessors, (463), 143 states have return successors, (467), 455 states have call predecessors, (467), 459 states have call successors, (467) [2022-03-20 17:39:03,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2563 transitions. [2022-03-20 17:39:03,513 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2563 transitions. Word has length 123 [2022-03-20 17:39:03,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:39:03,513 INFO L478 AbstractCegarLoop]: Abstraction has 1869 states and 2563 transitions. [2022-03-20 17:39:03,513 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) [2022-03-20 17:39:03,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2563 transitions. [2022-03-20 17:39:03,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-03-20 17:39:03,514 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:39:03,514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:39:03,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-03-20 17:39:03,727 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 [2022-03-20 17:39:03,727 INFO L403 AbstractCegarLoop]: === Iteration 95 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:39:03,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:39:03,728 INFO L85 PathProgramCache]: Analyzing trace with hash 625918942, now seen corresponding path program 1 times [2022-03-20 17:39:03,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:39:03,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1782155644] [2022-03-20 17:39:03,730 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:39:03,730 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:39:03,730 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:39:03,731 INFO L85 PathProgramCache]: Analyzing trace with hash 625918942, now seen corresponding path program 2 times [2022-03-20 17:39:03,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:39:03,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368174528] [2022-03-20 17:39:03,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:39:03,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:39:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:03,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:39:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:03,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:39:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:03,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:39:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:04,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:39:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:04,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:39:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:04,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:04,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-20 17:39:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:04,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 17:39:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:04,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-20 17:39:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:04,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:04,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-20 17:39:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:04,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:04,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:39:04,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:39:04,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368174528] [2022-03-20 17:39:04,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368174528] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:39:04,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133276038] [2022-03-20 17:39:04,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:39:04,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:39:04,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:39:04,135 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) [2022-03-20 17:39:04,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-03-20 17:39:06,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:39:06,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:39:06,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 1963 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-20 17:39:06,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:39:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:39:06,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:39:06,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133276038] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:39:06,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:39:06,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-03-20 17:39:06,999 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:39:06,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1782155644] [2022-03-20 17:39:06,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1782155644] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:39:06,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:39:06,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:39:06,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762323356] [2022-03-20 17:39:06,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:39:06,999 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 17:39:06,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:39:06,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 17:39:06,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-20 17:39:07,000 INFO L87 Difference]: Start difference. First operand 1869 states and 2563 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) [2022-03-20 17:39:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:39:08,006 INFO L93 Difference]: Finished difference Result 1934 states and 2632 transitions. [2022-03-20 17:39:08,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 17:39:08,007 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 [2022-03-20 17:39:08,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:39:08,011 INFO L225 Difference]: With dead ends: 1934 [2022-03-20 17:39:08,011 INFO L226 Difference]: Without dead ends: 1860 [2022-03-20 17:39:08,011 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 [2022-03-20 17:39:08,011 INFO L913 BasicCegarLoop]: 2100 mSDtfsCounter, 4 mSDsluCounter, 8373 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10473 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:39:08,012 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 10473 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:39:08,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2022-03-20 17:39:08,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1857. [2022-03-20 17:39:08,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1252 states have (on average 1.293929712460064) internal successors, (1620), 1286 states have internal predecessors, (1620), 461 states have call successors, (461), 138 states have call predecessors, (461), 143 states have return successors, (465), 453 states have call predecessors, (465), 457 states have call successors, (465) [2022-03-20 17:39:08,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 2546 transitions. [2022-03-20 17:39:08,972 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 2546 transitions. Word has length 119 [2022-03-20 17:39:08,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:39:08,972 INFO L478 AbstractCegarLoop]: Abstraction has 1857 states and 2546 transitions. [2022-03-20 17:39:08,972 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) [2022-03-20 17:39:08,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 2546 transitions. [2022-03-20 17:39:08,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-03-20 17:39:08,973 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:39:08,973 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] [2022-03-20 17:39:09,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-03-20 17:39:09,199 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 [2022-03-20 17:39:09,199 INFO L403 AbstractCegarLoop]: === Iteration 96 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:39:09,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:39:09,200 INFO L85 PathProgramCache]: Analyzing trace with hash 503729061, now seen corresponding path program 1 times [2022-03-20 17:39:09,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:39:09,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1927693445] [2022-03-20 17:39:09,202 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:39:09,202 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:39:09,202 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:39:09,202 INFO L85 PathProgramCache]: Analyzing trace with hash 503729061, now seen corresponding path program 2 times [2022-03-20 17:39:09,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:39:09,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424845193] [2022-03-20 17:39:09,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:39:09,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:39:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:09,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:39:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:09,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:39:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:09,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:39:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:09,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:39:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:09,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:39:09,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:09,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:09,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:39:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:09,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 17:39:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:09,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-20 17:39:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:09,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:09,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-20 17:39:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:09,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:09,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:39:09,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:39:09,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424845193] [2022-03-20 17:39:09,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424845193] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:39:09,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963845661] [2022-03-20 17:39:09,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:39:09,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:39:09,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:39:09,599 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) [2022-03-20 17:39:09,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-03-20 17:39:12,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:39:12,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:39:12,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-20 17:39:12,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:39:12,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:39:12,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:39:12,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963845661] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:39:12,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:39:12,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2022-03-20 17:39:12,540 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:39:12,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1927693445] [2022-03-20 17:39:12,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1927693445] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:39:12,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:39:12,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 17:39:12,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813144714] [2022-03-20 17:39:12,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:39:12,541 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 17:39:12,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:39:12,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 17:39:12,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-03-20 17:39:12,541 INFO L87 Difference]: Start difference. First operand 1857 states and 2546 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) [2022-03-20 17:39:13,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:39:13,743 INFO L93 Difference]: Finished difference Result 1891 states and 2584 transitions. [2022-03-20 17:39:13,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 17:39:13,744 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 [2022-03-20 17:39:13,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:39:13,747 INFO L225 Difference]: With dead ends: 1891 [2022-03-20 17:39:13,747 INFO L226 Difference]: Without dead ends: 1860 [2022-03-20 17:39:13,748 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 [2022-03-20 17:39:13,748 INFO L913 BasicCegarLoop]: 2101 mSDtfsCounter, 21 mSDsluCounter, 20959 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 23060 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:39:13,748 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 23060 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 17:39:13,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2022-03-20 17:39:14,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1857. [2022-03-20 17:39:14,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1252 states have (on average 1.292332268370607) internal successors, (1618), 1286 states have internal predecessors, (1618), 461 states have call successors, (461), 138 states have call predecessors, (461), 143 states have return successors, (465), 453 states have call predecessors, (465), 457 states have call successors, (465) [2022-03-20 17:39:14,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 2544 transitions. [2022-03-20 17:39:14,663 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 2544 transitions. Word has length 120 [2022-03-20 17:39:14,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:39:14,663 INFO L478 AbstractCegarLoop]: Abstraction has 1857 states and 2544 transitions. [2022-03-20 17:39:14,664 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) [2022-03-20 17:39:14,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 2544 transitions. [2022-03-20 17:39:14,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-03-20 17:39:14,687 