/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers/parport.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-18 05:47:46,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 05:47:46,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 05:47:46,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 05:47:46,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 05:47:46,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 05:47:46,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 05:47:46,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 05:47:46,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 05:47:46,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 05:47:46,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 05:47:46,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 05:47:46,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 05:47:46,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 05:47:46,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 05:47:46,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 05:47:46,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 05:47:46,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 05:47:46,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 05:47:46,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 05:47:46,165 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 05:47:46,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 05:47:46,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 05:47:46,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 05:47:46,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 05:47:46,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 05:47:46,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 05:47:46,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 05:47:46,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 05:47:46,186 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-18 05:47:46,195 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 05:47:46,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 05:47:46,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 05:47:46,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 05:47:46,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 05:47:46,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 05:47:46,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 05:47:46,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 05:47:46,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 05:47:46,199 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 05:47:46,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 05:47:46,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 05:47:46,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 05:47:46,200 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 05:47:46,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 05:47:46,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 05:47:46,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 05:47:46,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-18 05:47:46,201 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-18 05:47:46,201 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-18 05:47:46,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 05:47:46,201 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-18 05:47:46,201 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 05:47:46,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 05:47:46,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 05:47:46,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 05:47:46,470 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 05:47:46,471 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 05:47:46,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers/parport.i.cil-2.c [2022-03-18 05:47:46,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d369e729d/72b5d35d7a934fc49b5a4fc3cac7d130/FLAGc8ff06cc7 [2022-03-18 05:47:47,281 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 05:47:47,281 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers/parport.i.cil-2.c [2022-03-18 05:47:47,339 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d369e729d/72b5d35d7a934fc49b5a4fc3cac7d130/FLAGc8ff06cc7 [2022-03-18 05:47:47,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d369e729d/72b5d35d7a934fc49b5a4fc3cac7d130 [2022-03-18 05:47:47,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 05:47:47,847 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 05:47:47,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 05:47:47,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 05:47:47,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 05:47:47,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 05:47:47" (1/1) ... [2022-03-18 05:47:47,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2702c551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:47:47, skipping insertion in model container [2022-03-18 05:47:47,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 05:47:47" (1/1) ... [2022-03-18 05:47:47,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 05:47:47,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 05:47:48,721 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] [2022-03-18 05:47:49,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 05:47:49,491 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 05:47:49,565 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] [2022-03-18 05:47:49,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 05:47:49,851 INFO L208 MainTranslator]: Completed translation [2022-03-18 05:47:49,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:47:49 WrapperNode [2022-03-18 05:47:49,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 05:47:49,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 05:47:49,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 05:47:49,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 05:47:49,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:47:49" (1/1) ... [2022-03-18 05:47:49,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:47:49" (1/1) ... [2022-03-18 05:47:49,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:47:49" (1/1) ... [2022-03-18 05:47:49,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:47:49" (1/1) ... [2022-03-18 05:47:50,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:47:49" (1/1) ... [2022-03-18 05:47:50,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:47:49" (1/1) ... [2022-03-18 05:47:50,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:47:49" (1/1) ... [2022-03-18 05:47:50,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 05:47:50,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 05:47:50,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 05:47:50,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 05:47:50,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:47:49" (1/1) ... [2022-03-18 05:47:50,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 05:47:50,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:47:50,252 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) [2022-03-18 05:47:50,268 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 [2022-03-18 05:47:50,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 05:47:50,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 05:47:50,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2022-03-18 05:47:50,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2022-03-18 05:47:50,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~TO~VOID [2022-03-18 05:47:50,295 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 05:47:50,295 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 05:47:50,295 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-03-18 05:47:50,295 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlIntegerToUnicodeString [2022-03-18 05:47:50,295 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlUnicodeStringToInteger [2022-03-18 05:47:50,295 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareUnicodeString [2022-03-18 05:47:50,295 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAppendUnicodeStringToString [2022-03-18 05:47:50,295 INFO L138 BoogieDeclarations]: Found implementation of procedure READ_PORT_UCHAR [2022-03-18 05:47:50,295 INFO L138 BoogieDeclarations]: Found implementation of procedure WRITE_PORT_UCHAR [2022-03-18 05:47:50,295 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-03-18 05:47:50,296 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedDecrement [2022-03-18 05:47:50,296 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-03-18 05:47:50,296 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeDpc [2022-03-18 05:47:50,296 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInsertQueueDpc [2022-03-18 05:47:50,296 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSynchronizeExecution [2022-03-18 05:47:50,296 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTimeIncrement [2022-03-18 05:47:50,296 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAcquireCancelSpinLock [2022-03-18 05:47:50,296 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateErrorLogEntry [2022-03-18 05:47:50,296 INFO L138 BoogieDeclarations]: Found implementation of procedure IoConnectInterrupt [2022-03-18 05:47:50,296 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReportResourceUsage [2022-03-18 05:47:50,296 INFO L138 BoogieDeclarations]: Found implementation of procedure IoInitializeRemoveLockEx [2022-03-18 05:47:50,296 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseRemoveLockEx [2022-03-18 05:47:50,297 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseRemoveLockAndWaitEx [2022-03-18 05:47:50,297 INFO L138 BoogieDeclarations]: Found implementation of procedure IoWriteErrorLogEntry [2022-03-18 05:47:50,297 INFO L138 BoogieDeclarations]: Found implementation of procedure IoWMIRegistrationControl [2022-03-18 05:47:50,297 INFO L138 BoogieDeclarations]: Found implementation of procedure IoOpenDeviceRegistryKey [2022-03-18 05:47:50,297 INFO L138 BoogieDeclarations]: Found implementation of procedure KeStallExecutionProcessor [2022-03-18 05:47:50,297 INFO L138 BoogieDeclarations]: Found implementation of procedure PoRequestPowerIrp [2022-03-18 05:47:50,297 INFO L138 BoogieDeclarations]: Found implementation of procedure PoSetPowerState [2022-03-18 05:47:50,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfReferenceObject [2022-03-18 05:47:50,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwQueryValueKey [2022-03-18 05:47:50,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwSetValueKey [2022-03-18 05:47:50,297 INFO L138 BoogieDeclarations]: Found implementation of procedure WmiCompleteRequest [2022-03-18 05:47:50,297 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-18 05:47:50,298 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchCleanup [2022-03-18 05:47:50,298 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDebugDumpPnpIrpInfo [2022-03-18 05:47:50,298 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLock [2022-03-18 05:47:50,298 INFO L138 BoogieDeclarations]: Found implementation of procedure PptReleaseRemoveLock [2022-03-18 05:47:50,298 INFO L138 BoogieDeclarations]: Found implementation of procedure PptReleaseRemoveLockAndWait [2022-03-18 05:47:50,298 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDebugDumpResourceList [2022-03-18 05:47:50,298 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDebugDumpResourceRequirementsList [2022-03-18 05:47:50,298 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLogError [2022-03-18 05:47:50,298 INFO L138 BoogieDeclarations]: Found implementation of procedure DriverEntry [2022-03-18 05:47:50,298 INFO L138 BoogieDeclarations]: Found implementation of procedure PptUnload [2022-03-18 05:47:50,298 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCleanRemovalRelationsList [2022-03-18 05:47:50,298 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAddPptRemovalRelation [2022-03-18 05:47:50,298 INFO L138 BoogieDeclarations]: Found implementation of procedure PptRemovePptRemovalRelation [2022-03-18 05:47:50,299 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDumpRemovalRelationsList [2022-03-18 05:47:50,299 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDumpPptRemovalRelationsStruct [2022-03-18 05:47:50,299 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchInternalDeviceControl [2022-03-18 05:47:50,299 INFO L138 BoogieDeclarations]: Found implementation of procedure PptIsNecR98Machine [2022-03-18 05:47:50,299 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchCreate [2022-03-18 05:47:50,299 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchClose [2022-03-18 05:47:50,299 INFO L138 BoogieDeclarations]: Found implementation of procedure PptInitiate1284_3 [2022-03-18 05:47:50,299 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectDevice [2022-03-18 05:47:50,299 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectDevice [2022-03-18 05:47:50,299 INFO L138 BoogieDeclarations]: Found implementation of procedure Ppt1284_3AssignAddress [2022-03-18 05:47:50,299 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCheckIfNon1284_3Present [2022-03-18 05:47:50,299 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCheckIfStl1284_3 [2022-03-18 05:47:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCheckIfStlProductId [2022-03-18 05:47:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSend1284_3Command [2022-03-18 05:47:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectChipFilter [2022-03-18 05:47:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectPortType [2022-03-18 05:47:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectPortCapabilities [2022-03-18 05:47:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEcpPort [2022-03-18 05:47:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEppPortIfDot3DevicePresent [2022-03-18 05:47:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEppPortIfUserRequested [2022-03-18 05:47:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEppPort [2022-03-18 05:47:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectBytePort [2022-03-18 05:47:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoDepth [2022-03-18 05:47:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoWidth [2022-03-18 05:47:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetChipMode [2022-03-18 05:47:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure PptClearChipMode [2022-03-18 05:47:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrSetMode [2022-03-18 05:47:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetByteMode [2022-03-18 05:47:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure PptClearByteMode [2022-03-18 05:47:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCheckByteMode [2022-03-18 05:47:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrClearMode [2022-03-18 05:47:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFindNatChip [2022-03-18 05:47:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure PptBuildResourceList [2022-03-18 05:47:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpBuildRemovalRelations [2022-03-18 05:47:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStartScanPciCardCmResourceList [2022-03-18 05:47:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure PptIsPci [2022-03-18 05:47:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCompleteRequest [2022-03-18 05:47:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpInitDispatchFunctionTable [2022-03-18 05:47:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpAddDevice [2022-03-18 05:47:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchPnp [2022-03-18 05:47:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStartDevice [2022-03-18 05:47:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStartScanCmResourceList [2022-03-18 05:47:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStartValidateResources [2022-03-18 05:47:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterResourceRequirements [2022-03-18 05:47:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterExistsNonIrqResourceList [2022-03-18 05:47:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterRemoveIrqResourceLists [2022-03-18 05:47:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterGetEndOfResourceRequirementsList [2022-03-18 05:47:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterNukeIrqResourceDescriptorsFromAllLists [2022-03-18 05:47:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterNukeIrqResourceDescriptors [2022-03-18 05:47:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpQueryDeviceRelations [2022-03-18 05:47:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpQueryStopDevice [2022-03-18 05:47:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpCancelStopDevice [2022-03-18 05:47:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpStopDevice [2022-03-18 05:47:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpQueryRemoveDevice [2022-03-18 05:47:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpCancelRemoveDevice [2022-03-18 05:47:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpRemoveDevice [2022-03-18 05:47:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpSurpriseRemoval [2022-03-18 05:47:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpListContainsIrqResourceDescriptor [2022-03-18 05:47:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpBounceAndCatchPnpIrp [2022-03-18 05:47:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2022-03-18 05:47:50,304 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpUnhandledIrp [2022-03-18 05:47:50,304 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPowerComplete [2022-03-18 05:47:50,304 INFO L138 BoogieDeclarations]: Found implementation of procedure InitNEC_98 [2022-03-18 05:47:50,304 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchPower [2022-03-18 05:47:50,304 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockDiskModeByte [2022-03-18 05:47:50,304 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockPrtModeByte [2022-03-18 05:47:50,304 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipSetDiskMode [2022-03-18 05:47:50,304 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipCheckDevice [2022-03-18 05:47:50,304 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectLegacyZip [2022-03-18 05:47:50,304 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectLegacyZip [2022-03-18 05:47:50,304 INFO L138 BoogieDeclarations]: Found implementation of procedure PptRegInitDriverSettings [2022-03-18 05:47:50,304 INFO L138 BoogieDeclarations]: Found implementation of procedure PptRegGetDeviceParameterDword [2022-03-18 05:47:50,304 INFO L138 BoogieDeclarations]: Found implementation of procedure PptRegSetDeviceParameterDword [2022-03-18 05:47:50,305 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFailRequest [2022-03-18 05:47:50,305 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLockOrFailIrp [2022-03-18 05:47:50,305 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchPreProcessIrp [2022-03-18 05:47:50,305 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchPostProcessIrp [2022-03-18 05:47:50,305 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchCompletionRoutine [2022-03-18 05:47:50,305 INFO L138 BoogieDeclarations]: Found implementation of procedure PptGetPortNameFromPhysicalDeviceObject [2022-03-18 05:47:50,305 INFO L138 BoogieDeclarations]: Found implementation of procedure PptConnectInterrupt [2022-03-18 05:47:50,305 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDisconnectInterrupt [2022-03-18 05:47:50,305 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedIncrement [2022-03-18 05:47:50,305 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedDecrement [2022-03-18 05:47:50,305 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedRead [2022-03-18 05:47:50,305 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedQueue [2022-03-18 05:47:50,306 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedDisconnect [2022-03-18 05:47:50,306 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCancelRoutine [2022-03-18 05:47:50,306 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFreePortDpc [2022-03-18 05:47:50,306 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTryAllocatePortAtInterruptLevel [2022-03-18 05:47:50,306 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFreePortFromInterruptLevel [2022-03-18 05:47:50,306 INFO L138 BoogieDeclarations]: Found implementation of procedure PptInterruptService [2022-03-18 05:47:50,306 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTryAllocatePort [2022-03-18 05:47:50,306 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTraversePortCheckList [2022-03-18 05:47:50,306 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFreePort [2022-03-18 05:47:50,306 INFO L138 BoogieDeclarations]: Found implementation of procedure PptQueryNumWaiters [2022-03-18 05:47:50,306 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetCancelRoutine [2022-03-18 05:47:50,306 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTickCount [2022-03-18 05:47:50,307 INFO L138 BoogieDeclarations]: Found implementation of procedure CheckPort [2022-03-18 05:47:50,307 INFO L138 BoogieDeclarations]: Found implementation of procedure PptBuildParallelPortDeviceName [2022-03-18 05:47:50,307 INFO L138 BoogieDeclarations]: Found implementation of procedure PptInitializeDeviceExtension [2022-03-18 05:47:50,307 INFO L138 BoogieDeclarations]: Found implementation of procedure PptGetPortNumberFromLptName [2022-03-18 05:47:50,307 INFO L138 BoogieDeclarations]: Found implementation of procedure PptBuildDeviceObject [2022-03-18 05:47:50,307 INFO L138 BoogieDeclarations]: Found implementation of procedure PptWmiInitWmi [2022-03-18 05:47:50,307 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchSystemControl [2022-03-18 05:47:50,307 INFO L138 BoogieDeclarations]: Found implementation of procedure PptWmiQueryWmiRegInfo [2022-03-18 05:47:50,307 INFO L138 BoogieDeclarations]: Found implementation of procedure PptWmiQueryWmiDataBlock [2022-03-18 05:47:50,307 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-18 05:47:50,307 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-18 05:47:50,307 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 05:47:50,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAcquireFastMutex [2022-03-18 05:47:50,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ExReleaseFastMutex [2022-03-18 05:47:50,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-03-18 05:47:50,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ExFreePool [2022-03-18 05:47:50,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertHeadList [2022-03-18 05:47:50,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-03-18 05:47:50,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedRemoveHeadList [2022-03-18 05:47:50,308 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAllocateMdl [2022-03-18 05:47:50,353 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAttachDeviceToDeviceStack [2022-03-18 05:47:50,354 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildAsynchronousFsdRequest [2022-03-18 05:47:50,354 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-18 05:47:50,354 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateDevice [2022-03-18 05:47:50,354 INFO L138 BoogieDeclarations]: Found implementation of procedure IoCreateSymbolicLink [2022-03-18 05:47:50,354 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteDevice [2022-03-18 05:47:50,354 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-03-18 05:47:50,354 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDetachDevice [2022-03-18 05:47:50,354 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeIrp [2022-03-18 05:47:50,354 INFO L138 BoogieDeclarations]: Found implementation of procedure IoFreeMdl [2022-03-18 05:47:50,354 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-03-18 05:47:50,354 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-03-18 05:47:50,355 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-03-18 05:47:50,355 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReleaseCancelSpinLock [2022-03-18 05:47:50,355 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-03-18 05:47:50,355 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetHardErrorOrVerifyDevice [2022-03-18 05:47:50,355 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-18 05:47:50,355 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-18 05:47:50,355 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-18 05:47:50,355 INFO L138 BoogieDeclarations]: Found implementation of procedure KeAcquireSpinLockRaiseToDpc [2022-03-18 05:47:50,355 INFO L138 BoogieDeclarations]: Found implementation of procedure KeDelayExecutionThread [2022-03-18 05:47:50,355 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeEvent [2022-03-18 05:47:50,355 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSemaphore [2022-03-18 05:47:50,355 INFO L138 BoogieDeclarations]: Found implementation of procedure KeInitializeSpinLock [2022-03-18 05:47:50,355 INFO L138 BoogieDeclarations]: Found implementation of procedure KeReleaseSemaphore [2022-03-18 05:47:50,356 INFO L138 BoogieDeclarations]: Found implementation of procedure KfReleaseSpinLock [2022-03-18 05:47:50,356 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-18 05:47:50,356 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-18 05:47:50,356 INFO L138 BoogieDeclarations]: Found implementation of procedure MmAllocateContiguousMemory [2022-03-18 05:47:50,356 INFO L138 BoogieDeclarations]: Found implementation of procedure MmFreeContiguousMemory [2022-03-18 05:47:50,356 INFO L138 BoogieDeclarations]: Found implementation of procedure MmMapLockedPagesSpecifyCache [2022-03-18 05:47:50,356 INFO L138 BoogieDeclarations]: Found implementation of procedure MmPageEntireDriver [2022-03-18 05:47:50,356 INFO L138 BoogieDeclarations]: Found implementation of procedure MmResetDriverPaging [2022-03-18 05:47:50,356 INFO L138 BoogieDeclarations]: Found implementation of procedure MmUnlockPages [2022-03-18 05:47:50,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-03-18 05:47:50,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ObfDereferenceObject [2022-03-18 05:47:50,356 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-18 05:47:50,356 INFO L138 BoogieDeclarations]: Found implementation of procedure PoStartNextPowerIrp [2022-03-18 05:47:50,357 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-03-18 05:47:50,357 INFO L138 BoogieDeclarations]: Found implementation of procedure PsTerminateSystemThread [2022-03-18 05:47:50,357 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlAnsiStringToUnicodeString [2022-03-18 05:47:50,357 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareMemory [2022-03-18 05:47:50,357 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCopyUnicodeString [2022-03-18 05:47:50,357 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlDeleteRegistryValue [2022-03-18 05:47:50,357 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlFreeUnicodeString [2022-03-18 05:47:50,357 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitString [2022-03-18 05:47:50,357 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlInitUnicodeString [2022-03-18 05:47:50,357 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-03-18 05:47:50,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-18 05:47:50,357 INFO L138 BoogieDeclarations]: Found implementation of procedure WmiSystemControl [2022-03-18 05:47:50,357 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAcquireRemoveLockEx [2022-03-18 05:47:50,358 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-03-18 05:47:50,358 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-03-18 05:47:50,358 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-03-18 05:47:50,358 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 05:47:50,358 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 05:47:50,358 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 05:47:50,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 05:47:50,358 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 05:47:50,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-03-18 05:47:50,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-18 05:47:50,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 05:47:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-18 05:47:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2022-03-18 05:47:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-03-18 05:47:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-18 05:47:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-18 05:47:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2022-03-18 05:47:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2022-03-18 05:47:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-03-18 05:47:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure RtlDeleteRegistryValue [2022-03-18 05:47:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure RtlIntegerToUnicodeString [2022-03-18 05:47:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 05:47:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure RtlUnicodeStringToInteger [2022-03-18 05:47:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 05:47:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitString [2022-03-18 05:47:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure RtlInitUnicodeString [2022-03-18 05:47:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAnsiStringToUnicodeString [2022-03-18 05:47:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareUnicodeString [2022-03-18 05:47:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCopyUnicodeString [2022-03-18 05:47:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure RtlAppendUnicodeStringToString [2022-03-18 05:47:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure RtlFreeUnicodeString [2022-03-18 05:47:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareMemory [2022-03-18 05:47:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure READ_PORT_UCHAR [2022-03-18 05:47:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure WRITE_PORT_UCHAR [2022-03-18 05:47:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-03-18 05:47:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedDecrement [2022-03-18 05:47:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-03-18 05:47:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeDpc [2022-03-18 05:47:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure KeInsertQueueDpc [2022-03-18 05:47:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-18 05:47:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure KeSynchronizeExecution [2022-03-18 05:47:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeEvent [2022-03-18 05:47:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-18 05:47:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSemaphore [2022-03-18 05:47:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure KeReleaseSemaphore [2022-03-18 05:47:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure KeDelayExecutionThread [2022-03-18 05:47:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-18 05:47:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure KeInitializeSpinLock [2022-03-18 05:47:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure KfReleaseSpinLock [2022-03-18 05:47:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTimeIncrement [2022-03-18 05:47:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-03-18 05:47:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure ExFreePool [2022-03-18 05:47:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure ExAcquireFastMutex [2022-03-18 05:47:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure ExReleaseFastMutex [2022-03-18 05:47:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertHeadList [2022-03-18 05:47:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-03-18 05:47:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedRemoveHeadList [2022-03-18 05:47:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure MmUnlockPages [2022-03-18 05:47:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure MmMapLockedPagesSpecifyCache [2022-03-18 05:47:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure MmAllocateContiguousMemory [2022-03-18 05:47:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure MmFreeContiguousMemory [2022-03-18 05:47:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure MmResetDriverPaging [2022-03-18 05:47:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure MmPageEntireDriver [2022-03-18 05:47:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-03-18 05:47:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure PsTerminateSystemThread [2022-03-18 05:47:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure IoAcquireCancelSpinLock [2022-03-18 05:47:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateErrorLogEntry [2022-03-18 05:47:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-18 05:47:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure IoAllocateMdl [2022-03-18 05:47:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure IoAttachDeviceToDeviceStack [2022-03-18 05:47:50,364 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildAsynchronousFsdRequest [2022-03-18 05:47:50,364 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-18 05:47:50,364 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-18 05:47:50,364 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-18 05:47:50,364 INFO L130 BoogieDeclarations]: Found specification of procedure IoConnectInterrupt [2022-03-18 05:47:50,364 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2022-03-18 05:47:50,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-18 05:47:50,364 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateDevice [2022-03-18 05:47:50,364 INFO L130 BoogieDeclarations]: Found specification of procedure IoCreateSymbolicLink [2022-03-18 05:47:50,364 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteDevice [2022-03-18 05:47:50,364 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-03-18 05:47:50,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoDetachDevice [2022-03-18 05:47:50,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeIrp [2022-03-18 05:47:50,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoFreeMdl [2022-03-18 05:47:50,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-03-18 05:47:50,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-03-18 05:47:50,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseCancelSpinLock [2022-03-18 05:47:50,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoReportResourceUsage [2022-03-18 05:47:50,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetHardErrorOrVerifyDevice [2022-03-18 05:47:50,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoInitializeRemoveLockEx [2022-03-18 05:47:50,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoAcquireRemoveLockEx [2022-03-18 05:47:50,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseRemoveLockEx [2022-03-18 05:47:50,365 INFO L130 BoogieDeclarations]: Found specification of procedure IoReleaseRemoveLockAndWaitEx [2022-03-18 05:47:50,366 INFO L130 BoogieDeclarations]: Found specification of procedure IoWriteErrorLogEntry [2022-03-18 05:47:50,366 INFO L130 BoogieDeclarations]: Found specification of procedure IoWMIRegistrationControl [2022-03-18 05:47:50,366 INFO L130 BoogieDeclarations]: Found specification of procedure IoOpenDeviceRegistryKey [2022-03-18 05:47:50,366 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-03-18 05:47:50,366 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-03-18 05:47:50,366 INFO L130 BoogieDeclarations]: Found specification of procedure KeStallExecutionProcessor [2022-03-18 05:47:50,366 INFO L130 BoogieDeclarations]: Found specification of procedure PoRequestPowerIrp [2022-03-18 05:47:50,366 INFO L130 BoogieDeclarations]: Found specification of procedure PoSetPowerState [2022-03-18 05:47:50,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-18 05:47:50,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 05:47:50,366 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-18 05:47:50,366 INFO L130 BoogieDeclarations]: Found specification of procedure PoStartNextPowerIrp [2022-03-18 05:47:50,367 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-03-18 05:47:50,367 INFO L130 BoogieDeclarations]: Found specification of procedure ObfReferenceObject [2022-03-18 05:47:50,367 INFO L130 BoogieDeclarations]: Found specification of procedure ObfDereferenceObject [2022-03-18 05:47:50,367 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-18 05:47:50,367 INFO L130 BoogieDeclarations]: Found specification of procedure ZwQueryValueKey [2022-03-18 05:47:50,367 INFO L130 BoogieDeclarations]: Found specification of procedure ZwSetValueKey [2022-03-18 05:47:50,367 INFO L130 BoogieDeclarations]: Found specification of procedure WmiCompleteRequest [2022-03-18 05:47:50,367 INFO L130 BoogieDeclarations]: Found specification of procedure WmiSystemControl [2022-03-18 05:47:50,367 INFO L130 BoogieDeclarations]: Found specification of procedure PptCompleteRequest [2022-03-18 05:47:50,367 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-18 05:47:50,367 INFO L130 BoogieDeclarations]: Found specification of procedure PptWmiInitWmi [2022-03-18 05:47:50,367 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchSystemControl [2022-03-18 05:47:50,368 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpInitDispatchFunctionTable [2022-03-18 05:47:50,368 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpAddDevice [2022-03-18 05:47:50,368 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchPnp [2022-03-18 05:47:50,368 INFO L130 BoogieDeclarations]: Found specification of procedure PptFailRequest [2022-03-18 05:47:50,368 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchPreProcessIrp [2022-03-18 05:47:50,368 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchPostProcessIrp [2022-03-18 05:47:50,368 INFO L130 BoogieDeclarations]: Found specification of procedure DriverEntry [2022-03-18 05:47:50,368 INFO L130 BoogieDeclarations]: Found specification of procedure PptUnload [2022-03-18 05:47:50,368 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchCompletionRoutine [2022-03-18 05:47:50,368 INFO L130 BoogieDeclarations]: Found specification of procedure PptLogError [2022-03-18 05:47:50,368 INFO L130 BoogieDeclarations]: Found specification of procedure PptConnectInterrupt [2022-03-18 05:47:50,369 INFO L130 BoogieDeclarations]: Found specification of procedure PptDisconnectInterrupt [2022-03-18 05:47:50,369 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchCreate [2022-03-18 05:47:50,369 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchClose [2022-03-18 05:47:50,369 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedIncrement [2022-03-18 05:47:50,369 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedDecrement [2022-03-18 05:47:50,369 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedRead [2022-03-18 05:47:50,369 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedQueue [2022-03-18 05:47:50,369 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedDisconnect [2022-03-18 05:47:50,369 INFO L130 BoogieDeclarations]: Found specification of procedure PptCancelRoutine [2022-03-18 05:47:50,369 INFO L130 BoogieDeclarations]: Found specification of procedure PptFreePortDpc [2022-03-18 05:47:50,369 INFO L130 BoogieDeclarations]: Found specification of procedure PptTryAllocatePortAtInterruptLevel [2022-03-18 05:47:50,369 INFO L130 BoogieDeclarations]: Found specification of procedure PptFreePortFromInterruptLevel [2022-03-18 05:47:50,370 INFO L130 BoogieDeclarations]: Found specification of procedure PptInterruptService [2022-03-18 05:47:50,370 INFO L130 BoogieDeclarations]: Found specification of procedure PptTryAllocatePort [2022-03-18 05:47:50,370 INFO L130 BoogieDeclarations]: Found specification of procedure PptTraversePortCheckList [2022-03-18 05:47:50,370 INFO L130 BoogieDeclarations]: Found specification of procedure PptFreePort [2022-03-18 05:47:50,370 INFO L130 BoogieDeclarations]: Found specification of procedure PptQueryNumWaiters [2022-03-18 05:47:50,370 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchInternalDeviceControl [2022-03-18 05:47:50,370 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchCleanup [2022-03-18 05:47:50,370 INFO L130 BoogieDeclarations]: Found specification of procedure PptIsNecR98Machine [2022-03-18 05:47:50,370 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchPower [2022-03-18 05:47:50,370 INFO L130 BoogieDeclarations]: Found specification of procedure PptRegInitDriverSettings [2022-03-18 05:47:50,370 INFO L130 BoogieDeclarations]: Found specification of procedure PptGetPortNameFromPhysicalDeviceObject [2022-03-18 05:47:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetCancelRoutine [2022-03-18 05:47:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLockOrFailIrp [2022-03-18 05:47:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure PptDebugDumpPnpIrpInfo [2022-03-18 05:47:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLock [2022-03-18 05:47:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure PptReleaseRemoveLock [2022-03-18 05:47:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure PptReleaseRemoveLockAndWait [2022-03-18 05:47:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure PptDebugDumpResourceList [2022-03-18 05:47:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure PptDebugDumpResourceRequirementsList [2022-03-18 05:47:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectChipFilter [2022-03-18 05:47:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectPortType [2022-03-18 05:47:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetChipMode [2022-03-18 05:47:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure PptClearChipMode [2022-03-18 05:47:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure PptInitiate1284_3 [2022-03-18 05:47:50,372 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectDevice [2022-03-18 05:47:50,372 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectDevice [2022-03-18 05:47:50,372 INFO L130 BoogieDeclarations]: Found specification of procedure Ppt1284_3AssignAddress [2022-03-18 05:47:50,372 INFO L130 BoogieDeclarations]: Found specification of procedure PptSend1284_3Command [2022-03-18 05:47:50,372 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectLegacyZip [2022-03-18 05:47:50,372 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectLegacyZip [2022-03-18 05:47:50,372 INFO L130 BoogieDeclarations]: Found specification of procedure PptDumpRemovalRelationsList [2022-03-18 05:47:50,372 INFO L130 BoogieDeclarations]: Found specification of procedure PptRegGetDeviceParameterDword [2022-03-18 05:47:50,372 INFO L130 BoogieDeclarations]: Found specification of procedure PptRegSetDeviceParameterDword [2022-03-18 05:47:50,372 INFO L130 BoogieDeclarations]: Found specification of procedure PptBuildParallelPortDeviceName [2022-03-18 05:47:50,373 INFO L130 BoogieDeclarations]: Found specification of procedure PptInitializeDeviceExtension [2022-03-18 05:47:50,373 INFO L130 BoogieDeclarations]: Found specification of procedure PptGetPortNumberFromLptName [2022-03-18 05:47:50,373 INFO L130 BoogieDeclarations]: Found specification of procedure PptBuildDeviceObject [2022-03-18 05:47:50,373 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEppPort [2022-03-18 05:47:50,373 INFO L130 BoogieDeclarations]: Found specification of procedure PptCleanRemovalRelationsList [2022-03-18 05:47:50,373 INFO L130 BoogieDeclarations]: Found specification of procedure CheckPort [2022-03-18 05:47:50,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-03-18 05:47:50,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-03-18 05:47:50,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-03-18 05:47:50,373 INFO L130 BoogieDeclarations]: Found specification of procedure PptAddPptRemovalRelation [2022-03-18 05:47:50,373 INFO L130 BoogieDeclarations]: Found specification of procedure PptRemovePptRemovalRelation [2022-03-18 05:47:50,374 INFO L130 BoogieDeclarations]: Found specification of procedure PptDumpPptRemovalRelationsStruct [2022-03-18 05:47:50,374 INFO L130 BoogieDeclarations]: Found specification of procedure PptCheckIfStl1284_3 [2022-03-18 05:47:50,374 INFO L130 BoogieDeclarations]: Found specification of procedure PptCheckIfNon1284_3Present [2022-03-18 05:47:50,374 INFO L130 BoogieDeclarations]: Found specification of procedure PptCheckIfStlProductId [2022-03-18 05:47:50,374 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectPortCapabilities [2022-03-18 05:47:50,374 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEcpPort [2022-03-18 05:47:50,374 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEppPortIfDot3DevicePresent [2022-03-18 05:47:50,374 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEppPortIfUserRequested [2022-03-18 05:47:50,374 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectBytePort [2022-03-18 05:47:50,374 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoDepth [2022-03-18 05:47:50,374 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoWidth [2022-03-18 05:47:50,375 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrSetMode [2022-03-18 05:47:50,375 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrClearMode [2022-03-18 05:47:50,375 INFO L130 BoogieDeclarations]: Found specification of procedure PptFindNatChip [2022-03-18 05:47:50,375 INFO L130 BoogieDeclarations]: Found specification of procedure PptBuildResourceList [2022-03-18 05:47:50,375 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetByteMode [2022-03-18 05:47:50,375 INFO L130 BoogieDeclarations]: Found specification of procedure PptClearByteMode [2022-03-18 05:47:50,375 INFO L130 BoogieDeclarations]: Found specification of procedure PptCheckByteMode [2022-03-18 05:47:50,375 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2022-03-18 05:47:50,375 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterResourceRequirements [2022-03-18 05:47:50,375 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpQueryDeviceRelations [2022-03-18 05:47:50,375 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpQueryStopDevice [2022-03-18 05:47:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpCancelStopDevice [2022-03-18 05:47:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStopDevice [2022-03-18 05:47:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpQueryRemoveDevice [2022-03-18 05:47:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpCancelRemoveDevice [2022-03-18 05:47:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpRemoveDevice [2022-03-18 05:47:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpSurpriseRemoval [2022-03-18 05:47:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpUnhandledIrp [2022-03-18 05:47:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStartDevice [2022-03-18 05:47:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStartValidateResources [2022-03-18 05:47:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStartScanCmResourceList [2022-03-18 05:47:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2022-03-18 05:47:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterNukeIrqResourceDescriptors [2022-03-18 05:47:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterNukeIrqResourceDescriptorsFromAllLists [2022-03-18 05:47:50,377 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterExistsNonIrqResourceList [2022-03-18 05:47:50,377 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterGetEndOfResourceRequirementsList [2022-03-18 05:47:50,377 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpListContainsIrqResourceDescriptor [2022-03-18 05:47:50,377 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterRemoveIrqResourceLists [2022-03-18 05:47:50,377 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpBounceAndCatchPnpIrp [2022-03-18 05:47:50,377 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpBuildRemovalRelations [2022-03-18 05:47:50,377 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpStartScanPciCardCmResourceList [2022-03-18 05:47:50,377 INFO L130 BoogieDeclarations]: Found specification of procedure PptIsPci [2022-03-18 05:47:50,377 INFO L130 BoogieDeclarations]: Found specification of procedure PptPowerComplete [2022-03-18 05:47:50,377 INFO L130 BoogieDeclarations]: Found specification of procedure InitNEC_98 [2022-03-18 05:47:50,377 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockDiskModeByte [2022-03-18 05:47:50,378 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockPrtModeByte [2022-03-18 05:47:50,378 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipSetDiskMode [2022-03-18 05:47:50,378 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipCheckDevice [2022-03-18 05:47:50,378 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~TO~VOID [2022-03-18 05:47:50,378 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTickCount [2022-03-18 05:47:50,378 INFO L130 BoogieDeclarations]: Found specification of procedure PptWmiQueryWmiRegInfo [2022-03-18 05:47:50,378 INFO L130 BoogieDeclarations]: Found specification of procedure PptWmiQueryWmiDataBlock [2022-03-18 05:47:50,378 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-18 05:47:50,378 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-18 05:47:50,378 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 05:47:50,378 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-18 05:47:50,379 INFO L130 BoogieDeclarations]: Found specification of procedure KeAcquireSpinLockRaiseToDpc [2022-03-18 05:47:50,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 05:47:50,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 05:47:50,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-03-18 05:47:50,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 05:47:50,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-03-18 05:47:50,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-03-18 05:47:50,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-03-18 05:47:50,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-03-18 05:47:51,206 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 05:47:51,212 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 05:47:51,241 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:51,282 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:47:51,282 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:47:51,504 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:51,594 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !false; [2022-03-18 05:47:51,594 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume false; [2022-03-18 05:47:51,609 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:51,637 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-18 05:47:51,637 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-18 05:47:51,638 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:51,650 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:47:51,650 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:47:51,788 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:51,823 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-03-18 05:47:51,824 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-03-18 05:47:51,824 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:51,834 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:47:51,834 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:47:52,005 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:52,022 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:47:52,023 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:47:52,097 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:52,120 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-18 05:47:52,120 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-18 05:47:52,162 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:52,190 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2022-03-18 05:47:52,191 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2022-03-18 05:47:52,191 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:52,202 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-18 05:47:52,202 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-18 05:47:52,217 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:52,221 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:47:52,221 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:47:52,392 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:55,826 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume !false; [2022-03-18 05:47:55,826 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume false; [2022-03-18 05:47:57,946 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:57,950 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:47:57,951 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:47:58,049 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:58,049 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:58,602 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-03-18 05:47:58,603 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2022-03-18 05:47:58,603 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-03-18 05:47:58,603 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2022-03-18 05:47:58,817 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:58,822 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:47:58,822 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:47:58,938 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:58,944 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:47:58,944 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:47:59,410 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:59,420 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:47:59,421 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:47:59,421 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:59,432 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:47:59,432 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:47:59,452 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:59,458 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:47:59,458 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:47:59,458 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:59,463 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:47:59,463 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:47:59,463 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:59,471 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:47:59,471 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:47:59,576 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:59,581 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:47:59,581 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:47:59,590 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:59,594 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:47:59,594 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:47:59,661 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:59,665 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:47:59,666 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:47:59,676 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:47:59,680 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:47:59,680 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:48:00,101 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:48:00,105 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:48:00,105 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:48:00,114 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:48:00,156 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-18 05:48:00,156 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-18 05:48:00,162 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:48:00,432 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume !false; [2022-03-18 05:48:00,433 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume false; [2022-03-18 05:48:00,750 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:48:00,753 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:48:00,754 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:48:01,043 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:48:01,092 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-18 05:48:01,093 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-18 05:48:01,154 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:48:02,640 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2022-03-18 05:48:02,640 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2022-03-18 05:48:02,679 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:48:02,702 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-18 05:48:02,702 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-18 05:48:02,703 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:48:02,721 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-18 05:48:02,721 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-18 05:48:02,758 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:48:02,768 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-18 05:48:02,768 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-18 05:48:02,889 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:48:02,894 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 05:48:02,894 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 05:48:03,041 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 05:48:03,059 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-18 05:48:03,059 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-18 05:48:03,112 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 05:48:03,128 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 05:48:03,128 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2022-03-18 05:48:03,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:48:03 BoogieIcfgContainer [2022-03-18 05:48:03,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 05:48:03,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 05:48:03,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 05:48:03,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 05:48:03,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 05:47:47" (1/3) ... [2022-03-18 05:48:03,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e80cb02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 05:48:03, skipping insertion in model container [2022-03-18 05:48:03,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 05:47:49" (2/3) ... [2022-03-18 05:48:03,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e80cb02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 05:48:03, skipping insertion in model container [2022-03-18 05:48:03,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 05:48:03" (3/3) ... [2022-03-18 05:48:03,138 INFO L111 eAbstractionObserver]: Analyzing ICFG parport.i.cil-2.c [2022-03-18 05:48:03,142 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-18 05:48:03,142 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 05:48:03,179 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 05:48:03,184 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 [2022-03-18 05:48:03,184 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 05:48:03,227 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) [2022-03-18 05:48:03,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-18 05:48:03,234 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:48:03,235 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:48:03,235 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:48:03,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:48:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2073400986, now seen corresponding path program 1 times [2022-03-18 05:48:03,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:03,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1980649080] [2022-03-18 05:48:03,254 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 05:48:03,254 INFO L85 PathProgramCache]: Analyzing trace with hash -2073400986, now seen corresponding path program 2 times [2022-03-18 05:48:03,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:48:03,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780340328] [2022-03-18 05:48:03,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:48:03,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:48:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:03,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:48:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:04,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 05:48:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:04,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:48:04,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:48:04,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780340328] [2022-03-18 05:48:04,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780340328] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:04,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:48:04,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 05:48:04,037 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:48:04,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1980649080] [2022-03-18 05:48:04,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1980649080] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:04,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:48:04,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 05:48:04,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299464853] [2022-03-18 05:48:04,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:48:04,042 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 05:48:04,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:04,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 05:48:04,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-18 05:48:04,075 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) [2022-03-18 05:48:09,521 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 [] [2022-03-18 05:48:13,655 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 [] [2022-03-18 05:48:24,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:48:24,348 INFO L93 Difference]: Finished difference Result 4216 states and 6551 transitions. [2022-03-18 05:48:24,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 05:48:24,357 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 [2022-03-18 05:48:24,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:48:24,394 INFO L225 Difference]: With dead ends: 4216 [2022-03-18 05:48:24,394 INFO L226 Difference]: Without dead ends: 2226 [2022-03-18 05:48:24,412 INFO L911 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 [2022-03-18 05:48:24,418 INFO L912 BasicCegarLoop]: 2421 mSDtfsCounter, 3234 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 3764 mSolverCounterSat, 1561 mSolverCounterUnsat, 2 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, 3764 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:48:24,422 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3637 Valid, 2782 Invalid, 5327 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1561 Valid, 3764 Invalid, 2 Unknown, 0 Unchecked, 19.3s Time] [2022-03-18 05:48:24,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2022-03-18 05:48:25,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 1985. [2022-03-18 05:48:25,042 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) [2022-03-18 05:48:25,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2849 transitions. [2022-03-18 05:48:25,072 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2849 transitions. Word has length 22 [2022-03-18 05:48:25,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:48:25,072 INFO L478 AbstractCegarLoop]: Abstraction has 1985 states and 2849 transitions. [2022-03-18 05:48:25,073 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) [2022-03-18 05:48:25,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2849 transitions. [2022-03-18 05:48:25,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-18 05:48:25,074 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:48:25,074 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:48:25,074 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 05:48:25,074 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:48:25,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:48:25,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1828450504, now seen corresponding path program 1 times [2022-03-18 05:48:25,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:25,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [556876213] [2022-03-18 05:48:25,086 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:48:25,086 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:48:25,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1828450504, now seen corresponding path program 2 times [2022-03-18 05:48:25,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:48:25,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398441534] [2022-03-18 05:48:25,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:48:25,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:48:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:25,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:48:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:25,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:48:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:48:25,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:48:25,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398441534] [2022-03-18 05:48:25,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398441534] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:48:25,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667205467] [2022-03-18 05:48:25,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:48:25,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:48:25,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:48:25,500 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) [2022-03-18 05:48:25,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 05:48:26,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:48:26,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:48:26,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-18 05:48:26,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:48:26,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:48:26,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:48:26,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667205467] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:26,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:48:26,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-03-18 05:48:26,284 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:48:26,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [556876213] [2022-03-18 05:48:26,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [556876213] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:26,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:48:26,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 05:48:26,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378083735] [2022-03-18 05:48:26,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:48:26,288 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 05:48:26,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:26,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 05:48:26,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-18 05:48:26,288 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) [2022-03-18 05:48:27,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:48:27,047 INFO L93 Difference]: Finished difference Result 2005 states and 2875 transitions. [2022-03-18 05:48:27,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 05:48:27,048 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 [2022-03-18 05:48:27,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:48:27,061 INFO L225 Difference]: With dead ends: 2005 [2022-03-18 05:48:27,061 INFO L226 Difference]: Without dead ends: 1985 [2022-03-18 05:48:27,063 INFO L911 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 [2022-03-18 05:48:27,067 INFO L912 BasicCegarLoop]: 2846 mSDtfsCounter, 7 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-03-18 05:48:27,068 INFO L913 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] [2022-03-18 05:48:27,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2022-03-18 05:48:27,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1985. [2022-03-18 05:48:27,596 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) [2022-03-18 05:48:27,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2848 transitions. [2022-03-18 05:48:27,609 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2848 transitions. Word has length 24 [2022-03-18 05:48:27,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:48:27,609 INFO L478 AbstractCegarLoop]: Abstraction has 1985 states and 2848 transitions. [2022-03-18 05:48:27,609 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) [2022-03-18 05:48:27,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2848 transitions. [2022-03-18 05:48:27,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-18 05:48:27,611 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:48:27,611 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:48:27,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 05:48:27,829 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 [2022-03-18 05:48:27,829 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:48:27,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:48:27,830 INFO L85 PathProgramCache]: Analyzing trace with hash -975584275, now seen corresponding path program 1 times [2022-03-18 05:48:27,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:27,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [328852013] [2022-03-18 05:48:27,835 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:48:27,835 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:48:27,836 INFO L85 PathProgramCache]: Analyzing trace with hash -975584275, now seen corresponding path program 2 times [2022-03-18 05:48:27,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:48:27,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572704937] [2022-03-18 05:48:27,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:48:27,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:48:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:28,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:48:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:28,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:48:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:28,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:48:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:48:28,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:48:28,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572704937] [2022-03-18 05:48:28,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572704937] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:48:28,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984953923] [2022-03-18 05:48:28,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:48:28,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:48:28,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:48:28,332 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) [2022-03-18 05:48:28,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 05:48:29,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:48:29,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:48:29,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-18 05:48:29,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:48:29,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:48:29,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:48:29,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984953923] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:29,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:48:29,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-03-18 05:48:29,156 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:48:29,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [328852013] [2022-03-18 05:48:29,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [328852013] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:29,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:48:29,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 05:48:29,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812914878] [2022-03-18 05:48:29,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:48:29,158 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 05:48:29,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:29,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 05:48:29,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:48:29,159 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) [2022-03-18 05:48:30,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:48:30,441 INFO L93 Difference]: Finished difference Result 5045 states and 7333 transitions. [2022-03-18 05:48:30,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 05:48:30,442 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 [2022-03-18 05:48:30,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:48:30,466 INFO L225 Difference]: With dead ends: 5045 [2022-03-18 05:48:30,466 INFO L226 Difference]: Without dead ends: 3732 [2022-03-18 05:48:30,474 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:48:30,479 INFO L912 BasicCegarLoop]: 3526 mSDtfsCounter, 2726 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2726 SdHoareTripleChecker+Valid, 6082 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:48:30,481 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2726 Valid, 6082 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 05:48:30,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3732 states. [2022-03-18 05:48:31,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3732 to 3711. [2022-03-18 05:48:31,304 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) [2022-03-18 05:48:31,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3711 states to 3711 states and 5386 transitions. [2022-03-18 05:48:31,326 INFO L78 Accepts]: Start accepts. Automaton has 3711 states and 5386 transitions. Word has length 33 [2022-03-18 05:48:31,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:48:31,326 INFO L478 AbstractCegarLoop]: Abstraction has 3711 states and 5386 transitions. [2022-03-18 05:48:31,326 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) [2022-03-18 05:48:31,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3711 states and 5386 transitions. [2022-03-18 05:48:31,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-18 05:48:31,335 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:48:31,335 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:48:31,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 05:48:31,561 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 [2022-03-18 05:48:31,561 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:48:31,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:48:31,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1905624997, now seen corresponding path program 1 times [2022-03-18 05:48:31,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:31,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [696614996] [2022-03-18 05:48:31,565 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:48:31,565 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:48:31,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1905624997, now seen corresponding path program 2 times [2022-03-18 05:48:31,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:48:31,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345186942] [2022-03-18 05:48:31,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:48:31,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:48:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:31,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:48:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:31,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:48:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:31,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:48:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:32,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 05:48:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:32,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:48:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:32,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:48:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:32,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:48:32,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:48:32,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345186942] [2022-03-18 05:48:32,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345186942] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:48:32,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210500388] [2022-03-18 05:48:32,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:48:32,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:48:32,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:48:32,080 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) [2022-03-18 05:48:32,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 05:48:32,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:48:32,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:48:32,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 1479 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-18 05:48:32,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:48:32,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:48:32,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:48:32,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210500388] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:32,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:48:32,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-03-18 05:48:32,867 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:48:32,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [696614996] [2022-03-18 