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:39:14,687 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] [2022-03-20 17:39:14,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-03-20 17:39:14,908 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 [2022-03-20 17:39:14,908 INFO L403 AbstractCegarLoop]: === Iteration 97 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:39:14,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:39:14,908 INFO L85 PathProgramCache]: Analyzing trace with hash 62858148, now seen corresponding path program 1 times [2022-03-20 17:39:14,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:39:14,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1994982912] [2022-03-20 17:39:14,911 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:39:14,911 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:39:14,911 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:39:14,911 INFO L85 PathProgramCache]: Analyzing trace with hash 62858148, now seen corresponding path program 2 times [2022-03-20 17:39:14,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:39:14,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022683036] [2022-03-20 17:39:14,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:39:14,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:39:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:15,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:39:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:15,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:39:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:15,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:39:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:15,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:39:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:15,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:39:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:15,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:15,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 17:39:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:15,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 17:39:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:15,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:39:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:15,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:15,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:39:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:15,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:39:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:15,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-20 17:39:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:15,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 17:39:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 17:39:15,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:39:15,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022683036] [2022-03-20 17:39:15,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022683036] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:39:15,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426308333] [2022-03-20 17:39:15,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:39:15,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:39:15,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:39:15,348 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) [2022-03-20 17:39:15,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-03-20 17:39:18,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:39:18,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:39:18,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-20 17:39:18,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:39:18,252 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-03-20 17:39:18,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:39:18,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426308333] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:39:18,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:39:18,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-03-20 17:39:18,253 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:39:18,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1994982912] [2022-03-20 17:39:18,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1994982912] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:39:18,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:39:18,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 17:39:18,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248841827] [2022-03-20 17:39:18,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:39:18,254 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 17:39:18,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:39:18,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 17:39:18,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-03-20 17:39:18,254 INFO L87 Difference]: Start difference. First operand 1857 states and 2544 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) [2022-03-20 17:39:19,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:39:19,227 INFO L93 Difference]: Finished difference Result 1908 states and 2605 transitions. [2022-03-20 17:39:19,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 17:39:19,227 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 [2022-03-20 17:39:19,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:39:19,231 INFO L225 Difference]: With dead ends: 1908 [2022-03-20 17:39:19,231 INFO L226 Difference]: Without dead ends: 1863 [2022-03-20 17:39:19,231 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 [2022-03-20 17:39:19,231 INFO L913 BasicCegarLoop]: 2101 mSDtfsCounter, 15 mSDsluCounter, 16765 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 18866 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:39:19,231 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 18866 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:39:19,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2022-03-20 17:39:20,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1852. [2022-03-20 17:39:20,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1248 states have (on average 1.2932692307692308) internal successors, (1614), 1282 states have internal predecessors, (1614), 461 states have call successors, (461), 138 states have call predecessors, (461), 142 states have return successors, (464), 452 states have call predecessors, (464), 457 states have call successors, (464) [2022-03-20 17:39:20,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 2539 transitions. [2022-03-20 17:39:20,204 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 2539 transitions. Word has length 123 [2022-03-20 17:39:20,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:39:20,204 INFO L478 AbstractCegarLoop]: Abstraction has 1852 states and 2539 transitions. [2022-03-20 17:39:20,205 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) [2022-03-20 17:39:20,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 2539 transitions. [2022-03-20 17:39:20,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-03-20 17:39:20,206 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:39:20,206 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] [2022-03-20 17:39:20,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-03-20 17:39:20,418 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 [2022-03-20 17:39:20,418 INFO L403 AbstractCegarLoop]: === Iteration 98 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:39:20,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:39:20,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1450171217, now seen corresponding path program 1 times [2022-03-20 17:39:20,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:39:20,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [121644986] [2022-03-20 17:39:20,421 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:39:20,421 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:39:20,421 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:39:20,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1450171217, now seen corresponding path program 2 times [2022-03-20 17:39:20,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:39:20,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595458881] [2022-03-20 17:39:20,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:39:20,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:39:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:20,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:39:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:20,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:39:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:20,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:39:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:20,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:39:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:20,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:20,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:39:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:20,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:20,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 17:39:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:20,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:20,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 17:39:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:20,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:39:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:20,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:39:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:20,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:20,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:39:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:20,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:39:20,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:39:20,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595458881] [2022-03-20 17:39:20,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595458881] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:39:20,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460220646] [2022-03-20 17:39:20,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:39:20,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:39:20,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:39:20,865 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) [2022-03-20 17:39:20,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-03-20 17:39:23,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:39:23,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:39:23,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-20 17:39:23,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:39:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:39:23,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:39:23,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460220646] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:39:23,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:39:23,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2022-03-20 17:39:23,958 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:39:23,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [121644986] [2022-03-20 17:39:23,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [121644986] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:39:23,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:39:23,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 17:39:23,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369830646] [2022-03-20 17:39:23,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:39:23,959 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 17:39:23,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:39:23,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 17:39:23,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2022-03-20 17:39:23,959 INFO L87 Difference]: Start difference. First operand 1852 states and 2539 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) [2022-03-20 17:39:25,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:39:25,120 INFO L93 Difference]: Finished difference Result 1858 states and 2544 transitions. [2022-03-20 17:39:25,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 17:39:25,120 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 [2022-03-20 17:39:25,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:39:25,124 INFO L225 Difference]: With dead ends: 1858 [2022-03-20 17:39:25,124 INFO L226 Difference]: Without dead ends: 1752 [2022-03-20 17:39:25,124 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 [2022-03-20 17:39:25,124 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 [2022-03-20 17:39:25,125 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] [2022-03-20 17:39:25,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2022-03-20 17:39:26,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1752. [2022-03-20 17:39:26,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1752 states, 1169 states have (on average 1.2976903336184773) internal successors, (1517), 1201 states have internal predecessors, (1517), 451 states have call successors, (451), 128 states have call predecessors, (451), 131 states have return successors, (453), 441 states have call predecessors, (453), 447 states have call successors, (453) [2022-03-20 17:39:26,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 2421 transitions. [2022-03-20 17:39:26,059 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 2421 transitions. Word has length 122 [2022-03-20 17:39:26,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:39:26,059 INFO L478 AbstractCegarLoop]: Abstraction has 1752 states and 2421 transitions. [2022-03-20 17:39:26,059 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) [2022-03-20 17:39:26,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 2421 transitions. [2022-03-20 17:39:26,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-03-20 17:39:26,060 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:39:26,060 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:39:26,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-03-20 17:39:26,275 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 [2022-03-20 17:39:26,275 INFO L403 AbstractCegarLoop]: === Iteration 99 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:39:26,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:39:26,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1494974925, now seen corresponding path program 1 times [2022-03-20 