05:48:32,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [696614996] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:32,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:48:32,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 05:48:32,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565451454] [2022-03-18 05:48:32,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:48:32,868 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 05:48:32,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:32,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 05:48:32,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:48:32,869 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) [2022-03-18 05:48:33,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:48:33,884 INFO L93 Difference]: Finished difference Result 3829 states and 5529 transitions. [2022-03-18 05:48:33,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 05:48:33,884 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 [2022-03-18 05:48:33,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:48:33,904 INFO L225 Difference]: With dead ends: 3829 [2022-03-18 05:48:33,904 INFO L226 Difference]: Without dead ends: 3810 [2022-03-18 05:48:33,906 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:48:33,908 INFO L912 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 [2022-03-18 05:48:33,909 INFO L913 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] [2022-03-18 05:48:33,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3810 states. [2022-03-18 05:48:34,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3810 to 3804. [2022-03-18 05:48:34,627 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) [2022-03-18 05:48:34,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 5497 transitions. [2022-03-18 05:48:34,641 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 5497 transitions. Word has length 49 [2022-03-18 05:48:34,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:48:34,642 INFO L478 AbstractCegarLoop]: Abstraction has 3804 states and 5497 transitions. [2022-03-18 05:48:34,642 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) [2022-03-18 05:48:34,642 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 5497 transitions. [2022-03-18 05:48:34,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-18 05:48:34,644 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:48:34,644 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:48:34,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-18 05:48:34,871 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 [2022-03-18 05:48:34,872 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:48:34,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:48:34,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1919969906, now seen corresponding path program 1 times [2022-03-18 05:48:34,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:34,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [488717584] [2022-03-18 05:48:34,875 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:48:34,875 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:48:34,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1919969906, now seen corresponding path program 2 times [2022-03-18 05:48:34,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:48:34,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534693313] [2022-03-18 05:48:34,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:48:34,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:48:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:35,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:48:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:35,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:48:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:35,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:48:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:35,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 05:48:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:35,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:48:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:35,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:48:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:35,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:48:35,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:48:35,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534693313] [2022-03-18 05:48:35,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534693313] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:48:35,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415240474] [2022-03-18 05:48:35,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:48:35,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:48:35,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:48:35,378 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) [2022-03-18 05:48:35,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-18 05:48:36,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:48:36,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:48:36,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-18 05:48:36,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:48:36,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:48:36,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:48:36,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415240474] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:36,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:48:36,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-03-18 05:48:36,208 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:48:36,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [488717584] [2022-03-18 05:48:36,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [488717584] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:36,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:48:36,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 05:48:36,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474816277] [2022-03-18 05:48:36,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:48:36,208 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 05:48:36,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:36,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 05:48:36,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:48:36,209 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) [2022-03-18 05:48:37,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:48:37,581 INFO L93 Difference]: Finished difference Result 4627 states and 6683 transitions. [2022-03-18 05:48:37,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 05:48:37,582 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 [2022-03-18 05:48:37,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:48:37,608 INFO L225 Difference]: With dead ends: 4627 [2022-03-18 05:48:37,608 INFO L226 Difference]: Without dead ends: 4622 [2022-03-18 05:48:37,611 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:48:37,612 INFO L912 BasicCegarLoop]: 4117 mSDtfsCounter, 1721 mSDsluCounter, 2715 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 6832 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:48:37,612 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1721 Valid, 6832 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 05:48:37,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4622 states. [2022-03-18 05:48:38,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4622 to 4578. [2022-03-18 05:48:38,626 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) [2022-03-18 05:48:38,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 6622 transitions. [2022-03-18 05:48:38,644 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 6622 transitions. Word has length 49 [2022-03-18 05:48:38,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:48:38,645 INFO L478 AbstractCegarLoop]: Abstraction has 4578 states and 6622 transitions. [2022-03-18 05:48:38,645 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) [2022-03-18 05:48:38,646 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 6622 transitions. [2022-03-18 05:48:38,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-18 05:48:38,648 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:48:38,648 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:48:38,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-18 05:48:38,871 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 [2022-03-18 05:48:38,871 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:48:38,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:48:38,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1061683448, now seen corresponding path program 1 times [2022-03-18 05:48:38,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:38,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1008274431] [2022-03-18 05:48:38,875 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:48:38,875 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:48:38,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1061683448, now seen corresponding path program 2 times [2022-03-18 05:48:38,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:48:38,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181589153] [2022-03-18 05:48:38,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:48:38,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:48:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:39,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:48:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:39,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:48:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:39,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:48:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:39,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 05:48:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:39,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:48:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:39,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:48:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:39,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:48:39,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:48:39,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181589153] [2022-03-18 05:48:39,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181589153] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:48:39,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247374449] [2022-03-18 05:48:39,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:48:39,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:48:39,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:48:39,336 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) [2022-03-18 05:48:39,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-18 05:48:40,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:48:40,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:48:40,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-18 05:48:40,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:48:40,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:48:40,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:48:40,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247374449] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:40,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:48:40,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-03-18 05:48:40,146 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:48:40,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1008274431] [2022-03-18 05:48:40,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1008274431] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:40,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:48:40,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 05:48:40,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999454155] [2022-03-18 05:48:40,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:48:40,146 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 05:48:40,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:40,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 05:48:40,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:48:40,147 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) [2022-03-18 05:48:41,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:48:41,284 INFO L93 Difference]: Finished difference Result 4593 states and 6640 transitions. [2022-03-18 05:48:41,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 05:48:41,285 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 [2022-03-18 05:48:41,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:48:41,310 INFO L225 Difference]: With dead ends: 4593 [2022-03-18 05:48:41,310 INFO L226 Difference]: Without dead ends: 4552 [2022-03-18 05:48:41,313 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:48:41,314 INFO L912 BasicCegarLoop]: 2840 mSDtfsCounter, 5 mSDsluCounter, 8501 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:48:41,314 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 11341 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 05:48:41,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4552 states. [2022-03-18 05:48:42,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4552 to 4552. [2022-03-18 05:48:42,171 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) [2022-03-18 05:48:42,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4552 states to 4552 states and 6585 transitions. [2022-03-18 05:48:42,188 INFO L78 Accepts]: Start accepts. Automaton has 4552 states and 6585 transitions. Word has length 50 [2022-03-18 05:48:42,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:48:42,189 INFO L478 AbstractCegarLoop]: Abstraction has 4552 states and 6585 transitions. [2022-03-18 05:48:42,189 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) [2022-03-18 05:48:42,189 INFO L276 IsEmpty]: Start isEmpty. Operand 4552 states and 6585 transitions. [2022-03-18 05:48:42,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-18 05:48:42,191 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:48:42,191 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:48:42,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-18 05:48:42,419 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 [2022-03-18 05:48:42,419 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:48:42,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:48:42,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1755528464, now seen corresponding path program 1 times [2022-03-18 05:48:42,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:42,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [937150011] [2022-03-18 05:48:42,423 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:48:42,423 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:48:42,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1755528464, now seen corresponding path program 2 times [2022-03-18 05:48:42,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:48:42,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483029409] [2022-03-18 05:48:42,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:48:42,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:48:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:42,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:48:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:42,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:48:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:42,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:48:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:42,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 05:48:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:42,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:48:42,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:48:42,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483029409] [2022-03-18 05:48:42,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483029409] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:48:42,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126003325] [2022-03-18 05:48:42,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:48:42,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:48:42,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:48:42,810 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) [2022-03-18 05:48:42,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-18 05:48:43,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:48:43,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:48:43,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 1578 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 05:48:43,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:48:43,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:48:43,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:48:43,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126003325] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:43,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:48:43,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-03-18 05:48:43,680 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:48:43,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [937150011] [2022-03-18 05:48:43,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [937150011] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:43,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:48:43,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 05:48:43,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846339525] [2022-03-18 05:48:43,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:48:43,681 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 05:48:43,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:43,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 05:48:43,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:48:43,682 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) [2022-03-18 05:48:44,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:48:44,585 INFO L93 Difference]: Finished difference Result 7500 states and 10838 transitions. [2022-03-18 05:48:44,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 05:48:44,586 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 [2022-03-18 05:48:44,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:48:44,607 INFO L225 Difference]: With dead ends: 7500 [2022-03-18 05:48:44,607 INFO L226 Difference]: Without dead ends: 4606 [2022-03-18 05:48:44,618 INFO L911 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 [2022-03-18 05:48:44,618 INFO L912 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 [2022-03-18 05:48:44,619 INFO L913 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] [2022-03-18 05:48:44,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4606 states. [2022-03-18 05:48:45,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4606 to 4521. [2022-03-18 05:48:45,576 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) [2022-03-18 05:48:45,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4521 states to 4521 states and 6531 transitions. [2022-03-18 05:48:45,592 INFO L78 Accepts]: Start accepts. Automaton has 4521 states and 6531 transitions. Word has length 51 [2022-03-18 05:48:45,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:48:45,593 INFO L478 AbstractCegarLoop]: Abstraction has 4521 states and 6531 transitions. [2022-03-18 05:48:45,593 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) [2022-03-18 05:48:45,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4521 states and 6531 transitions. [2022-03-18 05:48:45,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-18 05:48:45,595 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:48:45,595 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:48:45,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-18 05:48:45,822 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 [2022-03-18 05:48:45,822 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:48:45,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:48:45,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1561391810, now seen corresponding path program 1 times [2022-03-18 05:48:45,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:45,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [697619647] [2022-03-18 05:48:45,825 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:48:45,825 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:48:45,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1561391810, now seen corresponding path program 2 times [2022-03-18 05:48:45,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:48:45,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241803763] [2022-03-18 05:48:45,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:48:45,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:48:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:46,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:48:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:46,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:48:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:46,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:48:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:46,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 05:48:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:46,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:48:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:46,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:48:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:46,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:48:46,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:48:46,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241803763] [2022-03-18 05:48:46,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241803763] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:48:46,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134836922] [2022-03-18 05:48:46,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:48:46,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:48:46,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:48:46,309 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) [2022-03-18 05:48:46,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-18 05:48:47,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:48:47,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:48:47,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-18 05:48:47,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:48:47,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:48:47,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:48:47,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134836922] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:47,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:48:47,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-03-18 05:48:47,367 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:48:47,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [697619647] [2022-03-18 05:48:47,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [697619647] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:47,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:48:47,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 05:48:47,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74790707] [2022-03-18 05:48:47,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:48:47,368 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 05:48:47,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:47,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 05:48:47,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:48:47,369 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) [2022-03-18 05:48:48,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:48:48,344 INFO L93 Difference]: Finished difference Result 4536 states and 6549 transitions. [2022-03-18 05:48:48,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 05:48:48,344 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 [2022-03-18 05:48:48,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:48:48,360 INFO L225 Difference]: With dead ends: 4536 [2022-03-18 05:48:48,360 INFO L226 Difference]: Without dead ends: 4518 [2022-03-18 05:48:48,362 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:48:48,362 INFO L912 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 [2022-03-18 05:48:48,363 INFO L913 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] [2022-03-18 05:48:48,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4518 states. [2022-03-18 05:48:49,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4518 to 4518. [2022-03-18 05:48:49,235 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) [2022-03-18 05:48:49,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4518 states to 4518 states and 6526 transitions. [2022-03-18 05:48:49,249 INFO L78 Accepts]: Start accepts. Automaton has 4518 states and 6526 transitions. Word has length 57 [2022-03-18 05:48:49,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:48:49,249 INFO L478 AbstractCegarLoop]: Abstraction has 4518 states and 6526 transitions. [2022-03-18 05:48:49,249 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) [2022-03-18 05:48:49,249 INFO L276 IsEmpty]: Start isEmpty. Operand 4518 states and 6526 transitions. [2022-03-18 05:48:49,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-18 05:48:49,253 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:48:49,254 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:48:49,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-18 05:48:49,479 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 [2022-03-18 05:48:49,479 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:48:49,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:48:49,480 INFO L85 PathProgramCache]: Analyzing trace with hash 111621356, now seen corresponding path program 1 times [2022-03-18 05:48:49,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:49,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1960616200] [2022-03-18 05:48:49,486 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:48:49,486 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:48:49,487 INFO L85 PathProgramCache]: Analyzing trace with hash 111621356, now seen corresponding path program 2 times [2022-03-18 05:48:49,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:48:49,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303533197] [2022-03-18 05:48:49,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:48:49,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:48:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:49,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:48:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:49,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:48:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:49,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:48:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:49,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 05:48:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:49,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:48:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:49,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:48:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:48:49,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:48:49,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303533197] [2022-03-18 05:48:49,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303533197] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:48:49,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343204998] [2022-03-18 05:48:49,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:48:49,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:48:49,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:48:49,894 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) [2022-03-18 05:48:49,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-18 05:48:50,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:48:50,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:48:50,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-18 05:48:50,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:48:50,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:48:50,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:48:50,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343204998] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:50,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:48:50,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-03-18 05:48:50,851 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:48:50,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1960616200] [2022-03-18 05:48:50,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1960616200] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:50,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:48:50,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 05:48:50,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582648811] [2022-03-18 05:48:50,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:48:50,852 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 05:48:50,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:50,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 05:48:50,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:48:50,852 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) [2022-03-18 05:48:51,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:48:51,753 INFO L93 Difference]: Finished difference Result 4533 states and 6544 transitions. [2022-03-18 05:48:51,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 05:48:51,754 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 [2022-03-18 05:48:51,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:48:51,767 INFO L225 Difference]: With dead ends: 4533 [2022-03-18 05:48:51,768 INFO L226 Difference]: Without dead ends: 4509 [2022-03-18 05:48:51,769 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:48:51,769 INFO L912 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 [2022-03-18 05:48:51,770 INFO L913 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] [2022-03-18 05:48:51,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4509 states. [2022-03-18 05:48:52,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4509 to 4509. [2022-03-18 05:48:52,550 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) [2022-03-18 05:48:52,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4509 states to 4509 states and 6514 transitions. [2022-03-18 05:48:52,566 INFO L78 Accepts]: Start accepts. Automaton has 4509 states and 6514 transitions. Word has length 54 [2022-03-18 05:48:52,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:48:52,566 INFO L478 AbstractCegarLoop]: Abstraction has 4509 states and 6514 transitions. [2022-03-18 05:48:52,567 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) [2022-03-18 05:48:52,567 INFO L276 IsEmpty]: Start isEmpty. Operand 4509 states and 6514 transitions. [2022-03-18 05:48:52,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-18 05:48:52,568 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:48:52,568 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:48:52,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-18 05:48:52,795 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 [2022-03-18 05:48:52,796 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:48:52,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:48:52,796 INFO L85 PathProgramCache]: Analyzing trace with hash -851908546, now seen corresponding path program 1 times [2022-03-18 05:48:52,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:52,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1539802108] [2022-03-18 05:48:52,800 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:48:52,800 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:48:52,800 INFO L85 PathProgramCache]: Analyzing trace with hash -851908546, now seen corresponding path program 2 times [2022-03-18 05:48:52,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:48:52,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482901731] [2022-03-18 05:48:52,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:48:52,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:48:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:53,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:48:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:53,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:48:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:53,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:48:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:53,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 05:48:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:53,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:48:53,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:48:53,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482901731] [2022-03-18 05:48:53,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482901731] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:48:53,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54958801] [2022-03-18 05:48:53,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:48:53,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:48:53,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:48:53,154 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) [2022-03-18 05:48:53,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-18 05:48:54,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:48:54,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:48:54,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 05:48:54,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:48:54,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:48:54,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:48:54,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54958801] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:54,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:48:54,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-03-18 05:48:54,138 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:48:54,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1539802108] [2022-03-18 05:48:54,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1539802108] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:54,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:48:54,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 05:48:54,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245832892] [2022-03-18 05:48:54,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:48:54,139 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 05:48:54,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:54,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 05:48:54,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-18 05:48:54,140 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) [2022-03-18 05:48:55,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:48:55,133 INFO L93 Difference]: Finished difference Result 4523 states and 6532 transitions. [2022-03-18 05:48:55,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 05:48:55,133 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 [2022-03-18 05:48:55,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:48:55,152 INFO L225 Difference]: With dead ends: 4523 [2022-03-18 05:48:55,152 INFO L226 Difference]: Without dead ends: 4520 [2022-03-18 05:48:55,155 INFO L911 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 [2022-03-18 05:48:55,156 INFO L912 BasicCegarLoop]: 2778 mSDtfsCounter, 33 mSDsluCounter, 2713 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 5491 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:48:55,156 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 5491 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 05:48:55,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4520 states. [2022-03-18 05:48:55,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4520 to 4517. [2022-03-18 05:48:56,000 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) [2022-03-18 05:48:56,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 6526 transitions. [2022-03-18 05:48:56,015 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 6526 transitions. Word has length 51 [2022-03-18 05:48:56,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:48:56,015 INFO L478 AbstractCegarLoop]: Abstraction has 4517 states and 6526 transitions. [2022-03-18 05:48:56,015 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) [2022-03-18 05:48:56,015 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 6526 transitions. [2022-03-18 05:48:56,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 05:48:56,017 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:48:56,017 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:48:56,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-18 05:48:56,231 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 [2022-03-18 05:48:56,231 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:48:56,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:48:56,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1656471014, now seen corresponding path program 1 times [2022-03-18 05:48:56,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:56,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [787320998] [2022-03-18 05:48:56,236 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:48:56,236 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:48:56,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1656471014, now seen corresponding path program 2 times [2022-03-18 05:48:56,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:48:56,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491551636] [2022-03-18 05:48:56,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:48:56,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:48:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:56,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:48:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:56,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:48:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:56,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:48:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:56,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:48:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:56,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 05:48:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:56,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:48:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:56,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 05:48:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:56,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:48:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:56,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:48:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:56,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:48:56,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:48:56,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491551636] [2022-03-18 05:48:56,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491551636] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:48:56,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946295726] [2022-03-18 05:48:56,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:48:56,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:48:56,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:48:56,783 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) [2022-03-18 05:48:56,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-18 05:48:57,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:48:57,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:48:57,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 05:48:57,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:48:57,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:48:57,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:48:57,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946295726] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:57,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:48:57,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-03-18 05:48:57,805 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:48:57,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [787320998] [2022-03-18 05:48:57,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [787320998] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:48:57,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:48:57,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 05:48:57,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873438353] [2022-03-18 05:48:57,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:48:57,806 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 05:48:57,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:57,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 05:48:57,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-18 05:48:57,807 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) [2022-03-18 05:48:58,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:48:58,627 INFO L93 Difference]: Finished difference Result 8386 states and 12110 transitions. [2022-03-18 05:48:58,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 05:48:58,628 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 [2022-03-18 05:48:58,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:48:58,642 INFO L225 Difference]: With dead ends: 8386 [2022-03-18 05:48:58,642 INFO L226 Difference]: Without dead ends: 4521 [2022-03-18 05:48:58,655 INFO L911 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 [2022-03-18 05:48:58,656 INFO L912 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 [2022-03-18 05:48:58,656 INFO L913 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] [2022-03-18 05:48:58,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2022-03-18 05:48:59,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 4521. [2022-03-18 05:48:59,439 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) [2022-03-18 05:48:59,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4521 states to 4521 states and 6531 transitions. [2022-03-18 05:48:59,450 INFO L78 Accepts]: Start accepts. Automaton has 4521 states and 6531 transitions. Word has length 69 [2022-03-18 05:48:59,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:48:59,451 INFO L478 AbstractCegarLoop]: Abstraction has 4521 states and 6531 transitions. [2022-03-18 05:48:59,451 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) [2022-03-18 05:48:59,451 INFO L276 IsEmpty]: Start isEmpty. Operand 4521 states and 6531 transitions. [2022-03-18 05:48:59,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 05:48:59,452 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:48:59,452 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:48:59,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-03-18 05:48:59,659 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 [2022-03-18 05:48:59,660 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:48:59,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:48:59,660 INFO L85 PathProgramCache]: Analyzing trace with hash 454819355, now seen corresponding path program 1 times [2022-03-18 05:48:59,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:48:59,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [598668461] [2022-03-18 05:48:59,662 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:48:59,662 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:48:59,662 INFO L85 PathProgramCache]: Analyzing trace with hash 454819355, now seen corresponding path program 2 times [2022-03-18 05:48:59,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:48:59,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551367977] [2022-03-18 05:48:59,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:48:59,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:48:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:59,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:48:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:48:59,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:48:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:00,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:49:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:00,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:49:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:00,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 05:49:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:00,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:00,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 05:49:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:00,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:00,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:00,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:49:00,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:49:00,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551367977] [2022-03-18 05:49:00,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551367977] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:49:00,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546555530] [2022-03-18 05:49:00,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:49:00,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:49:00,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:49:00,124 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) [2022-03-18 05:49:00,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-18 05:49:01,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:49:01,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:49:01,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-18 05:49:01,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:49:01,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:49:01,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:49:01,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546555530] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:01,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:49:01,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-03-18 05:49:01,184 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:49:01,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [598668461] [2022-03-18 05:49:01,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [598668461] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:01,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:49:01,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:49:01,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688014515] [2022-03-18 05:49:01,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:49:01,185 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 05:49:01,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:01,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 05:49:01,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-18 05:49:01,186 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) [2022-03-18 05:49:01,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:49:01,987 INFO L93 Difference]: Finished difference Result 7729 states and 11118 transitions. [2022-03-18 05:49:01,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 05:49:01,987 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 [2022-03-18 05:49:01,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:49:02,009 INFO L225 Difference]: With dead ends: 7729 [2022-03-18 05:49:02,009 INFO L226 Difference]: Without dead ends: 4396 [2022-03-18 05:49:02,024 INFO L911 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 [2022-03-18 05:49:02,025 INFO L912 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 [2022-03-18 05:49:02,025 INFO L913 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] [2022-03-18 05:49:02,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4396 states. [2022-03-18 05:49:02,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4396 to 4393. [2022-03-18 05:49:02,898 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) [2022-03-18 05:49:02,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4393 states to 4393 states and 6309 transitions. [2022-03-18 05:49:02,908 INFO L78 Accepts]: Start accepts. Automaton has 4393 states and 6309 transitions. Word has length 69 [2022-03-18 05:49:02,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:49:02,908 INFO L478 AbstractCegarLoop]: Abstraction has 4393 states and 6309 transitions. [2022-03-18 05:49:02,908 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) [2022-03-18 05:49:02,908 INFO L276 IsEmpty]: Start isEmpty. Operand 4393 states and 6309 transitions. [2022-03-18 05:49:02,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-18 05:49:02,909 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:49:02,909 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:49:02,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-03-18 05:49:03,110 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 [2022-03-18 05:49:03,110 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:49:03,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:49:03,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1515186020, now seen corresponding path program 1 times [2022-03-18 05:49:03,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:03,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1103420105] [2022-03-18 05:49:03,113 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:49:03,113 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:49:03,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1515186020, now seen corresponding path program 2 times [2022-03-18 05:49:03,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:49:03,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220842411] [2022-03-18 05:49:03,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:49:03,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:49:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:03,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:49:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:03,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:49:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:03,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:49:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:03,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 05:49:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:03,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:49:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:03,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:03,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:49:03,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:49:03,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220842411] [2022-03-18 05:49:03,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220842411] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:49:03,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62721411] [2022-03-18 05:49:03,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:49:03,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:49:03,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:49:03,514 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) [2022-03-18 05:49:03,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-18 05:49:04,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:49:04,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:49:04,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 05:49:04,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:49:04,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:49:04,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:49:04,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62721411] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:04,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:49:04,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-03-18 05:49:04,468 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:49:04,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1103420105] [2022-03-18 05:49:04,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1103420105] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:04,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:49:04,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:49:04,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372564939] [2022-03-18 05:49:04,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:49:04,468 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:49:04,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:04,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:49:04,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:49:04,470 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) [2022-03-18 05:49:05,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:49:05,174 INFO L93 Difference]: Finished difference Result 4436 states and 6360 transitions. [2022-03-18 05:49:05,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:49:05,174 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 [2022-03-18 05:49:05,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:49:05,193 INFO L225 Difference]: With dead ends: 4436 [2022-03-18 05:49:05,194 INFO L226 Difference]: Without dead ends: 4392 [2022-03-18 05:49:05,197 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:49:05,198 INFO L912 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 [2022-03-18 05:49:05,198 INFO L913 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] [2022-03-18 05:49:05,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4392 states. [2022-03-18 05:49:06,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4392 to 4390. [2022-03-18 05:49:06,029 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) [2022-03-18 05:49:06,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4390 states to 4390 states and 6305 transitions. [2022-03-18 05:49:06,040 INFO L78 Accepts]: Start accepts. Automaton has 4390 states and 6305 transitions. Word has length 52 [2022-03-18 05:49:06,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:49:06,040 INFO L478 AbstractCegarLoop]: Abstraction has 4390 states and 6305 transitions. [2022-03-18 05:49:06,040 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) [2022-03-18 05:49:06,041 INFO L276 IsEmpty]: Start isEmpty. Operand 4390 states and 6305 transitions. [2022-03-18 05:49:06,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-18 05:49:06,042 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:49:06,042 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:49:06,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-18 05:49:06,251 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 [2022-03-18 05:49:06,252 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:49:06,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:49:06,252 INFO L85 PathProgramCache]: Analyzing trace with hash 851781494, now seen corresponding path program 1 times [2022-03-18 05:49:06,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:06,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [361480406] [2022-03-18 05:49:06,255 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:49:06,255 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:49:06,255 INFO L85 PathProgramCache]: Analyzing trace with hash 851781494, now seen corresponding path program 2 times [2022-03-18 05:49:06,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:49:06,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543560039] [2022-03-18 05:49:06,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:49:06,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:49:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:06,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:49:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:06,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:49:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:06,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:49:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:06,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 05:49:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:06,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:49:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:06,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:06,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:49:06,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:49:06,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543560039] [2022-03-18 05:49:06,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543560039] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:49:06,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836680908] [2022-03-18 05:49:06,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:49:06,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:49:06,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:49:06,686 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) [2022-03-18 05:49:06,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-18 05:49:07,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:49:07,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:49:07,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-18 05:49:07,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:49:07,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:49:07,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:49:07,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836680908] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:07,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:49:07,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-03-18 05:49:07,634 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:49:07,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [361480406] [2022-03-18 05:49:07,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [361480406] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:07,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:49:07,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:49:07,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854273910] [2022-03-18 05:49:07,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:49:07,635 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 05:49:07,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:07,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 05:49:07,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-18 05:49:07,635 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) [2022-03-18 05:49:08,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:49:08,561 INFO L93 Difference]: Finished difference Result 4408 states and 6326 transitions. [2022-03-18 05:49:08,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 05:49:08,562 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 [2022-03-18 05:49:08,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:49:08,578 INFO L225 Difference]: With dead ends: 4408 [2022-03-18 05:49:08,578 INFO L226 Difference]: Without dead ends: 4388 [2022-03-18 05:49:08,581 INFO L911 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 [2022-03-18 05:49:08,581 INFO L912 BasicCegarLoop]: 2782 mSDtfsCounter, 7 mSDsluCounter, 16652 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:49:08,582 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 19434 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 05:49:08,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4388 states. [2022-03-18 05:49:09,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4388 to 4388. [2022-03-18 05:49:09,337 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) [2022-03-18 05:49:09,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 6301 transitions. [2022-03-18 05:49:09,348 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 6301 transitions. Word has length 54 [2022-03-18 05:49:09,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:49:09,348 INFO L478 AbstractCegarLoop]: Abstraction has 4388 states and 6301 transitions. [2022-03-18 05:49:09,348 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) [2022-03-18 05:49:09,348 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 6301 transitions. [2022-03-18 05:49:09,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-18 05:49:09,349 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:49:09,350 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:49:09,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-18 05:49:09,563 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 [2022-03-18 05:49:09,564 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:49:09,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:49:09,564 INFO L85 PathProgramCache]: Analyzing trace with hash 413420634, now seen corresponding path program 1 times [2022-03-18 05:49:09,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:09,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1759182025] [2022-03-18 05:49:09,567 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:49:09,567 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:49:09,567 INFO L85 PathProgramCache]: Analyzing trace with hash 413420634, now seen corresponding path program 2 times [2022-03-18 05:49:09,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:49:09,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213482320] [2022-03-18 05:49:09,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:49:09,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:49:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:09,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:49:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:09,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:49:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:09,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:49:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:09,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:49:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:09,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:09,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:49:09,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:49:09,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213482320] [2022-03-18 05:49:09,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213482320] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:49:09,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159136969] [2022-03-18 05:49:09,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:49:09,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:49:09,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:49:09,956 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) [2022-03-18 05:49:09,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-18 05:49:10,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:49:10,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:49:10,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 05:49:10,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:49:11,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:49:11,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:49:11,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159136969] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:11,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:49:11,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-03-18 05:49:11,060 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:49:11,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1759182025] [2022-03-18 05:49:11,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1759182025] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:11,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:49:11,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:49:11,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145687398] [2022-03-18 05:49:11,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:49:11,060 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 05:49:11,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:11,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 05:49:11,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:49:11,061 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) [2022-03-18 05:49:11,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:49:11,981 INFO L93 Difference]: Finished difference Result 4403 states and 6319 transitions. [2022-03-18 05:49:11,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 05:49:11,982 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 [2022-03-18 05:49:11,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:49:11,993 INFO L225 Difference]: With dead ends: 4403 [2022-03-18 05:49:11,994 INFO L226 Difference]: Without dead ends: 4382 [2022-03-18 05:49:11,995 INFO L911 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 [2022-03-18 05:49:11,996 INFO L912 BasicCegarLoop]: 2768 mSDtfsCounter, 18 mSDsluCounter, 16574 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:49:11,996 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 19342 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 05:49:11,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2022-03-18 05:49:12,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 4382. [2022-03-18 05:49:12,795 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) [2022-03-18 05:49:12,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 6292 transitions. [2022-03-18 05:49:12,805 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 6292 transitions. Word has length 53 [2022-03-18 05:49:12,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:49:12,805 INFO L478 AbstractCegarLoop]: Abstraction has 4382 states and 6292 transitions. [2022-03-18 05:49:12,805 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) [2022-03-18 05:49:12,805 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 6292 transitions. [2022-03-18 05:49:12,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-18 05:49:12,807 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:49:12,807 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:49:12,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-18 05:49:13,035 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 [2022-03-18 05:49:13,035 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:49:13,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:49:13,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1241941963, now seen corresponding path program 1 times [2022-03-18 05:49:13,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:13,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1146587004] [2022-03-18 05:49:13,038 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:49:13,038 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:49:13,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1241941963, now seen corresponding path program 2 times [2022-03-18 05:49:13,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:49:13,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552625792] [2022-03-18 05:49:13,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:49:13,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:49:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:13,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:49:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:13,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:49:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:13,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:49:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:13,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:49:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:13,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:13,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:49:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:13,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:13,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:49:13,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:49:13,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552625792] [2022-03-18 05:49:13,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552625792] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:49:13,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521781980] [2022-03-18 05:49:13,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:49:13,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:49:13,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:49:13,449 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) [2022-03-18 05:49:13,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-18 05:49:14,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:49:14,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:49:14,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 1682 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 05:49:14,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:49:14,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:49:14,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:49:14,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521781980] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:14,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:49:14,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-03-18 05:49:14,435 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:49:14,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1146587004] [2022-03-18 05:49:14,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1146587004] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:14,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:49:14,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:49:14,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495135521] [2022-03-18 05:49:14,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:49:14,435 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:49:14,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:14,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:49:14,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:49:14,436 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) [2022-03-18 05:49:15,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:49:15,274 INFO L93 Difference]: Finished difference Result 4427 states and 6345 transitions. [2022-03-18 05:49:15,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:49:15,275 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 [2022-03-18 05:49:15,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:49:15,287 INFO L225 Difference]: With dead ends: 4427 [2022-03-18 05:49:15,287 INFO L226 Difference]: Without dead ends: 4382 [2022-03-18 05:49:15,289 INFO L911 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 [2022-03-18 05:49:15,289 INFO L912 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 [2022-03-18 05:49:15,289 INFO L913 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] [2022-03-18 05:49:15,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2022-03-18 05:49:16,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 4382. [2022-03-18 05:49:16,069 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) [2022-03-18 05:49:16,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 6291 transitions. [2022-03-18 05:49:16,079 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 6291 transitions. Word has length 60 [2022-03-18 05:49:16,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:49:16,080 INFO L478 AbstractCegarLoop]: Abstraction has 4382 states and 6291 transitions. [2022-03-18 05:49:16,080 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) [2022-03-18 05:49:16,080 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 6291 transitions. [2022-03-18 05:49:16,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-18 05:49:16,082 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:49:16,082 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:49:16,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-03-18 05:49:16,307 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 [2022-03-18 05:49:16,307 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:49:16,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:49:16,308 INFO L85 PathProgramCache]: Analyzing trace with hash 2054843116, now seen corresponding path program 1 times [2022-03-18 05:49:16,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:16,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2064355121] [2022-03-18 05:49:16,310 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:49:16,310 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:49:16,310 INFO L85 PathProgramCache]: Analyzing trace with hash 2054843116, now seen corresponding path program 2 times [2022-03-18 05:49:16,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:49:16,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641848189] [2022-03-18 05:49:16,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:49:16,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:49:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:16,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:49:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:16,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:49:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:16,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:49:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:16,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:49:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:16,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 05:49:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:16,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:16,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-18 05:49:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:16,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:16,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:49:16,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:49:16,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641848189] [2022-03-18 05:49:16,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641848189] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:49:16,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756276978] [2022-03-18 05:49:16,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:49:16,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:49:16,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:49:16,676 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) [2022-03-18 05:49:16,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-18 05:49:17,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:49:17,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:49:17,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 1931 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-18 05:49:17,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:49:17,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:49:17,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:49:17,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756276978] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:17,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:49:17,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-03-18 05:49:17,691 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:49:17,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2064355121] [2022-03-18 05:49:17,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2064355121] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:17,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:49:17,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 05:49:17,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876119080] [2022-03-18 05:49:17,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:49:17,692 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 05:49:17,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:17,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 05:49:17,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:49:17,693 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) [2022-03-18 05:49:18,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:49:18,833 INFO L93 Difference]: Finished difference Result 7277 states and 10413 transitions. [2022-03-18 05:49:18,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 05:49:18,834 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 [2022-03-18 05:49:18,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:49:18,860 INFO L225 Difference]: With dead ends: 7277 [2022-03-18 05:49:18,860 INFO L226 Difference]: Without dead ends: 6964 [2022-03-18 05:49:18,867 INFO L911 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 [2022-03-18 05:49:18,868 INFO L912 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 [2022-03-18 05:49:18,868 INFO L913 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] [2022-03-18 05:49:18,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6964 states. [2022-03-18 05:49:20,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6964 to 6826. [2022-03-18 05:49:20,137 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) [2022-03-18 05:49:20,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6826 states to 6826 states and 9870 transitions. [2022-03-18 05:49:20,156 INFO L78 Accepts]: Start accepts. Automaton has 6826 states and 9870 transitions. Word has length 72 [2022-03-18 05:49:20,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:49:20,156 INFO L478 AbstractCegarLoop]: Abstraction has 6826 states and 9870 transitions. [2022-03-18 05:49:20,156 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) [2022-03-18 05:49:20,156 INFO L276 IsEmpty]: Start isEmpty. Operand 6826 states and 9870 transitions. [2022-03-18 05:49:20,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-18 05:49:20,158 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:49:20,158 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:49:20,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-18 05:49:20,371 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 [2022-03-18 05:49:20,371 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:49:20,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:49:20,372 INFO L85 PathProgramCache]: Analyzing trace with hash 898925172, now seen corresponding path program 1 times [2022-03-18 05:49:20,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:20,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [39686578] [2022-03-18 05:49:20,374 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:49:20,374 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:49:20,374 INFO L85 PathProgramCache]: Analyzing trace with hash 898925172, now seen corresponding path program 2 times [2022-03-18 05:49:20,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:49:20,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474810102] [2022-03-18 05:49:20,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:49:20,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:49:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:20,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:49:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:20,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:49:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:20,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:49:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:20,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 05:49:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:20,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:49:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:20,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:49:20,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:49:20,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474810102] [2022-03-18 05:49:20,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474810102] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:49:20,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394397811] [2022-03-18 05:49:20,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:49:20,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:49:20,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:49:20,751 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) [2022-03-18 05:49:20,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-18 05:49:21,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:49:21,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:49:21,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 1620 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 05:49:21,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:49:21,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:49:21,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:49:21,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394397811] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:21,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:49:21,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-03-18 05:49:21,740 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:49:21,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [39686578] [2022-03-18 05:49:21,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [39686578] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:21,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:49:21,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:49:21,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026685958] [2022-03-18 05:49:21,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:49:21,740 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:49:21,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:21,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:49:21,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:49:21,741 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) [2022-03-18 05:49:23,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:49:23,046 INFO L93 Difference]: Finished difference Result 6967 states and 10051 transitions. [2022-03-18 05:49:23,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:49:23,046 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 [2022-03-18 05:49:23,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:49:23,073 INFO L225 Difference]: With dead ends: 6967 [2022-03-18 05:49:23,074 INFO L226 Difference]: Without dead ends: 6855 [2022-03-18 05:49:23,080 INFO L911 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 [2022-03-18 05:49:23,080 INFO L912 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 [2022-03-18 05:49:23,080 INFO L913 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] [2022-03-18 05:49:23,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6855 states. [2022-03-18 05:49:24,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6855 to 6828. [2022-03-18 05:49:24,324 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) [2022-03-18 05:49:24,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6828 states to 6828 states and 9871 transitions. [2022-03-18 05:49:24,342 INFO L78 Accepts]: Start accepts. Automaton has 6828 states and 9871 transitions. Word has length 60 [2022-03-18 05:49:24,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:49:24,343 INFO L478 AbstractCegarLoop]: Abstraction has 6828 states and 9871 transitions. [2022-03-18 05:49:24,343 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) [2022-03-18 05:49:24,343 INFO L276 IsEmpty]: Start isEmpty. Operand 6828 states and 9871 transitions. [2022-03-18 05:49:24,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-18 05:49:24,345 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:49:24,345 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:49:24,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-18 05:49:24,559 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 [2022-03-18 05:49:24,560 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:49:24,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:49:24,560 INFO L85 PathProgramCache]: Analyzing trace with hash 696011681, now seen corresponding path program 1 times [2022-03-18 05:49:24,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:24,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1455679979] [2022-03-18 05:49:24,562 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:49:24,562 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:49:24,562 INFO L85 PathProgramCache]: Analyzing trace with hash 696011681, now seen corresponding path program 2 times [2022-03-18 05:49:24,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:49:24,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790838193] [2022-03-18 05:49:24,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:49:24,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:49:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:24,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:49:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:24,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:49:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:24,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:49:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:24,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:49:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:25,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:25,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:25,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:49:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:25,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:25,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:49:25,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:49:25,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790838193] [2022-03-18 05:49:25,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790838193] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:49:25,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106712896] [2022-03-18 05:49:25,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:49:25,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:49:25,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:49:25,157 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) [2022-03-18 05:49:25,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-18 05:49:26,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:49:26,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:49:26,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 1601 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-18 05:49:26,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:49:26,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:49:26,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:49:26,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106712896] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:26,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:49:26,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2022-03-18 05:49:26,248 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:49:26,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1455679979] [2022-03-18 05:49:26,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1455679979] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:26,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:49:26,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 05:49:26,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203359265] [2022-03-18 05:49:26,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:49:26,249 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 05:49:26,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:26,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 05:49:26,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:49:26,249 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) [2022-03-18 05:49:27,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:49:27,486 INFO L93 Difference]: Finished difference Result 6884 states and 9934 transitions. [2022-03-18 05:49:27,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 05:49:27,486 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 [2022-03-18 05:49:27,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:49:27,502 INFO L225 Difference]: With dead ends: 6884 [2022-03-18 05:49:27,502 INFO L226 Difference]: Without dead ends: 6835 [2022-03-18 05:49:27,504 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:49:27,504 INFO L912 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 [2022-03-18 05:49:27,504 INFO L913 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] [2022-03-18 05:49:27,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6835 states. [2022-03-18 05:49:28,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6835 to 6833. [2022-03-18 05:49:28,837 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) [2022-03-18 05:49:28,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6833 states to 6833 states and 9876 transitions. [2022-03-18 05:49:28,852 INFO L78 Accepts]: Start accepts. Automaton has 6833 states and 9876 transitions. Word has length 63 [2022-03-18 05:49:28,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:49:28,852 INFO L478 AbstractCegarLoop]: Abstraction has 6833 states and 9876 transitions. [2022-03-18 05:49:28,852 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) [2022-03-18 05:49:28,853 INFO L276 IsEmpty]: Start isEmpty. Operand 6833 states and 9876 transitions. [2022-03-18 05:49:28,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-18 05:49:28,854 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:49:28,854 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:49:28,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-18 05:49:29,054 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 [2022-03-18 05:49:29,055 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:49:29,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:49:29,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1314092160, now seen corresponding path program 1 times [2022-03-18 05:49:29,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:29,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [211339628] [2022-03-18 05:49:29,063 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:49:29,063 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:49:29,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1314092160, now seen corresponding path program 2 times [2022-03-18 05:49:29,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:49:29,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553987782] [2022-03-18 05:49:29,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:49:29,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:49:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:29,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:49:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:29,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:49:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:29,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:49:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:29,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:49:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:29,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:29,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:29,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:49:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:29,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:29,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:49:29,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:49:29,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553987782] [2022-03-18 05:49:29,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553987782] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:49:29,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678863226] [2022-03-18 05:49:29,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:49:29,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:49:29,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:49:29,492 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) [2022-03-18 05:49:29,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-18 05:49:30,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:49:30,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:49:30,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 1602 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-18 05:49:30,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:49:30,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:49:30,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:49:30,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678863226] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:30,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:49:30,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2022-03-18 05:49:30,648 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:49:30,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [211339628] [2022-03-18 05:49:30,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [211339628] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:30,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:49:30,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:49:30,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392666810] [2022-03-18 05:49:30,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:49:30,648 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 05:49:30,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:30,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 05:49:30,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-03-18 05:49:30,649 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) [2022-03-18 05:49:31,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:49:31,997 INFO L93 Difference]: Finished difference Result 7125 states and 10235 transitions. [2022-03-18 05:49:31,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 05:49:31,998 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 [2022-03-18 05:49:31,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:49:32,021 INFO L225 Difference]: With dead ends: 7125 [2022-03-18 05:49:32,022 INFO L226 Difference]: Without dead ends: 6826 [2022-03-18 05:49:32,026 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-03-18 05:49:32,027 INFO L912 BasicCegarLoop]: 2779 mSDtfsCounter, 7 mSDsluCounter, 22189 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-03-18 05:49:32,027 INFO L913 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] [2022-03-18 05:49:32,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6826 states. [2022-03-18 05:49:33,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6826 to 6826. [2022-03-18 05:49:33,333 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) [2022-03-18 05:49:33,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6826 states to 6826 states and 9866 transitions. [2022-03-18 05:49:33,349 INFO L78 Accepts]: Start accepts. Automaton has 6826 states and 9866 transitions. Word has length 63 [2022-03-18 05:49:33,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:49:33,349 INFO L478 AbstractCegarLoop]: Abstraction has 6826 states and 9866 transitions. [2022-03-18 05:49:33,349 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) [2022-03-18 05:49:33,350 INFO L276 IsEmpty]: Start isEmpty. Operand 6826 states and 9866 transitions. [2022-03-18 05:49:33,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-18 05:49:33,352 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:49:33,352 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:49:33,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-18 05:49:33,579 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 [2022-03-18 05:49:33,579 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:49:33,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:49:33,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1827694763, now seen corresponding path program 1 times [2022-03-18 05:49:33,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:33,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [101921512] [2022-03-18 05:49:33,582 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:49:33,583 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:49:33,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1827694763, now seen corresponding path program 2 times [2022-03-18 05:49:33,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:49:33,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92845851] [2022-03-18 05:49:33,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:49:33,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:49:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:33,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:49:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:33,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:49:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:33,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:49:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:33,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 05:49:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:33,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:49:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:33,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:34,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:34,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:49:34,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:49:34,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92845851] [2022-03-18 05:49:34,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92845851] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:49:34,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665520033] [2022-03-18 05:49:34,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:49:34,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:49:34,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:49:34,016 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) [2022-03-18 05:49:34,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-18 05:49:34,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:49:34,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:49:34,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 1623 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-18 05:49:34,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:49:35,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:49:35,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:49:35,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665520033] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:35,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:49:35,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-03-18 05:49:35,106 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:49:35,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [101921512] [2022-03-18 05:49:35,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [101921512] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:35,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:49:35,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 05:49:35,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124283703] [2022-03-18 05:49:35,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:49:35,107 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 05:49:35,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:35,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 05:49:35,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:49:35,108 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) [2022-03-18 05:49:36,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:49:36,491 INFO L93 Difference]: Finished difference Result 6844 states and 9887 transitions. [2022-03-18 05:49:36,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 05:49:36,492 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 [2022-03-18 05:49:36,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:49:36,515 INFO L225 Difference]: With dead ends: 6844 [2022-03-18 05:49:36,515 INFO L226 Difference]: Without dead ends: 6824 [2022-03-18 05:49:36,518 INFO L911 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 [2022-03-18 05:49:36,518 INFO L912 BasicCegarLoop]: 2750 mSDtfsCounter, 7 mSDsluCounter, 16472 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:49:36,519 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 19222 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 05:49:36,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6824 states. [2022-03-18 05:49:37,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6824 to 6824. [2022-03-18 05:49:37,724 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) [2022-03-18 05:49:37,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6824 states to 6824 states and 9862 transitions. [2022-03-18 05:49:37,741 INFO L78 Accepts]: Start accepts. Automaton has 6824 states and 9862 transitions. Word has length 62 [2022-03-18 05:49:37,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:49:37,742 INFO L478 AbstractCegarLoop]: Abstraction has 6824 states and 9862 transitions. [2022-03-18 05:49:37,742 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) [2022-03-18 05:49:37,742 INFO L276 IsEmpty]: Start isEmpty. Operand 6824 states and 9862 transitions. [2022-03-18 05:49:37,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-18 05:49:37,745 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:49:37,745 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:49:37,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-18 05:49:37,959 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 [2022-03-18 05:49:37,959 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:49:37,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:49:37,960 INFO L85 PathProgramCache]: Analyzing trace with hash 502563313, now seen corresponding path program 1 times [2022-03-18 05:49:37,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:37,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [613845275] [2022-03-18 05:49:37,962 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:49:37,962 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:49:37,962 INFO L85 PathProgramCache]: Analyzing trace with hash 502563313, now seen corresponding path program 2 times [2022-03-18 05:49:37,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:49:37,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477997890] [2022-03-18 05:49:37,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:49:37,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:49:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:38,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:49:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:38,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:49:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:38,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:49:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:38,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:49:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:38,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:38,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:49:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:49:38,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:49:38,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477997890] [2022-03-18 05:49:38,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477997890] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:49:38,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454380886] [2022-03-18 05:49:38,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:49:38,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:49:38,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:49:38,316 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) [2022-03-18 05:49:38,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-18 05:49:39,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:49:39,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:49:39,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 1609 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-18 05:49:39,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:49:39,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:49:39,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:49:39,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454380886] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:39,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:49:39,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-03-18 05:49:39,361 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:49:39,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [613845275] [2022-03-18 05:49:39,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [613845275] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:39,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:49:39,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 05:49:39,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945533189] [2022-03-18 05:49:39,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:49:39,361 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 05:49:39,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:39,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 05:49:39,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:49:39,362 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) [2022-03-18 05:49:40,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:49:40,916 INFO L93 Difference]: Finished difference Result 8195 states and 11832 transitions. [2022-03-18 05:49:40,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 05:49:40,917 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 [2022-03-18 05:49:40,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:49:40,942 INFO L225 Difference]: With dead ends: 8195 [2022-03-18 05:49:40,942 INFO L226 Difference]: Without dead ends: 8187 [2022-03-18 05:49:40,946 INFO L911 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 [2022-03-18 05:49:40,947 INFO L912 BasicCegarLoop]: 4476 mSDtfsCounter, 1928 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1928 SdHoareTripleChecker+Valid, 7176 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:49:40,947 INFO L913 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] [2022-03-18 05:49:40,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8187 states. [2022-03-18 05:49:42,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8187 to 6951. [2022-03-18 05:49:42,257 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) [2022-03-18 05:49:42,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6951 states to 6951 states and 10008 transitions. [2022-03-18 05:49:42,275 INFO L78 Accepts]: Start accepts. Automaton has 6951 states and 10008 transitions. Word has length 65 [2022-03-18 05:49:42,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:49:42,276 INFO L478 AbstractCegarLoop]: Abstraction has 6951 states and 10008 transitions. [2022-03-18 05:49:42,276 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) [2022-03-18 05:49:42,276 INFO L276 IsEmpty]: Start isEmpty. Operand 6951 states and 10008 transitions. [2022-03-18 05:49:42,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-18 05:49:42,278 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:49:42,278 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:49:42,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-18 05:49:42,478 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 [2022-03-18 05:49:42,479 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:49:42,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:49:42,479 INFO L85 PathProgramCache]: Analyzing trace with hash 118946246, now seen corresponding path program 1 times [2022-03-18 05:49:42,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:42,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1999198403] [2022-03-18 05:49:42,481 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:49:42,482 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:49:42,482 INFO L85 PathProgramCache]: Analyzing trace with hash 118946246, now seen corresponding path program 2 times [2022-03-18 05:49:42,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:49:42,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282307646] [2022-03-18 05:49:42,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:49:42,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:49:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:42,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:49:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:42,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:49:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:42,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:49:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:42,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 05:49:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:42,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:49:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:42,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:42,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:49:42,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:49:42,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282307646] [2022-03-18 05:49:42,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282307646] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:49:42,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211454187] [2022-03-18 05:49:42,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:49:42,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:49:42,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:49:42,907 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) [2022-03-18 05:49:42,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-18 05:49:43,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:49:43,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:49:43,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-18 05:49:43,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:49:44,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:49:44,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:49:44,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211454187] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:44,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:49:44,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2022-03-18 05:49:44,007 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:49:44,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1999198403] [2022-03-18 05:49:44,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1999198403] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:44,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:49:44,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 05:49:44,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137549510] [2022-03-18 05:49:44,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:49:44,007 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 05:49:44,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:44,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 05:49:44,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:49:44,008 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) [2022-03-18 05:49:46,838 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 [] [2022-03-18 05:49:48,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:49:48,165 INFO L93 Difference]: Finished difference Result 7057 states and 10147 transitions. [2022-03-18 05:49:48,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 05:49:48,166 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 [2022-03-18 05:49:48,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:49:48,198 INFO L225 Difference]: With dead ends: 7057 [2022-03-18 05:49:48,198 INFO L226 Difference]: Without dead ends: 6978 [2022-03-18 05:49:48,204 INFO L911 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 [2022-03-18 05:49:48,205 INFO L912 BasicCegarLoop]: 2757 mSDtfsCounter, 9 mSDsluCounter, 2701 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 5458 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-03-18 05:49:48,205 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 5458 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 39 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-03-18 05:49:48,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6978 states. [2022-03-18 05:49:49,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6978 to 6957. [2022-03-18 05:49:49,683 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) [2022-03-18 05:49:49,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6957 states to 6957 states and 10018 transitions. [2022-03-18 05:49:49,707 INFO L78 Accepts]: Start accepts. Automaton has 6957 states and 10018 transitions. Word has length 68 [2022-03-18 05:49:49,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:49:49,708 INFO L478 AbstractCegarLoop]: Abstraction has 6957 states and 10018 transitions. [2022-03-18 05:49:49,708 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) [2022-03-18 05:49:49,708 INFO L276 IsEmpty]: Start isEmpty. Operand 6957 states and 10018 transitions. [2022-03-18 05:49:49,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-18 05:49:49,711 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:49:49,712 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:49:49,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-18 05:49:49,927 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 [2022-03-18 05:49:49,928 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:49:49,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:49:49,928 INFO L85 PathProgramCache]: Analyzing trace with hash -774797162, now seen corresponding path program 1 times [2022-03-18 05:49:49,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:49,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2041896320] [2022-03-18 05:49:49,931 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:49:49,931 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:49:49,931 INFO L85 PathProgramCache]: Analyzing trace with hash -774797162, now seen corresponding path program 2 times [2022-03-18 05:49:49,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:49:49,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033654506] [2022-03-18 05:49:49,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:49:49,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:49:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:50,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:49:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:50,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:49:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:50,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:49:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:50,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 05:49:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:50,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:49:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:50,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:50,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 05:49:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:50,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:50,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:50,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:49:50,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:49:50,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033654506] [2022-03-18 05:49:50,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033654506] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:49:50,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987893082] [2022-03-18 05:49:50,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:49:50,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:49:50,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:49:50,462 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) [2022-03-18 05:49:50,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-18 05:49:51,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:49:51,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:49:51,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-18 05:49:51,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:49:51,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:49:51,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:49:51,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987893082] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:51,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:49:51,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-03-18 05:49:51,739 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:49:51,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2041896320] [2022-03-18 05:49:51,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2041896320] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:51,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:49:51,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:49:51,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339658302] [2022-03-18 05:49:51,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:49:51,740 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:49:51,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:51,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:49:51,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:49:51,741 INFO L87 Difference]: Start difference. First operand 6957 states and 10018 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-18 05:49:53,306 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:49:55,343 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:49:56,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:49:56,615 INFO L93 Difference]: Finished difference Result 7088 states and 10172 transitions. [2022-03-18 05:49:56,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:49:56,616 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 [2022-03-18 05:49:56,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:49:56,635 INFO L225 Difference]: With dead ends: 7088 [2022-03-18 05:49:56,635 INFO L226 Difference]: Without dead ends: 6050 [2022-03-18 05:49:56,640 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-03-18 05:49:56,641 INFO L912 BasicCegarLoop]: 2777 mSDtfsCounter, 17 mSDsluCounter, 24891 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 27668 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-03-18 05:49:56,641 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 27668 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 172 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-03-18 05:49:56,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6050 states. [2022-03-18 05:49:57,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6050 to 6015. [2022-03-18 05:49:57,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6015 states, 4016 states have (on average 1.3461155378486056) internal successors, (5406), 4105 states have internal predecessors, (5406), 1573 states have call successors, (1573), 390 states have call predecessors, (1573), 425 states have return successors, (1631), 1582 states have call predecessors, (1631), 1562 states have call successors, (1631) [2022-03-18 05:49:57,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6015 states to 6015 states and 8610 transitions. [2022-03-18 05:49:57,801 INFO L78 Accepts]: Start accepts. Automaton has 6015 states and 8610 transitions. Word has length 76 [2022-03-18 05:49:57,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:49:57,801 INFO L478 AbstractCegarLoop]: Abstraction has 6015 states and 8610 transitions. [2022-03-18 05:49:57,801 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) [2022-03-18 05:49:57,801 INFO L276 IsEmpty]: Start isEmpty. Operand 6015 states and 8610 transitions. [2022-03-18 05:49:57,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-18 05:49:57,803 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:49:57,803 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:49:57,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-03-18 05:49:58,004 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 [2022-03-18 05:49:58,004 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:49:58,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:49:58,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1475878482, now seen corresponding path program 1 times [2022-03-18 05:49:58,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:58,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [474788870] [2022-03-18 05:49:58,006 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:49:58,006 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:49:58,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1475878482, now seen corresponding path program 2 times [2022-03-18 05:49:58,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:49:58,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721028087] [2022-03-18 05:49:58,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:49:58,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:49:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:58,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:49:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:58,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:49:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:58,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:49:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:58,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 05:49:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:58,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:49:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:58,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:58,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 05:49:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:58,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:58,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:49:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:49:58,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:49:58,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:49:58,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721028087] [2022-03-18 05:49:58,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721028087] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:49:58,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225820432] [2022-03-18 05:49:58,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:49:58,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:49:58,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:49:58,350 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) [2022-03-18 05:49:58,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-18 05:49:59,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:49:59,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:49:59,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-18 05:49:59,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:49:59,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:49:59,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:49:59,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225820432] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:59,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:49:59,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2022-03-18 05:49:59,613 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:49:59,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [474788870] [2022-03-18 05:49:59,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [474788870] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:49:59,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:49:59,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:49:59,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485757717] [2022-03-18 05:49:59,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:49:59,614 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:49:59,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:49:59,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:49:59,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-03-18 05:49:59,615 INFO L87 Difference]: Start difference. First operand 6015 states and 8610 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-18 05:50:00,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:50:00,888 INFO L93 Difference]: Finished difference Result 6086 states and 8690 transitions. [2022-03-18 05:50:00,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:50:00,888 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 [2022-03-18 05:50:00,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:50:00,907 INFO L225 Difference]: With dead ends: 6086 [2022-03-18 05:50:00,907 INFO L226 Difference]: Without dead ends: 6005 [2022-03-18 05:50:00,910 INFO L911 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 [2022-03-18 05:50:00,911 INFO L912 BasicCegarLoop]: 2750 mSDtfsCounter, 9 mSDsluCounter, 24704 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 27454 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 [2022-03-18 05:50:00,911 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 27454 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 05:50:00,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6005 states. [2022-03-18 05:50:02,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6005 to 6005. [2022-03-18 05:50:02,066 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) [2022-03-18 05:50:02,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6005 states to 6005 states and 8596 transitions. [2022-03-18 05:50:02,080 INFO L78 Accepts]: Start accepts. Automaton has 6005 states and 8596 transitions. Word has length 68 [2022-03-18 05:50:02,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:50:02,081 INFO L478 AbstractCegarLoop]: Abstraction has 6005 states and 8596 transitions. [2022-03-18 05:50:02,081 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) [2022-03-18 05:50:02,081 INFO L276 IsEmpty]: Start isEmpty. Operand 6005 states and 8596 transitions. [2022-03-18 05:50:02,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-18 05:50:02,083 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:50:02,083 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:50:02,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-03-18 05:50:02,283 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 [2022-03-18 05:50:02,283 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:50:02,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:50:02,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1149198091, now seen corresponding path program 1 times [2022-03-18 05:50:02,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:50:02,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [565497226] [2022-03-18 05:50:02,286 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:50:02,286 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:50:02,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1149198091, now seen corresponding path program 2 times [2022-03-18 05:50:02,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:50:02,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942303381] [2022-03-18 05:50:02,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:50:02,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:50:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:02,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:50:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:02,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:50:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:02,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:50:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:02,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:50:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:02,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:50:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:02,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:50:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:50:02,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:50:02,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942303381] [2022-03-18 05:50:02,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942303381] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:50:02,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618500989] [2022-03-18 05:50:02,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:50:02,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:50:02,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:50:02,615 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) [2022-03-18 05:50:02,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-18 05:50:03,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:50:03,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:50:03,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-18 05:50:03,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:50:03,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:50:03,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:50:03,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618500989] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:50:03,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:50:03,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-03-18 05:50:03,932 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:50:03,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [565497226] [2022-03-18 05:50:03,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [565497226] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:50:03,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:50:03,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:50:03,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510483517] [2022-03-18 05:50:03,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:50:03,932 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:50:03,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:50:03,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:50:03,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:50:03,934 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) [2022-03-18 05:50:09,251 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:10,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:15,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:50:15,959 INFO L93 Difference]: Finished difference Result 6118 states and 8751 transitions. [2022-03-18 05:50:15,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 05:50:15,959 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 [2022-03-18 05:50:15,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:50:15,976 INFO L225 Difference]: With dead ends: 6118 [2022-03-18 05:50:15,976 INFO L226 Difference]: Without dead ends: 5999 [2022-03-18 05:50:15,979 INFO L911 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 [2022-03-18 05:50:15,979 INFO L912 BasicCegarLoop]: 2344 mSDtfsCounter, 1849 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 5168 mSolverCounterSat, 602 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2284 SdHoareTripleChecker+Valid, 3433 SdHoareTripleChecker+Invalid, 5771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 5168 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:50:15,980 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2284 Valid, 3433 Invalid, 5771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 5168 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2022-03-18 05:50:15,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5999 states. [2022-03-18 05:50:17,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5999 to 5930. [2022-03-18 05:50:17,214 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) [2022-03-18 05:50:17,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5930 states to 5930 states and 8506 transitions. [2022-03-18 05:50:17,230 INFO L78 Accepts]: Start accepts. Automaton has 5930 states and 8506 transitions. Word has length 66 [2022-03-18 05:50:17,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:50:17,230 INFO L478 AbstractCegarLoop]: Abstraction has 5930 states and 8506 transitions. [2022-03-18 05:50:17,230 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) [2022-03-18 05:50:17,230 INFO L276 IsEmpty]: Start isEmpty. Operand 5930 states and 8506 transitions. [2022-03-18 05:50:17,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 05:50:17,232 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:50:17,232 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:50:17,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-18 05:50:17,433 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 [2022-03-18 05:50:17,433 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:50:17,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:50:17,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1417992752, now seen corresponding path program 1 times [2022-03-18 05:50:17,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:50:17,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [851397216] [2022-03-18 05:50:17,436 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:50:17,436 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:50:17,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1417992752, now seen corresponding path program 2 times [2022-03-18 05:50:17,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:50:17,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71475378] [2022-03-18 05:50:17,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:50:17,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:50:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:17,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:50:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:17,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:50:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:17,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:50:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:17,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 05:50:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:17,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:50:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:17,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:50:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:50:17,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:50:17,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71475378] [2022-03-18 05:50:17,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71475378] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:50:17,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052391877] [2022-03-18 05:50:17,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:50:17,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:50:17,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:50:17,835 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) [2022-03-18 05:50:17,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-18 05:50:18,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:50:18,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:50:18,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 1817 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-18 05:50:18,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:50:18,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:50:18,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:50:18,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052391877] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:50:18,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:50:18,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-03-18 05:50:18,999 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:50:18,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [851397216] [2022-03-18 05:50:18,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [851397216] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:50:18,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:50:18,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 05:50:18,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861788864] [2022-03-18 05:50:18,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:50:19,000 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 05:50:19,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:50:19,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 05:50:19,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:50:19,000 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) [2022-03-18 05:50:20,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:50:20,248 INFO L93 Difference]: Finished difference Result 5987 states and 8577 transitions. [2022-03-18 05:50:20,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 05:50:20,249 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 [2022-03-18 05:50:20,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:50:20,263 INFO L225 Difference]: With dead ends: 5987 [2022-03-18 05:50:20,263 INFO L226 Difference]: Without dead ends: 5942 [2022-03-18 05:50:20,265 INFO L911 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 [2022-03-18 05:50:20,265 INFO L912 BasicCegarLoop]: 2734 mSDtfsCounter, 15 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 5424 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:50:20,266 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 5424 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 05:50:20,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5942 states. [2022-03-18 05:50:21,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5942 to 5930. [2022-03-18 05:50:21,505 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) [2022-03-18 05:50:21,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5930 states to 5930 states and 8506 transitions. [2022-03-18 05:50:21,520 INFO L78 Accepts]: Start accepts. Automaton has 5930 states and 8506 transitions. Word has length 69 [2022-03-18 05:50:21,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:50:21,520 INFO L478 AbstractCegarLoop]: Abstraction has 5930 states and 8506 transitions. [2022-03-18 05:50:21,520 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) [2022-03-18 05:50:21,521 INFO L276 IsEmpty]: Start isEmpty. Operand 5930 states and 8506 transitions. [2022-03-18 05:50:21,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-18 05:50:21,522 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:50:21,522 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:50:21,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-03-18 05:50:21,723 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 [2022-03-18 05:50:21,723 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:50:21,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:50:21,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1825278757, now seen corresponding path program 1 times [2022-03-18 05:50:21,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:50:21,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1195550235] [2022-03-18 05:50:21,726 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:50:21,726 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:50:21,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1825278757, now seen corresponding path program 2 times [2022-03-18 05:50:21,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:50:21,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895300289] [2022-03-18 05:50:21,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:50:21,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:50:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:21,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:50:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:21,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:50:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:22,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:50:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:22,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:50:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:22,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:50:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:22,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:50:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:22,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:50:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:22,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 05:50:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:22,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:50:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:22,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:50:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:22,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:50:22,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:50:22,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895300289] [2022-03-18 05:50:22,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895300289] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:50:22,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438006676] [2022-03-18 05:50:22,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:50:22,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:50:22,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:50:22,184 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) [2022-03-18 05:50:22,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-18 05:50:23,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:50:23,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:50:23,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-18 05:50:23,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:50:23,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:50:23,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:50:23,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438006676] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:50:23,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:50:23,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-03-18 05:50:23,549 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:50:23,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1195550235] [2022-03-18 05:50:23,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1195550235] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:50:23,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:50:23,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:50:23,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220627083] [2022-03-18 05:50:23,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:50:23,549 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:50:23,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:50:23,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:50:23,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:50:23,550 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) [2022-03-18 05:50:25,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:50:25,060 INFO L93 Difference]: Finished difference Result 5949 states and 8528 transitions. [2022-03-18 05:50:25,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:50:25,061 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 [2022-03-18 05:50:25,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:50:25,075 INFO L225 Difference]: With dead ends: 5949 [2022-03-18 05:50:25,076 INFO L226 Difference]: Without dead ends: 5919 [2022-03-18 05:50:25,077 INFO L911 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 [2022-03-18 05:50:25,078 INFO L912 BasicCegarLoop]: 2747 mSDtfsCounter, 9 mSDsluCounter, 24668 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:50:25,078 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 27415 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 05:50:25,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5919 states. [2022-03-18 05:50:26,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5919 to 5919. [2022-03-18 05:50:26,220 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) [2022-03-18 05:50:26,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5919 states to 5919 states and 8493 transitions. [2022-03-18 05:50:26,236 INFO L78 Accepts]: Start accepts. Automaton has 5919 states and 8493 transitions. Word has length 76 [2022-03-18 05:50:26,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:50:26,236 INFO L478 AbstractCegarLoop]: Abstraction has 5919 states and 8493 transitions. [2022-03-18 05:50:26,236 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) [2022-03-18 05:50:26,236 INFO L276 IsEmpty]: Start isEmpty. Operand 5919 states and 8493 transitions. [2022-03-18 05:50:26,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-18 05:50:26,238 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:50:26,238 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:50:26,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-03-18 05:50:26,438 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 [2022-03-18 05:50:26,439 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:50:26,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:50:26,439 INFO L85 PathProgramCache]: Analyzing trace with hash 2036422710, now seen corresponding path program 1 times [2022-03-18 05:50:26,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:50:26,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1750781946] [2022-03-18 05:50:26,441 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:50:26,441 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:50:26,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2036422710, now seen corresponding path program 2 times [2022-03-18 05:50:26,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:50:26,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153771051] [2022-03-18 05:50:26,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:50:26,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:50:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:26,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:50:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:26,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:50:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:26,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:50:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:26,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:50:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:26,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:50:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:26,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:50:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:26,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:50:26,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:50:26,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153771051] [2022-03-18 05:50:26,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153771051] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:50:26,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37409759] [2022-03-18 05:50:26,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:50:26,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:50:26,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:50:26,876 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) [2022-03-18 05:50:26,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-18 05:50:28,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:50:28,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:50:28,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-18 05:50:28,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:50:28,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:50:28,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:50:28,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37409759] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:50:28,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:50:28,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-03-18 05:50:28,098 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:50:28,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1750781946] [2022-03-18 05:50:28,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1750781946] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:50:28,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:50:28,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 05:50:28,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953720952] [2022-03-18 05:50:28,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:50:28,098 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 05:50:28,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:50:28,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 05:50:28,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:50:28,099 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) [2022-03-18 05:50:29,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:50:29,773 INFO L93 Difference]: Finished difference Result 7290 states and 10462 transitions. [2022-03-18 05:50:29,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 05:50:29,774 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 [2022-03-18 05:50:29,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:50:29,791 INFO L225 Difference]: With dead ends: 7290 [2022-03-18 05:50:29,791 INFO L226 Difference]: Without dead ends: 7277 [2022-03-18 05:50:29,793 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:50:29,794 INFO L912 BasicCegarLoop]: 4541 mSDtfsCounter, 1925 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1925 SdHoareTripleChecker+Valid, 7218 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:50:29,794 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1925 Valid, 7218 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 05:50:29,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7277 states. [2022-03-18 05:50:30,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7277 to 6045. [2022-03-18 05:50:30,978 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) [2022-03-18 05:50:30,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6045 states to 6045 states and 8637 transitions. [2022-03-18 05:50:30,993 INFO L78 Accepts]: Start accepts. Automaton has 6045 states and 8637 transitions. Word has length 67 [2022-03-18 05:50:30,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:50:30,994 INFO L478 AbstractCegarLoop]: Abstraction has 6045 states and 8637 transitions. [2022-03-18 05:50:30,994 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) [2022-03-18 05:50:30,994 INFO L276 IsEmpty]: Start isEmpty. Operand 6045 states and 8637 transitions. [2022-03-18 05:50:30,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-18 05:50:30,996 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:50:30,996 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:50:31,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-03-18 05:50:31,196 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 [2022-03-18 05:50:31,197 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:50:31,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:50:31,197 INFO L85 PathProgramCache]: Analyzing trace with hash -822110410, now seen corresponding path program 1 times [2022-03-18 05:50:31,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:50:31,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1137717844] [2022-03-18 05:50:31,203 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:50:31,204 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:50:31,204 INFO L85 PathProgramCache]: Analyzing trace with hash -822110410, now seen corresponding path program 2 times [2022-03-18 05:50:31,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:50:31,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355232380] [2022-03-18 05:50:31,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:50:31,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:50:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:31,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:50:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:31,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:50:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:31,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:50:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:31,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:50:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:31,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:50:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:31,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:50:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:31,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:50:31,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:50:31,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355232380] [2022-03-18 05:50:31,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355232380] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:50:31,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355641315] [2022-03-18 05:50:31,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:50:31,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:50:31,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:50:31,584 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) [2022-03-18 05:50:31,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-18 05:50:32,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:50:32,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:50:32,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-18 05:50:32,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:50:32,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:50:32,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:50:32,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355641315] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:50:32,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:50:32,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 9 [2022-03-18 05:50:32,795 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:50:32,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1137717844] [2022-03-18 05:50:32,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1137717844] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:50:32,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:50:32,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 05:50:32,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471606086] [2022-03-18 05:50:32,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:50:32,796 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 05:50:32,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:50:32,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 05:50:32,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:50:32,796 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) [2022-03-18 05:50:33,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:50:33,959 INFO L93 Difference]: Finished difference Result 8675 states and 12451 transitions. [2022-03-18 05:50:33,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 05:50:33,960 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 [2022-03-18 05:50:33,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:50:33,979 INFO L225 Difference]: With dead ends: 8675 [2022-03-18 05:50:33,979 INFO L226 Difference]: Without dead ends: 6071 [2022-03-18 05:50:33,989 INFO L911 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 [2022-03-18 05:50:33,990 INFO L912 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 [2022-03-18 05:50:33,990 INFO L913 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] [2022-03-18 05:50:33,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6071 states. [2022-03-18 05:50:35,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6071 to 6051. [2022-03-18 05:50:35,242 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) [2022-03-18 05:50:35,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6051 states to 6051 states and 8646 transitions. [2022-03-18 05:50:35,259 INFO L78 Accepts]: Start accepts. Automaton has 6051 states and 8646 transitions. Word has length 67 [2022-03-18 05:50:35,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:50:35,259 INFO L478 AbstractCegarLoop]: Abstraction has 6051 states and 8646 transitions. [2022-03-18 05:50:35,260 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) [2022-03-18 05:50:35,260 INFO L276 IsEmpty]: Start