17:39:26,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:39:26,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1657165383] [2022-03-20 17:39:26,278 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:39:26,278 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:39:26,278 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:39:26,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1494974925, now seen corresponding path program 2 times [2022-03-20 17:39:26,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:39:26,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44705399] [2022-03-20 17:39:26,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:39:26,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:39:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:26,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:39:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:26,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:39:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:26,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:39:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:26,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:39:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:26,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:39:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:26,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:26,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-20 17:39:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:26,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:39:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:26,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:39:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:26,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-03-20 17:39:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:26,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:26,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-20 17:39:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:26,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:26,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:39:26,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:39:26,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44705399] [2022-03-20 17:39:26,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44705399] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:39:26,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875254708] [2022-03-20 17:39:26,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:39:26,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:39:26,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:39:26,659 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) [2022-03-20 17:39:26,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-03-20 17:39:29,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:39:29,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:39:29,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 2030 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-20 17:39:29,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:39:29,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:39:29,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:39:29,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875254708] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:39:29,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:39:29,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-03-20 17:39:29,657 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:39:29,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1657165383] [2022-03-20 17:39:29,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1657165383] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:39:29,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:39:29,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:39:29,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456872085] [2022-03-20 17:39:29,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:39:29,657 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 17:39:29,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:39:29,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 17:39:29,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-03-20 17:39:29,657 INFO L87 Difference]: Start difference. First operand 1752 states and 2421 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) [2022-03-20 17:39:30,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:39:30,664 INFO L93 Difference]: Finished difference Result 2349 states and 3214 transitions. [2022-03-20 17:39:30,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 17:39:30,665 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 [2022-03-20 17:39:30,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:39:30,669 INFO L225 Difference]: With dead ends: 2349 [2022-03-20 17:39:30,669 INFO L226 Difference]: Without dead ends: 1761 [2022-03-20 17:39:30,670 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-03-20 17:39:30,670 INFO L913 BasicCegarLoop]: 2049 mSDtfsCounter, 4 mSDsluCounter, 12272 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14321 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:39:30,670 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 14321 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:39:30,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1761 states. [2022-03-20 17:39:31,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1761 to 1755. [2022-03-20 17:39:31,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1171 states have (on average 1.295473953885568) internal successors, (1517), 1204 states have internal predecessors, (1517), 451 states have call successors, (451), 128 states have call predecessors, (451), 132 states have return successors, (454), 441 states have call predecessors, (454), 447 states have call successors, (454) [2022-03-20 17:39:31,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2422 transitions. [2022-03-20 17:39:31,613 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2422 transitions. Word has length 124 [2022-03-20 17:39:31,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:39:31,613 INFO L478 AbstractCegarLoop]: Abstraction has 1755 states and 2422 transitions. [2022-03-20 17:39:31,613 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) [2022-03-20 17:39:31,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2422 transitions. [2022-03-20 17:39:31,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-03-20 17:39:31,614 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:39:31,614 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] [2022-03-20 17:39:31,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-03-20 17:39:31,839 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 [2022-03-20 17:39:31,839 INFO L403 AbstractCegarLoop]: === Iteration 100 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:39:31,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:39:31,840 INFO L85 PathProgramCache]: Analyzing trace with hash 132081646, now seen corresponding path program 1 times [2022-03-20 17:39:31,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:39:31,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1652341287] [2022-03-20 17:39:31,842 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:39:31,842 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:39:31,842 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:39:31,842 INFO L85 PathProgramCache]: Analyzing trace with hash 132081646, now seen corresponding path program 2 times [2022-03-20 17:39:31,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:39:31,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150862750] [2022-03-20 17:39:31,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:39:31,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:39:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:32,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:39:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:32,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:39:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:32,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:39:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:32,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:39:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:32,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:39:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:32,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:32,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-20 17:39:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:32,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:39:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:32,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:39:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:32,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-20 17:39:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:32,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:32,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-20 17:39:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:32,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:32,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:39:32,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:39:32,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150862750] [2022-03-20 17:39:32,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150862750] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:39:32,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713363863] [2022-03-20 17:39:32,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:39:32,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:39:32,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:39:32,257 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) [2022-03-20 17:39:32,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-03-20 17:39:35,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:39:35,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:39:35,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 2025 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-20 17:39:35,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:39:35,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:39:35,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:39:35,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713363863] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:39:35,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:39:35,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-03-20 17:39:35,371 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:39:35,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1652341287] [2022-03-20 17:39:35,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1652341287] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:39:35,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:39:35,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 17:39:35,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860596495] [2022-03-20 17:39:35,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:39:35,372 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 17:39:35,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:39:35,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 17:39:35,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-03-20 17:39:35,372 INFO L87 Difference]: Start difference. First operand 1755 states and 2422 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) [2022-03-20 17:39:36,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:39:36,368 INFO L93 Difference]: Finished difference Result 1824 states and 2496 transitions. [2022-03-20 17:39:36,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 17:39:36,368 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 [2022-03-20 17:39:36,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:39:36,371 INFO L225 Difference]: With dead ends: 1824 [2022-03-20 17:39:36,371 INFO L226 Difference]: Without dead ends: 1756 [2022-03-20 17:39:36,372 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-03-20 17:39:36,372 INFO L913 BasicCegarLoop]: 2047 mSDtfsCounter, 4 mSDsluCounter, 12264 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14311 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:39:36,372 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 14311 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:39:36,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2022-03-20 17:39:37,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1750. [2022-03-20 17:39:37,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1750 states, 1167 states have (on average 1.2956298200514138) internal successors, (1512), 1199 states have internal predecessors, (1512), 451 states have call successors, (451), 128 states have call predecessors, (451), 131 states have return successors, (453), 441 states have call predecessors, (453), 447 states have call successors, (453) [2022-03-20 17:39:37,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 2416 transitions. [2022-03-20 17:39:37,248 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 2416 transitions. Word has length 123 [2022-03-20 17:39:37,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:39:37,248 INFO L478 AbstractCegarLoop]: Abstraction has 1750 states and 2416 transitions. [2022-03-20 17:39:37,248 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) [2022-03-20 17:39:37,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 2416 transitions. [2022-03-20 17:39:37,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-03-20 17:39:37,249 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:39:37,249 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] [2022-03-20 17:39:37,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-03-20 17:39:37,463 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 [2022-03-20 17:39:37,463 INFO L403 AbstractCegarLoop]: === Iteration 101 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:39:37,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:39:37,463 INFO L85 PathProgramCache]: Analyzing trace with hash 834732920, now seen corresponding path program 1 times [2022-03-20 17:39:37,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:39:37,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [36320969] [2022-03-20 17:39:37,466 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:39:37,466 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:39:37,466 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:39:37,466 INFO L85 PathProgramCache]: Analyzing trace with hash 834732920, now seen corresponding path program 2 times [2022-03-20 