isEmpty. Operand 6051 states and 8646 transitions. [2022-03-18 05:50:35,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-18 05:50:35,261 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:50:35,262 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:50:35,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-03-18 05:50:35,462 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 [2022-03-18 05:50:35,462 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:50:35,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:50:35,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1783913144, now seen corresponding path program 1 times [2022-03-18 05:50:35,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:50:35,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1094097528] [2022-03-18 05:50:35,465 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:50:35,465 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:50:35,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1783913144, now seen corresponding path program 2 times [2022-03-18 05:50:35,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:50:35,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013325281] [2022-03-18 05:50:35,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:50:35,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:50:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:35,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:50:35,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:35,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:50:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:35,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:50:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:35,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:50:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:35,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:50:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:35,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:50:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:50:35,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:50:35,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013325281] [2022-03-18 05:50:35,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013325281] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:50:35,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184449780] [2022-03-18 05:50:35,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:50:35,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:50:35,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:50:35,802 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) [2022-03-18 05:50:35,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-18 05:50:36,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:50:36,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:50:36,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-18 05:50:36,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:50:37,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:50:37,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:50:37,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184449780] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:50:37,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:50:37,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-03-18 05:50:37,210 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:50:37,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1094097528] [2022-03-18 05:50:37,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1094097528] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:50:37,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:50:37,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:50:37,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160706583] [2022-03-18 05:50:37,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:50:37,211 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:50:37,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:50:37,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:50:37,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:50:37,212 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) [2022-03-18 05:50:42,717 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:50:48,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:50:48,110 INFO L93 Difference]: Finished difference Result 6122 states and 8729 transitions. [2022-03-18 05:50:48,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:50:48,110 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 [2022-03-18 05:50:48,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:50:48,122 INFO L225 Difference]: With dead ends: 6122 [2022-03-18 05:50:48,123 INFO L226 Difference]: Without dead ends: 5892 [2022-03-18 05:50:48,124 INFO L911 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 [2022-03-18 05:50:48,125 INFO L912 BasicCegarLoop]: 2263 mSDtfsCounter, 3392 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 5091 mSolverCounterSat, 1351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3819 SdHoareTripleChecker+Valid, 3385 SdHoareTripleChecker+Invalid, 6442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1351 IncrementalHoareTripleChecker+Valid, 5091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:50:48,125 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3819 Valid, 3385 Invalid, 6442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1351 Valid, 5091 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-03-18 05:50:48,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5892 states. [2022-03-18 05:50:49,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5892 to 5890. [2022-03-18 05:50:49,355 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) [2022-03-18 05:50:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5890 states to 5890 states and 8455 transitions. [2022-03-18 05:50:49,371 INFO L78 Accepts]: Start accepts. Automaton has 5890 states and 8455 transitions. Word has length 67 [2022-03-18 05:50:49,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:50:49,371 INFO L478 AbstractCegarLoop]: Abstraction has 5890 states and 8455 transitions. [2022-03-18 05:50:49,372 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) [2022-03-18 05:50:49,372 INFO L276 IsEmpty]: Start isEmpty. Operand 5890 states and 8455 transitions. [2022-03-18 05:50:49,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-18 05:50:49,373 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:50:49,373 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:50:49,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-18 05:50:49,575 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 [2022-03-18 05:50:49,576 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:50:49,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:50:49,576 INFO L85 PathProgramCache]: Analyzing trace with hash -844197040, now seen corresponding path program 1 times [2022-03-18 05:50:49,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:50:49,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1542554460] [2022-03-18 05:50:49,578 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:50:49,578 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:50:49,578 INFO L85 PathProgramCache]: Analyzing trace with hash -844197040, now seen corresponding path program 2 times [2022-03-18 05:50:49,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:50:49,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418987764] [2022-03-18 05:50:49,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:50:49,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:50:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:49,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:50:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:49,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:50:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:49,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:50:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:49,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:50:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:49,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:50:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:49,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:50:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:49,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:50:49,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:50:49,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418987764] [2022-03-18 05:50:49,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418987764] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:50:49,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462803925] [2022-03-18 05:50:49,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:50:49,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:50:49,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:50:49,988 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) [2022-03-18 05:50:49,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-18 05:50:51,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:50:51,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:50:51,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-18 05:50:51,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:50:51,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:50:51,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:50:51,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462803925] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:50:51,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:50:51,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2022-03-18 05:50:51,298 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:50:51,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1542554460] [2022-03-18 05:50:51,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1542554460] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:50:51,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:50:51,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:50:51,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661313305] [2022-03-18 05:50:51,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:50:51,299 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:50:51,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:50:51,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:50:51,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-03-18 05:50:51,299 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) [2022-03-18 05:50:52,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:50:52,847 INFO L93 Difference]: Finished difference Result 5929 states and 8500 transitions. [2022-03-18 05:50:52,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 05:50:52,847 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 [2022-03-18 05:50:52,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:50:52,859 INFO L225 Difference]: With dead ends: 5929 [2022-03-18 05:50:52,859 INFO L226 Difference]: Without dead ends: 5925 [2022-03-18 05:50:52,861 INFO L911 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 [2022-03-18 05:50:52,861 INFO L912 BasicCegarLoop]: 2719 mSDtfsCounter, 11 mSDsluCounter, 19015 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:50:52,861 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 21734 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 05:50:52,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5925 states. [2022-03-18 05:50:54,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5925 to 5910. [2022-03-18 05:50:54,093 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) [2022-03-18 05:50:54,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5910 states to 5910 states and 8480 transitions. [2022-03-18 05:50:54,109 INFO L78 Accepts]: Start accepts. Automaton has 5910 states and 8480 transitions. Word has length 68 [2022-03-18 05:50:54,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:50:54,109 INFO L478 AbstractCegarLoop]: Abstraction has 5910 states and 8480 transitions. [2022-03-18 05:50:54,109 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) [2022-03-18 05:50:54,109 INFO L276 IsEmpty]: Start isEmpty. Operand 5910 states and 8480 transitions. [2022-03-18 05:50:54,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-18 05:50:54,111 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:50:54,111 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:50:54,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-18 05:50:54,327 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 [2022-03-18 05:50:54,327 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:50:54,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:50:54,328 INFO L85 PathProgramCache]: Analyzing trace with hash -843920210, now seen corresponding path program 1 times [2022-03-18 05:50:54,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:50:54,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1457321684] [2022-03-18 05:50:54,330 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:50:54,330 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:50:54,331 INFO L85 PathProgramCache]: Analyzing trace with hash -843920210, now seen corresponding path program 2 times [2022-03-18 05:50:54,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:50:54,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5016050] [2022-03-18 05:50:54,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:50:54,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:50:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:54,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:50:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:54,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:50:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:54,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:50:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:54,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:50:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:54,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:50:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:54,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:50:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:50:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:50:54,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:50:54,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5016050] [2022-03-18 05:50:54,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5016050] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:50:54,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379004135] [2022-03-18 05:50:54,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:50:54,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:50:54,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:50:54,736 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) [2022-03-18 05:50:54,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-18 05:50:55,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:50:55,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:50:55,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-18 05:50:55,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:50:56,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:50:56,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:50:56,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379004135] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:50:56,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:50:56,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2022-03-18 05:50:56,232 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:50:56,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1457321684] [2022-03-18 05:50:56,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1457321684] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:50:56,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:50:56,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:50:56,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967876827] [2022-03-18 05:50:56,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:50:56,233 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:50:56,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:50:56,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:50:56,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-03-18 05:50:56,233 INFO L87 Difference]: Start difference. First operand 5910 states and 8480 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:51:01,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:51:01,150 INFO L93 Difference]: Finished difference Result 6102 states and 8704 transitions. [2022-03-18 05:51:01,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:51:01,150 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 68 [2022-03-18 05:51:01,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:51:01,164 INFO L225 Difference]: With dead ends: 6102 [2022-03-18 05:51:01,165 INFO L226 Difference]: Without dead ends: 6084 [2022-03-18 05:51:01,167 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-18 05:51:01,167 INFO L912 BasicCegarLoop]: 3080 mSDtfsCounter, 2655 mSDsluCounter, 18253 mSDsCounter, 0 mSdLazyCounter, 4951 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2660 SdHoareTripleChecker+Valid, 21333 SdHoareTripleChecker+Invalid, 4962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 4951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:51:01,167 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2660 Valid, 21333 Invalid, 4962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 4951 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-03-18 05:51:01,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6084 states. [2022-03-18 05:51:02,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6084 to 5939. [2022-03-18 05:51:02,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5939 states, 3967 states have (on average 1.3516511217544744) internal successors, (5362), 4085 states have internal predecessors, (5362), 1568 states have call successors, (1568), 389 states have call predecessors, (1568), 403 states have return successors, (1586), 1531 states have call predecessors, (1586), 1557 states have call successors, (1586) [2022-03-18 05:51:02,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5939 states to 5939 states and 8516 transitions. [2022-03-18 05:51:02,540 INFO L78 Accepts]: Start accepts. Automaton has 5939 states and 8516 transitions. Word has length 68 [2022-03-18 05:51:02,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:51:02,540 INFO L478 AbstractCegarLoop]: Abstraction has 5939 states and 8516 transitions. [2022-03-18 05:51:02,540 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:51:02,540 INFO L276 IsEmpty]: Start isEmpty. Operand 5939 states and 8516 transitions. [2022-03-18 05:51:02,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-18 05:51:02,542 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:51:02,542 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:51:02,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-03-18 05:51:02,742 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 [2022-03-18 05:51:02,742 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:51:02,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:51:02,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1268963390, now seen corresponding path program 1 times [2022-03-18 05:51:02,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:51:02,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [246163453] [2022-03-18 05:51:02,745 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:51:02,745 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:51:02,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1268963390, now seen corresponding path program 2 times [2022-03-18 05:51:02,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:51:02,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679757505] [2022-03-18 05:51:02,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:51:02,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:51:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:02,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:51:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:03,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:51:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:03,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:51:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:03,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-18 05:51:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:03,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:51:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:03,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-18 05:51:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:03,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-03-18 05:51:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:03,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:51:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:03,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:51:03,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:51:03,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679757505] [2022-03-18 05:51:03,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679757505] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:51:03,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239898225] [2022-03-18 05:51:03,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:51:03,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:51:03,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:51:03,128 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) [2022-03-18 05:51:03,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-18 05:51:04,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:51:04,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:51:04,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-18 05:51:04,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:51:04,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:51:04,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:51:04,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239898225] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:51:04,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:51:04,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-03-18 05:51:04,577 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:51:04,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [246163453] [2022-03-18 05:51:04,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [246163453] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:51:04,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:51:04,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 05:51:04,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382547169] [2022-03-18 05:51:04,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:51:04,578 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 05:51:04,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:51:04,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 05:51:04,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:51:04,579 INFO L87 Difference]: Start difference. First operand 5939 states and 8516 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-18 05:51:06,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:51:06,020 INFO L93 Difference]: Finished difference Result 5988 states and 8574 transitions. [2022-03-18 05:51:06,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 05:51:06,021 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 [2022-03-18 05:51:06,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:51:06,035 INFO L225 Difference]: With dead ends: 5988 [2022-03-18 05:51:06,035 INFO L226 Difference]: Without dead ends: 5984 [2022-03-18 05:51:06,037 INFO L911 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 [2022-03-18 05:51:06,037 INFO L912 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 [2022-03-18 05:51:06,037 INFO L913 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] [2022-03-18 05:51:06,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5984 states. [2022-03-18 05:51:07,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5984 to 5937. [2022-03-18 05:51:07,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5937 states, 3967 states have (on average 1.351146962440131) internal successors, (5360), 4083 states have internal predecessors, (5360), 1566 states have call successors, (1566), 389 states have call predecessors, (1566), 403 states have return successors, (1586), 1531 states have call predecessors, (1586), 1557 states have call successors, (1586) [2022-03-18 05:51:07,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5937 states to 5937 states and 8512 transitions. [2022-03-18 05:51:07,380 INFO L78 Accepts]: Start accepts. Automaton has 5937 states and 8512 transitions. Word has length 74 [2022-03-18 05:51:07,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:51:07,381 INFO L478 AbstractCegarLoop]: Abstraction has 5937 states and 8512 transitions. [2022-03-18 05:51:07,381 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) [2022-03-18 05:51:07,381 INFO L276 IsEmpty]: Start isEmpty. Operand 5937 states and 8512 transitions. [2022-03-18 05:51:07,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 05:51:07,383 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:51:07,383 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:51:07,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-03-18 05:51:07,583 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 [2022-03-18 05:51:07,583 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:51:07,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:51:07,584 INFO L85 PathProgramCache]: Analyzing trace with hash 961252362, now seen corresponding path program 1 times [2022-03-18 05:51:07,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:51:07,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1543826028] [2022-03-18 05:51:07,586 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:51:07,586 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:51:07,586 INFO L85 PathProgramCache]: Analyzing trace with hash 961252362, now seen corresponding path program 2 times [2022-03-18 05:51:07,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:51:07,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030043646] [2022-03-18 05:51:07,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:51:07,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:51:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:07,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:51:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:07,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:51:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:07,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:51:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:07,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:51:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:07,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:51:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:07,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:51:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:07,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:51:07,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:51:07,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030043646] [2022-03-18 05:51:07,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030043646] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:51:07,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607970346] [2022-03-18 05:51:07,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:51:07,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:51:07,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:51:07,960 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) [2022-03-18 05:51:07,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-18 05:51:09,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:51:09,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:51:09,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 1614 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-18 05:51:09,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:51:09,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:51:09,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:51:09,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607970346] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:51:09,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:51:09,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2022-03-18 05:51:09,427 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:51:09,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1543826028] [2022-03-18 05:51:09,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1543826028] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:51:09,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:51:09,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:51:09,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256162980] [2022-03-18 05:51:09,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:51:09,428 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 05:51:09,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:51:09,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 05:51:09,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:51:09,428 INFO L87 Difference]: Start difference. First operand 5937 states and 8512 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:51:11,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:51:11,016 INFO L93 Difference]: Finished difference Result 5957 states and 8534 transitions. [2022-03-18 05:51:11,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 05:51:11,017 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 69 [2022-03-18 05:51:11,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:51:11,030 INFO L225 Difference]: With dead ends: 5957 [2022-03-18 05:51:11,030 INFO L226 Difference]: Without dead ends: 5939 [2022-03-18 05:51:11,032 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-03-18 05:51:11,032 INFO L912 BasicCegarLoop]: 2730 mSDtfsCounter, 12 mSDsluCounter, 18963 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 21693 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:51:11,032 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 21693 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 05:51:11,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5939 states. [2022-03-18 05:51:12,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5939 to 5894. [2022-03-18 05:51:12,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5894 states, 3933 states have (on average 1.3526570048309179) internal successors, (5320), 4046 states have internal predecessors, (5320), 1562 states have call successors, (1562), 386 states have call predecessors, (1562), 398 states have return successors, (1577), 1526 states have call predecessors, (1577), 1553 states have call successors, (1577) [2022-03-18 05:51:12,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5894 states to 5894 states and 8459 transitions. [2022-03-18 05:51:12,364 INFO L78 Accepts]: Start accepts. Automaton has 5894 states and 8459 transitions. Word has length 69 [2022-03-18 05:51:12,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:51:12,364 INFO L478 AbstractCegarLoop]: Abstraction has 5894 states and 8459 transitions. [2022-03-18 05:51:12,365 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:51:12,365 INFO L276 IsEmpty]: Start isEmpty. Operand 5894 states and 8459 transitions. [2022-03-18 05:51:12,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 05:51:12,366 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:51:12,366 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:51:12,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-18 05:51:12,567 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 [2022-03-18 05:51:12,567 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:51:12,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:51:12,567 INFO L85 PathProgramCache]: Analyzing trace with hash -978476308, now seen corresponding path program 1 times [2022-03-18 05:51:12,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:51:12,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1060889566] [2022-03-18 05:51:12,569 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:51:12,569 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:51:12,570 INFO L85 PathProgramCache]: Analyzing trace with hash -978476308, now seen corresponding path program 2 times [2022-03-18 05:51:12,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:51:12,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429850586] [2022-03-18 05:51:12,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:51:12,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:51:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:12,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:51:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:12,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:51:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:12,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:51:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:13,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:51:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:13,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:51:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:13,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:51:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:51:13,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:51:13,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:51:13,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429850586] [2022-03-18 05:51:13,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429850586] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:51:13,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:51:13,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:51:13,087 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:51:13,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1060889566] [2022-03-18 05:51:13,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1060889566] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:51:13,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:51:13,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:51:13,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641104413] [2022-03-18 05:51:13,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:51:13,088 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:51:13,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:51:13,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:51:13,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-03-18 05:51:13,088 INFO L87 Difference]: Start difference. First operand 5894 states and 8459 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 05:51:20,541 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 [] [2022-03-18 05:51:22,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:51:24,719 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:51:26,739 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:51:28,757 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:51:38,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:51:39,591 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:52:01,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:52:01,170 INFO L93 Difference]: Finished difference Result 7973 states and 11561 transitions. [2022-03-18 05:52:01,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-18 05:52:01,170 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 69 [2022-03-18 05:52:01,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:52:01,188 INFO L225 Difference]: With dead ends: 7973 [2022-03-18 05:52:01,188 INFO L226 Difference]: Without dead ends: 7967 [2022-03-18 05:52:01,191 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2022-03-18 05:52:01,191 INFO L912 BasicCegarLoop]: 3395 mSDtfsCounter, 7079 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 9751 mSolverCounterSat, 5727 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7109 SdHoareTripleChecker+Valid, 3969 SdHoareTripleChecker+Invalid, 15484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5727 IncrementalHoareTripleChecker+Valid, 9751 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.6s IncrementalHoareTripleChecker+Time [2022-03-18 05:52:01,191 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [7109 Valid, 3969 Invalid, 15484 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5727 Valid, 9751 Invalid, 6 Unknown, 0 Unchecked, 43.6s Time] [2022-03-18 05:52:01,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7967 states. [2022-03-18 05:52:02,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7967 to 5897. [2022-03-18 05:52:02,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5897 states, 3936 states have (on average 1.3521341463414633) internal successors, (5322), 4049 states have internal predecessors, (5322), 1562 states have call successors, (1562), 386 states have call predecessors, (1562), 398 states have return successors, (1577), 1526 states have call predecessors, (1577), 1553 states have call successors, (1577) [2022-03-18 05:52:02,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5897 states to 5897 states and 8461 transitions. [2022-03-18 05:52:02,958 INFO L78 Accepts]: Start accepts. Automaton has 5897 states and 8461 transitions. Word has length 69 [2022-03-18 05:52:02,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:52:02,958 INFO L478 AbstractCegarLoop]: Abstraction has 5897 states and 8461 transitions. [2022-03-18 05:52:02,958 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-18 05:52:02,958 INFO L276 IsEmpty]: Start isEmpty. Operand 5897 states and 8461 transitions. [2022-03-18 05:52:02,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 05:52:02,960 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:52:02,960 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:52:02,960 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-18 05:52:02,960 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:52:02,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:52:02,960 INFO L85 PathProgramCache]: Analyzing trace with hash -978199478, now seen corresponding path program 1 times [2022-03-18 05:52:02,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:52:02,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [878196822] [2022-03-18 05:52:02,962 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:52:02,962 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:52:02,962 INFO L85 PathProgramCache]: Analyzing trace with hash -978199478, now seen corresponding path program 2 times [2022-03-18 05:52:02,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:52:02,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122408675] [2022-03-18 05:52:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:52:02,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:52:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:03,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:52:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:03,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:52:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:03,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:52:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:03,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:52:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:03,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:52:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:03,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 05:52:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:03,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:52:03,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:52:03,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122408675] [2022-03-18 05:52:03,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122408675] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:52:03,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31474206] [2022-03-18 05:52:03,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:52:03,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:52:03,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:52:03,360 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) [2022-03-18 05:52:03,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-18 05:52:04,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:52:04,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:52:04,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-18 05:52:04,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:52:04,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:52:04,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:52:04,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31474206] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:52:04,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:52:04,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2022-03-18 05:52:04,849 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:52:04,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [878196822] [2022-03-18 05:52:04,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [878196822] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:52:04,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:52:04,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:52:04,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120893438] [2022-03-18 05:52:04,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:52:04,849 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 05:52:04,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:52:04,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 05:52:04,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:52:04,850 INFO L87 Difference]: Start difference. First operand 5897 states and 8461 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:52:06,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:52:06,828 INFO L93 Difference]: Finished difference Result 7206 states and 10352 transitions. [2022-03-18 05:52:06,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 05:52:06,828 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 69 [2022-03-18 05:52:06,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:52:06,844 INFO L225 Difference]: With dead ends: 7206 [2022-03-18 05:52:06,844 INFO L226 Difference]: Without dead ends: 5903 [2022-03-18 05:52:06,849 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-03-18 05:52:06,850 INFO L912 BasicCegarLoop]: 2729 mSDtfsCounter, 8 mSDsluCounter, 21661 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 24390 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:52:06,850 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 24390 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 05:52:06,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2022-03-18 05:52:08,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 5887. [2022-03-18 05:52:08,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5887 states, 3928 states have (on average 1.3520875763747455) internal successors, (5311), 4040 states have internal predecessors, (5311), 1561 states have call successors, (1561), 386 states have call predecessors, (1561), 397 states have return successors, (1573), 1525 states have call predecessors, (1573), 1552 states have call successors, (1573) [2022-03-18 05:52:08,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5887 states to 5887 states and 8445 transitions. [2022-03-18 05:52:08,538 INFO L78 Accepts]: Start accepts. Automaton has 5887 states and 8445 transitions. Word has length 69 [2022-03-18 05:52:08,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:52:08,538 INFO L478 AbstractCegarLoop]: Abstraction has 5887 states and 8445 transitions. [2022-03-18 05:52:08,538 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:52:08,539 INFO L276 IsEmpty]: Start isEmpty. Operand 5887 states and 8445 transitions. [2022-03-18 05:52:08,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 05:52:08,540 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:52:08,540 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:52:08,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-18 05:52:08,741 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 [2022-03-18 05:52:08,741 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:52:08,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:52:08,741 INFO L85 PathProgramCache]: Analyzing trace with hash 635026972, now seen corresponding path program 1 times [2022-03-18 05:52:08,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:52:08,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [555731329] [2022-03-18 05:52:08,743 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:52:08,744 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:52:08,744 INFO L85 PathProgramCache]: Analyzing trace with hash 635026972, now seen corresponding path program 2 times [2022-03-18 05:52:08,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:52:08,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222227900] [2022-03-18 05:52:08,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:52:08,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:52:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:08,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:52:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:09,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:52:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:09,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:52:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:09,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:52:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:09,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:52:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:09,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-18 05:52:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:09,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:52:09,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:52:09,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222227900] [2022-03-18 05:52:09,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222227900] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:52:09,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760289721] [2022-03-18 05:52:09,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:52:09,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:52:09,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:52:09,102 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) [2022-03-18 05:52:09,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-18 05:52:10,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:52:10,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:52:10,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-18 05:52:10,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:52:10,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:52:10,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:52:10,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760289721] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:52:10,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:52:10,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2022-03-18 05:52:10,624 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:52:10,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [555731329] [2022-03-18 05:52:10,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [555731329] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:52:10,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:52:10,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:52:10,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407261635] [2022-03-18 05:52:10,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:52:10,625 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:52:10,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:52:10,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:52:10,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-03-18 05:52:10,625 INFO L87 Difference]: Start difference. First operand 5887 states and 8445 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 9 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:52:16,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:52:16,380 INFO L93 Difference]: Finished difference Result 6081 states and 8669 transitions. [2022-03-18 05:52:16,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:52:16,381 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 9 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 69 [2022-03-18 05:52:16,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:52:16,395 INFO L225 Difference]: With dead ends: 6081 [2022-03-18 05:52:16,395 INFO L226 Difference]: Without dead ends: 6063 [2022-03-18 05:52:16,397 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-18 05:52:16,398 INFO L912 BasicCegarLoop]: 3073 mSDtfsCounter, 2647 mSDsluCounter, 18544 mSDsCounter, 0 mSdLazyCounter, 5868 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2651 SdHoareTripleChecker+Valid, 21617 SdHoareTripleChecker+Invalid, 5879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 5868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-03-18 05:52:16,398 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2651 Valid, 21617 Invalid, 5879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 5868 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-03-18 05:52:16,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6063 states. [2022-03-18 05:52:18,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6063 to 5893. [2022-03-18 05:52:18,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5893 states, 3933 states have (on average 1.3516399694889398) internal successors, (5316), 4046 states have internal predecessors, (5316), 1561 states have call successors, (1561), 386 states have call predecessors, (1561), 398 states have return successors, (1575), 1525 states have call predecessors, (1575), 1552 states have call successors, (1575) [2022-03-18 05:52:18,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5893 states to 5893 states and 8452 transitions. [2022-03-18 05:52:18,121 INFO L78 Accepts]: Start accepts. Automaton has 5893 states and 8452 transitions. Word has length 69 [2022-03-18 05:52:18,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:52:18,122 INFO L478 AbstractCegarLoop]: Abstraction has 5893 states and 8452 transitions. [2022-03-18 05:52:18,122 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 9 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:52:18,122 INFO L276 IsEmpty]: Start isEmpty. Operand 5893 states and 8452 transitions. [2022-03-18 05:52:18,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-18 05:52:18,124 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:52:18,124 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:52:18,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-18 05:52:18,324 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 [2022-03-18 05:52:18,324 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:52:18,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:52:18,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1348122222, now seen corresponding path program 1 times [2022-03-18 05:52:18,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:52:18,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [333608371] [2022-03-18 05:52:18,327 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:52:18,327 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:52:18,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1348122222, now seen corresponding path program 2 times [2022-03-18 05:52:18,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:52:18,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549347079] [2022-03-18 05:52:18,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:52:18,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:52:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:18,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:52:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:18,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:52:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:18,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:52:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:18,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:52:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:18,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:52:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:18,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-18 05:52:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:18,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:52:18,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:52:18,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549347079] [2022-03-18 05:52:18,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549347079] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:52:18,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086490235] [2022-03-18 05:52:18,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:52:18,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:52:18,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:52:18,696 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) [2022-03-18 05:52:18,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-18 05:52:19,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:52:19,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:52:19,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-18 05:52:19,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:52:20,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:52:20,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:52:20,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086490235] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:52:20,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:52:20,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2022-03-18 05:52:20,223 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:52:20,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [333608371] [2022-03-18 05:52:20,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [333608371] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:52:20,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:52:20,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:52:20,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035245010] [2022-03-18 05:52:20,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:52:20,224 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 05:52:20,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:52:20,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 05:52:20,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:52:20,224 INFO L87 Difference]: Start difference. First operand 5893 states and 8452 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:52:22,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:52:22,128 INFO L93 Difference]: Finished difference Result 5933 states and 8498 transitions. [2022-03-18 05:52:22,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 05:52:22,128 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 70 [2022-03-18 05:52:22,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:52:22,143 INFO L225 Difference]: With dead ends: 5933 [2022-03-18 05:52:22,143 INFO L226 Difference]: Without dead ends: 5915 [2022-03-18 05:52:22,145 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-03-18 05:52:22,145 INFO L912 BasicCegarLoop]: 2722 mSDtfsCounter, 8 mSDsluCounter, 21606 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 24328 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:52:22,146 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 24328 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 05:52:22,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5915 states. [2022-03-18 05:52:23,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5915 to 5893. [2022-03-18 05:52:23,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5893 states, 3933 states have (on average 1.3516399694889398) internal successors, (5316), 4046 states have internal predecessors, (5316), 1561 states have call successors, (1561), 386 states have call predecessors, (1561), 398 states have return successors, (1575), 1525 states have call predecessors, (1575), 1552 states have call successors, (1575) [2022-03-18 05:52:23,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5893 states to 5893 states and 8452 transitions. [2022-03-18 05:52:23,839 INFO L78 Accepts]: Start accepts. Automaton has 5893 states and 8452 transitions. Word has length 70 [2022-03-18 05:52:23,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:52:23,839 INFO L478 AbstractCegarLoop]: Abstraction has 5893 states and 8452 transitions. [2022-03-18 05:52:23,839 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:52:23,840 INFO L276 IsEmpty]: Start isEmpty. Operand 5893 states and 8452 transitions. [2022-03-18 05:52:23,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-18 05:52:23,841 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:52:23,841 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:52:23,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-03-18 05:52:24,042 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 [2022-03-18 05:52:24,042 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:52:24,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:52:24,043 INFO L85 PathProgramCache]: Analyzing trace with hash -591329618, now seen corresponding path program 1 times [2022-03-18 05:52:24,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:52:24,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1069057663] [2022-03-18 05:52:24,045 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:52:24,045 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:52:24,045 INFO L85 PathProgramCache]: Analyzing trace with hash -591329618, now seen corresponding path program 2 times [2022-03-18 05:52:24,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:52:24,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157527868] [2022-03-18 05:52:24,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:52:24,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:52:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:24,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:52:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:24,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:52:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:24,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:52:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:24,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:52:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:24,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:52:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:24,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-18 05:52:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:24,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:52:24,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:52:24,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157527868] [2022-03-18 05:52:24,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157527868] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:52:24,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028949528] [2022-03-18 05:52:24,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:52:24,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:52:24,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:52:24,358 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) [2022-03-18 05:52:24,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-18 05:52:25,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:52:25,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:52:25,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-18 05:52:25,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:52:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:52:25,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:52:25,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028949528] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:52:25,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:52:25,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2022-03-18 05:52:25,904 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:52:25,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1069057663] [2022-03-18 05:52:25,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1069057663] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:52:25,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:52:25,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 05:52:25,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830054315] [2022-03-18 05:52:25,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:52:25,905 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 05:52:25,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:52:25,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 05:52:25,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-03-18 05:52:25,905 INFO L87 Difference]: Start difference. First operand 5893 states and 8452 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:52:27,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:52:27,847 INFO L93 Difference]: Finished difference Result 5916 states and 8477 transitions. [2022-03-18 05:52:27,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 05:52:27,847 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 70 [2022-03-18 05:52:27,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:52:27,859 INFO L225 Difference]: With dead ends: 5916 [2022-03-18 05:52:27,859 INFO L226 Difference]: Without dead ends: 5881 [2022-03-18 05:52:27,860 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-03-18 05:52:27,860 INFO L912 BasicCegarLoop]: 2721 mSDtfsCounter, 8 mSDsluCounter, 21602 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 24323 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:52:27,861 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 24323 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 05:52:27,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5881 states. [2022-03-18 05:52:29,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5881 to 5865. [2022-03-18 05:52:29,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5865 states, 3911 states have (on average 1.3531066223472257) internal successors, (5292), 4023 states have internal predecessors, (5292), 1558 states have call successors, (1558), 384 states have call predecessors, (1558), 395 states have return successors, (1570), 1522 states have call predecessors, (1570), 1549 states have call successors, (1570) [2022-03-18 05:52:29,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5865 states to 5865 states and 8420 transitions. [2022-03-18 05:52:29,567 INFO L78 Accepts]: Start accepts. Automaton has 5865 states and 8420 transitions. Word has length 70 [2022-03-18 05:52:29,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:52:29,567 INFO L478 AbstractCegarLoop]: Abstraction has 5865 states and 8420 transitions. [2022-03-18 05:52:29,567 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 05:52:29,567 INFO L276 IsEmpty]: Start isEmpty. Operand 5865 states and 8420 transitions. [2022-03-18 05:52:29,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-18 05:52:29,569 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:52:29,569 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:52:29,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-03-18 05:52:29,770 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 [2022-03-18 05:52:29,770 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:52:29,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:52:29,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1578229099, now seen corresponding path program 1 times [2022-03-18 05:52:29,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:52:29,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1826905695] [2022-03-18 05:52:29,772 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:52:29,773 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:52:29,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1578229099, now seen corresponding path program 2 times [2022-03-18 05:52:29,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:52:29,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068308385] [2022-03-18 05:52:29,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:52:29,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:52:29,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:29,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:52:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:30,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:52:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:30,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:52:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:30,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:52:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:30,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:52:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:30,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 05:52:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:30,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-18 05:52:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:30,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 05:52:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:30,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:52:30,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:52:30,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068308385] [2022-03-18 05:52:30,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068308385] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:52:30,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048171976] [2022-03-18 05:52:30,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:52:30,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:52:30,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:52:30,100 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) [2022-03-18 05:52:30,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-18 05:52:31,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:52:31,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:52:31,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-18 05:52:31,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:52:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:52:31,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:52:31,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048171976] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:52:31,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:52:31,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-03-18 05:52:31,490 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:52:31,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1826905695] [2022-03-18 05:52:31,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1826905695] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:52:31,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:52:31,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 05:52:31,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013468018] [2022-03-18 05:52:31,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:52:31,491 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 05:52:31,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:52:31,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 05:52:31,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-18 05:52:31,491 INFO L87 Difference]: Start difference. First operand 5865 states and 8420 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-18 05:52:33,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:52:33,352 INFO L93 Difference]: Finished difference Result 8384 states and 12093 transitions. [2022-03-18 05:52:33,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 05:52:33,352 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 [2022-03-18 05:52:33,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:52:33,370 INFO L225 Difference]: With dead ends: 8384 [2022-03-18 05:52:33,370 INFO L226 Difference]: Without dead ends: 5845 [2022-03-18 05:52:33,379 INFO L911 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 [2022-03-18 05:52:33,379 INFO L912 BasicCegarLoop]: 2696 mSDtfsCounter, 19 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-03-18 05:52:33,380 INFO L913 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] [2022-03-18 05:52:33,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5845 states. [2022-03-18 05:52:35,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5845 to 5845. [2022-03-18 05:52:35,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5845 states, 3899 states have (on average 1.352911002821236) internal successors, (5275), 4009 states have internal predecessors, (5275), 1554 states have call successors, (1554), 382 states have call predecessors, (1554), 391 states have return successors, (1566), 1518 states have call predecessors, (1566), 1547 states have call successors, (1566) [2022-03-18 05:52:35,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5845 states to 5845 states and 8395 transitions. [2022-03-18 05:52:35,079 INFO L78 Accepts]: Start accepts. Automaton has 5845 states and 8395 transitions. Word has length 76 [2022-03-18 05:52:35,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:52:35,080 INFO L478 AbstractCegarLoop]: Abstraction has 5845 states and 8395 transitions. [2022-03-18 05:52:35,080 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) [2022-03-18 05:52:35,080 INFO L276 IsEmpty]: Start isEmpty. Operand 5845 states and 8395 transitions. [2022-03-18 05:52:35,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-18 05:52:35,082 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:52:35,082 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:52:35,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-03-18 05:52:35,282 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 [2022-03-18 05:52:35,282 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:52:35,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:52:35,283 INFO L85 PathProgramCache]: Analyzing trace with hash -902471083, now seen corresponding path program 1 times [2022-03-18 05:52:35,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:52:35,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1157310692] [2022-03-18 05:52:35,286 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:52:35,286 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:52:35,286 INFO L85 PathProgramCache]: Analyzing trace with hash -902471083, now seen corresponding path program 2 times [2022-03-18 05:52:35,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:52:35,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846475936] [2022-03-18 05:52:35,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:52:35,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:52:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:35,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:52:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:35,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:52:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:35,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:52:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:35,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 05:52:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:35,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 05:52:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:35,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:52:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:35,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:52:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:35,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 05:52:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:35,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:52:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:35,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 05:52:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:35,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:52:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:35,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:52:35,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:52:35,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846475936] [2022-03-18 05:52:35,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846475936] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:52:35,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577551686] [2022-03-18 05:52:35,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:52:35,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:52:35,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:52:35,669 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) [2022-03-18 05:52:35,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-18 05:52:36,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:52:36,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:52:36,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-18 05:52:36,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:52:37,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:52:37,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:52:37,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577551686] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:52:37,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:52:37,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-03-18 05:52:37,201 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:52:37,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1157310692] [2022-03-18 05:52:37,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1157310692] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:52:37,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:52:37,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:52:37,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644899716] [2022-03-18 05:52:37,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:52:37,202 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:52:37,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:52:37,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:52:37,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:52:37,203 INFO L87 Difference]: Start difference. First operand 5845 states and 8395 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-18 05:52:39,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:52:39,209 INFO L93 Difference]: Finished difference Result 5860 states and 8412 transitions. [2022-03-18 05:52:39,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:52:39,210 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 [2022-03-18 05:52:39,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:52:39,221 INFO L225 Difference]: With dead ends: 5860 [2022-03-18 05:52:39,221 INFO L226 Difference]: Without dead ends: 5827 [2022-03-18 05:52:39,222 INFO L911 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 [2022-03-18 05:52:39,223 INFO L912 BasicCegarLoop]: 2677 mSDtfsCounter, 8 mSDsluCounter, 24066 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:52:39,223 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26743 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 05:52:39,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5827 states. [2022-03-18 05:52:40,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5827 to 5827. [2022-03-18 05:52:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5827 states, 3888 states have (on average 1.3536522633744856) internal successors, (5263), 3998 states have internal predecessors, (5263), 1549 states have call successors, (1549), 380 states have call predecessors, (1549), 389 states have return successors, (1561), 1513 states have call predecessors, (1561), 1542 states have call successors, (1561) [2022-03-18 05:52:40,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5827 states to 5827 states and 8373 transitions. [2022-03-18 05:52:40,904 INFO L78 Accepts]: Start accepts. Automaton has 5827 states and 8373 transitions. Word has length 78 [2022-03-18 05:52:40,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:52:40,904 INFO L478 AbstractCegarLoop]: Abstraction has 5827 states and 8373 transitions. [2022-03-18 05:52:40,904 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) [2022-03-18 05:52:40,905 INFO L276 IsEmpty]: Start isEmpty. Operand 5827 states and 8373 transitions. [2022-03-18 05:52:40,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-03-18 05:52:40,907 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:52:40,907 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:52:40,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-18 05:52:41,108 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 [2022-03-18 05:52:41,108 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:52:41,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:52:41,109 INFO L85 PathProgramCache]: Analyzing trace with hash -687831844, now seen corresponding path program 1 times [2022-03-18 05:52:41,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:52:41,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1025887592] [2022-03-18 05:52:41,111 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:52:41,111 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:52:41,111 INFO L85 PathProgramCache]: Analyzing trace with hash -687831844, now seen corresponding path program 2 times [2022-03-18 05:52:41,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:52:41,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710308329] [2022-03-18 