17:39:37,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:39:37,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376698092] [2022-03-20 17:39:37,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:39:37,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:39:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:37,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:39:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:37,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:39:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:37,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:39:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:37,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:39:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:37,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:39:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:37,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:37,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 17:39:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:37,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 17:39:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:37,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:37,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 17:39:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:37,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 17:39:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:37,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-20 17:39:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:37,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:37,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-20 17:39:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:37,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:37,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 17:39:37,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:39:37,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376698092] [2022-03-20 17:39:37,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376698092] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:39:37,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90349816] [2022-03-20 17:39:37,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:39:37,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:39:37,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:39:37,875 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) [2022-03-20 17:39:37,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-03-20 17:39:40,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:39:40,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:39:40,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 1959 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-20 17:39:40,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:39:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 17:39:40,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:39:40,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90349816] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:39:40,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:39:40,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 20 [2022-03-20 17:39:40,962 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:39:40,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [36320969] [2022-03-20 17:39:40,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [36320969] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:39:40,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:39:40,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:39:40,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140857706] [2022-03-20 17:39:40,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:39:40,963 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 17:39:40,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:39:40,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 17:39:40,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-03-20 17:39:40,963 INFO L87 Difference]: Start difference. First operand 1750 states and 2416 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) [2022-03-20 17:39:41,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:39:41,971 INFO L93 Difference]: Finished difference Result 1777 states and 2446 transitions. [2022-03-20 17:39:41,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 17:39:41,971 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 [2022-03-20 17:39:41,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:39:41,974 INFO L225 Difference]: With dead ends: 1777 [2022-03-20 17:39:41,974 INFO L226 Difference]: Without dead ends: 1747 [2022-03-20 17:39:41,975 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-03-20 17:39:41,975 INFO L913 BasicCegarLoop]: 2054 mSDtfsCounter, 15 mSDsluCounter, 18439 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 20493 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:39:41,975 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 20493 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:39:41,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2022-03-20 17:39:42,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1747. [2022-03-20 17:39:42,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1165 states have (on average 1.2952789699570815) internal successors, (1509), 1197 states have internal predecessors, (1509), 450 states have call successors, (450), 128 states have call predecessors, (450), 131 states have return successors, (452), 440 states have call predecessors, (452), 446 states have call successors, (452) [2022-03-20 17:39:42,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2411 transitions. [2022-03-20 17:39:42,908 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2411 transitions. Word has length 126 [2022-03-20 17:39:42,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:39:42,908 INFO L478 AbstractCegarLoop]: Abstraction has 1747 states and 2411 transitions. [2022-03-20 17:39:42,909 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) [2022-03-20 17:39:42,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2411 transitions. [2022-03-20 17:39:42,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-03-20 17:39:42,909 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:39:42,910 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] [2022-03-20 17:39:42,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-03-20 17:39:43,135 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 [2022-03-20 17:39:43,135 INFO L403 AbstractCegarLoop]: === Iteration 102 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:39:43,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:39:43,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1130059361, now seen corresponding path program 1 times [2022-03-20 17:39:43,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:39:43,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1421344271] [2022-03-20 17:39:43,138 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:39:43,138 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:39:43,138 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:39:43,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1130059361, now seen corresponding path program 2 times [2022-03-20 17:39:43,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:39:43,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43110887] [2022-03-20 17:39:43,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:39:43,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:39:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:43,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:39:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:43,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:39:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:43,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:39:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:43,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:39:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:43,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:39:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:43,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:43,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:39:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:43,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 17:39:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:43,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:43,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 17:39:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:43,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-20 17:39:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:43,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:43,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-20 17:39:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:43,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:43,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 17:39:43,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:39:43,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43110887] [2022-03-20 17:39:43,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43110887] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:39:43,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936854443] [2022-03-20 17:39:43,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:39:43,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:39:43,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:39:43,610 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) [2022-03-20 17:39:43,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-03-20 17:39:46,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:39:46,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:39:46,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 1934 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-20 17:39:46,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:39:46,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 17:39:46,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:39:46,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936854443] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:39:46,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:39:46,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 21 [2022-03-20 17:39:46,819 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:39:46,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1421344271] [2022-03-20 17:39:46,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1421344271] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:39:46,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:39:46,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:39:46,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255174586] [2022-03-20 17:39:46,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:39:46,819 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 17:39:46,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:39:46,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 17:39:46,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-03-20 17:39:46,819 INFO L87 Difference]: Start difference. First operand 1747 states and 2411 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) [2022-03-20 17:39:47,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:39:47,917 INFO L93 Difference]: Finished difference Result 1774 states and 2441 transitions. [2022-03-20 17:39:47,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 17:39:47,918 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 [2022-03-20 17:39:47,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:39:47,921 INFO L225 Difference]: With dead ends: 1774 [2022-03-20 17:39:47,921 INFO L226 Difference]: Without dead ends: 1745 [2022-03-20 17:39:47,921 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 [2022-03-20 17:39:47,922 INFO L913 BasicCegarLoop]: 2054 mSDtfsCounter, 17 mSDsluCounter, 18430 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 20484 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:39:47,922 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 20484 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:39:47,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2022-03-20 17:39:48,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 1745. [2022-03-20 17:39:48,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1745 states, 1164 states have (on average 1.2946735395189004) internal successors, (1507), 1196 states have internal predecessors, (1507), 449 states have call successors, (449), 128 states have call predecessors, (449), 131 states have return successors, (451), 439 states have call predecessors, (451), 445 states have call successors, (451) [2022-03-20 17:39:48,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 2407 transitions. [2022-03-20 17:39:48,898 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 2407 transitions. Word has length 125 [2022-03-20 17:39:48,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:39:48,899 INFO L478 AbstractCegarLoop]: Abstraction has 1745 states and 2407 transitions. [2022-03-20 17:39:48,899 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) [2022-03-20 17:39:48,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 2407 transitions. [2022-03-20 17:39:48,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-03-20 17:39:48,900 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:39:48,900 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] [2022-03-20 17:39:48,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-03-20 17:39:49,115 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 [2022-03-20 17:39:49,115 INFO L403 AbstractCegarLoop]: === Iteration 103 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:39:49,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:39:49,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1737060291, now seen corresponding path program 1 times [2022-03-20 17:39:49,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:39:49,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1871946366] [2022-03-20 17:39:49,124 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:39:49,124 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:39:49,124 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:39:49,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1737060291, now seen corresponding path program 2 times [2022-03-20 17:39:49,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:39:49,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656898229] [2022-03-20 