05:52:41,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:52:41,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:52:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:41,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:52:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:41,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:52:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:41,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:52:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:41,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 05:52:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:41,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:52:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:41,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:52:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:41,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:52:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:41,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:52:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:41,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-18 05:52:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:41,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:52:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:41,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:52:41,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:52:41,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710308329] [2022-03-18 05:52:41,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710308329] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:52:41,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587631876] [2022-03-18 05:52:41,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:52:41,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:52:41,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:52:41,512 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) [2022-03-18 05:52:41,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-18 05:52:42,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:52:42,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:52:42,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 05:52:42,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:52:42,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:52:42,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:52:42,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587631876] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:52:42,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:52:42,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-18 05:52:42,982 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:52:42,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1025887592] [2022-03-18 05:52:42,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1025887592] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:52:42,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:52:42,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:52:42,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68195271] [2022-03-18 05:52:42,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:52:42,983 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:52:42,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:52:42,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:52:42,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:52:42,983 INFO L87 Difference]: Start difference. First operand 5827 states and 8373 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-03-18 05:52:45,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:52:47,099 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:52:48,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:52:48,913 INFO L93 Difference]: Finished difference Result 5849 states and 8399 transitions. [2022-03-18 05:52:48,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:52:48,914 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 [2022-03-18 05:52:48,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:52:48,929 INFO L225 Difference]: With dead ends: 5849 [2022-03-18 05:52:48,929 INFO L226 Difference]: Without dead ends: 5827 [2022-03-18 05:52:48,932 INFO L911 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 [2022-03-18 05:52:48,932 INFO L912 BasicCegarLoop]: 2679 mSDtfsCounter, 5 mSDsluCounter, 10649 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 13328 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:52:48,933 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 13328 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-03-18 05:52:48,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5827 states. [2022-03-18 05:52:50,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5827 to 5827. [2022-03-18 05:52:50,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5827 states, 3888 states have (on average 1.352880658436214) internal successors, (5260), 3998 states have internal predecessors, (5260), 1549 states have call successors, (1549), 380 states have call predecessors, (1549), 389 states have return successors, (1561), 1513 states have call predecessors, (1561), 1542 states have call successors, (1561) [2022-03-18 05:52:50,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5827 states to 5827 states and 8370 transitions. [2022-03-18 05:52:50,617 INFO L78 Accepts]: Start accepts. Automaton has 5827 states and 8370 transitions. Word has length 87 [2022-03-18 05:52:50,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:52:50,617 INFO L478 AbstractCegarLoop]: Abstraction has 5827 states and 8370 transitions. [2022-03-18 05:52:50,617 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) [2022-03-18 05:52:50,617 INFO L276 IsEmpty]: Start isEmpty. Operand 5827 states and 8370 transitions. [2022-03-18 05:52:50,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-03-18 05:52:50,620 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:52:50,620 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:52:50,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-03-18 05:52:50,821 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 [2022-03-18 05:52:50,821 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:52:50,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:52:50,822 INFO L85 PathProgramCache]: Analyzing trace with hash 186968625, now seen corresponding path program 1 times [2022-03-18 05:52:50,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:52:50,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1433900771] [2022-03-18 05:52:50,824 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:52:50,824 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:52:50,825 INFO L85 PathProgramCache]: Analyzing trace with hash 186968625, now seen corresponding path program 2 times [2022-03-18 05:52:50,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:52:50,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908935389] [2022-03-18 05:52:50,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:52:50,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:52:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:51,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:52:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:51,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:52:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:51,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:52:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:51,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:52:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:51,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 05:52:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:51,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:52:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:51,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-18 05:52:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:51,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 05:52:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:51,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 05:52:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:51,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:52:51,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:52:51,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908935389] [2022-03-18 05:52:51,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908935389] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:52:51,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393153879] [2022-03-18 05:52:51,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:52:51,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:52:51,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:52:51,200 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) [2022-03-18 05:52:51,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-18 05:52:52,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:52:52,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:52:52,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 2096 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-18 05:52:52,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:52:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:52:52,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:52:52,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393153879] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:52:52,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:52:52,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-03-18 05:52:52,716 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:52:52,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1433900771] [2022-03-18 05:52:52,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1433900771] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:52:52,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:52:52,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 05:52:52,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921161136] [2022-03-18 05:52:52,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:52:52,716 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 05:52:52,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:52:52,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 05:52:52,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:52:52,717 INFO L87 Difference]: Start difference. First operand 5827 states and 8370 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-18 05:52:54,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:52:54,058 INFO L93 Difference]: Finished difference Result 6752 states and 9657 transitions. [2022-03-18 05:52:54,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 05:52:54,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 86 [2022-03-18 05:52:54,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:52:54,071 INFO L225 Difference]: With dead ends: 6752 [2022-03-18 05:52:54,071 INFO L226 Difference]: Without dead ends: 4202 [2022-03-18 05:52:54,080 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:52:54,080 INFO L912 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 [2022-03-18 05:52:54,080 INFO L913 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] [2022-03-18 05:52:54,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4202 states. [2022-03-18 05:52:55,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4202 to 4084. [2022-03-18 05:52:55,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4084 states, 2708 states have (on average 1.3378877400295421) internal successors, (3623), 2781 states have internal predecessors, (3623), 1089 states have call successors, (1089), 279 states have call predecessors, (1089), 286 states have return successors, (1095), 1068 states have call predecessors, (1095), 1082 states have call successors, (1095) [2022-03-18 05:52:55,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4084 states to 4084 states and 5807 transitions. [2022-03-18 05:52:55,363 INFO L78 Accepts]: Start accepts. Automaton has 4084 states and 5807 transitions. Word has length 86 [2022-03-18 05:52:55,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:52:55,364 INFO L478 AbstractCegarLoop]: Abstraction has 4084 states and 5807 transitions. [2022-03-18 05:52:55,364 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-18 05:52:55,364 INFO L276 IsEmpty]: Start isEmpty. Operand 4084 states and 5807 transitions. [2022-03-18 05:52:55,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-18 05:52:55,366 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:52:55,366 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:52:55,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-03-18 05:52:55,567 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 [2022-03-18 05:52:55,567 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:52:55,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:52:55,567 INFO L85 PathProgramCache]: Analyzing trace with hash 889808946, now seen corresponding path program 1 times [2022-03-18 05:52:55,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:52:55,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [703355273] [2022-03-18 05:52:55,569 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:52:55,569 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:52:55,569 INFO L85 PathProgramCache]: Analyzing trace with hash 889808946, now seen corresponding path program 2 times [2022-03-18 05:52:55,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:52:55,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638682464] [2022-03-18 05:52:55,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:52:55,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:52:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:55,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:52:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:55,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:52:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:55,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:52:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:55,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 05:52:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:55,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:52:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:55,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:52:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:55,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 05:52:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:55,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:52:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:55,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-18 05:52:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:55,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:52:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:52:55,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:52:55,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:52:55,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638682464] [2022-03-18 05:52:55,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638682464] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:52:55,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898581511] [2022-03-18 05:52:55,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:52:55,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:52:55,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:52:56,000 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) [2022-03-18 05:52:56,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-18 05:52:57,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:52:57,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:52:57,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 05:52:57,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:52:57,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:52:57,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:52:57,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898581511] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:52:57,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:52:57,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-18 05:52:57,543 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:52:57,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [703355273] [2022-03-18 05:52:57,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [703355273] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:52:57,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:52:57,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:52:57,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007276602] [2022-03-18 05:52:57,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:52:57,543 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:52:57,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:52:57,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:52:57,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:52:57,544 INFO L87 Difference]: Start difference. First operand 4084 states and 5807 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-03-18 05:52:59,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:52:59,117 INFO L93 Difference]: Finished difference Result 4113 states and 5842 transitions. [2022-03-18 05:52:59,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 05:52:59,117 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 [2022-03-18 05:52:59,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:52:59,128 INFO L225 Difference]: With dead ends: 4113 [2022-03-18 05:52:59,128 INFO L226 Difference]: Without dead ends: 3669 [2022-03-18 05:52:59,131 INFO L911 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 [2022-03-18 05:52:59,131 INFO L912 BasicCegarLoop]: 2672 mSDtfsCounter, 17 mSDsluCounter, 10622 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 13294 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:52:59,132 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 13294 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 05:52:59,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3669 states. [2022-03-18 05:53:00,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3669 to 3642. [2022-03-18 05:53:00,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 2440 states have (on average 1.3364754098360656) internal successors, (3261), 2508 states have internal predecessors, (3261), 934 states have call successors, (934), 261 states have call predecessors, (934), 267 states have return successors, (939), 914 states have call predecessors, (939), 927 states have call successors, (939) [2022-03-18 05:53:00,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 5134 transitions. [2022-03-18 05:53:00,302 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 5134 transitions. Word has length 88 [2022-03-18 05:53:00,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:53:00,302 INFO L478 AbstractCegarLoop]: Abstraction has 3642 states and 5134 transitions. [2022-03-18 05:53:00,302 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) [2022-03-18 05:53:00,302 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 5134 transitions. [2022-03-18 05:53:00,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-03-18 05:53:00,304 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:53:00,304 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:53:00,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-18 05:53:00,504 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 [2022-03-18 05:53:00,505 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:53:00,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:53:00,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1084992937, now seen corresponding path program 1 times [2022-03-18 05:53:00,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:00,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1880975491] [2022-03-18 05:53:00,507 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:53:00,507 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:53:00,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1084992937, now seen corresponding path program 2 times [2022-03-18 05:53:00,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:53:00,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870062178] [2022-03-18 05:53:00,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:53:00,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:53:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:00,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:53:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:00,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:53:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:00,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:53:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:00,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 05:53:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:00,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:53:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:00,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:00,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 05:53:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:53:00,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:53:00,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870062178] [2022-03-18 05:53:00,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870062178] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:53:00,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443943625] [2022-03-18 05:53:00,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:53:00,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:53:00,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:53:00,893 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) [2022-03-18 05:53:00,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-18 05:53:02,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:53:02,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:53:02,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 05:53:02,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:53:02,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:53:02,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:53:02,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443943625] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:02,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:53:02,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-18 05:53:02,423 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:53:02,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1880975491] [2022-03-18 05:53:02,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1880975491] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:02,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:53:02,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:53:02,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111086300] [2022-03-18 05:53:02,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:53:02,424 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:53:02,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:02,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:53:02,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:53:02,424 INFO L87 Difference]: Start difference. First operand 3642 states and 5134 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:53:03,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:53:03,665 INFO L93 Difference]: Finished difference Result 3701 states and 5204 transitions. [2022-03-18 05:53:03,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 05:53:03,666 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 [2022-03-18 05:53:03,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:53:03,678 INFO L225 Difference]: With dead ends: 3701 [2022-03-18 05:53:03,678 INFO L226 Difference]: Without dead ends: 3654 [2022-03-18 05:53:03,680 INFO L911 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 [2022-03-18 05:53:03,681 INFO L912 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 [2022-03-18 05:53:03,681 INFO L913 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] [2022-03-18 05:53:03,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2022-03-18 05:53:04,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 3647. [2022-03-18 05:53:04,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3647 states, 2444 states have (on average 1.335924713584288) internal successors, (3265), 2512 states have internal predecessors, (3265), 934 states have call successors, (934), 261 states have call predecessors, (934), 268 states have return successors, (940), 915 states have call predecessors, (940), 927 states have call successors, (940) [2022-03-18 05:53:04,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3647 states to 3647 states and 5139 transitions. [2022-03-18 05:53:04,914 INFO L78 Accepts]: Start accepts. Automaton has 3647 states and 5139 transitions. Word has length 82 [2022-03-18 05:53:04,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:53:04,914 INFO L478 AbstractCegarLoop]: Abstraction has 3647 states and 5139 transitions. [2022-03-18 05:53:04,914 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) [2022-03-18 05:53:04,914 INFO L276 IsEmpty]: Start isEmpty. Operand 3647 states and 5139 transitions. [2022-03-18 05:53:04,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-18 05:53:04,916 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:53:04,916 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:53:04,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-03-18 05:53:05,116 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 [2022-03-18 05:53:05,117 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:53:05,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:53:05,117 INFO L85 PathProgramCache]: Analyzing trace with hash -10828563, now seen corresponding path program 1 times [2022-03-18 05:53:05,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:05,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [471002904] [2022-03-18 05:53:05,119 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:53:05,119 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:53:05,119 INFO L85 PathProgramCache]: Analyzing trace with hash -10828563, now seen corresponding path program 2 times [2022-03-18 05:53:05,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:53:05,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890375714] [2022-03-18 05:53:05,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:53:05,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:53:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:05,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:53:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:05,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:53:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:05,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:53:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:05,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 05:53:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:05,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:53:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:05,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:05,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 05:53:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:05,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:53:05,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:53:05,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890375714] [2022-03-18 05:53:05,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890375714] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:53:05,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317973759] [2022-03-18 05:53:05,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:53:05,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:53:05,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:53:05,515 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) [2022-03-18 05:53:05,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-18 05:53:06,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:53:06,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:53:06,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 1753 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 05:53:06,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:53:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:53:07,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:53:07,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317973759] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:07,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:53:07,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-18 05:53:07,087 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:53:07,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [471002904] [2022-03-18 05:53:07,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [471002904] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:07,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:53:07,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:53:07,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175394833] [2022-03-18 05:53:07,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:53:07,088 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:53:07,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:07,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:53:07,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:53:07,088 INFO L87 Difference]: Start difference. First operand 3647 states and 5139 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:53:08,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:53:08,324 INFO L93 Difference]: Finished difference Result 3761 states and 5272 transitions. [2022-03-18 05:53:08,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:53:08,324 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 [2022-03-18 05:53:08,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:53:08,331 INFO L225 Difference]: With dead ends: 3761 [2022-03-18 05:53:08,331 INFO L226 Difference]: Without dead ends: 3658 [2022-03-18 05:53:08,332 INFO L911 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 [2022-03-18 05:53:08,332 INFO L912 BasicCegarLoop]: 2511 mSDtfsCounter, 21 mSDsluCounter, 10003 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-03-18 05:53:08,333 INFO L913 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] [2022-03-18 05:53:08,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3658 states. [2022-03-18 05:53:09,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3658 to 3652. [2022-03-18 05:53:09,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3652 states, 2448 states have (on average 1.335375816993464) internal successors, (3269), 2516 states have internal predecessors, (3269), 934 states have call successors, (934), 261 states have call predecessors, (934), 269 states have return successors, (941), 916 states have call predecessors, (941), 927 states have call successors, (941) [2022-03-18 05:53:09,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 5144 transitions. [2022-03-18 05:53:09,446 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 5144 transitions. Word has length 85 [2022-03-18 05:53:09,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:53:09,447 INFO L478 AbstractCegarLoop]: Abstraction has 3652 states and 5144 transitions. [2022-03-18 05:53:09,447 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) [2022-03-18 05:53:09,447 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 5144 transitions. [2022-03-18 05:53:09,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-18 05:53:09,449 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:53:09,449 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:53:09,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-03-18 05:53:09,649 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 [2022-03-18 05:53:09,649 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:53:09,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:53:09,650 INFO L85 PathProgramCache]: Analyzing trace with hash -762410768, now seen corresponding path program 1 times [2022-03-18 05:53:09,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:09,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [323172512] [2022-03-18 05:53:09,652 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:53:09,652 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:53:09,652 INFO L85 PathProgramCache]: Analyzing trace with hash -762410768, now seen corresponding path program 2 times [2022-03-18 05:53:09,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:53:09,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090825708] [2022-03-18 05:53:09,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:53:09,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:53:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:09,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:53:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:09,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:53:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:09,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:53:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:09,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:53:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:09,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:09,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:09,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:53:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:10,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 05:53:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:10,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 05:53:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:10,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:10,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-18 05:53:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:10,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:10,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:53:10,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:53:10,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090825708] [2022-03-18 05:53:10,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090825708] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:53:10,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944276672] [2022-03-18 05:53:10,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:53:10,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:53:10,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:53:10,046 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) [2022-03-18 05:53:10,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-18 05:53:11,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:53:11,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:53:11,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-18 05:53:11,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:53:11,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:53:11,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:53:11,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944276672] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:11,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:53:11,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-03-18 05:53:11,577 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:53:11,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [323172512] [2022-03-18 05:53:11,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [323172512] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:11,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:53:11,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 05:53:11,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015800083] [2022-03-18 05:53:11,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:53:11,577 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 05:53:11,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:11,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 05:53:11,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:53:11,578 INFO L87 Difference]: Start difference. First operand 3652 states and 5144 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:53:12,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:53:12,711 INFO L93 Difference]: Finished difference Result 3714 states and 5214 transitions. [2022-03-18 05:53:12,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 05:53:12,712 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 [2022-03-18 05:53:12,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:53:12,721 INFO L225 Difference]: With dead ends: 3714 [2022-03-18 05:53:12,721 INFO L226 Difference]: Without dead ends: 3657 [2022-03-18 05:53:12,722 INFO L911 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 [2022-03-18 05:53:12,723 INFO L912 BasicCegarLoop]: 2510 mSDtfsCounter, 37 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 4969 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 05:53:12,723 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 4969 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 05:53:12,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3657 states. [2022-03-18 05:53:13,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3657 to 3657. [2022-03-18 05:53:13,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3657 states, 2451 states have (on average 1.3349653202774379) internal successors, (3272), 2519 states have internal predecessors, (3272), 936 states have call successors, (936), 261 states have call predecessors, (936), 269 states have return successors, (943), 918 states have call predecessors, (943), 929 states have call successors, (943) [2022-03-18 05:53:13,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3657 states to 3657 states and 5151 transitions. [2022-03-18 05:53:13,881 INFO L78 Accepts]: Start accepts. Automaton has 3657 states and 5151 transitions. Word has length 88 [2022-03-18 05:53:13,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:53:13,881 INFO L478 AbstractCegarLoop]: Abstraction has 3657 states and 5151 transitions. [2022-03-18 05:53:13,881 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) [2022-03-18 05:53:13,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3657 states and 5151 transitions. [2022-03-18 05:53:13,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-18 05:53:13,883 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:53:13,883 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:53:13,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-03-18 05:53:14,084 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 [2022-03-18 05:53:14,084 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:53:14,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:53:14,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1359885864, now seen corresponding path program 1 times [2022-03-18 05:53:14,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:14,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1406164708] [2022-03-18 05:53:14,086 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:53:14,087 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:53:14,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1359885864, now seen corresponding path program 2 times [2022-03-18 05:53:14,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:53:14,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175310905] [2022-03-18 05:53:14,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:53:14,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:53:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:14,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:53:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:14,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:53:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:14,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:53:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:14,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 05:53:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:14,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:53:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:14,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:14,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:53:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:14,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 05:53:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:14,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:14,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:53:14,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:53:14,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175310905] [2022-03-18 05:53:14,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175310905] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:53:14,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225673931] [2022-03-18 05:53:14,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:53:14,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:53:14,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:53:14,490 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) [2022-03-18 05:53:14,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-18 05:53:15,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:53:15,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:53:15,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-18 05:53:15,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:53:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:53:16,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:53:16,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225673931] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:16,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:53:16,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-03-18 05:53:16,058 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:53:16,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1406164708] [2022-03-18 05:53:16,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1406164708] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:16,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:53:16,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 05:53:16,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102200049] [2022-03-18 05:53:16,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:53:16,059 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 05:53:16,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:16,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 05:53:16,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:53:16,059 INFO L87 Difference]: Start difference. First operand 3657 states and 5151 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-03-18 05:53:17,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:53:17,229 INFO L93 Difference]: Finished difference Result 3712 states and 5214 transitions. [2022-03-18 05:53:17,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 05:53:17,229 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 [2022-03-18 05:53:17,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:53:17,238 INFO L225 Difference]: With dead ends: 3712 [2022-03-18 05:53:17,238 INFO L226 Difference]: Without dead ends: 3659 [2022-03-18 05:53:17,239 INFO L911 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 [2022-03-18 05:53:17,240 INFO L912 BasicCegarLoop]: 2564 mSDtfsCounter, 61 mSDsluCounter, 2490 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 5054 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 05:53:17,240 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 5054 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 05:53:17,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2022-03-18 05:53:18,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 3656. [2022-03-18 05:53:18,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3656 states, 2450 states have (on average 1.333469387755102) internal successors, (3267), 2518 states have internal predecessors, (3267), 936 states have call successors, (936), 261 states have call predecessors, (936), 269 states have return successors, (943), 918 states have call predecessors, (943), 929 states have call successors, (943) [2022-03-18 05:53:18,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 5146 transitions. [2022-03-18 05:53:18,405 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 5146 transitions. Word has length 88 [2022-03-18 05:53:18,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:53:18,405 INFO L478 AbstractCegarLoop]: Abstraction has 3656 states and 5146 transitions. [2022-03-18 05:53:18,406 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) [2022-03-18 05:53:18,406 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 5146 transitions. [2022-03-18 05:53:18,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-18 05:53:18,407 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:53:18,407 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:53:18,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-03-18 05:53:18,608 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 [2022-03-18 05:53:18,608 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:53:18,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:53:18,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1395598084, now seen corresponding path program 1 times [2022-03-18 05:53:18,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:18,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1017893072] [2022-03-18 05:53:18,611 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:53:18,611 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:53:18,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1395598084, now seen corresponding path program 2 times [2022-03-18 05:53:18,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:53:18,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44100486] [2022-03-18 05:53:18,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:53:18,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:53:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:18,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:53:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:18,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:53:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:18,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:53:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:18,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:53:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:18,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:18,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:18,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 05:53:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:18,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 05:53:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:18,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 05:53:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:18,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:18,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-18 05:53:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:18,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:18,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:53:18,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:53:18,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44100486] [2022-03-18 05:53:18,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44100486] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:53:18,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941180744] [2022-03-18 05:53:18,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:53:18,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:53:18,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:53:18,970 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) [2022-03-18 05:53:18,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-18 05:53:20,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:53:20,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:53:20,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 1752 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 05:53:20,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:53:20,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:53:20,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:53:20,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941180744] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:20,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:53:20,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-18 05:53:20,574 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:53:20,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1017893072] [2022-03-18 05:53:20,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1017893072] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:20,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:53:20,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:53:20,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295823055] [2022-03-18 05:53:20,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:53:20,575 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:53:20,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:20,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:53:20,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:53:20,576 INFO L87 Difference]: Start difference. First operand 3656 states and 5146 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-03-18 05:53:21,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:53:21,933 INFO L93 Difference]: Finished difference Result 3869 states and 5402 transitions. [2022-03-18 05:53:21,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:53:21,934 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 [2022-03-18 05:53:21,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:53:21,941 INFO L225 Difference]: With dead ends: 3869 [2022-03-18 05:53:21,941 INFO L226 Difference]: Without dead ends: 3644 [2022-03-18 05:53:21,942 INFO L911 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 [2022-03-18 05:53:21,942 INFO L912 BasicCegarLoop]: 2510 mSDtfsCounter, 5 mSDsluCounter, 10020 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 12530 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 [2022-03-18 05:53:21,942 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 12530 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 05:53:21,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2022-03-18 05:53:23,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 3644. [2022-03-18 05:53:23,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 2443 states have (on average 1.3336062218583709) internal successors, (3258), 2511 states have internal predecessors, (3258), 932 states have call successors, (932), 261 states have call predecessors, (932), 268 states have return successors, (938), 913 states have call predecessors, (938), 925 states have call successors, (938) [2022-03-18 05:53:23,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 5128 transitions. [2022-03-18 05:53:23,046 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 5128 transitions. Word has length 89 [2022-03-18 05:53:23,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:53:23,046 INFO L478 AbstractCegarLoop]: Abstraction has 3644 states and 5128 transitions. [2022-03-18 05:53:23,047 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) [2022-03-18 05:53:23,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 5128 transitions. [2022-03-18 05:53:23,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-03-18 05:53:23,048 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:53:23,048 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:53:23,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-03-18 05:53:23,249 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 [2022-03-18 05:53:23,249 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:53:23,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:53:23,250 INFO L85 PathProgramCache]: Analyzing trace with hash -2048182127, now seen corresponding path program 1 times [2022-03-18 05:53:23,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:23,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [542498275] [2022-03-18 05:53:23,252 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:53:23,252 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:53:23,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2048182127, now seen corresponding path program 2 times [2022-03-18 05:53:23,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:53:23,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043577369] [2022-03-18 05:53:23,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:53:23,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:53:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:23,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:53:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:23,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:53:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:23,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:53:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:23,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 05:53:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:23,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:53:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:23,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:23,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 05:53:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:23,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:53:23,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:53:23,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043577369] [2022-03-18 05:53:23,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043577369] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:53:23,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243611860] [2022-03-18 05:53:23,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:53:23,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:53:23,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:53:23,621 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) [2022-03-18 05:53:23,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-18 05:53:25,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:53:25,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:53:25,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 05:53:25,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:53:25,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:53:25,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:53:25,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243611860] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:25,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:53:25,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-18 05:53:25,311 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:53:25,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [542498275] [2022-03-18 05:53:25,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [542498275] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:25,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:53:25,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:53:25,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086531332] [2022-03-18 05:53:25,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:53:25,312 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:53:25,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:25,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:53:25,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:53:25,312 INFO L87 Difference]: Start difference. First operand 3644 states and 5128 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:53:26,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:53:26,512 INFO L93 Difference]: Finished difference Result 3703 states and 5199 transitions. [2022-03-18 05:53:26,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:53:26,512 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 [2022-03-18 05:53:26,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:53:26,525 INFO L225 Difference]: With dead ends: 3703 [2022-03-18 05:53:26,525 INFO L226 Difference]: Without dead ends: 3656 [2022-03-18 05:53:26,527 INFO L911 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 [2022-03-18 05:53:26,528 INFO L912 BasicCegarLoop]: 2502 mSDtfsCounter, 16 mSDsluCounter, 9966 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-03-18 05:53:26,528 INFO L913 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] [2022-03-18 05:53:26,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3656 states. [2022-03-18 05:53:27,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3656 to 3645. [2022-03-18 05:53:27,696 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) [2022-03-18 05:53:27,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 5130 transitions. [2022-03-18 05:53:27,705 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 5130 transitions. Word has length 87 [2022-03-18 05:53:27,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:53:27,705 INFO L478 AbstractCegarLoop]: Abstraction has 3645 states and 5130 transitions. [2022-03-18 05:53:27,705 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) [2022-03-18 05:53:27,705 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 5130 transitions. [2022-03-18 05:53:27,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-18 05:53:27,707 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:53:27,707 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:53:27,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-18 05:53:27,908 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 [2022-03-18 05:53:27,908 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:53:27,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:53:27,908 INFO L85 PathProgramCache]: Analyzing trace with hash -554188091, now seen corresponding path program 1 times [2022-03-18 05:53:27,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:27,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1412018816] [2022-03-18 05:53:27,910 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:53:27,911 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:53:27,911 INFO L85 PathProgramCache]: Analyzing trace with hash -554188091, now seen corresponding path program 2 times [2022-03-18 05:53:27,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:53:27,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314389102] [2022-03-18 05:53:27,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:53:27,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:53:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:28,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:53:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:28,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:53:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:28,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:53:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:28,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:53:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:28,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:28,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:28,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:53:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:28,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 05:53:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:28,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 05:53:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:28,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-18 05:53:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:28,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:28,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:53:28,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:53:28,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314389102] [2022-03-18 05:53:28,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314389102] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:53:28,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552024278] [2022-03-18 05:53:28,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:53:28,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:53:28,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:53:28,301 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) [2022-03-18 05:53:28,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-18 05:53:29,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:53:29,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:53:29,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-18 05:53:29,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:53:30,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:53:30,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:53:30,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552024278] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:30,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:53:30,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-03-18 05:53:30,207 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:53:30,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1412018816] [2022-03-18 05:53:30,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1412018816] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:30,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:53:30,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 05:53:30,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077983097] [2022-03-18 05:53:30,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:53:30,207 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 05:53:30,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:30,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 05:53:30,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:53:30,208 INFO L87 Difference]: Start difference. First operand 3645 states and 5130 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-03-18 05:53:34,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:53:34,586 INFO L93 Difference]: Finished difference Result 4881 states and 6940 transitions. [2022-03-18 05:53:34,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 05:53:34,586 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 [2022-03-18 05:53:34,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:53:34,596 INFO L225 Difference]: With dead ends: 4881 [2022-03-18 05:53:34,596 INFO L226 Difference]: Without dead ends: 4875 [2022-03-18 05:53:34,597 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:53:34,598 INFO L912 BasicCegarLoop]: 4271 mSDtfsCounter, 5470 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 1074 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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, 2.4s IncrementalHoareTripleChecker+Time [2022-03-18 05:53:34,598 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [5474 Valid, 5849 Invalid, 2030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1074 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-03-18 05:53:34,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4875 states. [2022-03-18 05:53:35,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4875 to 3645. [2022-03-18 05:53:35,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3645 states, 2444 states have (on average 1.3334697217675942) internal successors, (3259), 2512 states have internal predecessors, (3259), 932 states have call successors, (932), 261 states have call predecessors, (932), 268 states have return successors, (938), 913 states have call predecessors, (938), 925 states have call successors, (938) [2022-03-18 05:53:35,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 5129 transitions. [2022-03-18 05:53:35,774 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 5129 transitions. Word has length 89 [2022-03-18 05:53:35,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:53:35,775 INFO L478 AbstractCegarLoop]: Abstraction has 3645 states and 5129 transitions. [2022-03-18 05:53:35,775 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) [2022-03-18 05:53:35,775 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 5129 transitions. [2022-03-18 05:53:35,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-18 05:53:35,776 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:53:35,777 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:53:35,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-18 05:53:35,977 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 [2022-03-18 05:53:35,977 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:53:35,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:53:35,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1738187805, now seen corresponding path program 1 times [2022-03-18 05:53:35,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:35,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1113409440] [2022-03-18 05:53:35,980 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:53:35,980 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:53:35,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1738187805, now seen corresponding path program 2 times [2022-03-18 05:53:35,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:53:35,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257807015] [2022-03-18 05:53:35,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:53:35,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:53:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:36,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:53:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:36,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:53:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:36,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:53:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:36,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 05:53:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:36,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:53:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:36,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:36,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 05:53:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:36,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:53:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:36,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:53:36,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:53:36,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257807015] [2022-03-18 05:53:36,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257807015] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:53:36,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055358353] [2022-03-18 05:53:36,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:53:36,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:53:36,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:53:36,391 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) [2022-03-18 05:53:36,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-18 05:53:37,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:53:37,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:53:37,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 1794 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-18 05:53:37,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:53:38,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:53:38,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:53:38,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055358353] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:38,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:53:38,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-03-18 05:53:38,125 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:53:38,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1113409440] [2022-03-18 05:53:38,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1113409440] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:38,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:53:38,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 05:53:38,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448826162] [2022-03-18 05:53:38,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:53:38,126 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 05:53:38,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:38,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 05:53:38,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:53:38,126 INFO L87 Difference]: Start difference. First operand 3645 states and 5129 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-18 05:53:39,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:53:39,301 INFO L93 Difference]: Finished difference Result 5056 states and 7140 transitions. [2022-03-18 05:53:39,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 05:53:39,301 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 [2022-03-18 05:53:39,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:53:39,312 INFO L225 Difference]: With dead ends: 5056 [2022-03-18 05:53:39,312 INFO L226 Difference]: Without dead ends: 3608 [2022-03-18 05:53:39,317 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:53:39,317 INFO L912 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 [2022-03-18 05:53:39,317 INFO L913 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] [2022-03-18 05:53:39,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3608 states. [2022-03-18 05:53:40,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3608 to 3608. [2022-03-18 05:53:40,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3608 states, 2424 states have (on average 1.3329207920792079) internal successors, (3231), 2492 states have internal predecessors, (3231), 918 states have call successors, (918), 258 states have call predecessors, (918), 265 states have return successors, (924), 899 states have call predecessors, (924), 911 states have call successors, (924) [2022-03-18 05:53:40,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3608 states to 3608 states and 5073 transitions. [2022-03-18 05:53:40,531 INFO L78 Accepts]: Start accepts. Automaton has 3608 states and 5073 transitions. Word has length 89 [2022-03-18 05:53:40,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:53:40,531 INFO L478 AbstractCegarLoop]: Abstraction has 3608 states and 5073 transitions. [2022-03-18 05:53:40,531 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) [2022-03-18 05:53:40,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3608 states and 5073 transitions. [2022-03-18 05:53:40,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-03-18 05:53:40,533 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:53:40,533 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:53:40,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-03-18 05:53:40,733 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 [2022-03-18 05:53:40,734 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:53:40,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:53:40,734 INFO L85 PathProgramCache]: Analyzing trace with hash -899188565, now seen corresponding path program 1 times [2022-03-18 05:53:40,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:40,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1155701208] [2022-03-18 05:53:40,736 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:53:40,736 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:53:40,736 INFO L85 PathProgramCache]: Analyzing trace with hash -899188565, now seen corresponding path program 2 times [2022-03-18 05:53:40,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:53:40,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846886869] [2022-03-18 05:53:40,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:53:40,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:53:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:40,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:53:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:40,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:53:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:41,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:53:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:41,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:53:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:41,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:41,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:41,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:53:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:41,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 05:53:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:41,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 05:53:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:41,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-18 05:53:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:41,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:41,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:53:41,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:53:41,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846886869] [2022-03-18 05:53:41,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846886869] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:53:41,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445650395] [2022-03-18 05:53:41,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:53:41,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:53:41,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:53:41,141 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) [2022-03-18 05:53:41,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-18 05:53:42,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:53:42,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:53:42,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 1779 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-18 05:53:42,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:53:42,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:53:42,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:53:42,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445650395] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:42,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:53:42,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2022-03-18 05:53:42,901 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:53:42,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1155701208] [2022-03-18 05:53:42,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1155701208] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:42,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:53:42,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:53:42,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358254074] [2022-03-18 05:53:42,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:53:42,902 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:53:42,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:42,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:53:42,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-03-18 05:53:42,902 INFO L87 Difference]: Start difference. First operand 3608 states and 5073 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-18 05:53:44,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:53:44,393 INFO L93 Difference]: Finished difference Result 3700 states and 5179 transitions. [2022-03-18 05:53:44,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 05:53:44,394 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 [2022-03-18 05:53:44,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:53:44,402 INFO L225 Difference]: With dead ends: 3700 [2022-03-18 05:53:44,403 INFO L226 Difference]: Without dead ends: 3640 [2022-03-18 05:53:44,404 INFO L911 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 [2022-03-18 05:53:44,404 INFO L912 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 [2022-03-18 05:53:44,404 INFO L913 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] [2022-03-18 05:53:44,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2022-03-18 05:53:45,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3629. [2022-03-18 05:53:45,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3629 states, 2441 states have (on average 1.331421548545678) internal successors, (3250), 2510 states have internal predecessors, (3250), 920 states have call successors, (920), 258 states have call predecessors, (920), 267 states have return successors, (928), 903 states have call predecessors, (928), 913 states have call successors, (928) [2022-03-18 05:53:45,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3629 states to 3629 states and 5098 transitions. [2022-03-18 05:53:45,623 INFO L78 Accepts]: Start accepts. Automaton has 3629 states and 5098 transitions. Word has length 90 [2022-03-18 05:53:45,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:53:45,623 INFO L478 AbstractCegarLoop]: Abstraction has 3629 states and 5098 transitions. [2022-03-18 05:53:45,623 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) [2022-03-18 05:53:45,624 INFO L276 IsEmpty]: Start isEmpty. Operand 3629 states and 5098 transitions. [2022-03-18 05:53:45,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-03-18 05:53:45,625 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:53:45,625 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:53:45,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-18 05:53:45,826 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 [2022-03-18 05:53:45,826 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:53:45,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:53:45,826 INFO L85 PathProgramCache]: Analyzing trace with hash -898911735, now seen corresponding path program 1 times [2022-03-18 05:53:45,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:45,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [953939521] [2022-03-18 05:53:45,828 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:53:45,828 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:53:45,828 