17:39:49,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:39:49,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:39:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:49,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:39:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:49,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:39:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:49,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:39:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:49,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:39:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:49,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:39:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:49,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:49,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 17:39:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:49,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:39:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:49,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:49,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 17:39:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:49,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 17:39:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:49,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-20 17:39:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:49,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:49,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-20 17:39:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:49,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:49,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 17:39:49,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:39:49,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656898229] [2022-03-20 17:39:49,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656898229] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:39:49,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420651603] [2022-03-20 17:39:49,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:39:49,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:39:49,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:39:49,551 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) [2022-03-20 17:39:49,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-03-20 17:39:52,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:39:52,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:39:52,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 1960 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-20 17:39:52,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:39:52,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 17:39:52,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:39:52,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420651603] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:39:52,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:39:52,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 20 [2022-03-20 17:39:52,619 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:39:52,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1871946366] [2022-03-20 17:39:52,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1871946366] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:39:52,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:39:52,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:39:52,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216480829] [2022-03-20 17:39:52,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:39:52,620 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 17:39:52,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:39:52,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 17:39:52,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-03-20 17:39:52,620 INFO L87 Difference]: Start difference. First operand 1745 states and 2407 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) [2022-03-20 17:39:53,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:39:53,743 INFO L93 Difference]: Finished difference Result 1772 states and 2437 transitions. [2022-03-20 17:39:53,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 17:39:53,744 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 [2022-03-20 17:39:53,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:39:53,747 INFO L225 Difference]: With dead ends: 1772 [2022-03-20 17:39:53,747 INFO L226 Difference]: Without dead ends: 1742 [2022-03-20 17:39:53,747 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-03-20 17:39:53,747 INFO L913 BasicCegarLoop]: 2052 mSDtfsCounter, 13 mSDsluCounter, 18417 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 20469 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:39:53,747 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 20469 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 17:39:53,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2022-03-20 17:39:54,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1742. [2022-03-20 17:39:54,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1742 states, 1162 states have (on average 1.2943201376936317) internal successors, (1504), 1194 states have internal predecessors, (1504), 448 states have call successors, (448), 128 states have call predecessors, (448), 131 states have return successors, (450), 438 states have call predecessors, (450), 444 states have call successors, (450) [2022-03-20 17:39:54,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1742 states to 1742 states and 2402 transitions. [2022-03-20 17:39:54,625 INFO L78 Accepts]: Start accepts. Automaton has 1742 states and 2402 transitions. Word has length 127 [2022-03-20 17:39:54,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:39:54,625 INFO L478 AbstractCegarLoop]: Abstraction has 1742 states and 2402 transitions. [2022-03-20 17:39:54,625 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) [2022-03-20 17:39:54,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1742 states and 2402 transitions. [2022-03-20 17:39:54,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-03-20 17:39:54,626 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:39:54,626 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] [2022-03-20 17:39:54,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2022-03-20 17:39:54,833 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 [2022-03-20 17:39:54,833 INFO L403 AbstractCegarLoop]: === Iteration 104 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:39:54,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:39:54,833 INFO L85 PathProgramCache]: Analyzing trace with hash -871131783, now seen corresponding path program 1 times [2022-03-20 17:39:54,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:39:54,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1452842984] [2022-03-20 17:39:54,836 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:39:54,836 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:39:54,836 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:39:54,836 INFO L85 PathProgramCache]: Analyzing trace with hash -871131783, now seen corresponding path program 2 times [2022-03-20 17:39:54,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:39:54,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455105213] [2022-03-20 17:39:54,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:39:54,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:39:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:55,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:39:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:55,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:39:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:55,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:39:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:55,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:39:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:55,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:39:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:55,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:55,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:39:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:55,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:39:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:55,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:55,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 17:39:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:55,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-20 17:39:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:55,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:55,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-20 17:39:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:55,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:39:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:39:55,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 17:39:55,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:39:55,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455105213] [2022-03-20 17:39:55,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455105213] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:39:55,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016335377] [2022-03-20 17:39:55,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:39:55,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:39:55,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:39:55,307 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) [2022-03-20 17:39:55,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-03-20 17:39:58,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:39:58,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:39:58,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 1935 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-20 17:39:58,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:39:58,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 17:39:58,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:39:58,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016335377] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:39:58,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:39:58,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 21 [2022-03-20 17:39:58,533 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:39:58,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1452842984] [2022-03-20 17:39:58,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1452842984] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:39:58,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:39:58,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 17:39:58,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974826390] [2022-03-20 17:39:58,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:39:58,533 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 17:39:58,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:39:58,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 17:39:58,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-03-20 17:39:58,534 INFO L87 Difference]: Start difference. First operand 1742 states and 2402 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) [2022-03-20 17:39:59,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:39:59,601 INFO L93 Difference]: Finished difference Result 1769 states and 2432 transitions. [2022-03-20 17:39:59,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 17:39:59,601 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 [2022-03-20 17:39:59,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:39:59,605 INFO L225 Difference]: With dead ends: 1769 [2022-03-20 17:39:59,605 INFO L226 Difference]: Without dead ends: 1740 [2022-03-20 17:39:59,605 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 [2022-03-20 17:39:59,605 INFO L913 BasicCegarLoop]: 2040 mSDtfsCounter, 16 mSDsluCounter, 18314 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 20354 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:39:59,605 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 20354 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:39:59,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2022-03-20 17:40:00,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1740. [2022-03-20 17:40:00,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1161 states have (on average 1.2937123169681308) internal successors, (1502), 1193 states have internal predecessors, (1502), 447 states have call successors, (447), 128 states have call predecessors, (447), 131 states have return successors, (449), 437 states have call predecessors, (449), 443 states have call successors, (449) [2022-03-20 17:40:00,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2398 transitions. [2022-03-20 17:40:00,538 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2398 transitions. Word has length 126 [2022-03-20 17:40:00,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:40:00,538 INFO L478 AbstractCegarLoop]: Abstraction has 1740 states and 2398 transitions. [2022-03-20 17:40:00,538 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) [2022-03-20 17:40:00,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2398 transitions. [2022-03-20 17:40:00,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-03-20 17:40:00,539 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:40:00,539 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] [2022-03-20 17:40:00,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-03-20 17:40:00,755 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 [2022-03-20 17:40:00,755 INFO L403 AbstractCegarLoop]: === Iteration 105 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:40:00,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:40:00,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1179691510, now seen corresponding path program 1 times [2022-03-20 17:40:00,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:40:00,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [280496551] [2022-03-20 17:40:00,760 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:40:00,760 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:40:00,760 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:40:00,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1179691510, now seen corresponding path program 2 times [2022-03-20 17:40:00,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:40:00,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844495523] [2022-03-20 