INFO L85 PathProgramCache]: Analyzing trace with hash -898911735, now seen corresponding path program 2 times [2022-03-18 05:53:45,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:53:45,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72439595] [2022-03-18 05:53:45,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:53:45,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:53:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:46,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:53:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:46,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:53:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:46,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:53:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:46,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:53:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:46,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:46,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:46,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:53:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:46,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 05:53:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:46,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 05:53:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:46,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-18 05:53:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:46,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:46,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:53:46,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:53:46,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72439595] [2022-03-18 05:53:46,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72439595] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:53:46,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749524468] [2022-03-18 05:53:46,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:53:46,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:53:46,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:53:46,221 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) [2022-03-18 05:53:46,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-18 05:53:47,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:53:47,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:53:47,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-18 05:53:47,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:53:48,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:53:48,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:53:48,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749524468] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:48,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:53:48,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-03-18 05:53:48,092 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:53:48,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [953939521] [2022-03-18 05:53:48,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [953939521] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:48,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:53:48,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:53:48,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418740094] [2022-03-18 05:53:48,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:53:48,093 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:53:48,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:48,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:53:48,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:53:48,093 INFO L87 Difference]: Start difference. First operand 3629 states and 5098 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 9 states have internal predecessors, (66), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-03-18 05:53:50,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:53:50,787 INFO L93 Difference]: Finished difference Result 3795 states and 5286 transitions. [2022-03-18 05:53:50,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 05:53:50,788 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 9 states have internal predecessors, (66), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 90 [2022-03-18 05:53:50,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:53:50,797 INFO L225 Difference]: With dead ends: 3795 [2022-03-18 05:53:50,797 INFO L226 Difference]: Without dead ends: 3770 [2022-03-18 05:53:50,799 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2022-03-18 05:53:50,799 INFO L912 BasicCegarLoop]: 2580 mSDtfsCounter, 1137 mSDsluCounter, 14769 mSDsCounter, 0 mSdLazyCounter, 2414 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 17349 SdHoareTripleChecker+Invalid, 2440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:53:50,799 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1144 Valid, 17349 Invalid, 2440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2414 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-18 05:53:50,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3770 states. [2022-03-18 05:53:52,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3770 to 3669. [2022-03-18 05:53:52,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3669 states, 2469 states have (on average 1.3296881328473067) internal successors, (3283), 2540 states have internal predecessors, (3283), 925 states have call successors, (925), 263 states have call predecessors, (925), 274 states have return successors, (935), 909 states have call predecessors, (935), 918 states have call successors, (935) [2022-03-18 05:53:52,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3669 states to 3669 states and 5143 transitions. [2022-03-18 05:53:52,046 INFO L78 Accepts]: Start accepts. Automaton has 3669 states and 5143 transitions. Word has length 90 [2022-03-18 05:53:52,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:53:52,046 INFO L478 AbstractCegarLoop]: Abstraction has 3669 states and 5143 transitions. [2022-03-18 05:53:52,046 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 9 states have internal predecessors, (66), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-03-18 05:53:52,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3669 states and 5143 transitions. [2022-03-18 05:53:52,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-18 05:53:52,048 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:53:52,049 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:53:52,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-18 05:53:52,249 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 [2022-03-18 05:53:52,249 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:53:52,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:53:52,250 INFO L85 PathProgramCache]: Analyzing trace with hash 695765407, now seen corresponding path program 1 times [2022-03-18 05:53:52,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:52,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [836696371] [2022-03-18 05:53:52,253 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:53:52,253 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:53:52,253 INFO L85 PathProgramCache]: Analyzing trace with hash 695765407, now seen corresponding path program 2 times [2022-03-18 05:53:52,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:53:52,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920552452] [2022-03-18 05:53:52,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:53:52,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:53:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:52,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:53:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:52,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:53:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:52,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:53:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:52,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 05:53:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:52,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:53:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:52,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:52,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-18 05:53:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:53:52,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:53:52,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920552452] [2022-03-18 05:53:52,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920552452] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:53:52,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458817778] [2022-03-18 05:53:52,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:53:52,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:53:52,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:53:52,631 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) [2022-03-18 05:53:52,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-18 05:53:54,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:53:54,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:53:54,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 05:53:54,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:53:54,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:53:54,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:53:54,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458817778] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:54,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:53:54,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-18 05:53:54,344 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:53:54,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [836696371] [2022-03-18 05:53:54,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [836696371] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:54,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:53:54,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:53:54,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235877011] [2022-03-18 05:53:54,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:53:54,345 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:53:54,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:54,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:53:54,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:53:54,345 INFO L87 Difference]: Start difference. First operand 3669 states and 5143 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:53:55,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:53:55,669 INFO L93 Difference]: Finished difference Result 3732 states and 5217 transitions. [2022-03-18 05:53:55,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:53:55,669 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 [2022-03-18 05:53:55,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:53:55,678 INFO L225 Difference]: With dead ends: 3732 [2022-03-18 05:53:55,678 INFO L226 Difference]: Without dead ends: 3685 [2022-03-18 05:53:55,679 INFO L911 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 [2022-03-18 05:53:55,679 INFO L912 BasicCegarLoop]: 2476 mSDtfsCounter, 5 mSDsluCounter, 9882 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 12358 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 [2022-03-18 05:53:55,679 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 12358 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 05:53:55,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3685 states. [2022-03-18 05:53:56,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3685 to 3673. [2022-03-18 05:53:56,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3673 states, 2472 states have (on average 1.3292880258899675) internal successors, (3286), 2543 states have internal predecessors, (3286), 925 states have call successors, (925), 263 states have call predecessors, (925), 275 states have return successors, (936), 910 states have call predecessors, (936), 918 states have call successors, (936) [2022-03-18 05:53:56,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3673 states to 3673 states and 5147 transitions. [2022-03-18 05:53:56,925 INFO L78 Accepts]: Start accepts. Automaton has 3673 states and 5147 transitions. Word has length 89 [2022-03-18 05:53:56,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:53:56,926 INFO L478 AbstractCegarLoop]: Abstraction has 3673 states and 5147 transitions. [2022-03-18 05:53:56,926 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) [2022-03-18 05:53:56,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3673 states and 5147 transitions. [2022-03-18 05:53:56,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-18 05:53:56,928 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:53:56,928 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:53:56,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-03-18 05:53:57,128 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 [2022-03-18 05:53:57,128 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:53:57,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:53:57,129 INFO L85 PathProgramCache]: Analyzing trace with hash -2023692261, now seen corresponding path program 1 times [2022-03-18 05:53:57,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:57,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1393375100] [2022-03-18 05:53:57,132 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:53:57,132 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:53:57,132 INFO L85 PathProgramCache]: Analyzing trace with hash -2023692261, now seen corresponding path program 2 times [2022-03-18 05:53:57,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:53:57,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294647322] [2022-03-18 05:53:57,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:53:57,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:53:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:57,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:53:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:57,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:53:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:57,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:53:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:57,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:53:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:57,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 05:53:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:57,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:57,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-18 05:53:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:57,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-18 05:53:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:57,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-18 05:53:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:57,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:53:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:57,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:53:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:53:57,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:53:57,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:53:57,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294647322] [2022-03-18 05:53:57,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294647322] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:53:57,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47424212] [2022-03-18 05:53:57,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:53:57,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:53:57,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:53:57,509 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) [2022-03-18 05:53:57,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-18 05:53:59,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:53:59,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:53:59,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 2295 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-18 05:53:59,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:53:59,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:53:59,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:53:59,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47424212] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:59,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:53:59,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-03-18 05:53:59,226 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:53:59,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1393375100] [2022-03-18 05:53:59,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1393375100] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:53:59,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:53:59,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 05:53:59,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301260662] [2022-03-18 05:53:59,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:53:59,227 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 05:53:59,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:53:59,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 05:53:59,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:53:59,228 INFO L87 Difference]: Start difference. First operand 3673 states and 5147 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-03-18 05:54:00,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:54:00,937 INFO L93 Difference]: Finished difference Result 4869 states and 6906 transitions. [2022-03-18 05:54:00,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 05:54:00,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 97 [2022-03-18 05:54:00,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:54:00,950 INFO L225 Difference]: With dead ends: 4869 [2022-03-18 05:54:00,950 INFO L226 Difference]: Without dead ends: 4866 [2022-03-18 05:54:00,953 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:54:00,953 INFO L912 BasicCegarLoop]: 3902 mSDtfsCounter, 1766 mSDsluCounter, 2425 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 6327 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:54:00,953 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1766 Valid, 6327 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 05:54:00,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4866 states. [2022-03-18 05:54:02,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4866 to 3677. [2022-03-18 05:54:02,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3677 states, 2476 states have (on average 1.3295638126009692) internal successors, (3292), 2547 states have internal predecessors, (3292), 925 states have call successors, (925), 263 states have call predecessors, (925), 275 states have return successors, (936), 910 states have call predecessors, (936), 918 states have call successors, (936) [2022-03-18 05:54:02,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 5153 transitions. [2022-03-18 05:54:02,350 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 5153 transitions. Word has length 97 [2022-03-18 05:54:02,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:54:02,350 INFO L478 AbstractCegarLoop]: Abstraction has 3677 states and 5153 transitions. [2022-03-18 05:54:02,350 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-03-18 05:54:02,351 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 5153 transitions. [2022-03-18 05:54:02,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-03-18 05:54:02,352 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:54:02,353 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:54:02,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-03-18 05:54:02,553 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 [2022-03-18 05:54:02,553 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:54:02,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:54:02,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1404535558, now seen corresponding path program 1 times [2022-03-18 05:54:02,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:02,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1507693932] [2022-03-18 05:54:02,555 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:54:02,556 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:54:02,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1404535558, now seen corresponding path program 2 times [2022-03-18 05:54:02,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:54:02,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153038388] [2022-03-18 05:54:02,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:54:02,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:54:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:02,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:54:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:02,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:54:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:02,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:54:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:02,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:54:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:02,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:54:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:02,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:54:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:02,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:54:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:02,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 05:54:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:02,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 05:54:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:02,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-18 05:54:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:02,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:54:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:02,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:54:02,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:54:02,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153038388] [2022-03-18 05:54:02,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153038388] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:54:02,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208384368] [2022-03-18 05:54:02,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:54:02,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:54:02,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:54:02,946 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) [2022-03-18 05:54:02,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-18 05:54:04,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:54:04,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:54:04,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 05:54:04,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:54:04,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:54:04,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:54:04,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208384368] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:04,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:54:04,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-03-18 05:54:04,794 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:54:04,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1507693932] [2022-03-18 05:54:04,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1507693932] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:04,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:54:04,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 05:54:04,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338342477] [2022-03-18 05:54:04,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:54:04,795 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 05:54:04,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:04,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 05:54:04,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:54:04,795 INFO L87 Difference]: Start difference. First operand 3677 states and 5153 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-18 05:54:06,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:54:06,269 INFO L93 Difference]: Finished difference Result 6455 states and 9153 transitions. [2022-03-18 05:54:06,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 05:54:06,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 91 [2022-03-18 05:54:06,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:54:06,280 INFO L225 Difference]: With dead ends: 6455 [2022-03-18 05:54:06,280 INFO L226 Difference]: Without dead ends: 3686 [2022-03-18 05:54:06,289 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:54:06,289 INFO L912 BasicCegarLoop]: 2468 mSDtfsCounter, 3 mSDsluCounter, 4931 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7399 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:54:06,289 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 7399 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 05:54:06,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2022-03-18 05:54:07,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 3686. [2022-03-18 05:54:07,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3686 states, 2483 states have (on average 1.3294401933145388) internal successors, (3301), 2556 states have internal predecessors, (3301), 925 states have call successors, (925), 263 states have call predecessors, (925), 277 states have return successors, (938), 910 states have call predecessors, (938), 918 states have call successors, (938) [2022-03-18 05:54:07,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 5164 transitions. [2022-03-18 05:54:07,677 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 5164 transitions. Word has length 91 [2022-03-18 05:54:07,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:54:07,678 INFO L478 AbstractCegarLoop]: Abstraction has 3686 states and 5164 transitions. [2022-03-18 05:54:07,678 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-18 05:54:07,678 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 5164 transitions. [2022-03-18 05:54:07,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-03-18 05:54:07,680 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:54:07,680 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:54:07,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-03-18 05:54:07,880 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 [2022-03-18 05:54:07,880 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:54:07,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:54:07,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1270672595, now seen corresponding path program 1 times [2022-03-18 05:54:07,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:07,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1504494843] [2022-03-18 05:54:07,883 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:54:07,883 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:54:07,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1270672595, now seen corresponding path program 2 times [2022-03-18 05:54:07,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:54:07,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922291982] [2022-03-18 05:54:07,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:54:07,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:54:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:08,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:54:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:08,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:54:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:08,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:54:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:08,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 05:54:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:08,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:54:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:08,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:54:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:08,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-18 05:54:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:08,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:54:08,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:54:08,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922291982] [2022-03-18 05:54:08,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922291982] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:54:08,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252161201] [2022-03-18 05:54:08,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:54:08,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:54:08,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:54:08,284 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) [2022-03-18 05:54:08,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-18 05:54:09,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:54:09,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:54:09,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-18 05:54:09,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:54:10,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:54:10,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:54:10,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252161201] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:10,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:54:10,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-03-18 05:54:10,025 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:54:10,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1504494843] [2022-03-18 05:54:10,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1504494843] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:10,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:54:10,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 05:54:10,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961429198] [2022-03-18 05:54:10,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:54:10,026 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 05:54:10,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:10,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 05:54:10,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-18 05:54:10,026 INFO L87 Difference]: Start difference. First operand 3686 states and 5164 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:54:11,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:54:11,414 INFO L93 Difference]: Finished difference Result 3734 states and 5221 transitions. [2022-03-18 05:54:11,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 05:54:11,415 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 [2022-03-18 05:54:11,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:54:11,424 INFO L225 Difference]: With dead ends: 3734 [2022-03-18 05:54:11,424 INFO L226 Difference]: Without dead ends: 3687 [2022-03-18 05:54:11,425 INFO L911 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 [2022-03-18 05:54:11,426 INFO L912 BasicCegarLoop]: 2474 mSDtfsCounter, 2 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4932 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:54:11,426 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 4932 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 05:54:11,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2022-03-18 05:54:12,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 3686. [2022-03-18 05:54:12,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3686 states, 2483 states have (on average 1.3294401933145388) internal successors, (3301), 2556 states have internal predecessors, (3301), 925 states have call successors, (925), 263 states have call predecessors, (925), 277 states have return successors, (938), 910 states have call predecessors, (938), 918 states have call successors, (938) [2022-03-18 05:54:12,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 5164 transitions. [2022-03-18 05:54:12,834 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 5164 transitions. Word has length 90 [2022-03-18 05:54:12,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:54:12,834 INFO L478 AbstractCegarLoop]: Abstraction has 3686 states and 5164 transitions. [2022-03-18 05:54:12,834 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) [2022-03-18 05:54:12,834 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 5164 transitions. [2022-03-18 05:54:12,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-03-18 05:54:12,836 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:54:12,836 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:54:12,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-03-18 05:54:13,037 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 [2022-03-18 05:54:13,037 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:54:13,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:54:13,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1371854706, now seen corresponding path program 1 times [2022-03-18 05:54:13,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:13,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1265239717] [2022-03-18 05:54:13,039 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:54:13,039 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:54:13,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1371854706, now seen corresponding path program 2 times [2022-03-18 05:54:13,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:54:13,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794192803] [2022-03-18 05:54:13,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:54:13,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:54:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:13,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:54:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:13,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:54:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:13,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:54:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:13,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:54:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:13,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:54:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:13,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:54:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:13,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:54:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:13,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 05:54:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:13,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 05:54:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:13,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 05:54:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:13,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:54:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:54:13,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:54:13,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794192803] [2022-03-18 05:54:13,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794192803] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:54:13,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848271415] [2022-03-18 05:54:13,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:54:13,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:54:13,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:54:13,458 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) [2022-03-18 05:54:13,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-18 05:54:15,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:54:15,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:54:15,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 05:54:15,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:54:15,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-18 05:54:15,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:54:15,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848271415] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:15,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:54:15,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-03-18 05:54:15,487 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:54:15,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1265239717] [2022-03-18 05:54:15,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1265239717] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:15,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:54:15,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 05:54:15,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162757700] [2022-03-18 05:54:15,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:54:15,487 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 05:54:15,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:15,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 05:54:15,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-03-18 05:54:15,488 INFO L87 Difference]: Start difference. First operand 3686 states and 5164 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-18 05:54:16,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:54:16,911 INFO L93 Difference]: Finished difference Result 6466 states and 9155 transitions. [2022-03-18 05:54:16,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 05:54:16,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2022-03-18 05:54:16,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:54:16,923 INFO L225 Difference]: With dead ends: 6466 [2022-03-18 05:54:16,923 INFO L226 Difference]: Without dead ends: 3693 [2022-03-18 05:54:16,931 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:54:16,931 INFO L912 BasicCegarLoop]: 2469 mSDtfsCounter, 2 mSDsluCounter, 4931 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7400 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 05:54:16,931 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 7400 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 05:54:16,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3693 states. [2022-03-18 05:54:18,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3693 to 3689. [2022-03-18 05:54:18,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3689 states, 2486 states have (on average 1.329847144006436) internal successors, (3306), 2559 states have internal predecessors, (3306), 925 states have call successors, (925), 263 states have call predecessors, (925), 277 states have return successors, (938), 910 states have call predecessors, (938), 918 states have call successors, (938) [2022-03-18 05:54:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 5169 transitions. [2022-03-18 05:54:18,331 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 5169 transitions. Word has length 92 [2022-03-18 05:54:18,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:54:18,332 INFO L478 AbstractCegarLoop]: Abstraction has 3689 states and 5169 transitions. [2022-03-18 05:54:18,332 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-18 05:54:18,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 5169 transitions. [2022-03-18 05:54:18,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-18 05:54:18,334 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:54:18,334 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:54:18,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-03-18 05:54:18,534 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 [2022-03-18 05:54:18,534 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:54:18,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:54:18,535 INFO L85 PathProgramCache]: Analyzing trace with hash -42351996, now seen corresponding path program 1 times [2022-03-18 05:54:18,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:18,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [165371765] [2022-03-18 05:54:18,537 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:54:18,537 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:54:18,537 INFO L85 PathProgramCache]: Analyzing trace with hash -42351996, now seen corresponding path program 2 times [2022-03-18 05:54:18,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:54:18,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489211603] [2022-03-18 05:54:18,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:54:18,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:54:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:18,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:54:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:18,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:54:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:18,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:54:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:18,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:54:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:18,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:54:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:18,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:54:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:18,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:54:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:18,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 05:54:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:18,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 05:54:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:18,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-18 05:54:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:18,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:54:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:18,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-18 05:54:18,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:54:18,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489211603] [2022-03-18 05:54:18,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489211603] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:54:18,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974001565] [2022-03-18 05:54:18,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:54:18,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:54:18,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:54:18,946 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) [2022-03-18 05:54:18,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-18 05:54:21,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:54:21,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:54:21,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-18 05:54:21,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:54:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 05:54:21,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:54:21,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974001565] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:21,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:54:21,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-03-18 05:54:21,631 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:54:21,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [165371765] [2022-03-18 05:54:21,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [165371765] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:21,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:54:21,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:54:21,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325282392] [2022-03-18 05:54:21,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:54:21,632 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:54:21,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:21,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:54:21,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:54:21,632 INFO L87 Difference]: Start difference. First operand 3689 states and 5169 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-03-18 05:54:23,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:54:23,204 INFO L93 Difference]: Finished difference Result 3802 states and 5294 transitions. [2022-03-18 05:54:23,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:54:23,204 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 93 [2022-03-18 05:54:23,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:54:23,212 INFO L225 Difference]: With dead ends: 3802 [2022-03-18 05:54:23,212 INFO L226 Difference]: Without dead ends: 3777 [2022-03-18 05:54:23,213 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-18 05:54:23,213 INFO L912 BasicCegarLoop]: 2485 mSDtfsCounter, 79 mSDsluCounter, 12438 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 14923 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:54:23,214 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 14923 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 05:54:23,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3777 states. [2022-03-18 05:54:24,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3777 to 3629. [2022-03-18 05:54:24,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3629 states, 2442 states have (on average 1.3325143325143325) internal successors, (3254), 2512 states have internal predecessors, (3254), 918 states have call successors, (918), 258 states have call predecessors, (918), 268 states have return successors, (927), 900 states have call predecessors, (927), 911 states have call successors, (927) [2022-03-18 05:54:24,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3629 states to 3629 states and 5099 transitions. [2022-03-18 05:54:24,581 INFO L78 Accepts]: Start accepts. Automaton has 3629 states and 5099 transitions. Word has length 93 [2022-03-18 05:54:24,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:54:24,581 INFO L478 AbstractCegarLoop]: Abstraction has 3629 states and 5099 transitions. [2022-03-18 05:54:24,581 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-03-18 05:54:24,581 INFO L276 IsEmpty]: Start isEmpty. Operand 3629 states and 5099 transitions. [2022-03-18 05:54:24,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-18 05:54:24,584 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:54:24,584 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:54:24,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-03-18 05:54:24,788 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 [2022-03-18 05:54:24,789 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:54:24,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:54:24,789 INFO L85 PathProgramCache]: Analyzing trace with hash 681603302, now seen corresponding path program 1 times [2022-03-18 05:54:24,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:24,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1890674208] [2022-03-18 05:54:24,792 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:54:24,792 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:54:24,792 INFO L85 PathProgramCache]: Analyzing trace with hash 681603302, now seen corresponding path program 2 times [2022-03-18 05:54:24,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:54:24,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950637481] [2022-03-18 05:54:24,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:54:24,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:54:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:25,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:54:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:25,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:54:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:25,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:54:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:25,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:54:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:25,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:54:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:25,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:54:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:25,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:54:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:25,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 05:54:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:25,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 05:54:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:25,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-18 05:54:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:25,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:54:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:25,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-18 05:54:25,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:54:25,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950637481] [2022-03-18 05:54:25,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950637481] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:54:25,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075100936] [2022-03-18 05:54:25,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:54:25,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:54:25,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:54:25,272 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) [2022-03-18 05:54:25,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-18 05:54:27,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:54:27,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:54:27,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 1779 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-18 05:54:27,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:54:27,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 05:54:27,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:54:27,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075100936] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:27,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:54:27,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-03-18 05:54:27,390 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:54:27,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1890674208] [2022-03-18 05:54:27,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1890674208] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:27,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:54:27,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 05:54:27,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664183943] [2022-03-18 05:54:27,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:54:27,391 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 05:54:27,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:27,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 05:54:27,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:54:27,391 INFO L87 Difference]: Start difference. First operand 3629 states and 5099 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-03-18 05:54:31,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:54:31,918 INFO L93 Difference]: Finished difference Result 4853 states and 6892 transitions. [2022-03-18 05:54:31,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 05:54:31,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 93 [2022-03-18 05:54:31,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:54:31,932 INFO L225 Difference]: With dead ends: 4853 [2022-03-18 05:54:31,933 INFO L226 Difference]: Without dead ends: 4847 [2022-03-18 05:54:31,935 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-18 05:54:31,936 INFO L912 BasicCegarLoop]: 4216 mSDtfsCounter, 4284 mSDsluCounter, 3107 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4288 SdHoareTripleChecker+Valid, 7323 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:54:31,937 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [4288 Valid, 7323 Invalid, 2217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 1858 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-18 05:54:31,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4847 states. [2022-03-18 05:54:33,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4847 to 3627. [2022-03-18 05:54:33,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3627 states, 2440 states have (on average 1.3319672131147542) internal successors, (3250), 2510 states have internal predecessors, (3250), 918 states have call successors, (918), 258 states have call predecessors, (918), 268 states have return successors, (927), 900 states have call predecessors, (927), 911 states have call successors, (927) [2022-03-18 05:54:33,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 5095 transitions. [2022-03-18 05:54:33,366 INFO L78 Accepts]: Start accepts. Automaton has 3627 states and 5095 transitions. Word has length 93 [2022-03-18 05:54:33,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:54:33,367 INFO L478 AbstractCegarLoop]: Abstraction has 3627 states and 5095 transitions. [2022-03-18 05:54:33,367 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-03-18 05:54:33,367 INFO L276 IsEmpty]: Start isEmpty. Operand 3627 states and 5095 transitions. [2022-03-18 05:54:33,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-18 05:54:33,369 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:54:33,369 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:54:33,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-03-18 05:54:33,570 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 [2022-03-18 05:54:33,570 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:54:33,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:54:33,570 INFO L85 PathProgramCache]: Analyzing trace with hash 681880132, now seen corresponding path program 1 times [2022-03-18 05:54:33,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:33,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2107365549] [2022-03-18 05:54:33,572 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:54:33,572 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:54:33,572 INFO L85 PathProgramCache]: Analyzing trace with hash 681880132, now seen corresponding path program 2 times [2022-03-18 05:54:33,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:54:33,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003392242] [2022-03-18 05:54:33,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:54:33,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:54:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:33,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:54:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:33,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:54:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:33,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:54:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:33,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:54:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:33,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:54:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:33,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:54:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:33,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:54:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:33,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 05:54:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:33,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 05:54:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:33,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-18 05:54:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:33,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:54:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:33,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-18 05:54:33,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:54:33,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003392242] [2022-03-18 05:54:33,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003392242] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:54:33,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345381274] [2022-03-18 05:54:33,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:54:33,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:54:33,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:54:33,990 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) [2022-03-18 05:54:33,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-18 05:54:35,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:54:35,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:54:35,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-18 05:54:35,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:54:36,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 05:54:36,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:54:36,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345381274] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:36,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:54:36,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-03-18 05:54:36,139 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:54:36,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2107365549] [2022-03-18 05:54:36,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2107365549] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:36,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:54:36,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 05:54:36,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646595120] [2022-03-18 05:54:36,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:54:36,139 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 05:54:36,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:36,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 05:54:36,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-03-18 05:54:36,140 INFO L87 Difference]: Start difference. First operand 3627 states and 5095 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-03-18 05:54:41,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:54:41,242 INFO L93 Difference]: Finished difference Result 6266 states and 8894 transitions. [2022-03-18 05:54:41,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 05:54:41,243 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 93 [2022-03-18 05:54:41,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:54:41,260 INFO L225 Difference]: With dead ends: 6266 [2022-03-18 05:54:41,261 INFO L226 Difference]: Without dead ends: 6182 [2022-03-18 05:54:41,264 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-18 05:54:41,264 INFO L912 BasicCegarLoop]: 4273 mSDtfsCounter, 1867 mSDsluCounter, 15962 mSDsCounter, 0 mSdLazyCounter, 4370 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1868 SdHoareTripleChecker+Valid, 20235 SdHoareTripleChecker+Invalid, 4383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:54:41,264 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1868 Valid, 20235 Invalid, 4383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 4370 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-18 05:54:41,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6182 states. [2022-03-18 05:54:42,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6182 to 3638. [2022-03-18 05:54:42,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 2449 states have (on average 1.332788893425888) internal successors, (3264), 2521 states have internal predecessors, (3264), 918 states have call successors, (918), 258 states have call predecessors, (918), 270 states have return successors, (929), 900 states have call predecessors, (929), 911 states have call successors, (929) [2022-03-18 05:54:42,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5111 transitions. [2022-03-18 05:54:42,729 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5111 transitions. Word has length 93 [2022-03-18 05:54:42,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:54:42,729 INFO L478 AbstractCegarLoop]: Abstraction has 3638 states and 5111 transitions. [2022-03-18 05:54:42,729 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-03-18 05:54:42,729 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5111 transitions. [2022-03-18 05:54:42,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-03-18 05:54:42,731 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:54:42,731 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:54:42,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-03-18 05:54:42,932 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 [2022-03-18 05:54:42,932 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:54:42,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:54:42,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1654728766, now seen corresponding path program 1 times [2022-03-18 05:54:42,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:42,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [508118841] [2022-03-18 05:54:42,934 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:54:42,934 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:54:42,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1654728766, now seen corresponding path program 2 times [2022-03-18 05:54:42,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:54:42,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552588263] [2022-03-18 05:54:42,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:54:42,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:54:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:43,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:54:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:43,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:54:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:43,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:54:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:43,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:54:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:43,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:54:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:43,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:54:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:43,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:54:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:43,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 05:54:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:43,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:54:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:43,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:54:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:43,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:54:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:43,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:54:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:54:43,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:54:43,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:54:43,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552588263] [2022-03-18 05:54:43,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552588263] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:54:43,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057192516] [2022-03-18 05:54:43,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:54:43,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:54:43,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:54:43,382 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) [2022-03-18 05:54:43,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-18 05:54:45,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:54:45,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:54:45,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 1956 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-18 05:54:45,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:54:45,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 9 [2022-03-18 05:54:45,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:54:45,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:54:45,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057192516] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:45,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:54:45,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2022-03-18 05:54:45,471 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:54:45,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [508118841] [2022-03-18 05:54:45,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [508118841] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:54:45,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:54:45,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:54:45,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628705008] [2022-03-18 05:54:45,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:54:45,472 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:54:45,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:54:45,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:54:45,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-03-18 05:54:45,472 INFO L87 Difference]: Start difference. First operand 3638 states and 5111 transitions. Second operand has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-03-18 05:54:53,897 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:54:55,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:54:57,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:54:59,059 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:55:08,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:55:08,598 INFO L93 Difference]: Finished difference Result 4310 states and 6120 transitions. [2022-03-18 05:55:08,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 05:55:08,598 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 95 [2022-03-18 05:55:08,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:55:08,608 INFO L225 Difference]: With dead ends: 4310 [2022-03-18 05:55:08,608 INFO L226 Difference]: Without dead ends: 4236 [2022-03-18 05:55:08,609 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2022-03-18 05:55:08,610 INFO L912 BasicCegarLoop]: 2106 mSDtfsCounter, 1872 mSDsluCounter, 5679 mSDsCounter, 0 mSdLazyCounter, 7575 mSolverCounterSat, 1305 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2105 SdHoareTripleChecker+Valid, 7785 SdHoareTripleChecker+Invalid, 8882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1305 IncrementalHoareTripleChecker+Valid, 7575 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2022-03-18 05:55:08,610 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2105 Valid, 7785 Invalid, 8882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1305 Valid, 7575 Invalid, 2 Unknown, 0 Unchecked, 20.9s Time] [2022-03-18 05:55:08,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4236 states. [2022-03-18 05:55:10,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4236 to 3644. [2022-03-18 05:55:10,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 2453 states have (on average 1.3322462291072157) internal successors, (3268), 2525 states have internal predecessors, (3268), 919 states have call successors, (919), 258 states have call predecessors, (919), 271 states have return successors, (931), 902 states have call predecessors, (931), 912 states have call successors, (931) [2022-03-18 05:55:10,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 5118 transitions. [2022-03-18 05:55:10,086 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 5118 transitions. Word has length 95 [2022-03-18 05:55:10,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:55:10,087 INFO L478 AbstractCegarLoop]: Abstraction has 3644 states and 5118 transitions. [2022-03-18 05:55:10,087 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-03-18 05:55:10,087 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 5118 transitions. [2022-03-18 05:55:10,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-03-18 05:55:10,088 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:55:10,088 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:55:10,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-03-18 05:55:10,289 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 [2022-03-18 05:55:10,289 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:55:10,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:55:10,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1552708288, now seen corresponding path program 1 times [2022-03-18 05:55:10,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:55:10,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [958112901] [2022-03-18 05:55:10,291 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:55:10,291 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:55:10,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1552708288, now seen corresponding path program 2 times [2022-03-18 05:55:10,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:55:10,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182843815] [2022-03-18 05:55:10,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:55:10,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:55:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:10,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:55:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:10,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:55:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:10,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:55:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:10,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:55:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:10,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:55:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:10,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:55:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:10,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:55:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:10,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 05:55:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:10,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:55:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:10,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:55:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:10,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:55:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:10,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:55:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:10,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:55:10,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:55:10,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182843815] [2022-03-18 05:55:10,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182843815] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:55:10,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045574540] [2022-03-18 05:55:10,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:55:10,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:55:10,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:55:10,737 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) [2022-03-18 05:55:10,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-18 05:55:12,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:55:12,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:55:12,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 1999 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-18 05:55:12,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:55:12,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 10 [2022-03-18 05:55:12,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:55:12,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:55:12,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045574540] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:55:12,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:55:12,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-03-18 05:55:12,901 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:55:12,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [958112901] [2022-03-18 05:55:12,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [958112901] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:55:12,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:55:12,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 05:55:12,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335318817] [2022-03-18 05:55:12,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:55:12,902 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 05:55:12,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:55:12,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 05:55:12,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-03-18 05:55:12,903 INFO L87 Difference]: Start difference. First operand 3644 states and 5118 transitions. Second operand has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-03-18 05:55:18,359 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:55:24,796 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:55:25,842 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:55:27,860 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:55:29,879 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:55:31,446 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-18 05:55:43,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:55:43,280 INFO L93 Difference]: Finished difference Result 7037 states and 10034 transitions. [2022-03-18 05:55:43,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 05:55:43,281 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 106 [2022-03-18 05:55:43,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:55:43,291 INFO L225 Difference]: With dead ends: 7037 [2022-03-18 05:55:43,291 INFO L226 Difference]: Without dead ends: 4215 [2022-03-18 05:55:43,295 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-03-18 05:55:43,295 INFO L912 BasicCegarLoop]: 2102 mSDtfsCounter, 904 mSDsluCounter, 6424 mSDsCounter, 0 mSdLazyCounter, 8018 mSolverCounterSat, 515 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 8526 SdHoareTripleChecker+Invalid, 8536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 8018 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:55:43,295 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 8526 Invalid, 8536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 8018 Invalid, 3 Unknown, 0 Unchecked, 28.1s Time] [2022-03-18 05:55:43,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4215 states. [2022-03-18 05:55:44,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4215 to 3644. [2022-03-18 05:55:44,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 2453 states have (on average 1.3318385650224216) internal successors, (3267), 2525 states have internal predecessors, (3267), 919 states have call successors, (919), 258 states have call predecessors, (919), 271 states have return successors, (931), 902 states have call predecessors, (931), 912 states have call successors, (931) [2022-03-18 05:55:44,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 5117 transitions. [2022-03-18 05:55:44,717 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 5117 transitions. Word has length 106 [2022-03-18 05:55:44,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:55:44,717 INFO L478 AbstractCegarLoop]: Abstraction has 3644 states and 5117 transitions. [2022-03-18 05:55:44,717 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-03-18 05:55:44,717 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 5117 transitions. [2022-03-18 05:55:44,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-03-18 05:55:44,719 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:55:44,719 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:55:44,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-03-18 05:55:44,920 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 [2022-03-18 05:55:44,920 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:55:44,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:55:44,920 INFO L85 PathProgramCache]: Analyzing trace with hash 897737887, now seen corresponding path program 1 times [2022-03-18 05:55:44,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:55:44,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [232800044] [2022-03-18 05:55:44,923 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:55:44,923 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:55:44,923 INFO L85 PathProgramCache]: Analyzing trace with hash 897737887, now seen corresponding path program 2 times [2022-03-18 05:55:44,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:55:44,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510065096] [2022-03-18 05:55:44,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:55:44,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:55:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:45,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:55:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:45,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:55:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:45,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:55:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:45,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:55:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:45,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 05:55:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:45,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:55:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:45,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-18 05:55:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:45,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 05:55:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:45,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-18 