17:40:00,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:40:00,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:40:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:00,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:40:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:01,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:40:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:01,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:40:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:01,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:40:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:01,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:40:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:01,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:40:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:01,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-20 17:40:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:01,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-20 17:40:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:01,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:40:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:01,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:40:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:01,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 17:40:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:01,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-20 17:40:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:01,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:40:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:01,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-20 17:40:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:01,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:40:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:01,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 17:40:01,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:40:01,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844495523] [2022-03-20 17:40:01,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844495523] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:40:01,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142235936] [2022-03-20 17:40:01,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:40:01,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:40:01,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:40:01,194 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) [2022-03-20 17:40:01,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-03-20 17:40:04,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:40:04,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:40:04,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 1964 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-20 17:40:04,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:40:04,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 17:40:04,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:40:04,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142235936] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:40:04,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:40:04,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [12] total 24 [2022-03-20 17:40:04,483 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:40:04,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [280496551] [2022-03-20 17:40:04,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [280496551] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:40:04,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:40:04,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:40:04,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626453319] [2022-03-20 17:40:04,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:40:04,483 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 17:40:04,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:40:04,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 17:40:04,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2022-03-20 17:40:04,484 INFO L87 Difference]: Start difference. First operand 1740 states and 2398 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) [2022-03-20 17:40:05,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:40:05,658 INFO L93 Difference]: Finished difference Result 1762 states and 2423 transitions. [2022-03-20 17:40:05,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 17:40:05,658 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 [2022-03-20 17:40:05,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:40:05,661 INFO L225 Difference]: With dead ends: 1762 [2022-03-20 17:40:05,661 INFO L226 Difference]: Without dead ends: 1712 [2022-03-20 17:40:05,662 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 [2022-03-20 17:40:05,662 INFO L913 BasicCegarLoop]: 2034 mSDtfsCounter, 19 mSDsluCounter, 24355 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 26389 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:40:05,662 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 26389 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 17:40:05,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2022-03-20 17:40:06,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1712. [2022-03-20 17:40:06,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1712 states, 1138 states have (on average 1.2987697715289983) internal successors, (1478), 1170 states have internal predecessors, (1478), 444 states have call successors, (444), 126 states have call predecessors, (444), 129 states have return successors, (446), 434 states have call predecessors, (446), 440 states have call successors, (446) [2022-03-20 17:40:06,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 2368 transitions. [2022-03-20 17:40:06,574 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 2368 transitions. Word has length 134 [2022-03-20 17:40:06,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:40:06,574 INFO L478 AbstractCegarLoop]: Abstraction has 1712 states and 2368 transitions. [2022-03-20 17:40:06,574 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) [2022-03-20 17:40:06,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 2368 transitions. [2022-03-20 17:40:06,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-03-20 17:40:06,575 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:40:06,576 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] [2022-03-20 17:40:06,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-03-20 17:40:06,803 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 [2022-03-20 17:40:06,803 INFO L403 AbstractCegarLoop]: === Iteration 106 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:40:06,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:40:06,803 INFO L85 PathProgramCache]: Analyzing trace with hash 725300983, now seen corresponding path program 1 times [2022-03-20 17:40:06,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:40:06,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [723756978] [2022-03-20 17:40:06,806 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:40:06,806 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:40:06,806 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:40:06,806 INFO L85 PathProgramCache]: Analyzing trace with hash 725300983, now seen corresponding path program 2 times [2022-03-20 17:40:06,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:40:06,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962645433] [2022-03-20 17:40:06,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:40:06,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:40:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:40:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:40:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:40:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:40:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:40:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:40:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-20 17:40:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:40:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:40:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 17:40:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:40:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 17:40:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 17:40:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:40:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 17:40:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 17:40:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:40:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:40:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 17:40:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 17:40:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:40:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 17:40:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 17:40:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-03-20 17:40:07,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:40:07,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962645433] [2022-03-20 17:40:07,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962645433] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:40:07,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894897713] [2022-03-20 17:40:07,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:40:07,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:40:07,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:40:07,365 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) [2022-03-20 17:40:07,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-03-20 17:40:10,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:40:10,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:40:10,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 17:40:10,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:40:10,615 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-03-20 17:40:10,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:40:10,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894897713] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:40:10,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:40:10,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-03-20 17:40:10,615 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:40:10,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [723756978] [2022-03-20 17:40:10,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [723756978] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:40:10,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:40:10,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 17:40:10,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094681055] [2022-03-20 17:40:10,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:40:10,616 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 17:40:10,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:40:10,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 17:40:10,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-03-20 17:40:10,616 INFO L87 Difference]: Start difference. First operand 1712 states and 2368 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) [2022-03-20 17:40:11,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:40:11,589 INFO L93 Difference]: Finished difference Result 1768 states and 2434 transitions. [2022-03-20 17:40:11,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 17:40:11,589 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 [2022-03-20 17:40:11,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:40:11,592 INFO L225 Difference]: With dead ends: 1768 [2022-03-20 17:40:11,592 INFO L226 Difference]: Without dead ends: 1723 [2022-03-20 17:40:11,592 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 [2022-03-20 17:40:11,593 INFO L913 BasicCegarLoop]: 2014 mSDtfsCounter, 3 mSDsluCounter, 10049 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 12063 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:40:11,593 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 12063 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:40:11,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2022-03-20 17:40:12,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1715. [2022-03-20 17:40:12,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1140 states have (on average 1.2982456140350878) internal successors, (1480), 1172 states have internal predecessors, (1480), 444 states have call successors, (444), 126 states have call predecessors, (444), 130 states have return successors, (447), 435 states have call predecessors, (447), 440 states have call successors, (447) [2022-03-20 17:40:12,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2371 transitions. [2022-03-20 17:40:12,457 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2371 transitions. Word has length 157 [2022-03-20 17:40:12,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:40:12,457 INFO L478 AbstractCegarLoop]: Abstraction has 1715 states and 2371 transitions. [2022-03-20 17:40:12,457 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) [2022-03-20 17:40:12,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2371 transitions. [2022-03-20 17:40:12,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-03-20 17:40:12,458 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:40:12,458 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] [2022-03-20 17:40:12,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-03-20 17:40:12,660 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 [2022-03-20 17:40:12,660 INFO L403 AbstractCegarLoop]: === Iteration 107 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:40:12,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:40:12,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1188720842, now seen corresponding path program 1 times [2022-03-20 17:40:12,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:40:12,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [807665282] [2022-03-20 17:40:12,671 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:40:12,671 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:40:12,671 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:40:12,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1188720842, now seen corresponding path program 2 times [2022-03-20 17:40:12,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:40:12,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450070869] [2022-03-20 