05:55:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:45,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:55:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:45,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:55:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:45,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-18 05:55:45,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:55:45,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510065096] [2022-03-18 05:55:45,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510065096] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:55:45,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252045743] [2022-03-18 05:55:45,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:55:45,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:55:45,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:55:45,357 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) [2022-03-18 05:55:45,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-18 05:55:47,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:55:47,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:55:47,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 2172 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-18 05:55:47,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:55:47,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 05:55:47,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:55:47,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252045743] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:55:47,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:55:47,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-03-18 05:55:47,563 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:55:47,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [232800044] [2022-03-18 05:55:47,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [232800044] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:55:47,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:55:47,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 05:55:47,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764567897] [2022-03-18 05:55:47,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:55:47,564 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 05:55:47,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:55:47,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 05:55:47,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:55:47,564 INFO L87 Difference]: Start difference. First operand 3644 states and 5117 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-18 05:55:51,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:55:51,972 INFO L93 Difference]: Finished difference Result 7303 states and 10471 transitions. [2022-03-18 05:55:51,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 05:55:51,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2022-03-18 05:55:51,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:55:51,990 INFO L225 Difference]: With dead ends: 7303 [2022-03-18 05:55:51,991 INFO L226 Difference]: Without dead ends: 4843 [2022-03-18 05:55:51,999 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:55:52,000 INFO L912 BasicCegarLoop]: 4193 mSDtfsCounter, 4201 mSDsluCounter, 3112 mSDsCounter, 0 mSdLazyCounter, 1857 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4201 SdHoareTripleChecker+Valid, 7305 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-18 05:55:52,000 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [4201 Valid, 7305 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1857 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-18 05:55:52,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4843 states. [2022-03-18 05:55:53,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4843 to 3641. [2022-03-18 05:55:53,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3641 states, 2450 states have (on average 1.3306122448979592) internal successors, (3260), 2522 states have internal predecessors, (3260), 919 states have call successors, (919), 258 states have call predecessors, (919), 271 states have return successors, (931), 902 states have call predecessors, (931), 912 states have call successors, (931) [2022-03-18 05:55:53,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3641 states to 3641 states and 5110 transitions. [2022-03-18 05:55:53,526 INFO L78 Accepts]: Start accepts. Automaton has 3641 states and 5110 transitions. Word has length 101 [2022-03-18 05:55:53,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:55:53,526 INFO L478 AbstractCegarLoop]: Abstraction has 3641 states and 5110 transitions. [2022-03-18 05:55:53,526 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-18 05:55:53,526 INFO L276 IsEmpty]: Start isEmpty. Operand 3641 states and 5110 transitions. [2022-03-18 05:55:53,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-18 05:55:53,528 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:55:53,528 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:55:53,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-03-18 05:55:53,728 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 [2022-03-18 05:55:53,729 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:55:53,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:55:53,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1320781830, now seen corresponding path program 1 times [2022-03-18 05:55:53,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:55:53,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1980033069] [2022-03-18 05:55:53,731 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:55:53,731 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:55:53,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1320781830, now seen corresponding path program 2 times [2022-03-18 05:55:53,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:55:53,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502197684] [2022-03-18 05:55:53,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:55:53,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:55:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:53,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:55:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:53,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:55:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:53,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:55:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:54,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:55:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:54,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:55:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:54,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:55:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:54,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:55:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:54,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 05:55:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:54,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:55:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:54,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:55:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:54,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:55:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:54,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:55:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:55:54,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:55:54,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:55:54,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502197684] [2022-03-18 05:55:54,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502197684] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:55:54,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661954338] [2022-03-18 05:55:54,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:55:54,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:55:54,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:55:54,168 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) [2022-03-18 05:55:54,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-18 05:55:55,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:55:55,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:55:56,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-18 05:55:56,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:55:56,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:55:56,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:55:56,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661954338] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:55:56,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:55:56,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [10] total 24 [2022-03-18 05:55:56,362 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:55:56,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1980033069] [2022-03-18 05:55:56,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1980033069] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:55:56,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:55:56,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:55:56,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949225762] [2022-03-18 05:55:56,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:55:56,363 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:55:56,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:55:56,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:55:56,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2022-03-18 05:55:56,363 INFO L87 Difference]: Start difference. First operand 3641 states and 5110 transitions. Second operand has 16 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:56:04,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:56:04,546 INFO L93 Difference]: Finished difference Result 6287 states and 8922 transitions. [2022-03-18 05:56:04,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 05:56:04,547 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 96 [2022-03-18 05:56:04,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:56:04,570 INFO L225 Difference]: With dead ends: 6287 [2022-03-18 05:56:04,570 INFO L226 Difference]: Without dead ends: 6269 [2022-03-18 05:56:04,574 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-18 05:56:04,575 INFO L912 BasicCegarLoop]: 2913 mSDtfsCounter, 2436 mSDsluCounter, 23679 mSDsCounter, 0 mSdLazyCounter, 10764 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2437 SdHoareTripleChecker+Valid, 26592 SdHoareTripleChecker+Invalid, 10791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 10764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:56:04,575 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2437 Valid, 26592 Invalid, 10791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 10764 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-03-18 05:56:04,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6269 states. [2022-03-18 05:56:06,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6269 to 3662. [2022-03-18 05:56:06,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 2464 states have (on average 1.3287337662337662) internal successors, (3274), 2537 states have internal predecessors, (3274), 921 states have call successors, (921), 260 states have call predecessors, (921), 276 states have return successors, (944), 906 states have call predecessors, (944), 914 states have call successors, (944) [2022-03-18 05:56:06,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 5139 transitions. [2022-03-18 05:56:06,166 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 5139 transitions. Word has length 96 [2022-03-18 05:56:06,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:56:06,167 INFO L478 AbstractCegarLoop]: Abstraction has 3662 states and 5139 transitions. [2022-03-18 05:56:06,167 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:56:06,167 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 5139 transitions. [2022-03-18 05:56:06,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-18 05:56:06,168 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:56:06,169 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:56:06,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-03-18 05:56:06,369 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 [2022-03-18 05:56:06,369 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:56:06,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:56:06,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1012184443, now seen corresponding path program 1 times [2022-03-18 05:56:06,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:56:06,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1297002139] [2022-03-18 05:56:06,372 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:56:06,372 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:56:06,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1012184443, now seen corresponding path program 2 times [2022-03-18 05:56:06,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:56:06,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419673694] [2022-03-18 05:56:06,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:56:06,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:56:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:06,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:56:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:06,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:56:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:06,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:56:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:06,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:56:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:06,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:56:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:06,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:56:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:06,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:56:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:06,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 05:56:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:06,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:56:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:06,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:56:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:06,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:56:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:06,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:56:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:56:06,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:56:06,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419673694] [2022-03-18 05:56:06,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419673694] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:56:06,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487989838] [2022-03-18 05:56:06,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:56:06,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:56:06,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:56:06,826 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) [2022-03-18 05:56:06,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-18 05:56:08,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:56:08,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:56:08,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 2004 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-18 05:56:08,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:56:09,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:56:09,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:56:09,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487989838] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:56:09,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:56:09,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-18 05:56:09,137 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:56:09,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1297002139] [2022-03-18 05:56:09,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1297002139] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:56:09,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:56:09,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:56:09,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209228266] [2022-03-18 05:56:09,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:56:09,138 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:56:09,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:56:09,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:56:09,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-18 05:56:09,138 INFO L87 Difference]: Start difference. First operand 3662 states and 5139 transitions. Second operand has 16 states, 16 states have (on average 4.75) internal successors, (76), 12 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:56:17,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:56:17,020 INFO L93 Difference]: Finished difference Result 6286 states and 8920 transitions. [2022-03-18 05:56:17,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 05:56:17,020 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 12 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2022-03-18 05:56:17,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:56:17,035 INFO L225 Difference]: With dead ends: 6286 [2022-03-18 05:56:17,035 INFO L226 Difference]: Without dead ends: 6265 [2022-03-18 05:56:17,037 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-18 05:56:17,037 INFO L912 BasicCegarLoop]: 2930 mSDtfsCounter, 2438 mSDsluCounter, 24015 mSDsCounter, 0 mSdLazyCounter, 9883 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2439 SdHoareTripleChecker+Valid, 26945 SdHoareTripleChecker+Invalid, 9911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 9883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-03-18 05:56:17,038 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2439 Valid, 26945 Invalid, 9911 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 9883 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-03-18 05:56:17,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6265 states. [2022-03-18 05:56:18,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6265 to 3662. [2022-03-18 05:56:18,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 2464 states have (on average 1.3287337662337662) internal successors, (3274), 2537 states have internal predecessors, (3274), 921 states have call successors, (921), 260 states have call predecessors, (921), 276 states have return successors, (943), 906 states have call predecessors, (943), 914 states have call successors, (943) [2022-03-18 05:56:18,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 5138 transitions. [2022-03-18 05:56:18,637 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 5138 transitions. Word has length 102 [2022-03-18 05:56:18,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:56:18,638 INFO L478 AbstractCegarLoop]: Abstraction has 3662 states and 5138 transitions. [2022-03-18 05:56:18,638 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 12 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:56:18,638 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 5138 transitions. [2022-03-18 05:56:18,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-03-18 05:56:18,639 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:56:18,639 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:56:18,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-03-18 05:56:18,840 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 [2022-03-18 05:56:18,840 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:56:18,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:56:18,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1908271104, now seen corresponding path program 1 times [2022-03-18 05:56:18,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:56:18,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [608625958] [2022-03-18 05:56:18,842 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:56:18,842 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:56:18,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1908271104, now seen corresponding path program 2 times [2022-03-18 05:56:18,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:56:18,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084484137] [2022-03-18 05:56:18,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:56:18,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:56:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:19,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:56:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:19,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:56:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:19,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:56:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:19,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:56:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:19,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:56:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:19,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:56:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:19,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:56:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:19,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 05:56:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:19,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:56:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:19,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:56:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:19,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:56:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:19,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:56:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:19,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:56:19,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:56:19,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084484137] [2022-03-18 05:56:19,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084484137] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:56:19,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749758964] [2022-03-18 05:56:19,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:56:19,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:56:19,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:56:19,260 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) [2022-03-18 05:56:19,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-18 05:56:21,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:56:21,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:56:21,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 1956 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-18 05:56:21,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:56:21,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:56:21,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:56:21,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749758964] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:56:21,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:56:21,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [10] total 24 [2022-03-18 05:56:21,543 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:56:21,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [608625958] [2022-03-18 05:56:21,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [608625958] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:56:21,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:56:21,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:56:21,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548526553] [2022-03-18 05:56:21,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:56:21,544 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:56:21,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:56:21,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:56:21,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2022-03-18 05:56:21,544 INFO L87 Difference]: Start difference. First operand 3662 states and 5138 transitions. Second operand has 16 states, 16 states have (on average 4.3125) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:56:29,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:56:29,604 INFO L93 Difference]: Finished difference Result 6282 states and 8915 transitions. [2022-03-18 05:56:29,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 05:56:29,604 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 95 [2022-03-18 05:56:29,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:56:29,619 INFO L225 Difference]: With dead ends: 6282 [2022-03-18 05:56:29,619 INFO L226 Difference]: Without dead ends: 6261 [2022-03-18 05:56:29,620 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-18 05:56:29,621 INFO L912 BasicCegarLoop]: 2891 mSDtfsCounter, 2435 mSDsluCounter, 24240 mSDsCounter, 0 mSdLazyCounter, 9857 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2436 SdHoareTripleChecker+Valid, 27131 SdHoareTripleChecker+Invalid, 9886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 9857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-03-18 05:56:29,621 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2436 Valid, 27131 Invalid, 9886 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 9857 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-03-18 05:56:29,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6261 states. [2022-03-18 05:56:31,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6261 to 3659. [2022-03-18 05:56:31,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3659 states, 2462 states have (on average 1.3290008123476849) internal successors, (3272), 2535 states have internal predecessors, (3272), 921 states have call successors, (921), 260 states have call predecessors, (921), 275 states have return successors, (941), 905 states have call predecessors, (941), 914 states have call successors, (941) [2022-03-18 05:56:31,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3659 states to 3659 states and 5134 transitions. [2022-03-18 05:56:31,233 INFO L78 Accepts]: Start accepts. Automaton has 3659 states and 5134 transitions. Word has length 95 [2022-03-18 05:56:31,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:56:31,233 INFO L478 AbstractCegarLoop]: Abstraction has 3659 states and 5134 transitions. [2022-03-18 05:56:31,233 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:56:31,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3659 states and 5134 transitions. [2022-03-18 05:56:31,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-03-18 05:56:31,235 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:56:31,235 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:56:31,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-03-18 05:56:31,435 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 [2022-03-18 05:56:31,436 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:56:31,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:56:31,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1579773890, now seen corresponding path program 1 times [2022-03-18 05:56:31,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:56:31,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1950119717] [2022-03-18 05:56:31,438 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:56:31,438 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:56:31,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1579773890, now seen corresponding path program 2 times [2022-03-18 05:56:31,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:56:31,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511834534] [2022-03-18 05:56:31,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:56:31,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:56:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:31,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:56:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:31,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:56:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:31,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:56:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:31,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:56:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:31,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:56:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:31,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:56:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:31,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:56:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:31,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 05:56:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:31,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:56:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:31,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:56:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:31,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:56:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:31,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:56:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:31,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:56:31,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:56:31,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511834534] [2022-03-18 05:56:31,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511834534] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:56:31,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089974451] [2022-03-18 05:56:31,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:56:31,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:56:31,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:56:31,906 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) [2022-03-18 05:56:31,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-18 05:56:33,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:56:33,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:56:33,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 1999 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-18 05:56:33,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:56:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:56:34,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:56:34,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089974451] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:56:34,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:56:34,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-18 05:56:34,230 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:56:34,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1950119717] [2022-03-18 05:56:34,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1950119717] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:56:34,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:56:34,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:56:34,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447125932] [2022-03-18 05:56:34,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:56:34,231 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:56:34,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:56:34,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:56:34,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-18 05:56:34,231 INFO L87 Difference]: Start difference. First operand 3659 states and 5134 transitions. Second operand has 16 states, 16 states have (on average 5.0) internal successors, (80), 12 states have internal predecessors, (80), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:56:42,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:56:42,614 INFO L93 Difference]: Finished difference Result 6278 states and 8910 transitions. [2022-03-18 05:56:42,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 05:56:42,614 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0) internal successors, (80), 12 states have internal predecessors, (80), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 106 [2022-03-18 05:56:42,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:56:42,630 INFO L225 Difference]: With dead ends: 6278 [2022-03-18 05:56:42,630 INFO L226 Difference]: Without dead ends: 6257 [2022-03-18 05:56:42,633 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-18 05:56:42,633 INFO L912 BasicCegarLoop]: 2949 mSDtfsCounter, 2419 mSDsluCounter, 29158 mSDsCounter, 0 mSdLazyCounter, 10778 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2420 SdHoareTripleChecker+Valid, 32107 SdHoareTripleChecker+Invalid, 10800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 10778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-03-18 05:56:42,633 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2420 Valid, 32107 Invalid, 10800 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 10778 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-03-18 05:56:42,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6257 states. [2022-03-18 05:56:44,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6257 to 3659. [2022-03-18 05:56:44,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3659 states, 2462 states have (on average 1.3290008123476849) internal successors, (3272), 2535 states have internal predecessors, (3272), 921 states have call successors, (921), 260 states have call predecessors, (921), 275 states have return successors, (940), 905 states have call predecessors, (940), 914 states have call successors, (940) [2022-03-18 05:56:44,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3659 states to 3659 states and 5133 transitions. [2022-03-18 05:56:44,259 INFO L78 Accepts]: Start accepts. Automaton has 3659 states and 5133 transitions. Word has length 106 [2022-03-18 05:56:44,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:56:44,259 INFO L478 AbstractCegarLoop]: Abstraction has 3659 states and 5133 transitions. [2022-03-18 05:56:44,259 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0) internal successors, (80), 12 states have internal predecessors, (80), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:56:44,259 INFO L276 IsEmpty]: Start isEmpty. Operand 3659 states and 5133 transitions. [2022-03-18 05:56:44,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-18 05:56:44,260 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:56:44,260 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:56:44,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-03-18 05:56:44,461 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 [2022-03-18 05:56:44,461 INFO L403 AbstractCegarLoop]: === Iteration 71 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:56:44,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:56:44,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1494471512, now seen corresponding path program 1 times [2022-03-18 05:56:44,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:56:44,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1081916471] [2022-03-18 05:56:44,464 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:56:44,464 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:56:44,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1494471512, now seen corresponding path program 2 times [2022-03-18 05:56:44,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:56:44,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187936686] [2022-03-18 05:56:44,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:56:44,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:56:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:44,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:56:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:44,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:56:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:44,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:56:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:44,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:56:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:44,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:56:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:44,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:56:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:44,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:56:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:44,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 05:56:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:44,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:56:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:44,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:56:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:44,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:56:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:44,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:56:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:44,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:56:44,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:56:44,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187936686] [2022-03-18 05:56:44,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187936686] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:56:44,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653115567] [2022-03-18 05:56:44,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:56:44,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:56:44,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:56:44,926 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) [2022-03-18 05:56:44,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-18 05:56:46,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:56:46,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:56:46,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-18 05:56:46,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:56:47,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:56:47,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:56:47,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653115567] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:56:47,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:56:47,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-18 05:56:47,290 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:56:47,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1081916471] [2022-03-18 05:56:47,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1081916471] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:56:47,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:56:47,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:56:47,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129172791] [2022-03-18 05:56:47,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:56:47,290 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:56:47,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:56:47,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:56:47,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-18 05:56:47,291 INFO L87 Difference]: Start difference. First operand 3659 states and 5133 transitions. Second operand has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:56:55,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:56:55,176 INFO L93 Difference]: Finished difference Result 6274 states and 8905 transitions. [2022-03-18 05:56:55,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 05:56:55,177 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2022-03-18 05:56:55,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:56:55,190 INFO L225 Difference]: With dead ends: 6274 [2022-03-18 05:56:55,190 INFO L226 Difference]: Without dead ends: 6253 [2022-03-18 05:56:55,192 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-18 05:56:55,192 INFO L912 BasicCegarLoop]: 2913 mSDtfsCounter, 2426 mSDsluCounter, 22475 mSDsCounter, 0 mSdLazyCounter, 9797 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2427 SdHoareTripleChecker+Valid, 25388 SdHoareTripleChecker+Invalid, 9822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 9797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-03-18 05:56:55,192 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2427 Valid, 25388 Invalid, 9822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 9797 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-03-18 05:56:55,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6253 states. [2022-03-18 05:56:56,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6253 to 3659. [2022-03-18 05:56:56,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3659 states, 2462 states have (on average 1.3290008123476849) internal successors, (3272), 2535 states have internal predecessors, (3272), 921 states have call successors, (921), 260 states have call predecessors, (921), 275 states have return successors, (939), 905 states have call predecessors, (939), 914 states have call successors, (939) [2022-03-18 05:56:56,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3659 states to 3659 states and 5132 transitions. [2022-03-18 05:56:56,857 INFO L78 Accepts]: Start accepts. Automaton has 3659 states and 5132 transitions. Word has length 103 [2022-03-18 05:56:56,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:56:56,858 INFO L478 AbstractCegarLoop]: Abstraction has 3659 states and 5132 transitions. [2022-03-18 05:56:56,858 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:56:56,858 INFO L276 IsEmpty]: Start isEmpty. Operand 3659 states and 5132 transitions. [2022-03-18 05:56:56,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-18 05:56:56,859 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:56:56,859 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:56:56,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-03-18 05:56:57,060 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 [2022-03-18 05:56:57,060 INFO L403 AbstractCegarLoop]: === Iteration 72 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:56:57,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:56:57,060 INFO L85 PathProgramCache]: Analyzing trace with hash -720706508, now seen corresponding path program 1 times [2022-03-18 05:56:57,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:56:57,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [382076315] [2022-03-18 05:56:57,062 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:56:57,062 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:56:57,062 INFO L85 PathProgramCache]: Analyzing trace with hash -720706508, now seen corresponding path program 2 times [2022-03-18 05:56:57,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:56:57,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246879753] [2022-03-18 05:56:57,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:56:57,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:56:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:57,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:56:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:57,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:56:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:57,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:56:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:57,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:56:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:57,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:56:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:57,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:56:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:57,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:56:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:57,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:56:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:57,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:56:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:57,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:56:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:57,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:56:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:57,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:56:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:56:57,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:56:57,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:56:57,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246879753] [2022-03-18 05:56:57,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246879753] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:56:57,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725208085] [2022-03-18 05:56:57,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:56:57,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:56:57,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:56:57,535 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) [2022-03-18 05:56:57,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-18 05:56:59,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:56:59,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:56:59,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 1996 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-18 05:56:59,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:56:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:56:59,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:56:59,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725208085] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:56:59,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:56:59,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-18 05:56:59,891 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:56:59,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [382076315] [2022-03-18 05:56:59,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [382076315] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:56:59,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:56:59,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:56:59,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81007497] [2022-03-18 05:56:59,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:56:59,891 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:56:59,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:56:59,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:56:59,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-18 05:56:59,892 INFO L87 Difference]: Start difference. First operand 3659 states and 5132 transitions. Second operand has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:57:08,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:57:08,075 INFO L93 Difference]: Finished difference Result 6270 states and 8900 transitions. [2022-03-18 05:57:08,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 05:57:08,075 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2022-03-18 05:57:08,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:57:08,091 INFO L225 Difference]: With dead ends: 6270 [2022-03-18 05:57:08,091 INFO L226 Difference]: Without dead ends: 6249 [2022-03-18 05:57:08,093 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-18 05:57:08,093 INFO L912 BasicCegarLoop]: 2896 mSDtfsCounter, 2422 mSDsluCounter, 22414 mSDsCounter, 0 mSdLazyCounter, 9774 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2423 SdHoareTripleChecker+Valid, 25310 SdHoareTripleChecker+Invalid, 9798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 9774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-03-18 05:57:08,093 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2423 Valid, 25310 Invalid, 9798 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 9774 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-03-18 05:57:08,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6249 states. [2022-03-18 05:57:09,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6249 to 3659. [2022-03-18 05:57:09,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3659 states, 2462 states have (on average 1.3290008123476849) internal successors, (3272), 2535 states have internal predecessors, (3272), 921 states have call successors, (921), 260 states have call predecessors, (921), 275 states have return successors, (938), 905 states have call predecessors, (938), 914 states have call successors, (938) [2022-03-18 05:57:09,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3659 states to 3659 states and 5131 transitions. [2022-03-18 05:57:09,800 INFO L78 Accepts]: Start accepts. Automaton has 3659 states and 5131 transitions. Word has length 103 [2022-03-18 05:57:09,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:57:09,800 INFO L478 AbstractCegarLoop]: Abstraction has 3659 states and 5131 transitions. [2022-03-18 05:57:09,801 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:57:09,801 INFO L276 IsEmpty]: Start isEmpty. Operand 3659 states and 5131 transitions. [2022-03-18 05:57:09,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-18 05:57:09,803 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:57:09,803 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:57:09,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-03-18 05:57:10,019 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 [2022-03-18 05:57:10,019 INFO L403 AbstractCegarLoop]: === Iteration 73 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:57:10,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:57:10,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1608832473, now seen corresponding path program 1 times [2022-03-18 05:57:10,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:57:10,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [10656036] [2022-03-18 05:57:10,022 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:57:10,022 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:57:10,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1608832473, now seen corresponding path program 2 times [2022-03-18 05:57:10,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:57:10,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558339107] [2022-03-18 05:57:10,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:57:10,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:57:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:10,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:57:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:10,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:57:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:10,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:57:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:10,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:57:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:10,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:57:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:10,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:57:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:10,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:57:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:10,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:57:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:10,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:57:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:10,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:57:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:10,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 05:57:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:10,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:57:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:10,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:57:10,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:57:10,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558339107] [2022-03-18 05:57:10,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558339107] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:57:10,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179891106] [2022-03-18 05:57:10,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:57:10,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:57:10,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:57:10,524 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) [2022-03-18 05:57:10,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-03-18 05:57:12,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:57:12,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:57:12,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 1978 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-18 05:57:12,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:57:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:57:13,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:57:13,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179891106] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:57:13,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:57:13,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-18 05:57:13,041 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:57:13,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [10656036] [2022-03-18 05:57:13,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [10656036] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:57:13,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:57:13,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:57:13,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154542656] [2022-03-18 05:57:13,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:57:13,041 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:57:13,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:57:13,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:57:13,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-18 05:57:13,042 INFO L87 Difference]: Start difference. First operand 3659 states and 5131 transitions. Second operand has 16 states, 16 states have (on average 4.75) internal successors, (76), 12 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:57:21,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:57:21,427 INFO L93 Difference]: Finished difference Result 6266 states and 8895 transitions. [2022-03-18 05:57:21,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 05:57:21,427 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 12 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2022-03-18 05:57:21,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:57:21,441 INFO L225 Difference]: With dead ends: 6266 [2022-03-18 05:57:21,441 INFO L226 Difference]: Without dead ends: 6245 [2022-03-18 05:57:21,442 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-18 05:57:21,443 INFO L912 BasicCegarLoop]: 3207 mSDtfsCounter, 2412 mSDsluCounter, 23776 mSDsCounter, 0 mSdLazyCounter, 9765 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2413 SdHoareTripleChecker+Valid, 26983 SdHoareTripleChecker+Invalid, 9786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 9765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-03-18 05:57:21,443 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2413 Valid, 26983 Invalid, 9786 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 9765 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-03-18 05:57:21,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6245 states. [2022-03-18 05:57:23,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6245 to 3659. [2022-03-18 05:57:23,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3659 states, 2462 states have (on average 1.3290008123476849) internal successors, (3272), 2535 states have internal predecessors, (3272), 921 states have call successors, (921), 260 states have call predecessors, (921), 275 states have return successors, (937), 905 states have call predecessors, (937), 914 states have call successors, (937) [2022-03-18 05:57:23,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3659 states to 3659 states and 5130 transitions. [2022-03-18 05:57:23,170 INFO L78 Accepts]: Start accepts. Automaton has 3659 states and 5130 transitions. Word has length 102 [2022-03-18 05:57:23,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:57:23,170 INFO L478 AbstractCegarLoop]: Abstraction has 3659 states and 5130 transitions. [2022-03-18 05:57:23,171 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 12 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:57:23,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3659 states and 5130 transitions. [2022-03-18 05:57:23,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-18 05:57:23,172 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:57:23,172 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:57:23,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-03-18 05:57:23,381 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 [2022-03-18 05:57:23,382 INFO L403 AbstractCegarLoop]: === Iteration 74 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:57:23,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:57:23,382 INFO L85 PathProgramCache]: Analyzing trace with hash 2068306364, now seen corresponding path program 1 times [2022-03-18 05:57:23,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:57:23,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1851298015] [2022-03-18 05:57:23,384 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:57:23,384 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:57:23,385 INFO L85 PathProgramCache]: Analyzing trace with hash 2068306364, now seen corresponding path program 2 times [2022-03-18 05:57:23,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:57:23,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274889447] [2022-03-18 05:57:23,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:57:23,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:57:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:23,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:57:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:23,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:57:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:23,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:57:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:23,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 05:57:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:23,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:57:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:23,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:57:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:23,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-18 05:57:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:23,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:57:23,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:57:23,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274889447] [2022-03-18 05:57:23,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274889447] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:57:23,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570870646] [2022-03-18 05:57:23,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:57:23,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:57:23,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:57:23,777 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) [2022-03-18 05:57:23,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-03-18 05:57:25,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:57:25,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:57:25,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 05:57:25,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:57:25,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:57:25,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:57:25,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570870646] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:57:25,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:57:25,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-03-18 05:57:25,896 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:57:25,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1851298015] [2022-03-18 05:57:25,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1851298015] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:57:25,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:57:25,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 05:57:25,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626524695] [2022-03-18 05:57:25,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:57:25,897 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 05:57:25,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:57:25,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 05:57:25,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-03-18 05:57:25,898 INFO L87 Difference]: Start difference. First operand 3659 states and 5130 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 05:57:27,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:57:27,640 INFO L93 Difference]: Finished difference Result 3718 states and 5199 transitions. [2022-03-18 05:57:27,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 05:57:27,641 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 [2022-03-18 05:57:27,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:57:27,649 INFO L225 Difference]: With dead ends: 3718 [2022-03-18 05:57:27,649 INFO L226 Difference]: Without dead ends: 3673 [2022-03-18 05:57:27,651 INFO L911 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 [2022-03-18 05:57:27,651 INFO L912 BasicCegarLoop]: 2471 mSDtfsCounter, 33 mSDsluCounter, 9828 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 12299 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 [2022-03-18 05:57:27,651 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 12299 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 05:57:27,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3673 states. [2022-03-18 05:57:29,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3673 to 3658. [2022-03-18 05:57:29,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 2461 states have (on average 1.329134498171475) internal successors, (3271), 2534 states have internal predecessors, (3271), 921 states have call successors, (921), 260 states have call predecessors, (921), 275 states have return successors, (937), 905 states have call predecessors, (937), 914 states have call successors, (937) [2022-03-18 05:57:29,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 5129 transitions. [2022-03-18 05:57:29,356 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 5129 transitions. Word has length 93 [2022-03-18 05:57:29,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:57:29,356 INFO L478 AbstractCegarLoop]: Abstraction has 3658 states and 5129 transitions. [2022-03-18 05:57:29,357 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) [2022-03-18 05:57:29,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 5129 transitions. [2022-03-18 05:57:29,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-18 05:57:29,358 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:57:29,358 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:57:29,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-03-18 05:57:29,560 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 [2022-03-18 05:57:29,560 INFO L403 AbstractCegarLoop]: === Iteration 75 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:57:29,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:57:29,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1244564533, now seen corresponding path program 1 times [2022-03-18 05:57:29,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:57:29,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1104400081] [2022-03-18 05:57:29,563 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:57:29,563 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:57:29,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1244564533, now seen corresponding path program 2 times [2022-03-18 05:57:29,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:57:29,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581709364] [2022-03-18 05:57:29,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:57:29,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:57:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:29,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:57:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:29,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:57:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:29,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:57:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:29,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:57:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:29,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:57:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:29,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:57:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:29,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:57:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:29,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 05:57:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:30,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:57:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:30,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:57:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:30,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:57:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:30,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:57:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:57:30,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:57:30,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581709364] [2022-03-18 05:57:30,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581709364] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:57:30,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876855477] [2022-03-18 05:57:30,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:57:30,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:57:30,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:57:30,029 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) [2022-03-18 05:57:30,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-03-18 05:57:32,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:57:32,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:57:32,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 2005 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-18 05:57:32,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:57:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:57:32,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:57:32,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876855477] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:57:32,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:57:32,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-18 05:57:32,557 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:57:32,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1104400081] [2022-03-18 05:57:32,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1104400081] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:57:32,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:57:32,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:57:32,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824931872] [2022-03-18 05:57:32,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:57:32,557 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:57:32,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:57:32,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:57:32,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-18 05:57:32,558 INFO L87 Difference]: Start difference. First operand 3658 states and 5129 transitions. Second operand has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:57:40,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:57:40,603 INFO L93 Difference]: Finished difference Result 6273 states and 8902 transitions. [2022-03-18 05:57:40,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 05:57:40,604 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2022-03-18 05:57:40,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:57:40,617 INFO L225 Difference]: With dead ends: 6273 [2022-03-18 05:57:40,617 INFO L226 Difference]: Without dead ends: 6252 [2022-03-18 05:57:40,619 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-18 05:57:40,619 INFO L912 BasicCegarLoop]: 4024 mSDtfsCounter, 1897 mSDsluCounter, 35299 mSDsCounter, 0 mSdLazyCounter, 9106 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1898 SdHoareTripleChecker+Valid, 39323 SdHoareTripleChecker+Invalid, 9124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 9106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:57:40,619 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1898 Valid, 39323 Invalid, 9124 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 9106 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-03-18 05:57:40,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6252 states. [2022-03-18 05:57:42,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6252 to 3676. [2022-03-18 05:57:42,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 2473 states have (on average 1.3275374039627983) internal successors, (3283), 2547 states have internal predecessors, (3283), 923 states have call successors, (923), 262 states have call predecessors, (923), 279 states have return successors, (948), 908 states have call predecessors, (948), 916 states have call successors, (948) [2022-03-18 05:57:42,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 5154 transitions. [2022-03-18 05:57:42,440 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 5154 transitions. Word has length 103 [2022-03-18 05:57:42,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:57:42,440 INFO L478 AbstractCegarLoop]: Abstraction has 3676 states and 5154 transitions. [2022-03-18 05:57:42,440 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:57:42,440 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 5154 transitions. [2022-03-18 05:57:42,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-03-18 05:57:42,442 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:57:42,442 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:57:42,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-03-18 05:57:42,642 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 [2022-03-18 05:57:42,643 INFO L403 AbstractCegarLoop]: === Iteration 76 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:57:42,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:57:42,643 INFO L85 PathProgramCache]: Analyzing trace with hash -32586170, now seen corresponding path program 1 times [2022-03-18 05:57:42,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:57:42,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1436034759] [2022-03-18 05:57:42,645 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:57:42,645 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:57:42,645 INFO L85 PathProgramCache]: Analyzing trace with hash -32586170, now seen corresponding path program 2 times [2022-03-18 05:57:42,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:57:42,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741715195] [2022-03-18 05:57:42,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:57:42,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:57:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:42,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:57:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:42,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:57:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:42,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:57:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:42,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:57:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:43,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:57:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:43,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:57:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:43,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:57:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:43,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 05:57:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:43,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:57:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:43,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:57:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:43,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:57:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:43,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:57:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:43,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:57:43,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:57:43,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741715195] [2022-03-18 05:57:43,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741715195] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:57:43,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713566868] [2022-03-18 05:57:43,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:57:43,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:57:43,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:57:43,129 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) [2022-03-18 05:57:43,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-03-18 05:57:45,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:57:45,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:57:45,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 2000 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-18 05:57:45,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:57:45,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:57:45,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:57:45,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713566868] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:57:45,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:57:45,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-18 05:57:45,678 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:57:45,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1436034759] [2022-03-18 05:57:45,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1436034759] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:57:45,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:57:45,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:57:45,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814014152] [2022-03-18 05:57:45,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:57:45,679 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:57:45,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:57:45,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:57:45,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-18 05:57:45,679 INFO L87 Difference]: Start difference. First operand 3676 states and 5154 transitions. Second operand has 16 states, 16 states have (on average 5.0625) internal successors, (81), 12 states have internal predecessors, (81), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:57:53,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:57:53,925 INFO L93 Difference]: Finished difference Result 6269 states and 8897 transitions. [2022-03-18 05:57:53,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 05:57:53,925 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 12 states have internal predecessors, (81), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 107 [2022-03-18 05:57:53,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:57:53,940 INFO L225 Difference]: With dead ends: 6269 [2022-03-18 05:57:53,940 INFO L226 Difference]: Without dead ends: 6248 [2022-03-18 05:57:53,942 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-18 05:57:53,943 INFO L912 BasicCegarLoop]: 4355 mSDtfsCounter, 1896 mSDsluCounter, 23380 mSDsCounter, 0 mSdLazyCounter, 8995 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 27735 SdHoareTripleChecker+Invalid, 9014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 8995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-03-18 05:57:53,943 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1897 Valid, 27735 Invalid, 9014 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 8995 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-03-18 05:57:53,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6248 states. [2022-03-18 05:57:55,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6248 to 3676. [2022-03-18 05:57:55,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 2473 states have (on average 1.3275374039627983) internal successors, (3283), 2547 states have internal predecessors, (3283), 923 states have call successors, (923), 262 states have call predecessors, (923), 279 states have return successors, (947), 908 states have call predecessors, (947), 916 states have call successors, (947) [2022-03-18 05:57:55,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 5153 transitions. [2022-03-18 05:57:55,771 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 5153 transitions. Word has length 107 [2022-03-18 05:57:55,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:57:55,771 INFO L478 AbstractCegarLoop]: Abstraction has 3676 states and 5153 transitions. [2022-03-18 05:57:55,771 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 12 states have internal predecessors, (81), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:57:55,771 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 5153 transitions. [2022-03-18 05:57:55,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-03-18 05:57:55,774 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:57:55,774 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:57:55,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-03-18 05:57:55,976 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 [2022-03-18 05:57:55,976 INFO L403 AbstractCegarLoop]: === Iteration 77 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:57:55,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:57:55,976 INFO L85 PathProgramCache]: Analyzing trace with hash 786695782, now seen corresponding path program 1 times [2022-03-18 05:57:55,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:57:55,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1854068188] [2022-03-18 05:57:55,978 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:57:55,978 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:57:55,979 INFO L85 PathProgramCache]: Analyzing trace with hash 786695782, now seen corresponding path program 2 times [2022-03-18 05:57:55,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:57:55,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751479470] [2022-03-18 05:57:55,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:57:55,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:57:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:56,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:57:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:56,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:57:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:56,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:57:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:56,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:57:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:56,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:57:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:56,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:57:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:56,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:57:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:56,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 05:57:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:56,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:57:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:56,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:57:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:56,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:57:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:56,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:57:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:57:56,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:57:56,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:57:56,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751479470] [2022-03-18 05:57:56,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751479470] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:57:56,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421332373] [2022-03-18 05:57:56,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:57:56,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:57:56,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:57:56,463 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) [2022-03-18 05:57:56,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-03-18 05:57:58,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:57:58,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:57:58,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 1998 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-18 05:57:58,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:57:59,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:57:59,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:57:59,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421332373] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:57:59,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:57:59,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-18 05:57:59,137 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:57:59,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1854068188] [2022-03-18 05:57:59,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1854068188] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:57:59,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:57:59,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:57:59,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631267617] [2022-03-18 05:57:59,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:57:59,137 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:57:59,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:57:59,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:57:59,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-18 05:57:59,138 INFO L87 Difference]: Start difference. First operand 3676 states and 5153 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:58:07,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:58:07,414 INFO L93 Difference]: Finished difference Result 6265 states and 8892 transitions. [2022-03-18 05:58:07,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 05:58:07,415 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 104 [2022-03-18 05:58:07,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:58:07,439 INFO L225 Difference]: With dead ends: 6265 [2022-03-18 05:58:07,439 INFO L226 Difference]: Without dead ends: 6244 [2022-03-18 05:58:07,443 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-18 05:58:07,443 INFO L912 BasicCegarLoop]: 4150 mSDtfsCounter, 1891 mSDsluCounter, 40753 mSDsCounter, 0 mSdLazyCounter, 9093 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 44903 SdHoareTripleChecker+Invalid, 9109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 9093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-03-18 05:58:07,443 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1892 Valid, 44903 Invalid, 9109 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 9093 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-03-18 05:58:07,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6244 states. [2022-03-18 05:58:09,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6244 to 3676. [2022-03-18 05:58:09,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 2473 states have (on average 1.3275374039627983) internal successors, (3283), 2547 states have internal predecessors, (3283), 923 states have call successors, (923), 262 states have call predecessors, (923), 279 states have return successors, (946), 908 states have call predecessors, (946), 916 states have call successors, (946) [2022-03-18 05:58:09,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 5152 transitions. [2022-03-18 05:58:09,347 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 5152 transitions. Word has length 104 [2022-03-18 05:58:09,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:58:09,347 INFO L478 AbstractCegarLoop]: Abstraction has 3676 states and 5152 transitions. [2022-03-18 05:58:09,347 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:58:09,347 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 5152 transitions. [2022-03-18 05:58:09,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-03-18 05:58:09,349 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:58:09,349 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:58:09,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-03-18 05:58:09,549 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 [2022-03-18 05:58:09,550 INFO L403 AbstractCegarLoop]: === Iteration 78 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:58:09,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:58:09,550 INFO L85 PathProgramCache]: Analyzing trace with hash 863893830, now seen corresponding path program 1 times [2022-03-18 05:58:09,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:58:09,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [484213397] [2022-03-18 05:58:09,552 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:58:09,552 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:58:09,552 INFO L85 PathProgramCache]: Analyzing trace with hash 863893830, now seen corresponding path program 2 times [2022-03-18 05:58:09,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:58:09,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068855786] [2022-03-18 05:58:09,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:58:09,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:58:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:09,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:58:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:09,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:58:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:09,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:58:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:09,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:58:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:09,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:58:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:09,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:58:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:09,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:58:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:09,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:58:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:09,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:58:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:10,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:58:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:10,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:58:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:10,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:58:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:10,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:58:10,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:58:10,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068855786] [2022-03-18 05:58:10,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068855786] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:58:10,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56694462] [2022-03-18 05:58:10,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:58:10,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:58:10,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:58:10,026 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) [2022-03-18 05:58:10,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-03-18 05:58:12,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:58:12,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:58:12,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-18 05:58:12,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:58:12,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:58:12,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:58:12,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56694462] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:58:12,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:58:12,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-18 05:58:12,648 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:58:12,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [484213397] [2022-03-18 05:58:12,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [484213397] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:58:12,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:58:12,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:58:12,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027577355] [2022-03-18 05:58:12,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:58:12,649 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:58:12,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:58:12,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:58:12,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-18 05:58:12,649 INFO L87 Difference]: Start difference. First operand 3676 states and 5152 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:58:21,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:58:21,152 INFO L93 Difference]: Finished difference Result 6261 states and 8887 transitions. [2022-03-18 05:58:21,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 05:58:21,152 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 104 [2022-03-18 05:58:21,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:58:21,172 INFO L225 Difference]: With dead ends: 6261 [2022-03-18 05:58:21,173 INFO L226 Difference]: Without dead ends: 6240 [2022-03-18 05:58:21,176 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-18 05:58:21,177 INFO L912 BasicCegarLoop]: 4338 mSDtfsCounter, 1885 mSDsluCounter, 47485 mSDsCounter, 0 mSdLazyCounter, 9096 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 51823 SdHoareTripleChecker+Invalid, 9111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 9096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-03-18 05:58:21,177 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1886 Valid, 51823 Invalid, 9111 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 9096 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-03-18 05:58:21,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2022-03-18 05:58:23,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 3676. [2022-03-18 05:58:23,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 2473 states have (on average 1.3275374039627983) internal successors, (3283), 2547 states have internal predecessors, (3283), 923 states have call successors, (923), 262 states have call predecessors, (923), 279 states have return successors, (945), 908 states have call predecessors, (945), 916 states have call successors, (945) [2022-03-18 05:58:23,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 5151 transitions. [2022-03-18 05:58:23,137 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 5151 transitions. Word has length 104 [2022-03-18 05:58:23,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:58:23,138 INFO L478 AbstractCegarLoop]: Abstraction has 3676 states and 5151 transitions. [2022-03-18 05:58:23,138 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:58:23,138 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 5151 transitions. [2022-03-18 05:58:23,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-18 05:58:23,139 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:58:23,140 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:58:23,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-03-18 05:58:23,342 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 [2022-03-18 05:58:23,342 INFO L403 AbstractCegarLoop]: === Iteration 79 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:58:23,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:58:23,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1911858775, now seen corresponding path program 1 times [2022-03-18 05:58:23,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:58:23,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2094605544] [2022-03-18 05:58:23,344 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:58:23,344 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:58:23,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1911858775, now seen corresponding path program 2 times [2022-03-18 05:58:23,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:58:23,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868628337] [2022-03-18 05:58:23,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:58:23,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:58:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:23,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:58:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:23,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:58:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:23,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:58:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:23,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:58:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:23,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:58:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:23,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:58:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:23,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:58:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:23,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:58:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:23,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:58:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:23,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:58:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:23,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:58:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:23,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:58:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:23,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:58:23,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:58:23,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868628337] [2022-03-18 05:58:23,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868628337] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:58:23,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376555840] [2022-03-18 05:58:23,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:58:23,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:58:23,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:58:23,848 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) [2022-03-18 05:58:23,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-03-18 05:58:26,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:58:26,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:58:26,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 1979 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-18 05:58:26,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:58:26,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:58:26,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:58:26,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376555840] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:58:26,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:58:26,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-18 05:58:26,490 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:58:26,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2094605544] [2022-03-18 05:58:26,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2094605544] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:58:26,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:58:26,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:58:26,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973346295] [2022-03-18 05:58:26,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:58:26,490 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:58:26,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:58:26,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:58:26,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-18 05:58:26,491 INFO L87 Difference]: Start difference. First operand 3676 states and 5151 transitions. Second operand has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:58:34,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:58:34,767 INFO L93 Difference]: Finished difference Result 6257 states and 8882 transitions. [2022-03-18 05:58:34,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 05:58:34,768 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2022-03-18 05:58:34,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:58:34,787 INFO L225 Difference]: With dead ends: 6257 [2022-03-18 05:58:34,787 INFO L226 Difference]: Without dead ends: 6236 [2022-03-18 05:58:34,790 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-18 05:58:34,790 INFO L912 BasicCegarLoop]: 4255 mSDtfsCounter, 1887 mSDsluCounter, 45341 mSDsCounter, 0 mSdLazyCounter, 8332 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 49596 SdHoareTripleChecker+Invalid, 8348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 8332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:58:34,790 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1888 Valid, 49596 Invalid, 8348 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 8332 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-03-18 05:58:34,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6236 states. [2022-03-18 05:58:36,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6236 to 3676. [2022-03-18 05:58:36,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 2473 states have (on average 1.3275374039627983) internal successors, (3283), 2547 states have internal predecessors, (3283), 923 states have call successors, (923), 262 states have call predecessors, (923), 279 states have return successors, (944), 908 states have call predecessors, (944), 916 states have call successors, (944) [2022-03-18 05:58:36,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 5150 transitions. [2022-03-18 05:58:36,726 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 5150 transitions. Word has length 103 [2022-03-18 05:58:36,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:58:36,726 INFO L478 AbstractCegarLoop]: Abstraction has 3676 states and 5150 transitions. [2022-03-18 05:58:36,727 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:58:36,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 5150 transitions. [2022-03-18 05:58:36,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-18 05:58:36,728 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:58:36,728 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:58:36,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-03-18 05:58:36,929 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 [2022-03-18 05:58:36,929 INFO L403 AbstractCegarLoop]: === Iteration 80 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:58:36,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:58:36,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1429858466, now seen corresponding path program 1 times [2022-03-18 05:58:36,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:58:36,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1969910959] [2022-03-18 05:58:36,937 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:58:36,937 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:58:36,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1429858466, now seen corresponding path program 2 times [2022-03-18 05:58:36,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:58:36,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080233226] [2022-03-18 05:58:36,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:58:36,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:58:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:37,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:58:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:37,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:58:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:37,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:58:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:37,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:58:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:37,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:58:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:37,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:58:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:37,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:58:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:37,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 05:58:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:37,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:58:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:37,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:58:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:37,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:58:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:37,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:58:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:37,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:58:37,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:58:37,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080233226] [2022-03-18 05:58:37,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080233226] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:58:37,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015725028] [2022-03-18 05:58:37,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:58:37,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:58:37,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:58:37,392 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) [2022-03-18 05:58:37,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-03-18 05:58:39,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:58:39,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:58:39,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 1959 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-18 05:58:39,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:58:40,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:58:40,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:58:40,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015725028] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:58:40,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:58:40,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [10] total 24 [2022-03-18 05:58:40,150 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:58:40,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1969910959] [2022-03-18 05:58:40,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1969910959] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:58:40,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:58:40,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:58:40,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765669264] [2022-03-18 05:58:40,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:58:40,150 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:58:40,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:58:40,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:58:40,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2022-03-18 05:58:40,151 INFO L87 Difference]: Start difference. First operand 3676 states and 5150 transitions. Second operand has 16 states, 16 states have (on average 4.4375) internal successors, (71), 12 states have internal predecessors, (71), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:58:48,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:58:48,351 INFO L93 Difference]: Finished difference Result 6253 states and 8877 transitions. [2022-03-18 05:58:48,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 05:58:48,351 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 12 states have internal predecessors, (71), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 97 [2022-03-18 05:58:48,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:58:48,364 INFO L225 Difference]: With dead ends: 6253 [2022-03-18 05:58:48,365 INFO L226 Difference]: Without dead ends: 6235 [2022-03-18 05:58:48,366 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-18 05:58:48,366 INFO L912 BasicCegarLoop]: 4304 mSDtfsCounter, 1881 mSDsluCounter, 20762 mSDsCounter, 0 mSdLazyCounter, 8880 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1882 SdHoareTripleChecker+Valid, 25066 SdHoareTripleChecker+Invalid, 8896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 8880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-03-18 05:58:48,366 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1882 Valid, 25066 Invalid, 8896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 8880 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-03-18 05:58:48,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6235 states. [2022-03-18 05:58:50,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6235 to 3679. [2022-03-18 05:58:50,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3679 states, 2475 states have (on average 1.3272727272727274) internal successors, (3285), 2549 states have internal predecessors, (3285), 923 states have call successors, (923), 262 states have call predecessors, (923), 280 states have return successors, (945), 909 states have call predecessors, (945), 916 states have call successors, (945) [2022-03-18 05:58:50,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3679 states to 3679 states and 5153 transitions. [2022-03-18 05:58:50,298 INFO L78 Accepts]: Start accepts. Automaton has 3679 states and 5153 transitions. Word has length 97 [2022-03-18 05:58:50,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:58:50,299 INFO L478 AbstractCegarLoop]: Abstraction has 3679 states and 5153 transitions. [2022-03-18 05:58:50,299 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 12 states have internal predecessors, (71), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:58:50,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3679 states and 5153 transitions. [2022-03-18 05:58:50,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-03-18 05:58:50,300 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:58:50,300 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:58:50,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-03-18 05:58:50,501 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 [2022-03-18 05:58:50,501 INFO L403 AbstractCegarLoop]: === Iteration 81 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:58:50,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:58:50,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1331744699, now seen corresponding path program 1 times [2022-03-18 05:58:50,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:58:50,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1498713027] [2022-03-18 05:58:50,504 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:58:50,504 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:58:50,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1331744699, now seen corresponding path program 2 times [2022-03-18 05:58:50,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:58:50,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601199958] [2022-03-18 05:58:50,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:58:50,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:58:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:50,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:58:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:50,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:58:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:50,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:58:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:50,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:58:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:50,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:58:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:50,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:58:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:50,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:58:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:50,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 05:58:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:50,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:58:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:50,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 05:58:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:50,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:58:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:50,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:58:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:50,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:58:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:58:50,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:58:50,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:58:50,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601199958] [2022-03-18 05:58:50,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601199958] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:58:50,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416370961] [2022-03-18 05:58:50,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:58:50,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:58:50,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:58:50,987 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) [2022-03-18 05:58:50,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-03-18 05:58:53,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:58:53,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:58:53,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 2024 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-18 05:58:53,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:58:53,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:58:53,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:58:53,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416370961] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:58:53,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:58:53,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-18 05:58:53,680 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:58:53,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1498713027] [2022-03-18 05:58:53,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1498713027] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:58:53,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:58:53,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:58:53,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526556211] [2022-03-18 05:58:53,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:58:53,680 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:58:53,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:58:53,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:58:53,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-18 05:58:53,681 INFO L87 Difference]: Start difference. First operand 3679 states and 5153 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 12 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13) [2022-03-18 05:59:01,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:59:01,858 INFO L93 Difference]: Finished difference Result 6252 states and 8875 transitions. [2022-03-18 05:59:01,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 05:59:01,859 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 12 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2022-03-18 05:59:01,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:59:01,875 INFO L225 Difference]: With dead ends: 6252 [2022-03-18 05:59:01,876 INFO L226 Difference]: Without dead ends: 6231 [2022-03-18 05:59:01,878 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-18 05:59:01,879 INFO L912 BasicCegarLoop]: 4295 mSDtfsCounter, 1881 mSDsluCounter, 29140 mSDsCounter, 0 mSdLazyCounter, 8192 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1882 SdHoareTripleChecker+Valid, 33435 SdHoareTripleChecker+Invalid, 8205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 8192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-03-18 05:59:01,879 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1882 Valid, 33435 Invalid, 8205 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 8192 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-03-18 05:59:01,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6231 states. [2022-03-18 05:59:03,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6231 to 3679. [2022-03-18 05:59:03,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3679 states, 2475 states have (on average 1.3272727272727274) internal successors, (3285), 2549 states have internal predecessors, (3285), 923 states have call successors, (923), 262 states have call predecessors, (923), 280 states have return successors, (944), 909 states have call predecessors, (944), 916 states have call successors, (944) [2022-03-18 05:59:03,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3679 states to 3679 states and 5152 transitions. [2022-03-18 05:59:03,879 INFO L78 Accepts]: Start accepts. Automaton has 3679 states and 5152 transitions. Word has length 113 [2022-03-18 05:59:03,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:59:03,879 INFO L478 AbstractCegarLoop]: Abstraction has 3679 states and 5152 transitions. [2022-03-18 05:59:03,879 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 12 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13) [2022-03-18 05:59:03,879 INFO L276 IsEmpty]: Start isEmpty. Operand 3679 states and 5152 transitions. [2022-03-18 05:59:03,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-18 05:59:03,881 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:59:03,881 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:59:03,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-03-18 05:59:04,081 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 [2022-03-18 05:59:04,082 INFO L403 AbstractCegarLoop]: === Iteration 82 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:59:04,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:59:04,082 INFO L85 PathProgramCache]: Analyzing trace with hash 492684880, now seen corresponding path program 1 times [2022-03-18 05:59:04,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:59:04,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1055001977] [2022-03-18 05:59:04,084 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:59:04,084 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:59:04,084 INFO L85 PathProgramCache]: Analyzing trace with hash 492684880, now seen corresponding path program 2 times [2022-03-18 05:59:04,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:59:04,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19582980] [2022-03-18 05:59:04,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:59:04,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:59:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:04,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:59:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:04,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:59:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:04,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:59:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:04,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:59:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:04,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:59:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:04,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:59:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:04,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:59:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:04,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 05:59:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:04,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:59:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:04,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:59:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:04,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:59:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:04,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:59:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:04,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:59:04,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:59:04,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19582980] [2022-03-18 05:59:04,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19582980] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:59:04,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318837415] [2022-03-18 05:59:04,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:59:04,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:59:04,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:59:04,590 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) [2022-03-18 05:59:04,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-03-18 05:59:06,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:59:06,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:59:06,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 1957 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-18 05:59:06,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:59:07,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:59:07,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:59:07,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318837415] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:59:07,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:59:07,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [10] total 24 [2022-03-18 05:59:07,198 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:59:07,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1055001977] [2022-03-18 05:59:07,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1055001977] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:59:07,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:59:07,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:59:07,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371376535] [2022-03-18 05:59:07,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:59:07,199 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:59:07,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:59:07,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:59:07,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2022-03-18 05:59:07,199 INFO L87 Difference]: Start difference. First operand 3679 states and 5152 transitions. Second operand has 16 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:59:15,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:59:15,916 INFO L93 Difference]: Finished difference Result 6248 states and 8870 transitions. [2022-03-18 05:59:15,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 05:59:15,916 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 96 [2022-03-18 05:59:15,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:59:15,932 INFO L225 Difference]: With dead ends: 6248 [2022-03-18 05:59:15,933 INFO L226 Difference]: Without dead ends: 6227 [2022-03-18 05:59:15,935 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-18 05:59:15,936 INFO L912 BasicCegarLoop]: 4333 mSDtfsCounter, 1879 mSDsluCounter, 49978 mSDsCounter, 0 mSdLazyCounter, 8999 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1880 SdHoareTripleChecker+Valid, 54311 SdHoareTripleChecker+Invalid, 9014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 8999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-03-18 05:59:15,936 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1880 Valid, 54311 Invalid, 9014 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 8999 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-03-18 05:59:15,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6227 states. [2022-03-18 05:59:18,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6227 to 3676. [2022-03-18 05:59:18,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 2473 states have (on average 1.3275374039627983) internal successors, (3283), 2547 states have internal predecessors, (3283), 923 states have call successors, (923), 262 states have call predecessors, (923), 279 states have return successors, (942), 908 states have call predecessors, (942), 916 states have call successors, (942) [2022-03-18 05:59:18,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 5148 transitions. [2022-03-18 05:59:18,027 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 5148 transitions. Word has length 96 [2022-03-18 05:59:18,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:59:18,027 INFO L478 AbstractCegarLoop]: Abstraction has 3676 states and 5148 transitions. [2022-03-18 05:59:18,028 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:59:18,028 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 5148 transitions. [2022-03-18 05:59:18,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-03-18 05:59:18,029 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:59:18,029 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:59:18,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-03-18 05:59:18,230 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 [2022-03-18 05:59:18,230 INFO L403 AbstractCegarLoop]: === Iteration 83 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:59:18,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:59:18,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1387654662, now seen corresponding path program 1 times [2022-03-18 05:59:18,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:59:18,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [104657485] [2022-03-18 05:59:18,232 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:59:18,232 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:59:18,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1387654662, now seen corresponding path program 2 times [2022-03-18 05:59:18,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:59:18,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467692087] [2022-03-18 05:59:18,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:59:18,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:59:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:18,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:59:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:18,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:59:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:18,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:59:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:18,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:59:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:18,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:59:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:18,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:59:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:18,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:59:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:18,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 05:59:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:18,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:59:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:18,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:59:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:18,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:59:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:18,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:59:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:18,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:59:18,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:59:18,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467692087] [2022-03-18 05:59:18,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467692087] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:59:18,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820596406] [2022-03-18 05:59:18,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:59:18,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:59:18,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:59:18,718 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) [2022-03-18 05:59:18,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-03-18 05:59:20,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:59:20,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:59:20,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 1999 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-18 05:59:20,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:59:21,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:59:21,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:59:21,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820596406] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:59:21,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:59:21,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-18 05:59:21,352 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:59:21,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [104657485] [2022-03-18 05:59:21,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [104657485] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:59:21,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:59:21,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:59:21,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704924665] [2022-03-18 05:59:21,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:59:21,353 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:59:21,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:59:21,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:59:21,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-18 05:59:21,354 INFO L87 Difference]: Start difference. First operand 3676 states and 5148 transitions. Second operand has 16 states, 16 states have (on average 5.0625) internal successors, (81), 12 states have internal predecessors, (81), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:59:30,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:59:30,049 INFO L93 Difference]: Finished difference Result 6275 states and 8896 transitions. [2022-03-18 05:59:30,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 05:59:30,050 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 12 states have internal predecessors, (81), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 107 [2022-03-18 05:59:30,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:59:30,065 INFO L225 Difference]: With dead ends: 6275 [2022-03-18 05:59:30,065 INFO L226 Difference]: Without dead ends: 6249 [2022-03-18 05:59:30,067 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-18 05:59:30,067 INFO L912 BasicCegarLoop]: 4295 mSDtfsCounter, 1912 mSDsluCounter, 23338 mSDsCounter, 0 mSdLazyCounter, 9091 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1913 SdHoareTripleChecker+Valid, 27633 SdHoareTripleChecker+Invalid, 9114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 9091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-03-18 05:59:30,067 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1913 Valid, 27633 Invalid, 9114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 9091 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-03-18 05:59:30,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6249 states. [2022-03-18 05:59:32,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6249 to 3687. [2022-03-18 05:59:32,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3687 states, 2483 states have (on average 1.3266210229561015) internal successors, (3294), 2559 states have internal predecessors, (3294), 922 states have call successors, (922), 262 states have call predecessors, (922), 281 states have return successors, (943), 907 states have call predecessors, (943), 915 states have call successors, (943) [2022-03-18 05:59:32,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5159 transitions. [2022-03-18 05:59:32,208 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5159 transitions. Word has length 107 [2022-03-18 05:59:32,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:59:32,208 INFO L478 AbstractCegarLoop]: Abstraction has 3687 states and 5159 transitions. [2022-03-18 05:59:32,208 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 12 states have internal predecessors, (81), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:59:32,208 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5159 transitions. [2022-03-18 05:59:32,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-03-18 05:59:32,210 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:59:32,210 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:59:32,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-03-18 05:59:32,411 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 [2022-03-18 05:59:32,411 INFO L403 AbstractCegarLoop]: === Iteration 84 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:59:32,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:59:32,411 INFO L85 PathProgramCache]: Analyzing trace with hash -2010832634, now seen corresponding path program 1 times [2022-03-18 05:59:32,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:59:32,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1247728259] [2022-03-18 05:59:32,414 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:59:32,414 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:59:32,414 INFO L85 PathProgramCache]: Analyzing trace with hash -2010832634, now seen corresponding path program 2 times [2022-03-18 05:59:32,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:59:32,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807564658] [2022-03-18 05:59:32,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:59:32,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:59:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:32,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:59:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:32,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:59:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:32,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:59:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:32,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:59:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:32,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:59:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:32,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:59:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:32,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:59:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:32,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 05:59:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:32,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:59:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:32,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:59:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:32,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:59:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:32,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:59:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:32,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:59:32,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:59:32,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807564658] [2022-03-18 05:59:32,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807564658] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:59:32,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841522683] [2022-03-18 05:59:32,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:59:32,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:59:32,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:59:32,920 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) [2022-03-18 05:59:32,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-03-18 05:59:35,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:59:35,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:59:35,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 1996 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-18 05:59:35,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:59:35,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:59:35,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:59:35,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841522683] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:59:35,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:59:35,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-18 05:59:35,648 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:59:35,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1247728259] [2022-03-18 05:59:35,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1247728259] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:59:35,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:59:35,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:59:35,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990912030] [2022-03-18 05:59:35,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:59:35,648 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:59:35,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:59:35,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:59:35,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-18 05:59:35,649 INFO L87 Difference]: Start difference. First operand 3687 states and 5159 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:59:44,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:59:44,566 INFO L93 Difference]: Finished difference Result 6266 states and 8884 transitions. [2022-03-18 05:59:44,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 05:59:44,567 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 104 [2022-03-18 05:59:44,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:59:44,583 INFO L225 Difference]: With dead ends: 6266 [2022-03-18 05:59:44,583 INFO L226 Difference]: Without dead ends: 6240 [2022-03-18 05:59:44,586 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-18 05:59:44,586 INFO L912 BasicCegarLoop]: 4352 mSDtfsCounter, 1908 mSDsluCounter, 37897 mSDsCounter, 0 mSdLazyCounter, 9134 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1909 SdHoareTripleChecker+Valid, 42249 SdHoareTripleChecker+Invalid, 9154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 9134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-03-18 05:59:44,586 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1909 Valid, 42249 Invalid, 9154 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 9134 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-03-18 05:59:44,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2022-03-18 05:59:46,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 3678. [2022-03-18 05:59:46,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3678 states, 2477 states have (on average 1.3266047638272103) internal successors, (3286), 2553 states have internal predecessors, (3286), 920 states have call successors, (920), 261 states have call predecessors, (920), 280 states have return successors, (941), 905 states have call predecessors, (941), 913 states have call successors, (941) [2022-03-18 05:59:46,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3678 states to 3678 states and 5147 transitions. [2022-03-18 05:59:46,789 INFO L78 Accepts]: Start accepts. Automaton has 3678 states and 5147 transitions. Word has length 104 [2022-03-18 05:59:46,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 05:59:46,789 INFO L478 AbstractCegarLoop]: Abstraction has 3678 states and 5147 transitions. [2022-03-18 05:59:46,789 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 12 states have internal predecessors, (78), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:59:46,790 INFO L276 IsEmpty]: Start isEmpty. Operand 3678 states and 5147 transitions. [2022-03-18 05:59:46,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-18 05:59:46,791 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 05:59:46,791 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 05:59:46,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-03-18 05:59:46,992 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 [2022-03-18 05:59:46,992 INFO L403 AbstractCegarLoop]: === Iteration 85 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 05:59:46,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 05:59:46,992 INFO L85 PathProgramCache]: Analyzing trace with hash -962867689, now seen corresponding path program 1 times [2022-03-18 05:59:46,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 05:59:46,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [42298676] [2022-03-18 05:59:46,994 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 05:59:46,994 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 05:59:46,995 INFO L85 PathProgramCache]: Analyzing trace with hash -962867689, now seen corresponding path program 2 times [2022-03-18 05:59:46,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 05:59:46,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734258271] [2022-03-18 05:59:46,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 05:59:46,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 05:59:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:47,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 05:59:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:47,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 05:59:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:47,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:59:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:47,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:59:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:47,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:59:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:47,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 05:59:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:47,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:59:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:47,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 05:59:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:47,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 05:59:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:47,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 05:59:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:47,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 05:59:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:47,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 05:59:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 05:59:47,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 05:59:47,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 05:59:47,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734258271] [2022-03-18 05:59:47,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734258271] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 05:59:47,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603405834] [2022-03-18 05:59:47,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 05:59:47,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 05:59:47,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 05:59:47,560 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) [2022-03-18 05:59:47,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-03-18 05:59:49,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 05:59:49,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 05:59:49,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 1978 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-18 05:59:49,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 05:59:50,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 05:59:50,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 05:59:50,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603405834] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:59:50,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 05:59:50,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2022-03-18 05:59:50,353 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 05:59:50,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [42298676] [2022-03-18 05:59:50,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [42298676] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 05:59:50,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 05:59:50,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 05:59:50,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713486112] [2022-03-18 05:59:50,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 05:59:50,353 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 05:59:50,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 05:59:50,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 05:59:50,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-03-18 05:59:50,354 INFO L87 Difference]: Start difference. First operand 3678 states and 5147 transitions. Second operand has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 05:59:59,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 05:59:59,402 INFO L93 Difference]: Finished difference Result 6257 states and 8872 transitions. [2022-03-18 05:59:59,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 05:59:59,402 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2022-03-18 05:59:59,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 05:59:59,419 INFO L225 Difference]: With dead ends: 6257 [2022-03-18 05:59:59,419 INFO L226 Difference]: Without dead ends: 6193 [2022-03-18 05:59:59,422 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-03-18 05:59:59,422 INFO L912 BasicCegarLoop]: 4012 mSDtfsCounter, 1904 mSDsluCounter, 42302 mSDsCounter, 0 mSdLazyCounter, 8410 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1905 SdHoareTripleChecker+Valid, 46314 SdHoareTripleChecker+Invalid, 8429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 8410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-03-18 05:59:59,423 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1905 Valid, 46314 Invalid, 8429 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 8410 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-03-18 05:59:59,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6193 states. [2022-03-18 06:00:01,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6193 to 3631. [2022-03-18 06:00:01,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3631 states, 2439 states have (on average 1.3243132431324314) internal successors, (3230), 2515 states have internal predecessors, (3230), 915 states have call successors, (915), 257 states have call predecessors, (915), 276 states have return successors, (936), 900 states have call predecessors, (936), 908 states have call successors, (936) [2022-03-18 06:00:01,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 5081 transitions. [2022-03-18 06:00:01,689 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 5081 transitions. Word has length 103 [2022-03-18 06:00:01,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 06:00:01,689 INFO L478 AbstractCegarLoop]: Abstraction has 3631 states and 5081 transitions. [2022-03-18 06:00:01,690 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 06:00:01,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 5081 transitions. [2022-03-18 06:00:01,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-18 06:00:01,692 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 06:00:01,692 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 06:00:01,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-03-18 06:00:01,892 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 [2022-03-18 06:00:01,892 INFO L403 AbstractCegarLoop]: === Iteration 86 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 06:00:01,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 06:00:01,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1912925712, now seen corresponding path program 1 times [2022-03-18 06:00:01,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 06:00:01,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [244450877] [2022-03-18 06:00:01,895 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 06:00:01,895 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 06:00:01,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1912925712, now seen corresponding path program 2 times [2022-03-18 06:00:01,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 06:00:01,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051864645] [2022-03-18 06:00:01,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 06:00:01,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 06:00:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:02,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 06:00:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:02,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 06:00:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:02,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 06:00:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:02,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 06:00:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:02,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 06:00:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:02,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 06:00:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:02,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 06:00:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:02,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 06:00:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:02,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 06:00:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:02,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 06:00:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:02,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 06:00:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:02,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 06:00:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:02,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 06:00:02,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 06:00:02,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051864645] [2022-03-18 06:00:02,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051864645] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 06:00:02,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497127968] [2022-03-18 06:00:02,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 06:00:02,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 06:00:02,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 06:00:02,366 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) [2022-03-18 06:00:02,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-03-18 06:00:04,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 06:00:04,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 06:00:04,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 1956 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-18 06:00:04,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 06:00:05,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-18 06:00:05,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 06:00:05,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497127968] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 06:00:05,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 06:00:05,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [10] total 24 [2022-03-18 06:00:05,123 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 06:00:05,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [244450877] [2022-03-18 06:00:05,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [244450877] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 06:00:05,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 06:00:05,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-18 06:00:05,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548770464] [2022-03-18 06:00:05,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 06:00:05,124 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 06:00:05,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 06:00:05,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 06:00:05,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2022-03-18 06:00:05,125 INFO L87 Difference]: Start difference. First operand 3631 states and 5081 transitions. Second operand has 16 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 06:00:14,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 06:00:14,310 INFO L93 Difference]: Finished difference Result 6210 states and 8806 transitions. [2022-03-18 06:00:14,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 06:00:14,310 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 96 [2022-03-18 06:00:14,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 06:00:14,326 INFO L225 Difference]: With dead ends: 6210 [2022-03-18 06:00:14,326 INFO L226 Difference]: Without dead ends: 6185 [2022-03-18 06:00:14,328 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-03-18 06:00:14,329 INFO L912 BasicCegarLoop]: 3951 mSDtfsCounter, 1901 mSDsluCounter, 39521 mSDsCounter, 0 mSdLazyCounter, 8368 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1902 SdHoareTripleChecker+Valid, 43472 SdHoareTripleChecker+Invalid, 8391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 8368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-03-18 06:00:14,329 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1902 Valid, 43472 Invalid, 8391 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 8368 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-03-18 06:00:14,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6185 states. [2022-03-18 06:00:16,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6185 to 3623. [2022-03-18 06:00:16,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3623 states, 2434 states have (on average 1.324568611339359) internal successors, (3224), 2510 states have internal predecessors, (3224), 913 states have call successors, (913), 257 states have call predecessors, (913), 275 states have return successors, (933), 897 states have call predecessors, (933), 906 states have call successors, (933) [2022-03-18 06:00:16,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 5070 transitions. [2022-03-18 06:00:16,570 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 5070 transitions. Word has length 96 [2022-03-18 06:00:16,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 06:00:16,570 INFO L478 AbstractCegarLoop]: Abstraction has 3623 states and 5070 transitions. [2022-03-18 06:00:16,571 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-18 06:00:16,571 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 5070 transitions. [2022-03-18 06:00:16,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-03-18 06:00:16,573 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 06:00:16,573 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 06:00:16,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-03-18 06:00:16,773 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 [2022-03-18 06:00:16,773 INFO L403 AbstractCegarLoop]: === Iteration 87 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 06:00:16,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 06:00:16,774 INFO L85 PathProgramCache]: Analyzing trace with hash 824363753, now seen corresponding path program 1 times [2022-03-18 06:00:16,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 06:00:16,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1667816568] [2022-03-18 06:00:16,776 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 06:00:16,776 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 06:00:16,776 INFO L85 PathProgramCache]: Analyzing trace with hash 824363753, now seen corresponding path program 2 times [2022-03-18 06:00:16,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 06:00:16,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011823776] [2022-03-18 06:00:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 06:00:16,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 06:00:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:17,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 06:00:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:17,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 06:00:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:17,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 06:00:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:17,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 06:00:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:17,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 06:00:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:17,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 06:00:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:17,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 06:00:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:17,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 06:00:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:17,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 06:00:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:17,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 06:00:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:17,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 06:00:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:17,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 06:00:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:17,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 06:00:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 06:00:17,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 06:00:17,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 06:00:17,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011823776] [2022-03-18 06:00:17,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011823776] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 06:00:17,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124593396] [2022-03-18 06:00:17,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 06:00:17,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 06:00:17,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 06:00:17,341 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) [2022-03-18 06:00:17,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process