17:40:12,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:40:12,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:40:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:12,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:40:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:12,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:40:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:12,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:40:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:12,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:40:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:12,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:40:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:12,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:40:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:13,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-20 17:40:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:13,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:40:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:13,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:40:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:13,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 17:40:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:13,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:40:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:13,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 17:40:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:13,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 17:40:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:13,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:40:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:13,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 17:40:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:13,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 17:40:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:13,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 17:40:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:13,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:40:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:13,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-20 17:40:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:13,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 17:40:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:13,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-20 17:40:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:13,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 17:40:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:13,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 17:40:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-03-20 17:40:13,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:40:13,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450070869] [2022-03-20 17:40:13,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450070869] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:40:13,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819060361] [2022-03-20 17:40:13,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:40:13,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:40:13,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:40:13,126 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) [2022-03-20 17:40:13,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-03-20 17:40:16,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:40:16,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:40:16,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 17:40:16,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:40:16,347 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-03-20 17:40:16,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:40:16,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819060361] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:40:16,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:40:16,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-03-20 17:40:16,347 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:40:16,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [807665282] [2022-03-20 17:40:16,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [807665282] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:40:16,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:40:16,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 17:40:16,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115368323] [2022-03-20 17:40:16,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:40:16,348 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 17:40:16,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:40:16,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 17:40:16,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-03-20 17:40:16,348 INFO L87 Difference]: Start difference. First operand 1715 states and 2371 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) [2022-03-20 17:40:17,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:40:17,223 INFO L93 Difference]: Finished difference Result 1728 states and 2385 transitions. [2022-03-20 17:40:17,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 17:40:17,223 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 [2022-03-20 17:40:17,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:40:17,228 INFO L225 Difference]: With dead ends: 1728 [2022-03-20 17:40:17,228 INFO L226 Difference]: Without dead ends: 1683 [2022-03-20 17:40:17,228 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-03-20 17:40:17,239 INFO L913 BasicCegarLoop]: 2003 mSDtfsCounter, 3 mSDsluCounter, 9999 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 12002 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:40:17,239 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 12002 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:40:17,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2022-03-20 17:40:18,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1672. [2022-03-20 17:40:18,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1672 states, 1107 states have (on average 1.2990063233965674) internal successors, (1438), 1135 states have internal predecessors, (1438), 439 states have call successors, (439), 123 states have call predecessors, (439), 125 states have return successors, (442), 430 states have call predecessors, (442), 437 states have call successors, (442) [2022-03-20 17:40:18,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 2319 transitions. [2022-03-20 17:40:18,157 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 2319 transitions. Word has length 156 [2022-03-20 17:40:18,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:40:18,157 INFO L478 AbstractCegarLoop]: Abstraction has 1672 states and 2319 transitions. [2022-03-20 17:40:18,157 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) [2022-03-20 17:40:18,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 2319 transitions. [2022-03-20 17:40:18,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-20 17:40:18,158 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:40:18,158 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] [2022-03-20 17:40:18,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-03-20 17:40:18,362 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 [2022-03-20 17:40:18,362 INFO L403 AbstractCegarLoop]: === Iteration 108 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:40:18,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:40:18,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1864412067, now seen corresponding path program 1 times [2022-03-20 17:40:18,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:40:18,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1741565894] [2022-03-20 17:40:18,365 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:40:18,365 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:40:18,365 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:40:18,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1864412067, now seen corresponding path program 2 times [2022-03-20 17:40:18,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:40:18,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925361155] [2022-03-20 17:40:18,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:40:18,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:40:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:18,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:40:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:18,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:40:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:18,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:40:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:18,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-20 17:40:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:18,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 17:40:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:18,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:40:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:18,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 17:40:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:18,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 17:40:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:18,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 17:40:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:18,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:40:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:18,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:40:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:18,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:40:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:18,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-20 17:40:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:18,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 17:40:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:18,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-20 17:40:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:18,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:40:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:18,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-20 17:40:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:18,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:40:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:18,781 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 17:40:18,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:40:18,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925361155] [2022-03-20 17:40:18,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925361155] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:40:18,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740898067] [2022-03-20 17:40:18,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:40:18,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:40:18,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:40:18,782 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) [2022-03-20 17:40:18,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-03-20 17:40:21,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:40:21,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:40:21,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 1967 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-20 17:40:21,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:40:22,033 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-03-20 17:40:22,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:40:22,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740898067] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:40:22,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:40:22,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [11] total 22 [2022-03-20 17:40:22,034 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:40:22,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1741565894] [2022-03-20 17:40:22,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1741565894] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:40:22,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:40:22,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 17:40:22,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171221858] [2022-03-20 17:40:22,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:40:22,034 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 17:40:22,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:40:22,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 17:40:22,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2022-03-20 17:40:22,035 INFO L87 Difference]: Start difference. First operand 1672 states and 2319 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) [2022-03-20 17:40:23,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:40:23,153 INFO L93 Difference]: Finished difference Result 1694 states and 2344 transitions. [2022-03-20 17:40:23,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 17:40:23,153 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 [2022-03-20 17:40:23,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:40:23,156 INFO L225 Difference]: With dead ends: 1694 [2022-03-20 17:40:23,156 INFO L226 Difference]: Without dead ends: 1631 [2022-03-20 17:40:23,156 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 [2022-03-20 17:40:23,157 INFO L913 BasicCegarLoop]: 2004 mSDtfsCounter, 11 mSDsluCounter, 22002 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 24006 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 17:40:23,157 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 24006 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 17:40:23,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2022-03-20 17:40:24,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2022-03-20 17:40:24,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1080 states have (on average 1.3027777777777778) internal successors, (1407), 1108 states have internal predecessors, (1407), 428 states have call successors, (428), 120 states have call predecessors, (428), 122 states have return successors, (431), 419 states have call predecessors, (431), 426 states have call successors, (431) [2022-03-20 17:40:24,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2266 transitions. [2022-03-20 17:40:24,046 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2266 transitions. Word has length 143 [2022-03-20 17:40:24,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:40:24,046 INFO L478 AbstractCegarLoop]: Abstraction has 1631 states and 2266 transitions. [2022-03-20 17:40:24,046 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) [2022-03-20 17:40:24,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2266 transitions. [2022-03-20 17:40:24,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-03-20 17:40:24,047 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:40:24,047 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:40:24,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-03-20 17:40:24,275 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 [2022-03-20 17:40:24,275 INFO L403 AbstractCegarLoop]: === Iteration 109 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:40:24,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:40:24,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1747104292, now seen corresponding path program 1 times [2022-03-20 17:40:24,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:40:24,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1154464788] [2022-03-20 17:40:24,279 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:40:24,279 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:40:24,279 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:40:24,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1747104292, now seen corresponding path program 2 times [2022-03-20 17:40:24,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:40:24,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340391652] [2022-03-20 17:40:24,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:40:24,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:40:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:24,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:40:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:24,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:40:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:24,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:40:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:24,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:40:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:24,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:40:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:24,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:40:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:24,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:40:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:24,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:40:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:24,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:40:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:24,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:40:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:24,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:40:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:24,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:40:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:24,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:40:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:24,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:40:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:24,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-20 17:40:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:24,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-20 17:40:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:25,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-20 17:40:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:25,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:40:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:25,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 17:40:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:25,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:40:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:40:25,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:40:25,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:40:25,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340391652] [2022-03-20 17:40:25,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340391652] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:40:25,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:40:25,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-20 17:40:25,017 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:40:25,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1154464788] [2022-03-20 17:40:25,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1154464788] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:40:25,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:40:25,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-20 17:40:25,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813392467] [2022-03-20 17:40:25,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:40:25,018 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-20 17:40:25,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:40:25,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-20 17:40:25,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-03-20 17:40:25,018 INFO L87 Difference]: Start difference. First operand 1631 states and 2266 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) [2022-03-20 17:40:32,426 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:40:34,446 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:40:37,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:40:39,887 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:40:41,906 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:40:43,961 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:41:05,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:41:05,843 INFO L93 Difference]: Finished difference Result 3312 states and 4766 transitions. [2022-03-20 17:41:05,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-20 17:41:05,844 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 152 [2022-03-20 17:41:05,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:41:05,849 INFO L225 Difference]: With dead ends: 3312 [2022-03-20 17:41:05,849 INFO L226 Difference]: Without dead ends: 2048 [2022-03-20 17:41:05,851 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=253, Invalid=1307, Unknown=0, NotChecked=0, Total=1560 [2022-03-20 17:41:05,851 INFO L913 BasicCegarLoop]: 1507 mSDtfsCounter, 7954 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 16906 mSolverCounterSat, 6427 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7979 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 23336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6427 IncrementalHoareTripleChecker+Valid, 16906 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:41:05,851 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7979 Valid, 2892 Invalid, 23336 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6427 Valid, 16906 Invalid, 3 Unknown, 0 Unchecked, 38.0s Time] [2022-03-20 17:41:05,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states. [2022-03-20 17:41:06,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 1636. [2022-03-20 17:41:06,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1084 states have (on average 1.3007380073800738) internal successors, (1410), 1112 states have internal predecessors, (1410), 428 states have call successors, (428), 120 states have call predecessors, (428), 123 states have return successors, (433), 420 states have call predecessors, (433), 426 states have call successors, (433) [2022-03-20 17:41:06,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2271 transitions. [2022-03-20 17:41:06,825 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2271 transitions. Word has length 152 [2022-03-20 17:41:06,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:41:06,826 INFO L478 AbstractCegarLoop]: Abstraction has 1636 states and 2271 transitions. [2022-03-20 17:41:06,826 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-03-20 17:41:06,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2271 transitions. [2022-03-20 17:41:06,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-03-20 17:41:06,827 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:41:06,827 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, 1] [2022-03-20 17:41:06,827 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-03-20 17:41:06,827 INFO L403 AbstractCegarLoop]: === Iteration 110 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:41:06,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:41:06,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1659080684, now seen corresponding path program 1 times [2022-03-20 17:41:06,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:41:06,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [98368937] [2022-03-20 17:41:06,829 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 17:41:06,829 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2022-03-20 17:41:06,829 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:41:06,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1659080684, now seen corresponding path program 2 times [2022-03-20 17:41:06,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:41:06,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848019420] [2022-03-20 17:41:06,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:41:06,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:41:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:41:07,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:41:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:41:07,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-20 17:41:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:41:07,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:41:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:41:07,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 17:41:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:41:07,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:41:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:41:07,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:41:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:41:07,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:41:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:41:07,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-20 17:41:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:41:07,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:41:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:41:07,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:41:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:41:07,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:41:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:41:07,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-20 17:41:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:41:07,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:41:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:41:07,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:41:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:41:07,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-20 17:41:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:41:07,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-20 17:41:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:41:07,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-20 17:41:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:41:07,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:41:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:41:07,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-20 17:41:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:41:07,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:41:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:41:07,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:41:07,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:41:07,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848019420] [2022-03-20 17:41:07,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848019420] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:41:07,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386779897] [2022-03-20 17:41:07,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:41:07,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:41:07,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:41:07,403 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 17:41:07,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-03-20 17:41:10,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:41:10,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:41:10,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 2350 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-20 17:41:10,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:41:10,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:41:10,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:41:10,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386779897] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:41:10,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:41:10,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [16] total 28 [2022-03-20 17:41:10,950 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:41:10,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [98368937] [2022-03-20 17:41:10,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [98368937] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:41:10,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:41:10,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-20 17:41:10,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661985515] [2022-03-20 17:41:10,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:41:10,951 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-20 17:41:10,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:41:10,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-20 17:41:10,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2022-03-20 17:41:10,951 INFO L87 Difference]: Start difference. First operand 1636 states and 2271 transitions. Second operand has 14 states, 14 states have (on average 7.928571428571429) internal successors, (111), 11 states have internal predecessors, (111), 5 states have call successors, (22), 4 states have call predecessors, (22), 6 states have return successors, (20), 7 states have call predecessors, (20), 4 states have call successors, (20) [2022-03-20 17:41:17,235 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:41:19,255 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:41:20,318 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:41:22,039 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:41:24,062 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:41:25,084 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 17:41:27,664 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []